Abstract: The present invention is directed to improved speech intelligibility in telephones with multiple microphones. Such a telephone includes a first microphone, a second microphone, a voice activity detector (VAD), a receiver module, and a signal processor. The first microphone outputs a first audio signal, which comprises a voice component when a near-end user talks and a background noise component. The second microphone outputs a second audio signal. The VAD generates a voice activity signal responsive to a ratio between the first audio signal and the second audio signal. The voice activity signal identifies time intervals in which the voice component of the near-end user is present in the first audio signal. The receiver module receives a third audio signal, which comprises a voice component of a far-end user. The signal processor modifies the third audio signal responsive to the voice activity signal.

Abstract: A quad SRAM based one time programmable memory cell is provided. Prior to programming, the memory cell operates as an SRAM memory cell. After programming, the memory cell operates as a one-time programmable non-volatile memory cell. The memory cell includes a storage element coupled at a first side to a first upper fuse and a first lower fuse and coupled at a second side to a second upper fuse and a second lower fuse. When the first upper fuse and second lower fuse are programmed, the storage element outputs a first value. When the second upper fuse and first lower fuse are programmed, the storage element outputs a second value. After programming the upper fuse acts as a pull-up fuse and the lower fuse acts as a pull-down fuse hold the state of the cell.

Abstract: A reduced-complexity maximum-likelihood detector is disclosed that provides a high degree of signal detection accuracy while maintaining high processing speeds. The detector processes the received symbols to obtain initial estimates of the transmitted symbols and then uses the initial estimates to generate a plurality of reduced search sets. The reduced search sets are then used to generate decisions for detecting the transmitted symbols.

Abstract: Certain embodiments of the invention may be found in an single chip satellite set-top box solution that comprises demodulation, decoding and audio/video display functions integrated within a single chip. The single chip solution for the satellite set-top box is adapted to provide demodulation, display, and other related set-top box functions for a system that may be adapted to handle two incoming data streams modulated using an 8 PSK, 8 PSK-turbo or QPSK scheme, for example. Accordingly, the single chip satellite set-top box solution comprise dual 8 PSK/8 PSK-turbo/QPSK demodulators, a MIPS CPU, a 16-bit DDR-SDRAM, graphics display capability for handling two channels, and audio/video decoders and DACs for handling two incoming channels. The single chip satellite set-top box solution may also comprise integrated peripheral support for major set top box functions including a smart card interface, IR receivers, and general purpose input/output (GP/IO) pins.

Abstract: Certain embodiments for antenna geometry for multiple antenna handsets may include receiving RF signals via a patch antenna coupled to a signal processing circuitry within a mobile terminal. The signal processing circuitry may process the RF signals, comprising at least one of a plurality of polarizations that are received by the patch antenna. The patch antenna may be a dual-polarized antenna, and may comprise a plurality of ports. RF signals at a first of the plurality of ports may be orthogonally polarized with respect to RF signals at a second of the plurality of ports. The patch antenna may be optimized to receive multiple RF bands. Each of the multiple RF bands may be communicated via different ports to be processed.

Abstract: Methods and systems for offset compensation using calibration are provided. Embodiments enable offset compensation using non-uniform calibration. Embodiments enable calibration schemes configurable according to the probability distribution function (PDF) of the random offset. Embodiments enable calibration schemes configurable with multiple levels of calibration resolution according to the PDF of the random offset. Embodiments enable calibration schemes configurable with multiple calibration step values according to the PDF of the random offset. Embodiments can be implemented for various types of random offset, including, without limitation, Gaussian-, Bernoulli-, uniformly-, Chi-, exponentially-, Gamma-, and Pareto-distributed offset.

Abstract: Embodiments include a system for performing dispersion compensation on an electromagnetic signal received over a communication channel, the electromagnetic signal bearing information at a symbol rate. An interleaved analog to digital converter (“ADC”) block may be used, wherein the interleaved ADC block may be configured to generate a plurality of digitally sampled signals from the electromagnetic signal. An interleaved equalizer block may be configured to digitally process each of the digitally sampled signals generated by the ADC block to generate a plurality of digitally equalized signals. A multiplexer may be configured to aggregate the digitally equalized signals into a composite output signal.

Abstract: Aspects of a method and system for rate selection algorithm to maximize throughput in closed loop multiple input multiple output (MIMO) wireless local area network (WLAN) system are provided and may comprise computing a maximum number of binary bits to be simultaneously transmitted via an RF channel based on signal quality. A modulation technique may be selected based on the computed maximum, communicating feedback information comprising the selected modulation technique. Subsequently transmitted data may be received via an RF channel which is modulated based on the feedback information. Another aspect of the method may comprise receiving feedback information comprising at least one of a selected modulation technique and coding rate via an RF channel, and transmitting subsequent data via said at least one of a plurality of RF channels which either modulated, or coded, based on the feedback information.

Abstract: Presented herein are systems and methods for integrating secure identification logic into cell phones. A registration is received, wherein said registration includes an identifier identifying a mobile terminal. Information is transmitted to the mobile terminal, wherein a password is a function of the information.

