Patent application number | Description | Published |
20090238517 | Monolithically integrated optical devices with amorphous silicon arrayed waveguidi gratings and INGaAsP gain - An optical waveguide assembly and method of forming the same is described. The optical waveguide assembly includes a waveguide, an amorphous silicon arrayed waveguide grating communicative with the waveguide, and an integrated amorphous silicon waveguide grating laser which communicatively outputs a laser output responsive to the amorphous silicon arrayed waveguide grating. The method includes providing a waveguide, providing an amorphous silicon arrayed waveguide grating communicative with the waveguide, and providing an integrated amorphous silicon waveguide grating laser which communicatively outputs a laser output responsive to the amorphous silicon arrayed waveguide grating. | 09-24-2009 |
20100080954 | Process for formation of highly uniform arrays of nano-holes and nano-pillars - A photolithography method of patterning photoresist involves disposing a two-dimensional array of focusing particles of spherical or other shape on the photoresist and illuminating the particles on the photoresist to generate deep, sub-wavelength patterns on the photoresist. When developed, a positive photoresist layer generates a two-dimensional array of micro- or nano-holes on the developed photoresist. When developed, a negative photoresist layer generates a two-dimensional array of micro- or nano-pillars on the developed photoresist. | 04-01-2010 |
20100123120 | A SINGLE-PHOTON DETECTOR WITH A QUANTUM DOT AND A NANO-INJECTOR - A semiconductor photodetector for photon detection without the use of avalanche multiplication, and capable of operating at low bias voltage and without excess noise. In one embodiment, the photodetector comprises a plurality of InP/AlInGaAs/AlGaAsSb layers, capable of spatially separating the electron and the hole of an photo-generated electron-hole pair in one layer, transporting one of the electron and the hole of the photo-generated electron-hole pair into another layer, focalizing it into a desired volume and trapping it therein, the desired volume having a dimension in a scale of nanometers to reduce its capacitance and increase the change of potential for a trapped carrier, and a nano-injector, capable of injecting carriers into the plurality of InP/AlInGaAs/AlGaAsSb layers, where the carrier transit time in the nano-injector is much shorter than the carrier recombination time therein, thereby causing a very large carrier recycling effect. | 05-20-2010 |
20130341594 | SINGLE-PHOTON NANO-INJECTION DETECTORS - Single-photon detectors, arrays of single-photon detectors, methods of using the single-photon detectors and methods of fabricating the single-photon detectors are provided. The single-photon detectors combine the efficiency of a large absorbing volume with the sensitivity of nanometer-scale carrier injectors, called “nanoinjectors”. The photon detectors are able to achieve single-photon counting with extremely high quantum efficiency, low dark count rates, and high bandwidths. | 12-26-2013 |
20140264025 | SYSTEMS, APPARATUSES AND METHODS FOR CONVERTING LIGHT WAVELENGTHS - In one aspect, an apparatus for converting light having a first wavelength to a light having a second wavelength is provided. The apparatus includes an interband light detector configured to detect light with the first wavelength, a light emitting device configured to emit light with the second wavelength, and a connector connecting the light detector to the light emitting device. In another aspect, an apparatus includes an absorber layer configured to absorb light having a first wavelength, a barrier and trap layer adjacent the absorber layer, an injector layer adjacent the barrier and trap layer, and an emitting device configured to emit light having a second wavelength. In a further aspect, a method is provided and includes absorbing an input light having a first wavelength, converting the first wavelength to a second wavelength different in size than the first wavelength, and emitting an output light having the second wavelength. | 09-18-2014 |
20140268371 | Apparatuses and Methods to Image Surfaces with Small Spot-Size and Large Field of View - Apparatuses and methods to image a flat surface with a spot-size that is about less than or equal to the wavelength of an incident planar electromagnetic wave, and with large field of view, are disclosed herein. More specifically, the apparatuses and methods disclosed herein utilize two hemispheres comprised of one or more dielectric materials to produce the Fourier transform of an incident planar electromagnetic wave onto a flat surface located in a projection plane. | 09-18-2014 |
