| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 455232100 |
Gain control
| 145 |
| 455255000 |
Local oscillator frequency control
| 49 |
| 455266000 |
Selectivity or bandwidth control
| 6 |
| 455231000 |
Applied at or for specific intervals or periods of time | 5 |
| 20090215418 | COMMUNICATION UNIT AND METHOD OF OPERATION THEREFOR - A communication unit for a radio communication system comprises a receiver for receiving data over an air interface. The receiver can operate in a first diversity mode and a second diversity mode. The first diversity mode may specifically correspond to no receive diversity being employed and the second diversity mode may correspond to signals from two or more fully or partially de-correlated antennas being combined. The communication unit comprises a data unit which determines a first data characteristic for a section of data to be received over the air interface. A switching unit is arranged to switch between the first diversity mode and the second diversity mode in response to the first data characteristic. The invention may allow improved performance and e.g. reduced power consumption by allowing an improved adaptation of diversity operation. In particular, an improved trade-off between power consumption and performance may be achieved in many embodiments. | 08-27-2009 |
| 20120142297 | RECEIVER - A receiver includes an RF unit, a mixer which converts the output of the RF unit, a signal processing unit which filters the converted signal, a demodulator which demodulates the filtered signal, a level detector which compares a level of one of signals present between an input of the RF unit and an output of the signal processing unit with a threshold, a gain controller which generates a gain control signal based on the comparison result, a gate signal generator, and an interpolator. The receiver is configured such that a gain from the input of the RF unit to the output of the signal processing unit is changed in a stepwise manner. The gate signal generator generates a gate signal in synchronism with the gain change. The interpolator holds or interpolates the output of the demodulator for the time period represented by the gate signal. | 06-07-2012 |
| 20120196553 | POWER MANAGEMENT OF RADIO TRANSCEIVER ELEMENTS - A radio receiver includes a power control module for selectively powering down and powering up radio receiver elements in between known communication periods according to one aspect of the present invention. According to a second aspect of the invention, the radio receiver operates in a low power mode of operation and periodically “sniffs” to determine whether an access point has messages or communication signals to transmit to it. | 08-02-2012 |
| 20090170459 | POWER MANAGEMENT OF RADIO TRANSCEIVER ELEMENTS - A radio receiver includes a power control module for selectively powering down and powering up radio receiver elements in between known communication periods according to one aspect of the present invention. According to a second aspect of the invention, the radio receiver operates in a low power mode of operation and periodically “sniffs” to determine whether an access point has messages or communication signals to transmit to it. | 07-02-2009 |
| 20090275302 | Lower power wake-up device - A circuit for producing a wake-up signal to control powering up an electronic system, has a frequency selective radio frequency (RF) amplifier circuit that amplifies signals within a predetermined frequency range and produces an amplified RF output signal. An RF detector detects the presence of amplified RF output at the output of the amplifier circuit and produces a signal W indicative of the instantaneous presence of the RF output signal. A threshold detector circuit determines if the amplified output signal has reached a predetermined threshold and produces an output signal T. A clock generates a clock signal having clock period in response to the threshold detector output signal T. A data decoder logic circuit turns off the clock in the absence of an RF output signal for a prescribed time period and decodes the RF detector output signal W into a stream of output signals. A serial comparator circuit compares a most recent stream of N output data signals from the data decoder logic circuit with a stored reference pattern, wherein when the most recent stream of N output logic signals from the data decoder logic circuit matches the stored synchronization pattern the serial comparator circuit generates a wake-up signal that enables power to the electronic system. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract. | 11-05-2009 |
| 455254000 |
Sensitivity control | 2 |
| 20100035570 | RECEIVER AND RECEIVING SYSTEM USING THE SAME - If receiving circuit is in a high-sensitivity mode, receiving circuit is switched to a low-sensitivity mode when the BER according to BER measurement circuit becomes more favorable than a release threshold. If receiving circuit is in the low-sensitivity mode, receiving circuit is switched to the high-sensitivity mode when the BER according to BER measurement circuit becomes more adverse than a start-up threshold. If switching between the high-sensitivity and low-sensitivity modes occurs, control is exercised so that switching from the high-sensitivity mode to the low is resistant to occurring, thereby suppressing the occurrence of a reception error caused by switching between the receiving modes. | 02-11-2010 |
