Patent application number | Description | Published |
20090238318 | MECHANISM FOR CONSTRUCTING AN OVERSAMPLED WAVEFORM FOR A SET OF SIGNALS RECEIVED BY A RECEIVER - A mechanism is provided for constructing an oversampled waveform for a set of incoming signals received by a receiver. In one implementation, the oversampled waveform is constructed by way of cooperation between the receiver and a waveform construction mechanism (WCM). The receiver receives the incoming signals, samples a subset of the incoming signals at a time, stores the subsets of sample values into a set of registers, and subsequently provides the subsets of sample values to the WCM. The WCM in turn sorts through the subsets of sample values, organizes them into proper orders, and “stitches” them together to construct the oversampled waveform for the set of incoming signals. With proper cooperation between the receiver and the WCM, and with proper processing logic on the WCM, it is possible to construct the oversampled waveform for the incoming signals without requiring large amounts of resources on the receiver. | 09-24-2009 |
20090316727 | Real-Time Optimization of TX FIR Filter for High-Speed Data Communication - A feedback module is defined to receive as input a set of data sample signals and a set of reference sample signals. Each of the data and reference sample signals is generated by sampling a differential signal having been transmitted through a FIR filter. The feedback module is defined to operate a respective post cursor counter for each post cursor of the FIR filter and update the post cursor counters based on the received sets of data and reference sample signals. Also, the feedback module is defined to generate a tap weight adjustment signal for a given tap weight of the FIR filter when a magnitude of a post cursor counter corresponding to the given tap weight is greater than or equal to a threshold value. An adaptation module is defined to adapt a reference voltage used to generate the reference sample signals to a condition of the differential signal. | 12-24-2009 |
20100158182 | Method and System for Reducing Duty Cycle Distortion Amplification in Forwarded Clocks - A method and apparatus for reducing the amplification of the duty cycle distortion of high frequency clock signals when is provided. A data signal is sent to a receiver via a first channel. A clock signal is sent to the receiver via a second channel. The clock signal is filtered to substantially remove therefrom low frequency components before the clock signal is used by the receiver to recover data from the data signal. | 06-24-2010 |
20100208855 | SYSTEM AND METHOD OF ADAPTING PRECURSOR TAP COEFFICIENT - A system and methods for recovering data from an input data signal are disclosed. The system includes a transmitter for conveying a data signal filtered by a finite impulse response (FIR) filter to a receiver via a channel. The receiver uses an adaptive algorithm to determine update signals for a pre-cursor tap coefficient of the FIR based on samples taken from the received data signal and conveys the update signals to the FIR. To generate update signals, the receiver samples the data signal at a phase estimated to correspond to a peak amplitude of a pulse response of the channel. The phase is based on a clock recovered from the data signal. The update signals increase or decrease a pre-cursor tap coefficient setting in response to determining that the phase corresponds to a point earlier or later, respectively, than the peak amplitude of the channel's pulse response. | 08-19-2010 |
20110103458 | ASYMMETRIC DECISION FEEDBACK EQUALIZATION SLICING IN HIGH SPEED TRANSCEIVERS - An asymmetric DFE receiver circuit. The receiver circuit includes a voltage measuring unit configured to determine a signal voltage of a received signal, and a comparator unit configured to calculate a difference between the signal voltage and an evaluation threshold voltage and to compare the difference to the value of a midpoint voltage. The comparator unit is configured to generate a first control signal if the difference is greater than the midpoint voltage value or a second control signal if the signal voltage is less than the midpoint voltage value. The receiver includes an adjustment circuit configured to adjust the evaluation threshold voltage toward the signal voltage if the first control signal is generated and away from the signal voltage if the second control signal is generated. The rates of adjustment may vary depending upon whether the received signal is a transition bit or a non-transition bit. | 05-05-2011 |
20110150060 | Voltage Margin Monitoring for an ADC-Based Serializer/Deserializer in Mission Mode - Various embodiments herein include one or more of systems, methods, software, and/or data structures to determine voltage margin for a high-speed serial data link. Advantageously, the margin determination may be made during normal operation of the data link (“mission mode”) such that the performance of the data link is not affected by the voltage margin measurements. That is, the margin measurements may be performed “on line” rather than “off line.” To facilitate the voltage margin measurement, a plurality of digital samples from an analog to digital converter (ADC) may be evaluated to determine the most probable bit values (i.e., digital 1's and 0's) that are represented by the digital samples. Then, a method may be used to remove or compensate for ISI effects from one or more of the digital samples, thereby providing an accurate representation of the voltage margin present in a data link. Subsequently, the voltage margin may be periodically monitored over time to detect degradation of the data link. | 06-23-2011 |
20110167297 | CLOCK-DATA-RECOVERY TECHNIQUE FOR HIGH-SPEED LINKS - A receiver circuit is described. In the receiver circuit, an analog-to-digital converter (ADC) generates first samples of a data signal based on a first clock signal, and a clock-data-recovery (CDR) error-detection circuit generates second samples of the data signal based on a second clock signal. In addition, the CDR error-detection circuit estimates intersymbol interference (ISI) at a current sample in the second samples from an adjacent, subsequent sample in the second samples. Based on the second samples and the estimated ISI, a CDR circuit generates the first clock signal and the second clock signal, which involves modifying the skews of either or both of these clock signals so that the current sample is associated with a zero crossing of a pulse response of a communication channel from which the data signal was received, thereby reducing or eliminating the ISI from the adjacent, subsequent sample. | 07-07-2011 |
20110261900 | MECHANISM FOR CONSTRUCTING AN OVERSAMPLED WAVEFORM FOR A SET OF SIGNALS RECEIVED BY A RECEIVER - A mechanism is provided for constructing an oversampled waveform for a set of incoming signals received by a receiver. In one implementation, the oversampled waveform is constructed by way of cooperation between the receiver and a waveform construction mechanism (WCM). The receiver receives the incoming signals, samples a subset of the incoming signals at a time, stores the subsets of sample values into a set of registers, and subsequently provides the subsets of sample values to the WCM. The WCM in turn sorts through the subsets of sample values, organizes them into proper orders, and “stitches” them together to construct the oversampled waveform for the set of incoming signals. With proper cooperation between the receiver and the WCM, and with proper processing logic on the WCM, it is possible to construct the oversampled waveform for the incoming signals without requiring large amounts of resources on the receiver. | 10-27-2011 |
20120033685 | SERIAL LINK VOLTAGE MARGIN DETERMINATION IN MISSION MODE - This disclosure describes systems and methods for determining a voltage margin (or margin) of a serializer/deserializer (SerDes) receiver in mission mode using a SerDes receiver. This is done by time-division multiplexing a margin determination and a tap weight adaptation onto the same hardware (or software, or combination of hardware and software). In other words, some parts of a SerDes receiver (e.g., an error slicer and an adaptation module) can be used for two different tasks at different times without degrading the effectiveness or bandwidth of the receiver. Hence, the disclosed systems and methods allow a SerDes receiver to determine the SerDes margin in mission mode and without any additional hardware or circuitry on the receiver chip. | 02-09-2012 |
20130077723 | CLOCK-DATA RECOVERY WITH NON-ZERO h(-1) TARGET - In a receiver circuit, a node receives a signal that carries data from a transmitter circuit. Moreover, a clock-data-recovery (CDR) circuit in the receiver circuit recovers an at-rate clock signal from the received signal. The CDR circuit recovers the clock signal without converging a first pulse-response precursor of the signal relative to a pulse-response cursor of the signal to approximately zero (e.g., with the first pulse-response precursor h(−1) converged to a non-zero value). Furthermore, the first pulse-response precursor corresponds to at least one precurosor or postcursor of the pulse-response other than the current sample. | 03-28-2013 |
20130259162 | Direct Feedback Equalization with Dynamic Referencing - A receiver circuit includes a first slicer coupled to receive data signals from a signal path and a reference voltage from a reference voltage path that is separate from the signal path. The first slicer is configured output a logic value based on a comparison between a voltage of the data signal and the reference voltage. The receiver circuit further includes a reference voltage generator configured to generate the reference voltage. The reference voltage generator is configured to dynamically generate the reference voltage based on logic values of previously received signals during operation in a first mode. During operation in a second mode, the reference voltage generator is configured to generate and provide the reference voltage as a static voltage. | 10-03-2013 |
20150015315 | Method and Apparatus for Duty Cycle Distortion Compensation - A method and apparatus for duty cycle distortion compensation is disclosed. In one embodiment, an integrated circuit includes a differential signal transmitter having a main data path and a compensation data path. The main data path includes a first and second differential driver circuits each having output terminals coupled to a differential output. A transmission controller is configured to transmit data into the main and compensation data paths, the data corresponding to pairs of sequentially transmitted bits including an odd data bit followed by an even data bit, and further configured to determine respective duty cycle widths for each of the odd and even data bits as received by the transmission controller. The transmission controller is configured to cause the first and second driver circuits to equalize the respective duty cycle widths of the odd and even data bits, as transmitted, based their respective duty cycle widths as received. | 01-15-2015 |
Patent application number | Description | Published |