20150287870 | SINGLE-PHOTON NANO-INJECTION DETECTORS - Single-photon detectors, arrays of single-photon detectors, methods of using the single-photon detectors and methods of fabricating the single-photon detectors are provided. The single-photon detectors combine the efficiency of a large absorbing volume with the sensitivity of nanometer-scale carrier injectors, called “nanoinjectors”. The photon detectors are able to achieve single-photon counting with extremely high quantum efficiency, low dark count rates, and high bandwidths. | 10-08-2015 |
Patent application number | Description | Published |
20110280144 | REDUCING IDLE MODE POWER CONSUMPTION FOR MONITORING NEIGHBORING BASE STATIONS - A method for reducing idle mode power consumption is disclosed. An idle mode is entered. A neighboring base station is selected. If the selected neighboring base station is assigned a high-frequency monitoring mode, a signal strength of the neighboring base station is measured. A low-frequency monitoring mode is assigned to the selected neighboring base station if the signal strength of the selected neighboring base station has been below a power threshold for longer than a time threshold. Other aspects, embodiments, and features are also claimed and described. | 11-17-2011 |
20130210421 | APPARATUS AND METHODS OF COMMUNICATING OVER MULTIPLE SUBSCRIPTIONS - The described aspects include a user equipment (UE) apparatus and corresponding method of communicating with multiple networks using multiple subscriptions. The UE can establish a call in a first network related to a first subscription over a transceiver. During the call, the UE autonomously tunes the transceiver to a frequency of a second network related to a second subscription within a defined gap during the call. The UE can monitor one or more channels in the second network during the defined gap for one or more idle-mode signals. | 08-15-2013 |
20130322234 | METHODS AND DEVICES FOR OPTIMIZED CELL ACQUISITIONS - Access terminals are adapted to blacklist one or more neighboring cells from acquisition attempts. For instance, an access terminal may receive a transmission including a list of neighboring cells to be monitored while connected to a particular serving cell. The access terminal may determine that a predefined number of consecutive acquisition attempts with a particular neighboring cell have failed. In response to failure of the predefined number of consecutive acquisition attempts, the access terminal can blacklist the neighboring cell from subsequent acquisition attempts for a predefined blacklisting period. Following the duration of the blacklisting period, the access terminal may conduct a subsequent acquisition attempt with the neighboring cell. Other aspects, embodiments, and features are also claimed and described. | 12-05-2013 |
20130322328 | METHODS AND DEVICES FOR OPTIMIZING CELL RE ACQUISITIONS - Access terminals are adapted to employ timing information for a Synchronization Channel (SCH) associated with a neighboring base station during a re-acquisition procedure after such timing information has been determined to be inaccurate, or potentially inaccurate. For instance, an access terminal can obtain timing information for a Synchronization Channel (SCH) associated with a neighboring base station, such as by means of a combined acquisition procedure. The access terminal may subsequently determine that the obtained timing information is, or appears to be, no longer synchronized with the base station. In response to such a determination, the access terminal can employ the obtained timing information to time the opening of a receive window for re-acquiring the base station. Other aspects, embodiments, and features are also claimed and described. | 12-05-2013 |
20140355418 | METHODS AND DEVICES FOR OPTIMIZED CELL ACQUISITIONS - Access terminals are adapted to blacklist one or more neighboring cells from acquisition attempts. For instance, an access terminal may receive a transmission including a list of neighboring cells to be monitored while connected to a particular serving cell. The access terminal may determine that a predefined number of consecutive acquisition attempts with a particular neighboring cell have failed. In response to failure of the predefined number of consecutive acquisition attempts, the access terminal can blacklist the neighboring cell from subsequent acquisition attempts for a predefined blacklisting period. Following the duration of the blacklisting period, the access terminal may conduct a subsequent acquisition attempt with the neighboring cell. Other aspects, embodiments, and features are also claimed and described. | 12-04-2014 |