| 20100003940 | RADIO SIGNAL RECEIVER DEVICE - A radio signal detector includes first and second detector circuits. The first detector circuit has a higher detection sensitivity to detect a radio signal earlier than the second detector circuit. The second detector circuit has a lower detection sensitivity to detect the radio signal accurately. When the second detector circuit detects the radio signal, it starts up a microcomputer. When the first detector circuit detects the radio signal, a time counter starts to count time. After being started up, the microcomputer acquires a time difference between the radio signal detection by the first detector circuit and the start-up. The microcomputer determines time of radio signal transmission by a radio signal transmitter device based on the determined time difference, and outputs control information after an elapse of a predetermined time. | 01-07-2010 |
| Entries |
| Document | Title | Date |
|---|
| 20090191829 | WIRELESS COMMUNICATING APPARATUS, RECEIVING METHOD SELECTING METHOD, AND RECEIVING METHOD SELECTING PROGRAM - A wireless communicating apparatus is provided which includes two receiving methods, and can determine a favorable receiving method. The wireless communicating apparatus executes, which is provided with the two receiving methods of a first receiving method which is used in a propagation path environment in which it is necessary to reduce the multi-path interference, and a second receiving method which is used in the propagation path environment in which it is not necessary to reduce the multi-path interference, a first determination (step S | 07-30-2009 |
| 20130065546 | Reducing Power Consumption Of A Filter - In one embodiment, the present invention includes a system that having a low noise amplifier (LNA) to receive and amplify a radio frequency (RF) signal, a mixer to receive and downconvert the RF signal to a second frequency signal, a filter to receive and filter the second frequency signal, a demodulator to receive and demodulate the filtered second frequency signal to output demodulated data, and a quality detector to detect a quality of the demodulated data and output a quality indicator based on the data quality. In addition, the system can include a controller coupled to the filter to cause a state of the filter to be stored into a storage responsive to the quality indicator. | 03-14-2013 |
| 20130065547 | CROSS-POLARIZATION INTERFERENCE COMPENSATION APPARATUS, CROSS-POLARIZATION INTERFERENCE COMPENSATION METHOD, AND PROGRAM - Even when transmitters of both polarizations in an opposing station apparatus output different signals, cross-polarization interference is compensated for. A cross-polarization interference compensation apparatus includes a main signal reception unit which receives a signal having a first polarization direction, an interference signal reception unit which receives a signal having a second polarization direction crossing the first polarization direction, a phase control unit which controls a phase of the signal received by the interference signal reception unit, an interference compensation signal generation unit which generates an interference compensation signal by performing weighted combination on a time series of a signal output by the phase control unit, and setting weighting coefficients used for the weighted combination so that the interference compensation signal becomes a cross-polarization interference component of the signal received by the main signal reception unit, a phase estimation unit which estimates a phase difference between the signal received by the main signal reception unit and the signal received by the interference signal reception unit using information on the weighting coefficients, and a compensation unit which compensates the signal having the first polarization direction for cross-polarization interference caused by the signal having the second polarization direction using the interference compensation signal and the signal received by the main signal reception unit, in which the phase control unit controls the phase of the signal received by the interference signal reception unit using the phase difference estimated by the phase estimation unit so that a phase of the signal received by the main signal reception unit and the phase of the signal received by the interference signal reception unit become identical. | 03-14-2013 |
| 20110039508 | Power Management Techniques for Buffering and Playback of Audio Broadcast Data - Various techniques that relate to prolonging the battery life on a portable electronic device during the buffering and playback of audio broadcast data are provided. In accordance with disclosed embodiments, upon detecting a low power state, the device may implement one or more low power actions, including starting, continuing, or stopping one or more audio broadcast functions, such as buffering or playing back audio broadcast data, to reduce overall power consumption, and thus prolong battery life. In one embodiment, a user may specify one or more low power actions that are to be implemented during a low power state by configuring user settings stored on the device. In another embodiment, the device, upon detecting a low power state, may prompt the user to make a selection from a listing of selectable low power action options and perform the selected low power action. | 02-17-2011 |
| 20120171978 | Methods and Systems for Interference Rejection for Low Signals - A radio device and a method to operate a non-heterodyne receiver are provided. The radio device is configured to receive a signal waveform and to provide a wake-up signal to a second communication circuit when the signal waveform is a valid communication request; wherein the second communication circuit switches from a power saving state to an operating state upon receiving the wake-up signal from the non-heterodyne receiver. The non-heterodyne receiver further including an Electromagnetic interference (EMI) rejection circuit, including a narrow band filter and a broadband filter to reject an EMI signal. A filter circuit for a narrow passband circuit is also provided. The filter including a buffer circuit; a crystal oscillator coupled to the output of the buffer circuit; and an inverting amplifier coupled in parallel to the crystal oscillator. | 07-05-2012 |