20090221211 | SCOOT: A PHYSICAL ACTIVITY-PROMOTING GAME SYSTEM - The invention described herein provides game systems or devices that typically include a projector for projecting a plurality of images or colors at different positions in space, a source of music, and a controller configured to coordinate the presentation of the images or colors with the music. | 09-03-2009 |
20090221337 | PHYSICAL ACTIVITY-PROMOTING GAME UTILIZING NETWORKED MODULES - A system and method are provided for a physically active game whose underlying purpose is to increase the level of physical activity in adolescents, and to have the game and associated activity be enjoyable and engaging such that physical activity becomes engrained as a habit that counters obesity. The game system includes a set of networked game modules that players touch in a sequence as prescribed by a game logic The correct module to touch next in the sequence is indicated by a notifier, such as a light turning on or an audible signal emitting from the module. Sensors on the modules transmit a signal to a controller which activates transmission of the next module in the sequence to activate a notifier element. Game data may be used to compute a score and be applied to game statistics. Data from the game may be transmitted to a remote server for storage, transformation into comparative data, and displayed on a web page. | 09-03-2009 |
20090221338 | PHYSICAL EXERCISE VIDEO GAME METHOD AND APPARATUS - Described herein is a game and game system including one or more user motion tracking devices. In some embodiments, a heart rate sensor is also used to monitor the user. | 09-03-2009 |
20090221372 | FOOTPAD-BASED GAME AND GAMING SYSTEM - Described herein are games and game systems including a text messaging phone keypad foot mat. The phone keypad foot mat typically includes regions similar to the buttons of an enlarged telephone keypad. A user can step on these input regions (“buttons” or “keys”) to type a text. Thus, a player “types” a text message by stepping or dancing on the keyboard foot mat similar to the way that a text message may be typed by hand on a telephone keypad (e.g., sending a text message from a cell phone). Various games can be played using the devices, systems and methods described herein. | 09-03-2009 |
20090221401 | RHYTHM ROPE - The improved jump ropes devices described herein generally include a source of rhythmic sound, a sensor for determining the motion of the jump rope, and a visual output (e.g., feedback) for indicating how well a user is moving or jumping in time to the rhythmic component of the sound. The device may also include a controller for receiving input from the source of rhythmic sound and the sensor, and controlling the visual output. Methods of using the devices are also described. | 09-03-2009 |
20110130247 | RHYTHM ROPE - The improved jump ropes devices described herein generally include a source of rhythmic sound, a sensor for determining the motion of the jump rope, and a visual output (e.g., feedback) for indicating how well a user is moving or jumping in time to the rhythmic component of the sound. The device may also include a controller for receiving input from the source of rhythmic sound and the sensor, and controlling the visual output. Methods of using the devices are also described. | 06-02-2011 |
Patent application number | Description | Published |
20100169361 | METHODS AND APPARATUS FOR GENERATING A DATA DICTIONARY - There is provided a method and system generate a data dictionary for searching data items stored in an information resource. In one embodiment, the system generates a list of synonyms for keywords entered in search queries to the system. A keyword and synonym form a token pair. Token pairs are evaluated according to a bidirectional divergence value calculated for distributions of search results, wherein the searches are based on the token pairs. Token pairs are then selected based on the divergence value. The selected token pairs are compiled into a data dictionary. In one embodiment, the data dictionary is a synonym dictionary used for user search query expansion to find matching items. | 07-01-2010 |
20110184941 | METHODS AND SYSTEMS FOR SELECTING AN OPTIMIZED SCORING FUNCTION FOR USE IN RANKING ITEM LISTINGS PRESENTED IN SEARCH RESULTS - Methods and systems for simulating a search, for the purpose of evaluating one or more scoring functions used in ordering item listings for presentation in a search results page are described. Consistent with some embodiments, a simulation platform includes a real-time simulation module that receives search result sets for search queries that result in the conclusion of a transaction. The result set is then processed by the simulation platform with one or more test scoring functions, such that the resulting position of the item listing that has resulted in the transaction can be compared with the actual position at which the item listing was displayed in the actual search results. For each test scoring function, an average rank shift metric is determined, and displayed, thereby providing a metric with which to base decisions about which scoring functions to use in the production system. | 07-28-2011 |
20120191717 | METHODS AND APPARATUS FOR GENERATING A DATA DICTIONARY - There is provided an ecommerce method and system to generate a data dictionary for searching data items stored in a database. In one embodiment, the system comprises a candidate list generator module to generate a list of keywords from search query information and generate a set of token pairs including a keyword from the list of keywords and a token, the token being a synonym of the keyword. Demand information retrieved from query logs maintained for user-provided query entries is used to apply candidate selection rules to token pairs. The system also comprises a validation module and a data dictionary module to receive validated token pairs as entries in a vocabulary. | 07-26-2012 |
20120310973 | SYSTEM AND METHOD FOR DETERMINING QUERY ASPECTS AT APPROPRIATE CATEGORY LEVELS - In various example embodiments, a system and method for determining query aspects for appropriate categories is provided. In example embodiments, query data is collected. The query data indicates a query term and tracked user behavior associated with past queries involving the query term. An aspect demand ratio is calculated for each category of a category tree based on the collected query data. Using at least one processor, one or more lowest categories of the category tree that satisfies a category threshold is determined. The one or more lowest categories are then appended to the query term and stored in a database. | 12-06-2012 |
20120317120 | SYSTEM AND METHOD FOR MINING CATEGORY ASPECT INFORMATION - In various example embodiments, systems and methods for providing category aspect information by mining historical data is provided. In example embodiments, historical data is compiled. The historical data comprises user behavior data based on actions performed with past queries by users. Listing data is accessed. The listing data includes aspect data for each listing. The historical data is then joined with the listing data and a determined category of the listing to create joined data. Demand scores based on the joined data are determined. The determined demand scores is then sorted to determine at least one relevant aspect name for a category. | 12-13-2012 |
20140032517 | SYSTEM AND METHODS TO CONFIGURE A PROFILE TO RANK SEARCH RESULTS - A method and system to configure a profile to rank search results are provided. A profile that includes behavior information organized as a plurality of components is generated. Additional behavior information is received from a user. At least one component of the plurality of components is updated using the additional behavior information received from the user. A search query is received and search results are generated based on the search query. Search results are ranked based on the updated profile. | 01-30-2014 |
20140032532 | SPELL CHECK USING COLUMN CURSOR - An input query can be spell checked by first parsing the input query into one or more tokens. The one or more tokens are then compared against spell storage tables to derive alternative tokens. A spell cursor is launched, with the spell cursor calculating scores for permutations of the tokens and alternative tokens, and the scores representing a likelihood that a user intended to use the permutation as the input query. A memory table may then be formed including the permutations and scores. The memory table can then be passed to a column cursor, the column cursor designed to form an output table of results based on queries to a database using the permutations. | 01-30-2014 |
20140032593 | SYSTEMS AND METHODS TO PROCESS A QUERY WITH A UNIFIED STORAGE INTERFACE - Systems and methods to process a query with a unified storage interface are described. The system receives a query from a client machine and generates a query expression tree based on the query expression. The system generates a cursor expression tree based on the query expression tree. The system executes a plurality of software components in the cursor expression tree to retrieve data from a first storage device. The plurality of software components comprise a first software component that is utilized to retrieve data irrespective of a plurality of storage devices and a second software component that is utilized to retrieve data from a first storage device. Finally, the system communicates search results to the client machine, the search results include at least a portion of the data. | 01-30-2014 |
20140164387 | METHODS AND APPARATUS FOR GENERATING A DATA DICTIONARY - Systems and methods for generating data dictionaries are disclosed. In one example, a system comprises a candidate list generator module to generate a list of keywords from search query information, a validation module to validate candidate token pairs based on a divergence value wherein candidate token pairs having divergence values exceeding a divergence threshold are valid token pairs, and a data dictionary module to receive the validated token pairs as entries in a vocabulary, and provide the validated token pairs in response to a search query containing a keyword corresponding to at least one entry in the vocabulary. | 06-12-2014 |
20140222856 | SYSTEM AND METHODS TO CONFIGURE A QUERY LANGUAGE USING AN OPERATOR DICTIONARY - A method and a system to configure a query language using an operator dictionary are provided. Dictionary information that corresponds to a first user is generated. The dictionary information includes a first list of compatible query operators and a description of compatible data types that correspond to each operator in the first list of query operators. A search query to search for document information in a database is received from a first user. The database includes an inverted index. Terms of the search query from the first user are determined to be in accordance with the dictionary information that corresponds to the first user. The search query is applied to the inverted index in the database to identify the document information. The document information is sent to the first user. | 08-07-2014 |
Patent application number | Description | Published |
