Taiyi Cheng - San Jose CA, US Josephus van Engelen - Aliso Viejo CA, US Minsheng Wang - Irvine CA, US
Assignee:
Broadcom Corporation - Irvine CA
International Classification:
H03M 3/00
US Classification:
341143, 341161
Abstract:
A system and method is provided for stabilizing high order sigma delta modulators. The system includes an integrator having a limiter in the feedback path of the integrator. The integrator combines an input signal with a feedback signal generated by the limiter to produce an integrated output signal. The output signal is output to the next component of the sigma delta modulator. In addition, the output signal is fed back through the limiter. When an output signal received in the feedback path by the limiter exceeds the threshold value of the limiter, the limiter is activated and clamps the output signal to produce a limited signal. The limited signal is combined with the input signal to the integrator to produce the output signal.
Method And System For Improved Lookup Table (Lut) Mechanism For Huffman Decoding
Methods and systems for improved lookup table mechanism for Huffman decoding are provided and may include selecting, based on a plurality of entropy encoded bits from a received bitstream, one of a plurality of codewords that is indexed according to a specific length and that points to all entries which include the specific length. The plurality of entropy encoded bits from the received bitstream may be matched with at least one of the entries that include the specific length. The entries that include the specific length may be stored in a table in memory. A value of the plurality of entropy encoded bits may be compared with the selected one of the plurality of codewords that is indexed according to specific length. The plurality of entropy encoded bits from the received bitstream may be decoded based on the matched at least one of the entries comprising the specific length.
Method And System For Pipelined Processing In An Integrated Embedded Image And Video Accelerator
Taiyi Cheng - San Jose CA, US Mark Hahm - Hartland WI, US Li Fung Chang - Holmdel NJ, US
Assignee:
Broadcom Corporation - Irvine CA
International Classification:
G06K 9/36
US Classification:
382234
Abstract:
A method and system for pipelined processing in an integrated embedded image and video accelerator is described. Aspects of a system for pipelined processing in an integrated embedded image and video accelerator may include circuitry that enables pipeline processing of video data within a single chip, wherein the pipeline processing may further include decoding of a block of video data while simultaneously inverse transforming a previously decoded block of video data. Aspects of the system may also include circuitry that enables transformation, within the single chip, of a block of said video data while simultaneously encoding, within said single chip, a previously transformed block of video data.
Audio Codec Integrated With Baseband Processing And Rf
Taiyi Cheng - San Jose CA, US Hongwei Kong - Denville NJ, US Thirunathan Sutharsan - San Diego CA, US Claude Hayek - Huntington Beach CA, US
Assignee:
Broadcom Corporation - Irvine CA
International Classification:
H04L 5/16
US Classification:
375220, 375316, 4555501
Abstract:
An audio codec integrated with baseband processing and RF on a single IC chip. The audio codec may be implemented in a variety of wireless transceivers, such as cell phones, to offer voice, data and/or music functions. The codec also has monaural and stereo channels for audio output, as well as stereo inputs.
Method And System For Handling The Processing Of Bluetooth Data During Multi-Path Multi-Rate Audio Processing
Hongwei Kong - Denville NJ, US Nelson Sollenberger - Farmingdale NJ, US Li Fung Chang - Holmdel NJ, US Claude Hayek - Huntington Beach CA, US Taiyi Cheng - San Jose CA, US
Assignee:
Broadcom Corporation - Irvine CA
International Classification:
H04J 3/22 H03M 7/00
US Classification:
704500, 341 61, 370538, 370545, 381119
Abstract:
An audio codec in a baseband processor may be utilized for mixing audio signals received at a plurality of data sampling rates. The mixed audio signals may be up sampled to a very large sampling rate, and then down sampled to a specified sampling rate that is compatible with a Bluetooth-enabled device by utilizing an interpolator in the audio codec. The down-sampled signals may be communicated to Bluetooth-enabled devices, such as Bluetooth headsets, or Bluetooth-enabled devices with a USB interface. The interpolator may be a linear interpolator for which the audio codec may enable generation of triggering and/or coefficient signals based on the specified output sampling rate. An interpolation coefficient may be generated based on a base value associated with the specified output sampling rate. The audio codec may enable selecting the specified output sampling rate from a plurality of rates.
Method And System For Pipelined Processing In An Integrated Embedded Image And Video Accelerator
Taiyi Cheng - San Jose CA, US Mark Hahm - Hartland WI, US Li Fung Chang - Holmdel NJ, US
Assignee:
Broadcom Corporation - Irvine CA
International Classification:
G06K 9/36
US Classification:
382234
Abstract:
A method and system for pipelined processing in an integrated embedded image and video accelerator is described. Aspects of a system for pipelined processing in an integrated embedded image and video accelerator may include circuitry that enables pipeline processing of video data within a single chip, wherein the pipeline processing may further include decoding of a block of video data while simultaneously inverse transforming a previously decoded block of video data. Aspects of the system may also include circuitry that enables transformation, within the single chip, of a block of said video data while simultaneously encoding, within said single chip, a previously transformed block of video data.
Method And System For Programmable Breakpoints In An Integrated Embedded Image And Video Accelerator
Taiyi Cheng - San Jose CA, US Mark Hahm - Hartland WI, US
Assignee:
Broadcom Corporation - Irvine CA
International Classification:
H04B 1/00 G06T 1/20
US Classification:
375240, 345501, 345506
Abstract:
A method and system for programmable breakpoints in an integrated embedded image and video accelerator are described. Aspects of the system may include circuitry that enables generation of control signals for pipeline processing of video data within a single chip by at least selecting a target location of the video data and generating an interrupt at a time instant corresponding to the pipeline processing of the target location. The system may enable programmable breakpoints to be set and/or triggered based on policies determined in executable software. The ability to set programmable breakpoints may enable flexible utilization of system memory resources.
Method And System For Multi-Band Amplitude Estimation And Gain Control In An Audio Codec
Aspects of a method and system for multi-band amplitude estimation and gain control in an audio CODEC are provided. In this regard, an audio signal may be filtered and delayed to generate one or more sub-band signals, a gain may be applied to each sub-band signal to generate one or more level adjusted sub-band signals, and the one or more level adjusted signals may be added to a delayed version of the audio signal. The gain applied to a particular one of the one or more sub-band signals may be controlled based on a detected amplitude of a summed signal derived by summing the particular one of the one or more sub-band signals and a corresponding one of the one or more level-adjusted sub-band signals.