| 20090054025 | MOBILE COMMUNICATION TERMINAL AND METHOD FOR CONTROLLING A PLURALITY OF RECEIVING APPARATUSES MOUNTED ON MOBILE COMMUNICATION TERMINAL - Signals are received with a wider power range even through the use of existing AGCs than by conventional mobile communication terminals. In an AGC on one antenna side, in order to enable reception of a signal at a higher level, a target TA of a dynamic range DA of this AGC is changed to a value 5 dB higher than a value defined as a standard TS. On the other hand, in an AGC on another antenna side, in order to enable reception of a signal at a lower level, a target TB of a dynamic range DB of this AGC is changed to a value 5 dB lower than the value defined as the standard TS. | 02-26-2009 |
| 20090149145 | Wireless terminal - A wireless terminal has a diversity function and includes a plurality of receiving branches. Receiving units are provided for the plurality of receiving branches, respectively. The receiving units can receive radio signals of a plurality of frequencies. A controller controls in a gap zone in a compressed mode such that the receiving units are allowed to receive radio signals of different frequencies. | 06-11-2009 |
| 20080293369 | SIGNAL PROCESSING DEVICE AND SIGNAL PROCESSING METHOD - A signal processing device and signal processing method is provided that includes a detection unit for detecting a signal strength of a signal, whereby the detection unit is configured to output a detection value that represents the signal strength of the signal; a settable digital filter connected upstream of the detection unit, whereby filter coefficients for setting a transfer characteristic of the filter are assigned to an amplification or attenuation of the signal by the filter; a digital multiplication unit, which is connected upstream of the detection unit for amplification or attenuation of the signal, whereby the multiplication unit is configured to compensate partially for the amplification or attenuation of the filter, whereby the compensation is encumbered with a residual error; and a correction unit to apply to the detection value a correction value at least partially compensating for the residual error. | 11-27-2008 |
| 20080268804 | Bias Circuit for Common-Mode and Semiconductor Process Voltage and Temperature Optimization for a Receiver Assembly - A receiver suitable for applications that desire a common-mode voltage range from approximately 0.7V to approximately 0.9V is arranged by coupling first and second differential pair circuit architectures based on first and second current-steering schemes into the same path to generate an output signal. The receiver includes first and second differential pair circuits. The first differential pair circuit is coupled to a first current-steering path via a first port and a second current-steering path via a second port. The second differential pair circuit is coupled to the first current-steering path via a third port and the second current-steering path via a fourth port. A bridge circuit is interposed between the first and second differential pair circuits. The bridge circuit integrates the first and second current-steering paths in a single-stage of the receiver assembly. A bias signal directs the bridge circuit over a set of worst case conditions. | 10-30-2008 |
| 20100159862 | Method and Apparatus for Frequency Control in Wireless Communications - The automatic frequency correction value applied by a receiver is altered to minimize long-term drift of a path delay profile. In one embodiment, the phase or timing error resulting from constant frequency corrections is accumulated, and an estimated frequency correction value is selectively quantized into an actual frequency correction value in response to the accumulated phase/timing error. The quantized value above or below the estimate is selected to minimize the accumulated phase/timing error that gives rise to path delay profile drift. In another embodiment, a timing circuit measures the instantaneous path delay profile drift incurred with each frequency correction, and integrates the instantaneous drift measurements over time to yield a path delay profile drift. The drift (or its rate of change) is then used to adjust a frequency correction value so as to minimize the drift. | 06-24-2010 |
| 20100210232 | CONTROLLING X-WAY RECEIVER DIVERSITY - Method for controlling receiver diversity operation in a base station of a mobile telecommunications network, the base station comprising a first receiver arrangement and a second receiver arrangement, the method comprising: | 08-19-2010 |
| 20120142296 | Methods For Selecting Antennas To Avoid Signal Bus Interference - Electronic devices may have multiple antennas. A first antenna may be located at one end of a device and a second antenna may be located at another end of the device. An input-output port in a device may have a connector that receives a mating connector associated with external equipment. The input-output port and the second antenna may be located at one of the ends of the electronic device. When equipment such as an external video accessory is in use, input-output circuitry in an electronic device may transmit high speed data signals through the input-output port. The presence of activity on the input-output port such as video data or other data transmissions may be monitored by control circuitry in the electronic device. When input-output port activity is detected, use of the second antenna in receiving radio-frequency signals can be inhibited. | 06-07-2012 |