20150038154 | Fair Instantaneous Conflict Resolution Among N Periodic Contenders - The various embodiments include methods for managing how a multi-SIM-multi-standby (MSMS) communication device that is accessing an arbitrary combination of multiple telephony networks processes paging collisions. The embodiment methods promote the control of the paging block rates for two or more subscriptions, in which a subscription's paging block rate is the subscription's number of blocked pages during a certain time multiplied by the subscription's discontinuous reception cycle. In the various embodiments, an MSMS communication device may implement a fair paging conflict resolution algorithm to keep each subscription's paging block rate approximately equal over time. | 02-05-2015 |
20150063431 | DIGITAL ANTENNA SWITCHING - Systems and methods for antenna switching without using a radio-frequency switch are provided. A signal received via a first antenna is digitized to form a first digital received signal. A signal received via a second antenna is digitized to form a second digital received signal. A switch selects the first digital received signal or the second digital received signal to be supplied to a modem to be demodulated. The switch may also supply a digital transmit signal from the modem to be supplied to digital-to-analog converters to and then transmitted using the first or second antenna. Additionally, when the modem is demodulating the signal received via the first antenna, another modem may be demodulating the signal received via the second antenna and vice versa. | 03-05-2015 |
20150065073 | ANTENNA SWITCHING FOR DUAL RADIO DEVICES - Systems and methods for antenna selection in a wireless terminal with two radios are provided. Signals received using first and second antennas are demodulated by first and second modems according to first and second protocols. A receive path between the second antenna and the second modem can be controlled to receive signals according to the first protocol. A performance measure of demodulating, according to the first protocol, a signal received using the second antenna is determined. The performance measure may be determined using a mirror module in the second modem or using a search module in the first modem. The wireless terminal switches antennas so that the first modem demodulates a signal received using the second antenna, if the performance measure for using the second antenna is such that the switch would improve performance of the first modem. | 03-05-2015 |
20150365834 | SYSTEMS AND METHODS FOR ENHANCED CELL SELECTION AND CELL RE-SELECTION - A method for cell selection or cell re-selection by a wireless communication device in a Global System for Mobile Communications (GSM) network is described. The method includes obtaining signal-to-noise ratios (SNRs) associated with multiple cells. The method also includes delaying a camping decision until a broadcast control channel (BCCH) of a strong SNR cell is decoded. The SNR of the strong SNR cell is greater than the SNR of a high received signal strength indication (RSSI) cell. The method further includes camping on the strong SNR cell. | 12-17-2015 |
Patent application number | Description | Published |
20080298444 | Dsl System - Methods, techniques, computer program products, apparatus, devices, etc., used in connection with DSL Management Interfaces, significantly improve the management capabilities of a DSL network and/or improve testing relating to DSL equipment and services by permitting better control and operation of a DSL system, including implementation of timestamping for more accurate measurement, monitoring and control of a system. Timestamping further allows customized data collection techniques, where a DSL line can be measured or monitored at intervals whose frequency depends on the line's stability. Moreover, data parameter read and control parameter write operations are presented in conjunction with the use of timestamping. Also, control and operation of a DSL system is enhanced by implementing bit-loading that minimizes, eliminates or otherwise mitigates the amount by which the SNR margin per tone exceeds a maximum SNR margin quantity, where such bit-loading can be selected through an appropriate interface. | 12-04-2008 |
20110299579 | DSL SYSTEM - Methods, techniques, computer program products, apparatus, devices, etc., used in connection with DSL Management Interfaces, significantly improve the management capabilities of a DSL network and/or improve testing relating to DSL equipment and services by permitting better control and operation of a DSL system, including implementation of timestamping for more accurate measurement, monitoring and control of a system. Timestamping further allows customized data collection techniques, where a DSL line can be measured or monitored at intervals whose frequency depends on the line's stability. Moreover, data parameter read and control parameter write operations are presented in conjunction with the use of timestamping. Also, control and operation of a DSL system is enhanced by implementing bit-loading that minimizes, eliminates or otherwise mitigates the amount by which the SNR margin per tone exceeds a maximum SNR margin quantity, where such bit-loading can be selected through an appropriate interface. | 12-08-2011 |