20090054475 | HETEROCYCLIC RECEPTOR AGONISTS FOR THE TREATMENT OF DIABETES AND METABOLIC DISORDERS - Compounds and methods are provided for the treatment of, inter alia, Type II diabetes and other diseases associated with poor glycemic control. The compounds of the invention are orally active. | 02-26-2009 |
20090137590 | N-LINKED HETEROCYCLIC RECEPTOR AGONISTS FOR THE TREATMENT OF DIABETES AND METABOLIC DISORDERS - Compounds and methods are provided for the treatment of, inter alia, Type II diabetes and other diseases associated with poor glycemic control. | 05-28-2009 |
20100087465 | HETEROCYCLIC RECEPTOR AGONISTS FOR THE TREATMENT OF DIABETES AND METABOLIC DISORDERS - Compounds and methods are provided for the treatment of, inter alia, Type II diabetes and other diseases associated with poor glycemic control. The compounds of the invention are orally active. | 04-08-2010 |
20100130511 | HETEROCYCLIC RECEPTOR AGONISTS FOR THE TREATMENT OF DIABETES AND METABOLIC DISORDERS - Compounds and methods are provided for the treatment of, inter alia, Type II diabetes and other diseases associated with poor glycemic control. The compounds of the invention are orally active. | 05-27-2010 |
20100190831 | GPR120 RECEPTOR AGONISTS AND USES THEREOF - GPR120 agonists are provided. These compounds are useful for the treatment of metabolic diseases, including Type II diabetes and diseases associated with poor glycemic control. | 07-29-2010 |
20100216827 | ARYL GPR120 RECEPTOR AGONISTS AND USES THEREOF - Aryl GPR120 agonists are provided. These compounds are useful for the treatment of metabolic diseases, including Type II diabetes and diseases associated with poor glycemic control. | 08-26-2010 |
20110313003 | GPR120 RECEPTOR AGONISTS AND USES THEREOF - GPR120 agonists are provided. These compounds are useful for the treatment of metabolic diseases, including Type II diabetes and diseases associated with poor glycemic control. | 12-22-2011 |
20120322804 | N-LINKED HETEROCYCLIC RECEPTOR AGONISTS FOR THE TREATMENT OF DIABETES AND METABOLIC DISORDERS - Compounds and methods are provided for the treatment of, inter alia, Type II diabetes and other diseases associated with poor glycemic control. | 12-20-2012 |
20130059845 | BICYCLIC AGONISTS OF GPR131 AND USES THEREOF - The present disclosure relates to compounds that act as agonists of, or otherwise modulate the activity of, GPR131 and to their use in the treatment of various diseases. In particular embodiments, the structure of the compounds is given by Formula I: | 03-07-2013 |
20130059856 | AGONISTS OF GPR131 AND USES THEREOF - Chemical compounds which act as agonists of, or otherwise modulate the activity of, GPR131 are disclosed. Related compositions, formulations and methods of use are also described. | 03-07-2013 |
20130109734 | GPR120 RECEPTOR AGONISTS AND USES THEREOF | 05-02-2013 |
20130131351 | GPR120 RECEPTOR AGONISTS AND USES THEREOF - GPR120 agonists are provided. These compounds are useful for the treatment of metabolic diseases, including Type II diabetes and diseases associated with poor glycemic control. | 05-23-2013 |
20130281691 | HETEROCYCLIC RECEPTOR AGONISTS FOR THE TREATMENT OF DIABETES AND METABOLIC DISORDERS - Compounds and methods are provided for the treatment of, inter alia, Type II diabetes and other diseases associated with poor glycemic control. The compounds of the invention are orally active. | 10-24-2013 |
20140121246 | GPR120 RECEPTOR AGONISTS AND USES THEREOF - GPR120 agonists are provided. These compounds are useful for the treatment of metabolic diseases, including Type II diabetes and diseases associated with poor glycemic control. | 05-01-2014 |
20140206892 | DCC Mediated Coupling for Halofenate Manufacture - The present application discloses a process for the preparation of a halofenate compound of the formula (III) or a salt thereof: | 07-24-2014 |
Patent application number | Description | Published |
20090253240 | Thick Oxide P-Gate NMOS Capacitor for Use In A Low-Pass Filter of a Circuit and Method of Making Same - A circuit with dielectric thicknesses is presented that includes a low-pass filter including one or more semiconductor devices having a thick gate oxide layer, while further semiconductor devices of the circuit have thin gate oxide layers. The low-pass filter semiconductor device includes an N-type substrate, a P-type region formed on the N-type substrate, a thick gate oxide layer formed over the P-type region, a P | 10-08-2009 |
20110260793 | Ground-referenced common-mode amplifier circuit and related method - Disclosed is an amplifier circuit configured to amplify a pulse stream. The amplifier circuit comprises a switching block including a first switch operable to couple an output node of the switching block to a positive reference voltage, a second switch operable to couple the output node to a ground reference voltage and a third switch operable to couple the output node to a negative reference voltage. The amplifier circuit is configured to amplify the pulse stream into an amplified signal detectable at the output node such that the amplified signal has a common-mode voltage level substantially equal to zero volts. In one embodiment, the amplifier circuit is configured to amplify the pulse stream in accordance with a Class-D amplification scheme. In one embodiment, the output node can be directly connected to a load device without a DC blocking capacitor being interposed between the output node and the load device. | 10-27-2011 |
20120013402 | Closed-loop class-d amplifier with modulated reference signal and related method - Disclosed is a closed-loop class-D amplifier circuit including a modulated reference signal generator that provides a modulated reference signal in a feed-forward path, where the reference signal is modulated corresponding to an input signal. The closed-loop class-D amplifier circuit further includes a comparator to generate a control signal based on a comparison of the modulated reference signal and a correction signal, which in turn is produced by filtering a combination of the input signal and a feedback signal. The closed-loop class-D amplifier circuit also includes a pulse generator to generate a pulse-width-modulated signal to drive an output stage of the closed-loop class-D amplifier based on the control signal. | 01-19-2012 |
20120025910 | Switching amplifier with enhanced supply rejection and related method - Disclosed is a switching amplifier having an enhanced supply rejection. The switching amplifier comprises a digital modulator that provides a modulated signal. The switching amplifier further comprises a closed-loop analog driver that is coupled to the digital modulator. As disclosed, the closed-loop analog driver is configured to re-modulate a modulation signal that corresponds to the modulated signal. An output stage of the switching amplifier is driven by the re-modulated signal, thereby providing enhanced supply rejection. In one embodiment, the modulated signal is produced by a digital pulse-width modulator (PWM) circuit of a Class-D amplifier, and has a pulse rate substantially less than a clock rate of the digital PWM circuit. In one embodiment, the switching amplifier is implemented as an audio amplifier in a mobile communication device such as a cellular telephone. | 02-02-2012 |
20120086592 | Integrated Upstream Amplifier for Cable Modem and Cable Set-Top Boxes - An upstream amplifier is integrated on a substrate with a digital-to-analog converter (DAC) to form an integrated circuit. In an embodiment, a low-pass filter is also integrated on the substrate. The output signal level of the upstream amplifier is controllable. In embodiments, fine adjustments are made to the output signal level of the upstream amplifier by varying a bias current of the DAC. A software control bit is used to switch between a power-on mode of operation and a power-down mode of operation. The upstream amplifier transmits in a burst mode. The power consumption of the upstream amplifier scales with the amplifier's output signal level. A high degree of matching is attained between the positive and negative paths of the upstream amplifier. This provides high immunity from common-mode disturbances such as substrate noise, clock spurs, and glitches caused by a gain change. | 04-12-2012 |
20140079246 | Distortion Limiter and Automatic Power Control for Drivers - Systems and methods are disclosed to provide automatic power control for a driver circuit. Embodiments disclosed herein enable a driver circuit to automatically decrease the gain of amplified input signals when output power exceeds a threshold. Further, embodiments disclosed herein enable a driver circuit to automatically increase the gain of amplified input signals when battery supply voltage drops to avoid unwanted output signal distortion. By using reference signals for battery power and amplified signal input, the amplifiers of the driver circuit can be automatically adjusted until an equilibrium is reached. | 03-20-2014 |
20140254779 | Integrated CMOS Multi-mode Drivers - A multi-mode line driver circuit designed to be fabricated in a CMOS process and capable of supporting a plurality of operating modes corresponding, for example, to different profiles of communication standards such as xDSL standards. The line driver circuit incorporates integrated mode switches with a two-stage amplifier architecture to relax amplifier requirements by distributing the signal gain into two amplifier stages. Reconfigurable feedback loops are provided to permit design optimization for particular modes of operation (e.g., ADSL and VDSL compliant modes). In one embodiment implemented as a Class-H amplifier, lift amplifier(s) are provided between a first amplifier stage and a second amplifier stage for controlling voltage supply levels of the second amplifier stage. The lift amplifiers may be enabled by voltage threshold detection circuitry that monitors either the input or the output signals of the first amplifier stage depending on the operable transmission mode. | 09-11-2014 |
Patent application number | Description | Published |
20080273583 | CHANNEL ESTIMATION FOR OFDM-BASED WIRELESS COMMUNICATION SYSTEM USING SPARSELY SPACED PILOT SUBCARRIERS - A device and method for performing a channel estimation for an OFDM-based wireless communication system using sparsely spaced pilot subcarriers estimates missing pilot subcarriers in an interpolation window using pilot subcarriers that are outside of the interpolation window to produce estimated pilot subcarriers for the interpolation window. The pilot subcarriers in the interpolation window and the estimated pilot subcarrier are used to compute pilot channel estimates for the interpolation window, which are then used to derive data channel estimates for the interpolation window. | 11-06-2008 |
20080273615 | CHANNEL PROFILE ESTIMATION FOR OFDM-BASED COMMUNICATION SYSTEM - A device and method for performing a channel profile estimation for an OFDM-based wireless communication system uses an averaged frequency coherence metric to select a particular channel profile, which is a current channel profile estimate. The averaged frequency coherence metric is derived using correlations between pilot subcarriers of an OFDM-based signal at predefined subcarrier locations for multiple frames of the OFDM-based signal. The selected channel profile may be used for channel estimation, as well as for link adaptation, to improve the performance of these processes. | 11-06-2008 |