| 20090111412 | Rail-to-rail data receiver for high-speed communication - In one embodiment, the present invention includes a receiver having two complementary input sense amplifiers to receive, amplify and latch a differential signal and to output complementary stage differential output signals to a latch coupled to receive and combine the n− them into a latched differential output signal. Other embodiments are described and claimed. | 04-30-2009 |
| 20090111413 | Processing Signals in a Wireless Communications Environment - Methods are described of processing a signal transmitted over a channel in a wireless communication system. A method includes estimating at intervals at least one parameter of a time varying communication environment of said system. At least one processor-related signal processing criterion can be monitored for implementing a signal processing activity. Based on said at least one parameter and said at least one processor-related criterion, a signal processing function can be selected from a plurality of signal processing functions implementable by a processor. Each signal processing function includes a plurality of code blocks having a sequence of instructions for execution on a processor platform, the processor platform including a set of configurable operators having a plurality of predetermined configurations, each sequence of instructions including at least one configuration instruction, which selects one of the plurality of predefined configurations for executing that code block. Related receivers and software implementations are described. | 04-30-2009 |
| 20100317308 | Area Reduction Techniques for Saw-Less Receivers - Embodiments of a SAW-less RF receiver front-end that includes a frequency translated notch filter (FTNF) are presented. An FTNF includes a passive mixer and a baseband impedance. The baseband impedance includes capacitors that form a low-Q band-stop filter. The passive mixer is configured to translate the baseband impedance to a higher frequency. The translated baseband impedance forms a high-Q notch filter and is presented at the input of the FTNF. The FTNF can be fully integrated in CMOS IC technology (or others, e.g., Bipolar, BiCMOS, and SiGe) and applied in wireless receiver systems including EDGE/GSM, Wideband Code Division Multiple Access (WCDMA), Bluetooth, and wireless LANs (e.g., IEEE 802.11). In addition, embodiments of a multi-band SAW-less RF receiver front-end and techniques to share components of FTNFs included within the multi-band SAW-less RF receiver front-end are presented. | 12-16-2010 |
| 20110053540 | MOBILE STATION - The present invention provides a mobile station which can reduce the power consumption of an operation of intermittent reception in accordance with an elapsed time after transmission or reception. When a mobile station intermittently receives signals from another mobile station after transmission or reception, the interval of intermittent reception is not made constant, but the interval of the intermittent reception is made short immediately after transmission or reception, and as the time passes thereafter, the interval of the intermittent reception is made longer than that immediately after transmission or reception. Further, when the interval of the intermittent reception is made long and becomes a predetermined interval, the interval of the intermittent reception can be maintained at the predetermined interval and made constant thereafter. Accordingly, the interval of a reception timing can be set in accordance with a state after completion of reception or completion of transmission. | 03-03-2011 |
| 20090203340 | RECEIVER FOR RECEIVING AT LEAST TWO TYPES OF SIGNALS, DATA COMMUNICATION SYSTEM AND VEHICLE INCLUDING A RECEIVER - A receiver for receiving different types of signals includes a receiver input for receiving a receiver input signal. A signal converter can convert the receiver input signal into a receiver output signal. A receiver output is connected to a converter output of the signal converter, for outputting the receiver output signal The receiver has a control input via which controllable parameters of the receiver can be controlled. The receiver further includes a memory. The memory has a first memory part in which a first set of receiver control parameters values for the receiver are stored and a second memory part in which a second set of receiver control parameters values for the receiver are stored. The receiver being able to receive a selected type of signals when the receiver is set in accordance to a selected set. A connection is present which connects a selected memory part to the a control input, for setting receiver parameters of said receiver to receiver control parameters values stored in said selected memory part. A switch between the control input and the memory parts, can switch the connection from a selected memory part to another memory part. A controller is connected to the switch, for selecting a set and controlling the switch to switch the connection to a memory part corresponding to the selected set. | 08-13-2009 |
| 20100279640 | CONFIGURING RADIOS - In one aspect, a method includes using a processor to receive a request to configure a first radio having a first type. Using the processor includes using the processor to obtain a first configuration type used to configure the first radio and to configure a first radio using the first configuration type. | 11-04-2010 |
| 20110065402 | Dynamic Radio Data System Options - A broadcast radio event such as a song or a concert promotion, and a plurality of radio data fields corresponding to the event such as RTplus information, are received at a device. A user selects to display broadcast radio options simultaneous with receiving the broadcast radio event. Then is displayed a set of user-selectable options, at least one o which is derived from at least one of the radio data fields. In various embodiments, each time a new set of radio data fields are received, the set of displayed options is updated, with certain provisions to ‘freeze’ the displayed set of options. Examples of a derived option include a link to an Internet page, a phone number or email address, and posting a time and place of an advertised event to a calendar. A method, device, computer program product, and apparatus are detailed. | 03-17-2011 |