20130022178 | DETECTION OF WIRING DEFECTS - A method for detecting a defect in wiring in a DSL system. The method includes collecting data including instantaneous values, a history of values, and/or parameters relating to a central office or customer premises equipment, analyzing a line for a wiring defect based on the collected data, and reporting whether or not a wiring defect was detected responsive to the analyzing step. | 01-24-2013 |
20140098705 | MANAGEMENT CENTER FOR COMMUNICATION SYSTEM CUSTOMER PREMISES EQUIPMENT - Described are systems and methods for a Digital Subscriber Line (DSL) customer premises equipment (CPE) Management Center (CMC). In one embodiment, the CMC includes a communications interface to receive information from the CPE device regarding operation of the CPE device. The received information is analyzed and a command signal generation module generates a corresponding command signal for transmission to the at least one CPE device to modify the CPE device operation based on the analysis results in a manner which either enhances CPE device performance, for example increasing data rate, or improves line stability, for example reducing CPE error rate. | 04-10-2014 |
20150043720 | APPARATUS, SYSTEMS AND METHODS OF COMMON-MODE REJECTION RATIO BASED DIAGNOSTICS - In accordance with embodiments disclosed herein, there are provided apparatus, systems and methods for detecting a boundary condition via common mode diagnostics; and to apparatus, systems and methods for detecting a fault condition via common-mode rejection ratio diagnostics. For example, in one embodiment such means include, means for injecting differential mode signal probes onto two conductors of a Digital Subscriber Line (DSL line); means for measuring a common-mode rejection ratio (CMRR) of the differential mode signal probes; means for measuring impedance of the differential mode signal probes; and means for identifying which of an asymmetric fault condition or a symmetric fault condition is present on the line based on both: (a) the measured CMRR of the differential mode signal probes and (b) the measured impedance of the differential mode signal probes. | 02-12-2015 |
20150071336 | SYSTEM FOR DIAGNOSING AND OPTIMIZING VECTORED DSL LINES - In accordance with embodiments disclosed herein, there are provided methods, systems, mechanisms, techniques, and apparatuses for diagnosing and optimizing vectored DSL lines. For example, in one embodiment, such a system includes an interface to a first subset of a plurality of digital communication lines allocated to a vectored group and to a second subset of the plurality of digital communication lines which operate external to the vectored group; a Dynamic Spectral Management server (DSM server) to analyze the vectored group by performing the following operations for each of the plurality of digital communication lines in the vectored group: measuring a mitigated noise level for the digital communication line with crosstalk cancellation active, measuring a non-mitigated noise level for the digital communication line with crosstalk cancellation inactive, and comparing the mitigated noise level measured on the digital communication line with the non-mitigated noise level measured on the digital communication line. In such an embodiment, the DSM server of the system further issues optimization instructions based on the analysis. For example, by issuing optimization instructions for the vectored group, for lines external to the vectored group, or for both. | 03-12-2015 |
20150085995 | SELT AND DELT BASED DIAGNOSTIC METHODS & SYSTEMS FOR TWISTED PAIR TELEPHONE LINES - Methods and systems to improve accuracy and fault detection capability of automated line diagnostics through at least one of: joint processing of SELT and DELT data; comparisons of relative strengths of peaks and/or dips to envelope and/or peaks to dips in a time domain echo response; and iterative diagnostics whereby an echo response is adjusted through signal processing techniques, for example to remove lengths of straight line, between successive performance of a detection algorithm. More than one of the diagnostic systems and methods described herein may be employed in combination to improve accuracy and fault detection capability. For example, where SELT and DELT data are jointly processed, analysis of the SELT data may employ the ratio tests described in the context of a SELT diagnostic routine. Similarly, the SELT diagnostics method assessing relative strengths of peaks and dip in an echo response via ratio tests may be combined with iterative adjustment of the echo response. | 03-26-2015 |