20080276147 | SYSTEM AND METHOD FOR PERFORMING A HARQ OPERATION IN AN OFDM-BASED RECEIVER - A system and method for performing a HARQ operation in an OFDM-based receiver utilizes a linked list scheme for a HARQ buffer, which is used to store soft information for HARQ entities with decoding errors. The device and method also combine soft information of a particular HARQ entity with previous updated soft information of the particular HARQ entity using a combined scaling factor that depends on a current scaling factor and a previous combined scaling factor. | 11-06-2008 |
20080291819 | SOFT-BIT DE-MAPPING DEVICE AND METHOD OF GENERATING SOFT BITS FOR DECODING - A soft-bit de-mapping device and method of generating soft bits for decoding quantizes a log-likelihood ratio (LLR) value for a received value using functions bits and channel parameter bits to generate the soft bits. The function bits are generated by quantizing an LLR function for the received value, which includes modifying an original curve of the LLR function to a modified curve such that a segment of the original curve with the lowest slope is protected in the modified curve for a fixed equal quantization step-size. The channel parameter bits are generated by quantizing a channel parameter for the received value to generate channel. | 11-27-2008 |
20100195747 | METHOD AND APPARATUS FOR PERFORMING JOINT DETECTION WITH A COMMON MIDAMBLE - Techniques for performing joint detection with a common midamble for downlink transmission are described. In one design, a user equipment (UE) may obtain samples for a burst transmitted by a Node B on the downlink. The burst may include at least one data field and a common midamble. The UE may derive a channel impulse response estimate for each of multiple orthogonal codes based on (i) a channel impulse response estimate derived based on samples for the common midamble and (ii) a traffic-to-pilot ratio (T2P) estimated for that orthogonal code based on the samples for burst. The UE may perform joint detection, for the multiple orthogonal codes, on samples for the at least one data field based on the multiple channel impulse response estimates. | 08-05-2010 |
20120115553 | ADAPTIVE ANTENNA DIVERSITY SYSTEM - Electronic devices may be provided that contain wireless communications circuitry. The wireless communications circuitry may include radio-frequency transceiver circuitry with first and second ports that are coupled by switching circuitry to first and second antennas. A first receiver in the transceiver circuitry may be associated with the first port and a second receiver in the transceiver circuitry may be associated with the second port. An electronic device may be operated in a single receiver mode in which only one of the receivers is active to conserve power or a dual receiver mode in which signals from both antennas may be received in parallel to compare antenna performance. Based on antenna performance metrics, the electronic device may adjust the switching circuitry to ensure that an optimal antenna is being used. | 05-10-2012 |
20120281553 | IDLE MODE RECEIVE ANTENNA DIVERSITY SYSTEM - Electronic devices may be provided that contain wireless communications circuitry. The wireless communications circuitry may include radio-frequency transceiver circuitry coupled to multiple antennas. An electronic device may alternate between a sleep mode and a wake mode. During wake mode, the electronic device may monitor a paging channel in a wireless network for incoming paging signals. The device may use either a single antenna mode or a multiple antenna mode such as a dual antenna mode in monitoring the paging channel. In the single antenna mode, a single active antenna is used to receive paging signals. In the dual antenna mode two antennas are simultaneously used to receive paging signals. The device may choose which antenna mode to use based on signal quality measurements and history information on successfully received paging signals. | 11-08-2012 |
20120282982 | ELECTRONIC DEVICE WITH IDLE MODE ANTENNA SWITCHING - Electronic devices may be provided that contain wireless communication circuitry. The wireless communication circuitry may include radio-frequency transceiver circuitry coupled to multiple antennas. An electronic device may alternate between a sleep mode and a wake mode. During wake mode, the electronic device may monitor a paging channel in a wireless network for incoming paging signals. The device may use a selected one of the multiple antennas in monitoring the paging channel. If received signal quality is satisfactory, the device may maintain use of the selected one of the multiple antennas for subsequent wake period monitoring of the paging channel. If received signal quality falls below a threshold or is otherwise indicated to not be satisfactory, the device may switch to use of a different one of the multiple antennas in monitoring the paging channel. Other criteria may also be used in controlling the switching between antennas for paging channel monitoring. | 11-08-2012 |
20130033996 | ELECTRONIC DEVICE WITH ANTENNA SWITCHING CAPABILITIES - Electronic devices may be provided that contain wireless communications circuitry capable of supporting time division multiple access. The wireless communications circuitry may include radio-frequency transceiver circuitry coupled to multiple antennas. Signal strength measurements may be gathered using the antennas and corresponding signal strength difference measurements may be computed to reflect which of the antennas is exhibiting superior performance. The signal strength measurements may be made by measuring receive power levels in a beacon channel during idle time slots while toggling its antennas in and out of use or by detecting for the presence of non-silent traffic channel frames or silence indicator description frames and measuring corresponding receive power levels while toggling its antennas in and out of use. Beacon-channel-based measurements and non-silent-frame-based measurements may be used for electronic devices with receive diversity by simultaneously receiving frames of interest using each of its antennas and making corresponding measurements in parallel. | 02-07-2013 |
20130035051 | ANTENNA SWITCHING SYSTEM WITH ADAPTIVE SWITCHING CRITERIA - Electronic devices may be provided that contain wireless communications circuitry. The wireless communications circuitry may include radio-frequency transceiver circuitry coupled to multiple antennas. Signal strength measurements may be gathered using the antennas and corresponding signal strength difference measurements may be produced to reflect which of the antennas is exhibiting superior performing. The signal strength difference measurements may be filtered using time-based averaging filters with different speeds. Corresponding filtered difference measurements may be compared to antenna switching criteria such as antenna switching thresholds. An antenna switching threshold may be adjusted in real time based on computations of how much variation is exhibited as a function of time between the difference measurements filtered using the filters of different speeds. Information on device movement or other data may be used in making threshold adjustments. | 02-07-2013 |
20130035084 | ADAPTIVE RANDOM ACCESS CHANNEL RETRANSMISSION - A mobile wireless device adapts transmit power levels and number of retransmissions of a preamble sent to a wireless network. The mobile wireless device measures characteristics of a downlink signal received from the wireless network. The mobile wireless device transmits a series of preambles to the wireless network, each successive preamble having an increased power level, starting at a power level based on the measured received signal characteristics and on parameters received from the wireless network, up to a maximum transmit power level. When the transmit power level of the preamble exceeds the maximum transmit power level and when the measured downlink signal quality falls below a threshold, the mobile wireless device limits the number of preamble retransmission to less than an allowed maximum number of retransmissions. A minimum number of retransmissions is determined and adapted to higher values for larger measured values of downlink signal quality. | 02-07-2013 |
20130035103 | METHODS FOR TRANSMIT ANTENNA SWITCHING DURING UPLINK ACCESS PROBING - Electronic devices may be provided that contain wireless communication circuitry. The wireless communication circuitry may include radio-frequency transceiver circuitry coupled to first and second antennas. An electronic device may send network access probe signals to a base station in a wireless network. If the base station responds with a corresponding acknowledgement, the electronic device and base station may establish a wireless communication link such as a cellular telephone link. In response to failure to receive the acknowledgement signal from the base station, the electronic device may increase the transmit power of a successive network access probe signal. The electronic device may switch between use of the first and second antennas when transmitting the network access probe signals. The electronic device may alternate between the first and second antennas or may use other antenna usage patterns. | 02-07-2013 |
20130064151 | ADAPTIVE RECEIVE DIVERSITY DURING DISCONTINUOUS RECEPTION IN MOBILE WIRELESS DEVICE - A mobile wireless device adapts receive diversity during discontinuous reception based on downlink signal quality, page indicators and page messages. When the downlink signal quality exceeds a pre-determined threshold, the mobile wireless device decodes a page indicator channel through an initial antenna, and otherwise, decodes a paging channel through the initial antenna without decoding the page indicator channel. The mobile wireless device switches to decoding the paging channel through an alternate antenna when a page indicator decodes as an erasure. When a paging message received through a single antenna decodes with an incorrect error checking code, the mobile wireless devices enables receive diversity through multiple antennas for subsequent decoding. The mobile wireless device switches between single antenna reception and multiple antenna reception based on tracking multiple consecutive error checking code failures and successes. | 03-14-2013 |
20130250785 | Adaptive Partial Packet Decoding - A user device receives packets from a base station. The user device may invoke decoding while the packet is still being received, based on the incomplete contents of a given packet. This “partial packet decoding” relies on the fact that the underlying information in the packet is encoded with redundancy (code rate less than one). If link quality is poor, the partial packet decoding is likely to be unsuccessful, i.e., to fail in its attempt to recover the underlying information. To avoid waste of power, the user device may be configured to apply one or more tests of link quality prior to invoking the partial packet decoding on a current packet. | 09-26-2013 |