Abstract: A system and method of distributing incentives for wireless hotspots is provided. The method includes providing an access point to a wireless hotspot for wireless devices to wirelessly connect to a larger network in a publicly accessible location, evaluating use statistics of the access point of the wireless hotspot by portable devices, and providing an inducement to a user of the wireless hotspot based on the evaluated use statistics. The system includes a first provider for providing an access point to a wireless hotspot for wireless devices to wirelessly connect to a larger network in a publicly accessible location, an evaluator for evaluating use statistics of the access point of the wireless hotspot by portables devices, and a second provider for providing an inducement to a user of the wireless hotspot based on the evaluated use statistics.

Abstract: Methods and systems for processing television signals are disclosed herein, and may comprise decoding a first analog video signal via an integrated circuit comprising circuitry for decoding and processing digital video signals. A second analog video signal may be simultaneously decoded via the integrated circuit. A first video output corresponding to the decoded first analog video signal and a second video output corresponding to the decoded second analog video signal may be simultaneously generating via the integrated circuit. An out-of-band signal corresponding to the decoded first or second analog video signal may be received via the integrated circuit. The received out-of-band signal may be processed via the integrated circuit. The first analog video signal and the second analog video signal may comprise an NTSC signal, a composite signal, an S-video signal, and/or a component signal. The digital video signals may be decoded via the integrated circuit.

Abstract: A method and apparatus are disclosed, in an interactive broadband set-top box receiving broadband signals from a headend, to facilitate communications with an installed card within the set-top box using a single IC chip that processes the broadband signals. The single IC chip is configured to a PCMCIA PC-card mode such that PC card signals are multiplexed to certain I/O pins of the single IC chip. In the PCMCIA PC-card mode, the single IC chip attempts to detect the presence of and identify an installed card in the set-top box. If an installed card is present and is identified as a POD module, then the single IC chip is reconfigured from the PCMCIA PC-card mode to a POD mode such that POD-compatible signals are multiplexed to certain existing I/O pins of the single IC chip when operating in the POD mode.

Abstract: A Multi-tone transmission system processes input data through a plurality of intermediate processing stages 12, 14, 16 and corresponding stages of intermediate data 18,20. A symbol including a number of tones is obtained therefrom by an inverse Fourier transform 24 and stored in a buffer 158. The peak amplitude that the symbol would contain after the subsequent processing in the analogue front end 146 is modelled and compared with a threshold. If the modelled peak amplitude in the symbol exceeds the threshold, the symbol stored in the buffer 158 is regenerated. The symbols stored in the buffer are output through the analogue front end 146.

Abstract: The present invention finds the optimum organization of compiled code within an application to ensure maximal cache efficiency. A configuration file specifies predefined cache, optimization, and application parameters. The cache parameters include a cache size, cache line size, set associativity, address-to-cache-line mapping algorithm, and set replacement algorithm. The optimization parameters specify the minimum acceptable efficiency level. The application parameters include a list of object modules and functions within those modules. All possible orderings of the modules are stepped through to determine where the specified functions fall within the cache given the location of the function within the module. The function locations in each permutation of the orderings are analyzed to find a solution that matches or beats the optimization parameters.

Abstract: Methods for using communication network statistics in the operation of a real-time communication system are disclosed. Embodiments of the invention may provide improved playback of real-time media streams by incorporating into the algorithms used for playback of the media stream network statistics typically calculated by some transport protocols. An additional aspect of the present invention may include machine-readable storage having stored thereon a computer program having a plurality of code sections executable by a machine for causing the machine to perform the foregoing.

Abstract: A system for calculating DC offset and achieving frame detection is described. In one embodiment, the present invention includes an electronic device with an integrated receiver module. The receiver module can take advantage of a known synchronization pattern such as the Bluetooth access code to determine an initial DC offset and to provide frame detection.

Abstract: Presented herein is a system for storing macroblocks for concatenated frames. A decoder system comprises a frame buffer. The frame buffer comprises one or more rows. A particular one of the rows stores macroblocks from a plurality of frames.

Abstract: Aspects of the invention provide a system and method for communicating in a hybrid wired/wireless local area network. A method for communicating in a hybrid wired/wireless local area network may include communicating at least a first messaging protocol message between a first switch and at least one of a second switch and a first access point. In response to the first messaging protocol message, at least a second messaging protocol (MP) message may be communicated between the second switch, first access point, and/or a second access point. The first switch, second switch, first access point, second access point, and/or one or more access devices may be controlled using the second messaging protocol message and/or the first messaging protocol message.

Abstract: An apparatus and method for allowing two different signal paths to be coupled to a multi-tap transformer balun. The multi-tap transformer has a first port, which is coupled to a single antenna, and two or more differential secondary ports. Each port has one or more taps, which are optimized separately for each of the signal paths, allowing each of the two or more signal paths to operate in different frequency bands. Use of the method of the invention can decrease the number of external components and integrated circuit package pins, and reduce the area required for each signal path on an integrated circuit die, a printed circuit board, or the like.

Abstract: Embodiments include a system for performing dispersion compensation on an electromagnetic signal received over a communication channel, the electromagnetic signal bearing information at a symbol rate. An interleaved analog to digital converter (“ADC”) block may be used, wherein the interleaved ADC block may be configured to generate a plurality of digitally sampled signals from the electromagnetic signal. An interleaved equalizer block may be configured to digitally process each of the digitally sampled signals generated by the ADC block to generate a plurality of digitally equalized signals. A multiplexer may be configured to aggregate the digitally equalized signals into a composite output signal.