20150085996 | DIAGNOSTIC METHODS FOR TWISTED PAIR TELEPHONE LINES BASED ON LINE DATA DISTRIBUTION ANALYSIS - Methods and systems for twisted pair telephone line diagnostics based on patterns of line data occurring over time. An observed data distribution is classified as periodic or based on modeled distributions previously determined to correspond to a known line activity, fault type, or fault location. A disruption or parameter value pattern is classified through statistical inference of operational and performance data collected from the line. Where the disruption and/or parameter value(s) correlate with a time the customer is at the customer premises, an inference is made that the line fault causing the disruption is more likely at the CPE than at the Central Office. Where the disruption distribution is classified as being a result of human activities initiated on the line, a fault condition associated with the activity is inferred. Where a disruption pattern is correlated with human initiated plain old telephone service (POTS), a micro-filter problem is inferred for the line. | 03-26-2015 |
20150163349 | SELT BASED DIAGNOSTIC METHODS & SYSTEMS FOR TWISTED PAIR TELEPHONE LINES - Methods and systems to improve accuracy and fault detection capability of automated line diagnostics through at least one of: joint processing of SELT and DELT data; comparisons of relative strengths of peaks and/or dips to envelope and/or peaks to dips in a time domain echo response; and iterative diagnostics whereby an echo response is adjusted through signal processing techniques, for example to remove lengths of straight line, between successive performance of a detection algorithm. More than one of the diagnostic systems and methods described herein may be employed in combination to improve accuracy and fault detection capability. For example, where SELT and DELT data are jointly processed, analysis of the SELT data may employ the ratio tests described in the context of a SELT diagnostic routine. Similarly, the SELT diagnostics method assessing relative strengths of peaks and dip in an echo response via ratio tests may be combined with iterative adjustment of the echo response. | 06-11-2015 |
20150222486 | DSL SYSTEM - Methods, techniques, computer program products, apparatus, devices, etc., used in connection with DSL Management Interfaces, significantly improve the management capabilities of a DSL network and/or improve testing relating to DSL equipment and services by permitting better control and operation of a DSL system, including implementation of timestamping for more accurate measurement, monitoring and control of a system. Timestamping further allows customized data collection techniques, where a DSL line can be measured or monitored at intervals whose frequency depends on the line's stability. Moreover, data parameter read and control parameter write operations are presented in conjunction with the use of timestamping. Also, control and operation of a DSL system is enhanced by implementing bit-loading that minimizes, eliminates or otherwise mitigates the amount by which the SNR margin per tone exceeds a maximum SNR margin quantity, where such bit-loading can be selected through an appropriate interface. | 08-06-2015 |
20150288811 | SYSTEM FOR DIAGNOSING AND OPTIMIZING VECTORED DSL LINES - In accordance with embodiments disclosed herein, there are provided methods, systems, mechanisms, techniques, and apparatuses for diagnosing and optimizing vectored DSL lines. For example, in one embodiment, such a system includes an interface to a first subset of a plurality of digital communication lines allocated to a vectored group and to a second subset of the plurality of digital communication lines which operate external to the vectored group; a Dynamic Spectral Management server (DSM server) to analyze the vectored group by performing the following operations for each of the plurality of digital communication lines in the vectored group: measuring a mitigated noise level for the digital communication line with crosstalk cancellation active, measuring a non-mitigated noise level for the digital communication line with crosstalk cancellation inactive, and comparing the mitigated noise level measured on the digital communication line with the non-mitigated noise level measured on the digital communication line. In such an embodiment, the DSM server of the system further issues optimization instructions based on the analysis. For example, by issuing optimization instructions for the vectored group, for lines external to the vectored group, or for both. | 10-08-2015 |
20150350417 | DETECTION OF WIRING DEFECTS - A method for detecting a defect in wiring in a DSL system. The method includes collecting data including instantaneous values, a history of values, and/or parameters relating to a central office or customer premises equipment, analyzing a line for a wiring defect based on the collected data, and reporting whether or not a wiring defect was detected responsive to the analyzing step. | 12-03-2015 |