20130267267 | Assisted Management of Radio Resources across Dual Networks - A user equipment (UE) operating in a communication system comprising a base station and one or more UEs. The UE may be configured to operate on or “camp” on two different networks with one radio. In this exemplary system, the radio may be normally connected to the first network (NW | 10-10-2013 |
20130272212 | METHOD FOR IMPLEMENTING AUTONOMOUS MANAGEMENT OF RADIO RESOURCES ACROSS DUAL NETWORKS - Managing radio resources across dual networks includes a wireless mobile device connecting to a first wireless network using a first radio access technology. The wireless device may notify the first network of a capability to be temporarily non-responsive to the first network while maintaining a signaling connection to the first network. The wireless device may communicate with a second network. The wireless device may return to communicating with the first network subsequent to communicating with the second network, and in response to communicating with the second network for less than a predetermined amount of time, the wireless device may send a scheduling request to the first network. In response to receiving a grant acknowledgement from the first network, the wireless device may send a buffer status report that includes a value such as zero to indicate that the wireless device has returned to and can communicate with the first network. | 10-17-2013 |
20130310057 | Fast Communication Recovery in Dual Network Radio Resource Management - Various embodiments are disclosed of a method and apparatus for fast communication recovery in wireless mobile devices arranged to perform dual network radio resource management. In one embodiment, a wireless mobile device includes a transceiver configured to communicate with each of first and second networks. After establishing and maintaining a link with the first network, the wireless mobile device may tune a transceiver to the second network to monitor for traffic, subsequently tuning back to the first network. After turning the transceiver back to the first network, the wireless mobile device may perform one or more attempts to restore the link to the first network. The number of attempts to restore the link is dependent upon an amount of time the transceiver is tuned to the second network. | 11-21-2013 |
20140003260 | Modulation and Coding Scheme (MCS) Recovery based on CQI Offset | 01-02-2014 |
20140071844 | POWER MANAGEMENT BASED ON ADAPTIVE RECEIVER SELECTION - In order to reduce power consumption of an electronic device during wireless communication, the electronic device may transition between a baseline (simple) receiver and a higher-power advanced receiver based on network conditions and/or environmental conditions. For example, the transition to the advanced receiver may occur when it offers improved communication performance over the baseline receiver, such as when there is significant interference and a high data rate, or when there is significant interference and a signal-to-noise ratio (SNR) is low. Similarly, the transition to the baseline receiver may occur when the capabilities of the advanced receiver are not needed, such as when there is less interference, or when the data rate is lower and the SNR is high. In this way, the electronic device can avoid the added power consumption associated with the advanced receiver except where the communication performance offered by the advanced receiver is needed. | 03-13-2014 |
20140126397 | DYNAMICALLY ADAPTING WIRELESS COMMUNICATION - In order to facilitate communication between an electronic device and another electronic device, the electronic device determines communication-quality metrics for a first connection in a wireless network based on received information from the other electronic device. Then, the electronic device calculates an overall communication-quality indicator for the first connection based on at least some of the communication-quality metrics. Moreover, the electronic device dynamically adapts the communication with the other electronic device based on the overall communication-quality indicator. For example, the electronic device may establish a second connection in a cellular-telephone network and may use the second connection to communicate with the other electronic device. Alternatively, the electronic device may provide the overall communication-quality indicator to the other electronic device and may at least partially transition the communication from the second connection in the cellular-telephone network to the first connection in the wireless network. | 05-08-2014 |
20140220916 | Adaptive Receive Diversity during Discontinuous Reception in Mobile Wireless Device - A mobile wireless device adapts receive diversity during discontinuous reception based on downlink signal quality, page indicators and page messages. When the downlink signal quality exceeds a pre-determined threshold, the mobile wireless device decodes a page indicator channel through an initial antenna, and otherwise, decodes a paging channel through the initial antenna without decoding the page indicator channel. The mobile wireless device switches to decoding the paging channel through an alternate antenna when a page indicator decodes as an erasure. When a paging message received through a single antenna decodes with an incorrect error checking code, the mobile wireless devices enables receive diversity through multiple antennas for subsequent decoding. The mobile wireless device switches between single antenna reception and multiple antenna reception based on tracking multiple consecutive error checking code failures and successes. | 08-07-2014 |
Patent application number | Description | Published |
20080198941 | LOW-COMPLEXITY SCALABLE ARCHITECTURE FOR CONCATENATION-ASSISTED SYMBOL-LEVEL COMBINING - Systems and methods are provided for decoding signal vectors in multiple-input multiple-output (MIMO) systems, where a receiver has received one or more signal vectors from the same transmitted vector. The receiver processes these received signal vectors one by one, and uses information from signal vectors that have already been processed to process the next signal vector. To process a current signal vector, the receiver concatenates the current signal vector with a previously processed signal vector. This concatenated signal vector is decoded using, for example, a maximum-likelihood (ML). To decode the concatenated signal vector, the ML decoder can use a concatenated channel matrix that includes a channel response matrix associated with the current signal vector and a processed version of previous channel response matrices. | 08-21-2008 |
20120069935 | SYMBOL-LEVEL COMBINING FOR MULTIPLE INPUT MULTIPLE OUTPUT (MIMO) SYSTEMS WITH HYBRID AUTOMATIC REPEAT REQUEST (HARQ) AND/OR REPETITION CODING - Systems and methods are provided for decoding signal vectors in multiple-input multiple-output (MIMO) systems, where the receiver has received one or more signal vectors from the same transmitted vector. The symbols of the received signal vectors are combined, forming a combined received signal vector that may be treated as a single received signal vector. The combined signal vector is then decoded using a maximum-likelihood decoder. In some embodiments, the combined received signal vector may be processed prior to decoding. Systems and methods are also provided for computing soft information from a combined signal vector based on a decoding metric. Computationally intensive calculations can be extracted from the critical path and implemented in preprocessors and/or postprocessors. | 03-22-2012 |
20120121005 | CONCATENATION-ASSISTED SYMBOL-LEVEL COMBINING FOR MIMO SYSTEMS WITH HARQ AND/OR REPETITION CODING - Systems and methods are provided for decoding signal vectors in multiple-input multiple-output (MIMO) systems, where the receiver has received one or more signal vectors from the same transmitted vector. The receiver combines the received vectors by vector concatenation The concatenated vector may then be decoded using, for example, maximum-likelihood decoding. In some embodiments, the combined signal vector is equalized before decoding. | 05-17-2012 |
20130083836 | CONCATENTATION-ASSISTED SYMBOL-LEVEL COMBINING FOR MIMO SYSTEMS WITH HARQ AND/OR REPETITION CODING - Systems and methods are provided for decoding signal vectors in multiple-input multiple-output (MIMO) systems, where the receiver has received one or more signal vectors from the same transmitted vector. The receiver combines the received vectors by vector concatenation The concatenated vector may then be decoded using, for example, maximum-likelihood decoding. In some embodiments, the combined signal vector is equalized before decoding. | 04-04-2013 |
20130242777 | CARRIER AGGREGATION SCHEDULING BASED ON TRAFFIC CHARACTERISTICS AND CELL CHARACTERISTICS - A method, implemented by one or more processors, for scheduling traffic streams in a communication network includes determining, via a processor, a plurality of sets of one or more cell characteristics. Each set of cell characteristics in the plurality of sets of cell characteristics corresponds to a different cell in a plurality of cells. The method also includes determining, via a processor, a first set of one or more traffic characteristics corresponding to a first traffic stream, selecting, via a processor, a first cell from the plurality of cells based on (i) the plurality of sets of cell characteristics and (ii) the first set of traffic characteristics, and assigning, via a processor, the first traffic stream to the first cell for an entire duration of the first traffic stream. | 09-19-2013 |
20140078961 | METHOD AND SYSTEM FOR DETECTING SYNCHRONIZATION SIGNALS IN A MOBILE COMMUNICATIONS PROTOCOL - A method of detecting a secondary synchronization signal in a received signal having desired primary and secondary synchronization signals, and interfering primary and secondary synchronization signals, includes providing information regarding primary synchronization signal location and, based on the information regarding primary synchronization signal location, performing successive interference cancellation to remove the interfering secondary synchronization signals for detecting the desired secondary synchronization signal, without performing successive interference cancellation on the primary synchronization signals. Apparatus for detecting a secondary synchronization signal in a received signal having (i) desired primary and secondary synchronization signals and (ii) interfering primary and secondary synchronization signals includes a source of information regarding primary synchronization signal location, and successive interference cancellation circuitry. The successive interference cancellation circuitry uses the information regarding primary synchronization signal location to remove interfering secondary synchronization signals for detecting the desired secondary synchronization signal, without performing successive interference cancellation on the primary synchronization signals. | 03-20-2014 |