| 20120009890 | METHOD AND APPARATUS FOR PROVIDING A GEO-PREDICTIVE STREAMING SERVICE - A method for providing geo-predictive streaming services may include receiving, at a mobile terminal, an indication of network performance parameters associated with a corresponding time and location of a projected route of the mobile terminal, determining, at the mobile terminal, whether a portion of the projected route corresponds to an outage event with respect to data being streamed to the mobile terminal, and, in response to a determination that the outage event corresponds to the portion of the projected route, causing communication of at least one of a geo-predictive next application data unit and an estimated capacity vector to a streaming server to a streaming server providing the data being streamed to cause a modification to a data transmission rate at which data is to be streamed to the mobile terminal. A corresponding computer program product, system and apparatus are also provided. | 01-12-2012 |
| 20120252391 | COMMUNICATIONS DEVICE, RESONANT CIRCUIT, AND METHOD OF APPLYING CONTROL VOLTAGE - A communications device includes a resonant antenna including a variable capacitance element having a dielectric unit formed of a ferroelectric material, and performing non-contact communications with the outside; and a control voltage generation unit generating a control voltage for controlling capacitance of the variable capacitance element, applying the generated control voltage to the dielectric unit of the variable capacitance element, and inverting an application direction of the control voltage applied to the dielectric unit at a predetermined rate. | 10-04-2012 |
| 20120015618 | Method and Apparatus for Controlling Broadcast Receivers - In accordance with an example embodiment of the present invention, an apparatus is described comprising a control interface, a detection unit configured to detect that an external broadcast receiver is coupled on the control interface, a control unit configured to select one of the external broadcast receiver and another broadcast receiver, and a user interface application configured to control the selected broadcast receiver. | 01-19-2012 |
| 20120028595 | Radio Transceiver on a Chip - An entire radio transceiver can be completely integrated into one IC chip. In order to integrate the IF filters on the chip, a heterodyne architecture with a low IF is used. A single, directly modulated VCO is used for both up-conversion during transmission, and down-conversion during reception. Bond-wires are used as resonators in the oscillator tank for the VCO. A TDD scheme is used in the air interface to eliminate cross-talk or leakage. A Gaussian-shaped binary FSK modulation scheme is used to provide a number of other implementation advantages. | 02-02-2012 |
| 20120157028 | APPARATUS AND METHOD FOR PROVIDING INFORMATION IN PORTABLE TERMINAL - Provided is an apparatus and method for providing information in a portable terminal having a display unit and a control unit. The display unit displays an information providing window for information received from a broadcasting station during a radio play mode of the portable terminal. The control unit provides a particular function responsive to the information received from the broadcasting station during the radio play mode of the portable terminal. | 06-21-2012 |
| 20120071126 | Communication Transceiver Having a Three-Line Balun With Power Amplifier Bias - A balun that includes a first conductor, a second conductor, and a third conductor. The first conductor has a first length. The first conductor also has a first end connected to a first balanced power amplifier output port. The second conductor has substantially the same first length. The second conductor also includes a first end connected to a second balanced power amplifier output port and a second end connected to a second end of the first conductor. The third conductor has substantially the same first length. The third conductor has a first end connected to an antenna port and a second end connected to a ground potential. | 03-22-2012 |
| 20120129479 | Method and System for Processing Antenna Feeds Using Separate Processing Pipelines - A method and system for capturing, storing, and streaming over the air broadcasts based on user requests is disclosed. The system and method utilize subarrays of antenna elements for receiving over the air broadcasts. Processing pipelines are used to demodulate, transcode and index the content transmissions to produce content data that are streamed to users. In this way, the feeds from antennas can be accessed by users over a network connection. | 05-24-2012 |
| 20110159832 | ANTENNA DEVICE AND COMMUNICATION DEVICE - An antenna device includes: a substrate; a radiating electrode formed on the substrate, a ground electrode formed on the substrate and disposed opposite the radiating electrode, a feed line as a distributed constant transmission line connected via a feed point to the radiating electrode, at least one impedance matching element for impedance-matching the radiating electrode at a prescribed signal frequency by being connected in parallel with the radiating electrode to the feed line at a position a prescribed distance away from the feed point, and a switch, interposed between the at least one impedance matching element and the feed line, for connecting or disconnecting the at least one impedance matching element to or from the feed line in accordance with a prescribed control signal. | 06-30-2011 |