20160028434 | SYSTEMS AND METHODS FOR MANAGING MIXED DEPLOYMENTS OF VECTORED AND NON-VECTORED VDSL - In accordance with embodiments disclosed herein, there are provided methods, systems, mechanisms, techniques, and apparatuses for managing mixed deployments of vectored and non-vectored VDSL. For example, in one embodiment, there are included means for establishing an operational interface to a communications system, in which the communications system includes a plurality of copper telephone lines organized into at feast a vectored group having a first subset of the plurality of copper telephone lines and a second group having a remaining one or more of the copper telephone Hoes which are not part of the vectored group; means for estimating one or more achievable performance targets such as achievable bit rates for each of the vectored group and the second group; means for selecting an operating point for each of the vectored group and the second group based on the estimated achievable performance targets; means for assigning configurable values to approximate the operating point selected for each of the vectored group and the second group; and means for configuring the communications system via the operational interface to adopt the assigned configurable values. Other related embodiments are further disclosed. | 01-28-2016 |
Patent application number | Description | Published |
20100320127 | FLUID PROCESSING - Fluid processing apparatuses and systems are disclosed. In some embodiments the fluid processing apparatuses include a movable enclosure, a plurality of filter housings disposed substantially within the movable enclosure, and a stand disposed within the enclosure. The filter housings are in fluid communication with one another. Each filter housing defines an elongate path and is configured to support a respective filter along the elongate flow path to filter a substantially continuous flow of fluid. The stand supports each filter housing such that the elongate flow path of each filter housing is substantially parallel to a vertical axis, wherein each filter housing is independently rotatable, relative to the stand. | 12-23-2010 |
20110215053 | Fluid Processing - Fluid processing apparatuses and systems are disclosed. In some embodiments the fluid processing apparatuses include a movable enclosure, a plurality of filter housings disposed substantially within the movable enclosure, and a stand disposed within the enclosure. The filter housings are in fluid communication with one another. Each filter housing defines an elongate path and is configured to support a respective filter along the elongate flow path to filter a substantially continuous flow of fluid. The stand supports each filter housing such that the elongate flow path of each filter housing is substantially parallel to a vertical axis, wherein each filter housing is independently rotatable, relative to the stand. | 09-08-2011 |
20120055865 | CLEANING METHOD AND SYSTEM - A method for removing particles or deposits from a surface having particles or deposits thereon. The method involves contacting a surface with a chemical composition sufficient to selectively dissolve and remove at least a portion of the particles or deposits from the surface. The chemical composition is compatible with the surface. This disclosure also relates to a system of specially designed equipment for removing particles or deposits from a surface having particles or deposits thereon. The disclosure is useful, for example, in cleaning porous surfaces, media for cartridge, pleated and membrane surfaces, and internal walls of tanks or filter housings. | 03-08-2012 |
20120145950 | ULTRAPURE COLLOIDAL SILICA FOR USE IN CHEMICAL MECHANICAL POLISHING APPLICATIONS - An ultrapure colloidal silica dispersion comprising colloidal silica particles having a mean or aggregate particle size from about 10 to about 200 nm, wherein the colloidal silica dispersion has less than 200 ppb, of each trace metal impurity disposed therein, excluding potassium and sodium, and have less than 2 ppm residual alcohol. A method for producing and using the same is also disclosed. | 06-14-2012 |
20130067998 | Homogeneous Blending - A method of forming a colloidal dispersion includes providing a first continuous material flow, providing a second continuous material flow, combining the first and second continuous material flows, and moving a continuous flow of a colloidal dispersion in a direction downstream of the first and second continuous flows. The first continuous material flow includes one or more of a diluent (e.g., deionized water), a base, and an acid, and the second continuous material flow includes an abrasive particle solution. The first and second material flows are combined with a Reynolds number greater than about 4400 and less than about 25000 (e.g., about 7400 to about 25000). The colloidal dispersion includes the diluent, the base, the acid, and abrasive particles from the abrasive particle solution. | 03-21-2013 |