20140211766 | IN-DEVICE COEXISTENCE OF MULTIPLE WIRELESS COMMUNICATION TECHNOLOGIES - In a method of operating a device configured to communicate according to at least a first communication protocol and a second communication protocol, a time division multiplexing (TDM) pattern is obtained. The TDM pattern is defined for communication according to the first communication protocol is obtained. The TDM pattern defines communication periodicity that includes a scheduled period and an unscheduled period. A guard interval is reserved within the unscheduled period, and the unscheduled period is used for communication according to the second communication protocol. The guard interval is used to transition to an inactive state with respect to the second communication protocol. | 07-31-2014 |
20140273869 | SYSTEMS AND METHODS FOR LTE INTERFERENCE DETECTION - Systems and methods are provided for identifying whether a signal is an LTE signal. The method includes receiving, using control circuitry, a signal. The method includes computing a measurement of the received signal, determining a signal parameter corresponding to a system parameter specific to an LTE standard, and identifying whether the received signal is an LTE signal based on the determined signal parameter. | 09-18-2014 |
20140274202 | IN-DEVICE COEXISTENCE OF WIRELESS COMMUNICATION TECHNOLOGIES - In a method of operating a communication device that includes at least (i) a first network interface configured to operate according to a first communication protocol and (ii) a second network interface configured to operate according to a second communication protocol, the first communication interface is operated according to the first communication protocol. The first communication protocol defines a periodically repeating set of time intervals. One or more time intervals, from the set of time intervals, that meet a selection criteria are determined. The selection criteria is based on level of interference experienced by the first network interface. During the determined one or more time intervals, operation of the first network interface according to the first communication protocol is suspended, and operation of the second network interface according to the second communication protocol is enabled. | 09-18-2014 |
20140293912 | TERMINATION OF WIRELESS COMMUNICATION UPLINK PERIODS TO FACILITATE RECEPTION OF OTHER WIRELESS COMMUNICATIONS - The present disclosure describes systems and techniques relating to wireless communications by devices that employ more than one wireless communication technology. According to an aspect of the described systems and techniques, a device includes: a first radio configured to communicate wirelessly with a first station in accordance with a first wireless communication technology, a second radio configured to communicate wirelessly with a second station in accordance with a second wireless communication technology, a controller configured to (i) terminate scheduled portions of time for sending communications from the first radio to the first station in favor of receiving communications from the second station to the second radio and (ii) restrict which of all available scheduled portions of time for sending communications from the first radio to the first station are provided for termination based on information about types of data transmitted in respective ones of the available scheduled portions of time. | 10-02-2014 |
20140369278 | METHOD AND APPARATUS FOR MITIGATING THE EFFECT OF CERTAIN TYPES OF INTERFERENCE ON A SIGNAL RECEIVED IN A WIRELESS NETWORK - A system including an interference module. The interference module is configured to determine, based on first data to be transmitted from a wireless communication device, information about interference predicted to be caused by the first data being transmitted, and provide, to a receiver of the wireless communication device, the information about the predicted interference. A component of the receiver of the wireless communication device is configured to receive, from the interference module, the information about the predicted interference, and adjust, for a duration of the predicted interference, a function performed by the component of the receiver. The function performed by the component of the receiver is related to processing a signal received by the receiver of the wireless communication device. | 12-18-2014 |
Patent application number | Description | Published |
20100083200 | METHODS, SYSTEM, AND COMPUTER PROGRAM PRODCUT FOR IMPLEMENTING COMPACT MANUFACTURING MODEL IN ELECTRONIC DESIGN AUTOMATION - Disclosed are a method, a system, and a computer program product for implementing compact manufacturing model during various stages of electronic circuit designs. In some embodiments, the method or the system receives or identifies physics based data. In some embodiments, the method or the system receives or identifies the physics based data for the corresponding manufacturing process by using the golden manufacturing process model. In some embodiments, the method or the system uses the physics based data to fine tune, modify, or adjust the golden manufacturing process model. In some embodiments, the method or the system invokes the just-right module. In some embodiments, the method or the system implements the compact manufacturing model and the correct-by-design module and provides guidelines for the various stages of the electronic circuit design. | 04-01-2010 |
20100162188 | METHOD AND SYSTEM PERFORMING BLOCK-LEVEL RC EXTRACTION - A method, system, and computer program product are disclosed for performing RC extraction from the perspective of the block level. A translation mechanism is employed to convert from a full-chip design domain to a block-level design domain. This allows model-based prediction results to be used in the early design implementation flow when parasitic RC and timing extractions are performed, where the model-based prediction results relate to predictions of manufacturing variations such as thickness and topography. | 06-24-2010 |
20100325595 | METHOD AND SYSTEM PERFORMING RC EXTRACTION - A method, system, and computer program product are disclosed for performing RC extraction. The present approach can consider multiple types of manufacturing processes, and allows location-based prediction data to be used in the context of net-based analysis. RC extraction can be more accurately performed based upon net-specific top and bottom adjustments to thickness prediction that are location-based. The net-based prediction data can be used for other purposes as well, such as to perform electrical hotspot analysis, to visually display physical properties of the nets, or allow queries for other data analysis purposes. | 12-23-2010 |
Patent application number | Description | Published |
20100303685 | MIXING DEVICE FOR A DOWN-FLOW REACTOR - The present invention provides a novel means to provide more effective mixing of gas and fluids in a height constrained interbed space of a catalytic reactor without increasing pressure drop. In particular, the device improves the effectiveness of an existing mixing volume in mixing the gas phase and liquid phase of two-phase systems. According to the present invention, the mixing device helps create a highly arcuate flow to incoming effluents and a high degree of mixing within a constrained interbed space of a catalytic reactor. | 12-02-2010 |
20110081282 | Flow distribution device for downflow catalytic reactors - The invention is a fluid distribution device for coupling with a fluid distribution conduit or chimney for improving the distribution of downwardly flowing poly-phase mixture including at least one gas phase and at least one liquid phase, above at least one catalyst bed of granular solid catalytic material. The fluid distribution device for receiving the liquid and gas phases has one or more openings in the top and/or upper portion of its height through which a gas phase can enter and has a gas conduit that opens to a mixing cavity within the device. The fluid distribution device further comprises one or more lateral openings for liquid ingress. The lateral opening or openings allow the liquid to enter a liquid conduit that opens to the internal mixing cavity. The mixing cavity allows intimate contact between the liquid and gas phases. Therefore the flow distribution device of the invention provides improved tolerance for tray out of levelness. | 04-07-2011 |
20120014847 | MULTIPHASE CONTACT AND DISTRIBUTION APPARATUS FOR HYDROPROCESSING - Systems and apparatus for mixing, cooling, and distributing multiphase fluid mixtures within a reactor, wherein reactor internal apparatus of the present invention provides not only improved fluid mixing and distribution to each underlying catalyst bed surface, but also offers other advantages including: decreased mixing tray height; easier maintenance, assembly and disassembly; and decreased amounts of fabrication material. In an embodiment, fluid may be evenly distributed to a catalyst bed from a fluid distribution unit comprising a nozzle tray including a plurality of nozzles, wherein the nozzles include at least one liquid inlet disposed tangentially to an inner surface of the nozzle. | 01-19-2012 |
20120014849 | MULTIPHASE CONTACT AND DISTRIBUTION APPARATUS FOR HYDROPROCESSING - Systems and apparatus for mixing, cooling, and distributing multiphase fluid mixtures within a reactor, wherein reactor internal apparatus of the present invention provides not only improved fluid mixing and distribution to each underlying catalyst bed surface, but also offers other advantages including: decreased mixing tray height; easier maintenance, assembly and disassembly; and decreased amounts of fabrication material. In an embodiment, fluid may be evenly distributed to a catalyst bed from a fluid distribution unit comprising a nozzle tray including a plurality of nozzles, wherein the nozzles include at least one liquid inlet disposed tangentially to an inner surface of the nozzle. | 01-19-2012 |
Patent application number | Description | Published |
20090170964 | MEMBRANE REACTOR WITH IN-SITU DEHYDRATION AND METHOD FOR USING THE SAME - A fixed bed membrane reactor is disclosed. The reactor has a housing including an inlet for receiving reactants and an outlet for discharging retentate streams of reaction products. The inlet and outlet are in fluid communication with a reaction zone in which the reactants may passe downstream from the inlet to the outlet with the reactants reacting to produce reaction products including water. The reactor further includes a membrane assembly disposed in fluid communication with the reaction zone. The membrane assembly includes at least one porous support with a water permselective membrane affixed thereto. The membrane allows water produced in the reaction zone to be selectively removed from the reaction zone as a permeate stream while allowing retentate reaction products to remain in the reaction zone and be discharged as a retentate stream. Ideally, the membrane assembly locates most of the membrane proximate the downstream portion of the reaction zone where accumulated produced water may be selectively removed from the reaction product as opposed to the upstream portion where relatively little water accumulation has occurred. A method for using the reactor to perform in situ water dehydration of reactions, such as Fischer-Tropsch reaction, is also disclosed. | 07-02-2009 |
20130064740 | VORTEX-TYPE MIXING DEVICE FOR A DOWN-FLOW HYDROPROCESSING REACTOR - The present invention is directed to a vortex-type mixing device for a down-flow hydroprocessing reactor. In particular, the device improves the effectiveness of an existing mixing volume in mixing the gas phase and liquid phase of two-phase systems. According to the present invention, the mixing device helps create a highly arcuate flow to incoming effluents and a high degree of mixing within a constrained interbed space of a hydroprocessing reactor. | 03-14-2013 |
20130082125 | MULTIPHASE CONTACT AND DISTRIBUTION APPARATUS FOR HYDROPROCESSING - Systems and apparatus for mixing, cooling, and distributing multiphase fluid mixtures within a reactor, wherein reactor internal apparatus of the present invention provides not only improved fluid mixing and distribution to each underlying catalyst bed surface, but also offers other advantages including: decreased mixing tray height; easier maintenance, assembly and disassembly; and decreased amounts of fabrication material. In an embodiment, fluid may be evenly distributed to a catalyst bed from a fluid distribution unit comprising a nozzle tray including a plurality of nozzles, wherein the nozzles include at least one liquid inlet disposed tangentially to an inner surface of the nozzle. | 04-04-2013 |
20130142700 | FLOW DISTRIBUTION FOR MONOLITHIC REACTORS - Systems, apparatus, and methods for distributing a mixed phase fluid to a monolith catalyst bed within a reactor, wherein a mixed phase fluid may be generated by a nozzle tray comprising a plurality of nozzles, the mixed phase fluid may be distributed by the nozzles to a mixed phase distributor system, and the mixed phase fluid may be further distributed by the mixed phase distributor system to a plurality of monolith channels within the reactor. | 06-06-2013 |
20140147352 | APPARATUS AND METHOD FOR HYDROCONVERSION - An apparatus is disclosed for the hydroconversion of hydrocarbon feedstock with a hydrogen gas at elevated temperature and pressure with the use of a catalyst. The apparatus is a reactor vessel with a grid plate distributor for improved gas liquid distribution. The distributor comprises a grid plate and a bubble cap assembly with a plurality of tubular risers extending through the grid plate. Each tubular riser has an upper section above the grid plate and a lower section below the grid plate, the lower section terminated with an open bottom end for ingress of the hydrogen gas and hydrocarbon feedstock, the upper section having a closed top terminated with a housing cap. Each tubular riser has at least a vertical slot and a least a laterally placed opening sufficiently sized such that in operation, the liquid level in the zone below the grid plate is above the vertical slot and below the laterally placed opening. | 05-29-2014 |
20140183275 | FLOW DISTRIBUTION FOR MONOLITHIC REACTORS - Systems, apparatus, and methods for distributing a mixed phase fluid to a monolith catalyst bed within a reactor, wherein a mixed phase fluid may be generated by a nozzle tray comprising a plurality of nozzles, the mixed phase fluid may be distributed by the nozzles to a mixed phase distributor system, and the mixed phase fluid may be further distributed by the mixed phase distributor system to a plurality of monolith channels within the reactor. | 07-03-2014 |
20140183282 | FLOW DISTRIBUTION FOR MONOLITHIC REACTORS - Systems, apparatus, and methods for distributing a mixed phase fluid to a monolith catalyst bed within a reactor, wherein a mixed phase fluid may be generated by a nozzle tray comprising a plurality of nozzles, the mixed phase fluid may be distributed by the nozzles to a mixed phase distributor system, and the mixed phase fluid may be further distributed by the mixed phase distributor system to a plurality of monolith channels within the reactor. | 07-03-2014 |
Patent application number | Description | Published |
20100253405 | TECHNIQUES FOR NON-OVERLAPPING CLOCK GENERATION - Techniques for generating precise non-overlap time and clock phase delay time across a desired frequency range are provided. In one configuration, a device includes a non-overlapping clock generation circuit which comprises a delay lock loop (DLL) circuit that in turn generates a control voltage to a clock generator circuit coupled thereto. The control voltage operates to maintain precise timing relationship of non-overlapping delayed clock signals generated by the clock generator circuit. In one aspect, the DLL circuit receives an input clock with a known duty cycle and derives an output control voltage to fix the unit delay to a certain portion of the input clock cycle. In a further aspect, the clock generator circuit includes a plurality of voltage-controlled delay cells coupled to the DLL circuit to generate a first set of clock signals and a second set of clock signals delayed from the first set of clock signals by a non-overlapping time (t | 10-07-2010 |
20110074615 | WIDEBAND DIGITAL TO ANALOG CONVERTER WITH BUILT-IN LOAD ATTENUATOR - A circuit for digital-to-analog conversion is described. The circuit includes a digital-to-analog converter (DAC). The DAC includes a double cascaded current source and a differential current-mode switch (DCMS). The circuit further includes a direct current (DC) offset stage. The circuit also includes a load attenuator. The double cascaded current source may be between the DCMS and a rail voltage. | 03-31-2011 |
20120161837 | NON-OVERLAPPING CLOCK GENERATION - Techniques for generating precise non-overlap time and clock phase delay time across a desired frequency range are provided. A non-overlapping clock generation circuit comprises a delay lock loop (DLL) circuit that generates a control voltage to a clock generator circuit coupled thereto. The control voltage operates to maintain precise timing relationship of non-overlapping delayed clock signals generated by the clock generator circuit. In one aspect, the DLL circuit receives an input clock with a known duty cycle and derives an output control voltage to fix the unit delay to a certain portion of the input clock cycle. The clock generator circuit may also include voltage-controlled delay cells that generate sets of clock signals delayed from one another by a non-overlapping time (t | 06-28-2012 |
20140240152 | CALIBRATION SYSTEMS AND METHODS FOR DIGITAL-TO-ANALOG CONVERTER - Circuits, methods, non-transitory storage media can be configured to reduce calibration errors in a signal converter. A digital-to-analog converter can include a calibration circuit configured to calibrate a digital-to-analog converter (DAC) bit element using a residual error from a previously calibrated digital-to-analog converter (DAC) bit element. The residual error can be stored in memory. | 08-28-2014 |
20140266830 | TECHNIQUES TO REDUCE HARMONIC DISTORTIONS OF IMPEDANCE ATTENUATORS FOR LOW-POWER WIDEBAND HIGH-RESOLUTION DACS - A digital-to-analog converter (DAC) includes, in part, a multitude of input stages that supply currents to a pair of current summing nodes in response to a digital signal, and an impedance attenuator coupled between the current summing nodes and the output of the DAC. The impedance attenuator is adapted, among other function, to increase the range of impedances of the output load, to account for changes in the output load impedance due to variations in the process, voltage and temperature, and to decouple the impedances seen by the summing nodes from the load impedance. The impedance attenuator further includes a differential-input, differential-output amplifier with programmable common-mode gain bandwidth to control the harmonic distortion of the amplifier. The impedance attenuator optionally includes a pair of cross-coupled capacitors to control the harmonic distortion of the amplifier. | 09-18-2014 |
Patent application number | Description | Published |
20100232488 | ADAPTIVE TRACKING STEPS FOR TIME AND FREQUENCY TRACKING LOOPS - A wireless communications method is provided. The method includes analyzing one or more channel conditions from a wireless communication and automatically adjusting a frequency tracking loop gain or a time tracking loop gain in view of the channel conditions. | 09-16-2010 |
20110044188 | TIMING ADJUSTMENTS IN A COMMUNICATION SYSTEM - Methods, systems, apparatus and computer program products are provided to improve synchronization of information units communicated in a wireless communication system. Timing misalignment in the transmission of adjacent information units can produce gaps or overlaps in the transmitted information. In a long-term evolution (LTE) wireless communication system, such gaps and overlaps can be eliminated or reduced by adjusting the lengths of a cyclic prefix portion of one or more transmitted symbols. This Abstract is provided for the sole purpose of complying with the Abstract requirement rules that allow a reader to quickly ascertain the disclosed subject matter. Therefore, it is to be understood that it should not be used to interpret or limit the scope or the meaning of the claims. | 02-24-2011 |
20110176619 | RETRANSMISSION GRANT HANDLING IN A WIRELESS COMMUNICATIONS SYSTEM - A method, an apparatus, and a computer program product for wireless communication are provided that may help account for scenarios in which a transport block size (TBS) for a retransmission may be determined based on a first grant, while a number of resource blocks (RBs) assigned for the retransmission may be determined from a second grant. | 07-21-2011 |
20140029582 | METHOD AND APPARATUS FOR A POWER CONTROL MECHANISM - A user equipment (UE) may reduce the difference in transmit power between the uplink channel and enhanced high speed channel so that the base station may decode the uplink channel. The UE may determine the transmit power level for the uplink channel, such as dedicated physical channel, and the transmit power level for the enhanced high speed channel, such as shared information channel, and reduce the power difference when the power difference is greater than a threshold. The power difference may be reduced by increasing or decreasing the power of the enhanced high speed channel and/or increasing or decreasing the power of the uplink channel. | 01-30-2014 |
20140161104 | DYNAMIC HYSTERESIS SELECTION - A method of wireless communication includes determining an operating parameter of a mobile device. The method also includes dynamically setting a hysteresis for a gain state of a power amplifier (PA) based at least in part on the determined operating parameter. The hysteresis may include a power level hysteresis and a temporal hysteresis | 06-12-2014 |
20140313953 | ADJUSTING MEASUREMENT REPORTS TO REDUCE POWER CONSUMPTION - A UE may improve power performance by adjusting measurement reports based on uplink power. The UE factors in the uplink transmit power into the downlink radio signal strength measurement results that are reported to a network. When the UE is transmitting higher than normal uplink power, the UE can adjust the measurement results and report an artificially lower measurement result to the network, to account for the uplink transmit power. The UE may trigger a handover based at least in part on the adjusted measurement report. | 10-23-2014 |
Patent application number | Description | Published |
20110060947 | HARDWARE TRUST ANCHOR - A target computing environment is secured by a hardware trust anchor that provides a trust state of the target computing environment based upon a security audit of the target computing environment. And diagnosing the target computing environment can be diagnosed by the hardware trust anchor according to the security diagnostic information. | 03-10-2011 |
20110162076 | DATA PROTECTING DEVICE - An event condition is checked, using a computer and data content of the computer is additionally protected in relation to a normal data protection according to the event condition. The event condition is detecting by the computer a remote command and/or detecting a state according to a policy. | 06-30-2011 |
20110238837 | Method and System for Providing Services - Methods and systems for providing services and/or computing resources are provided. A method may include receiving an application from an application provider. The method may further include receiving data from a data provider. The method may also include receiving a first request from the data provider to execute the application and apply the data as input to the application. Additionally, the method may include executing the application in response to receiving the first request. The method may also include storing output data resulting from execution of the application. The method may further include receiving a second request from the data provider to transmit the output data to the data provider. The method may additionally include communicating the output data to the data provider in response to the second request. | 09-29-2011 |
20110314549 | METHOD AND APPARATUS FOR PERIODIC CONTEXT-AWARE AUTHENTICATION - A method for authenticating access to an electronic document. The method includes identifying a context event associated with a user seeking access to the electronic document, receiving from the user a plurality of context data, and analyzing the plurality of context data to generate a one or more derived context data. The method may also include receiving from an authentication module a context request, and in response to the context request, generating a context report, wherein the context report includes at least the one or more derived context data, and is configured to enable the authentication module to authenticate the user's access to the electronic document using a first authentication mechanism. The method may also include communicating the context report to the authentication module, monitoring the user to identify an occurrence of the context event, and upon identifying the occurrence of the context event, generating a context event flag, the context event flag configured to inform the authentication module to reauthenticate the user's access to the electronic document. | 12-22-2011 |
20110314558 | METHOD AND APPARATUS FOR CONTEXT-AWARE AUTHENTICATION - A method for authenticating access to an electronic document. The method includes receiving an authentication request from a user, receiving an aggregate risk score, selecting an authentication mechanism based at least on the aggregate risk score, and applying the authentication mechanism to decide the authentication request from the user. The aggregate risk score may be based at least on a comparison of the user's past behavior with a plurality of context data associated with the user. | 12-22-2011 |
20120260113 | Changing Device Behavior Based on External Information - A first electronic device comprises an information-filtering module configured to identify one or more second electronic devices that supply one or more types of information needed by the first electronic device; an information-gathering module coupled to the information-filtering module configured to collect information from the second electronic devices; and an operation module coupled to the information-gathering module configured to adjust operational behavior of the first electronic device based on the collected information. | 10-11-2012 |
20120265357 | Measure Energy Consumption and Determine Energy-Consumption Patterns for Electricity-Consuming Devices - In one embodiment, one or more electronic devices access energy-consumption data at each of a plurality of electricity-consuming devices, the energy-consumption data at each of the electricity-consuming devices indicating for each of a plurality of past pre-determined time periods an aggregate energy usage by the electricity-consuming device over the past pre-determined time period, an energy-measurement unit at the electricity-consuming device having measured and recorded the aggregate energy usage by the electricity-consuming device for each of the past pre-determined time periods for later access, each of the energy-measurement units having a substantially unique identifier (ID), each of the electricity-consuming devices having its own one of the energy-measurement units; and based on the energy-consumption data, determine one or more energy-consumption patterns across the electricity-consuming devices over at least the past pre-determined time periods. | 10-18-2012 |
20120311574 | SYSTEM AND METHOD FOR PROVIDING EVIDENCE OF THE PHYSICAL PRESENCE OF VIRTUAL MACHINES - In accordance with some embodiments of the present disclosure a method for providing evidence of a physical location of a virtual machine comprises launching, by an information technology (IT) resource, a virtual machine from a virtual machine image. The method further comprises generating, by the IT resource, a chain entry in a physical presence chain of the virtual machine image, the chain entry including an identifier of the IT resource indicating that the IT resource launched the virtual machine. | 12-06-2012 |
20120311575 | SYSTEM AND METHOD FOR ENFORCING POLICIES FOR VIRTUAL MACHINES - In accordance with some embodiments of the present disclosure, a method for enforcing a policy associated with a user of a cloud computing service comprises determining a policy associated with a user of a cloud computing service. The method further comprises determining whether an information technology (IT) resource complies with the policy. The method additionally comprises determining that the IT resource is to launch a virtual machine to perform a computing service requested by the user if the IT resource complies with the policy. | 12-06-2012 |
20130055228 | System and Method for Installing a Patch on a Computing System - According to one embodiment, a system includes a memory and a processor. The processor receives a message that includes a patch for installation and one or more requirements to be satisfied before the patch can be installed. The patch is configured to update the computing system. The processor also repeatedly collects information from one or more sensors until it is determined, based on the collected information, that the one or more requirements have been satisfied. Upon determining that the one or more requirements have been satisfied, the processor further conducts an installation process of the patch on the computing system. Upon determining that the installation process of the patch is finished, the processor further transmits a confirmation report indicating whether the patch was successfully installed. The confirmation report is generated and signed by a unique element associated with the computing system. | 02-28-2013 |
20130064365 | Data Destruction - In one embodiment, receive a first request in connection with accessing a set of encrypted data, wherein the set of encrypted data has an expiration date; the first request comprises a first key associated with the expiration date; and the set of encrypted data has been encrypted using the first key. Validate the first key by comparing the expiration date against a current time. Generate a second key for decrypting the set of encrypted data using the first key only if the expiration date has not passed. | 03-14-2013 |
20130179669 | TRUSTED NETWORK BOOTING SYSTEM AND METHOD - A system for trusted network booting of a server. The system may include a booting server that may contain a booting image and a network server that may boot with the booting image from the booting server. The network server may include a trust anchor that measures the booting image. The system may further include a network controller that controls access to a network. The network controller may verify the measurement of the booting image before allowing the network server to access the network. | 07-11-2013 |
20130191643 | ESTABLISHING A CHAIN OF TRUST WITHIN A VIRTUAL MACHINE - According to an aspect of an embodiment, a method of establishing a chain of trust into a virtual machine on a hardware system is described. The method may include measuring an immutable portion of a virtual machine image configured to instantiate as the virtual machine to generate a trust anchor measurement. The method may also include storing the trust anchor measurement in a sealed memory. | 07-25-2013 |
20130262265 | System and Method for Managing Software Licenses - A method for managing software licenses in a cloud environment includes receiving, by a license services system associated with the cloud environment, a request to use a first application from a first user associated with a first subscribing entity, and receiving, by the license services system, a request to use a second application from a second user associated with a second subscribing entity. The method also includes permitting, by the license services system, the first user to execute the first application if a license for the first application is available to the first subscribing entity, and permitting, by the license service system, the second user to execute the second application if a license for the second application is available to the second subscribing entity. | 10-03-2013 |
20140188977 | APPRATUS, METHOD FOR DEPLOYING APPLICATIONS IN A VIRTUAL DESKTOP INTERFACE SYSTEM - In a VDI session, an application is dynamically deployed in a host server or a client device to achieve improved performance. The host server establishes a VDI session with the client device and executes an application in response to a request from the client device. The host server determines, based on a set of performance parameters associated with the VDI session, that the client device is to take over the execution of the application. Execution of the application is then suspended, and state data of the application is collected when the application is suspended. Thereafter, the host server sends an instruction and the state data to the client device to instruct the client device to resume execution of the application from a state defined by the state data. | 07-03-2014 |
20150088826 | Enhanced Performance for Data Duplication - Systems, methods, computer program products, and apparatuses for enhancing the performance of data duplication are provided. A storage system receives an object, which requires data duplication for increased resiliency. A requisite number of copies of the object are created based on a minimum number defined by a system policy. The storage system stores the object and the requisite number of copies and monitors one or more events in the storage system against predetermined data duplication criteria. The predetermined data duplication criteria are defined within the system policy as criteria for making additional copies of the object over the minimum number. One or more additional copies over the requisite number are created and stored based on the occurrence of the one or more events. | 03-26-2015 |