Francis C Cheung, 703605 Indiana St, San Diego, CA 92103

6538656, Mar 25, 2003

Aug 18, 2000

09/640869

Francis Cheung - San Diego CA
Carolyn B. Walker - Poway CA
Glen A. Grover - San Diego CA
Ben S. Giese - Oceanside CA

Broadcom Corporation - Irvine CA

H04J 306

345519, 345716, 345555, 345556, 345567, 348 1413, 348416, 348571, 370471, 370473

A video and graphics system uses multiple transport processors to receive compressed data streams to perform PID and section filtering as well as DVB and DES decryption and to demultiplex them. The compressed data streams may include in-band and out-of-band MPEG Transport streams. The video and graphics system processes the PES into digital audio, MPEG video and message data. A core transport processor includes a PCR recovery module for extracting PCRs contained in the compressed data streams and for providing the extracted PCRs to a video transport processor and an audio decode processor. The PCR recovery module has a direct load capability for receiving user defined PCRs and outputting them instead of outputting the extracted PCRs. The PCR recovery module extracts PCRs from both MPEG Transport streams and DIRECTV transport streams. The core transport processor may also include a transport recorder for storing portions of compressed data streams and a playback circuit for reading the stored portions of the compressed data streams.

6781601, Aug 24, 2004

Feb 5, 2002

10/068579

Francis Cheung - Del Mar CA

Broadcom Corporation - Irvine CA

H04N 712

345629, 3483851, 3483881, 370348, 370431

The present invention relates to a system and method for processing information, specifically data packets. One embodiment of the present invention relates to a method for processing information, comprising determining if a first identifier associated with the information is acceptable and assigning a second identifier to the information. The method further includes determining a type of processing that is required using the second identifier and performing that type of processing on the information.

6853385, Feb 8, 2005

Aug 18, 2000

09/641374

Alexander G. MacInnis - Los Altos CA, US
Chengfuh Jeffrey Tang - Saratoga CA, US
Xiaodong Xie - San Jose CA, US
Greg A. Kranawetter - San Jose CA, US
Vivian Hsiun - Palo Alto CA, US
Francis Cheung - San Diego CA, US
Sandeep Bhatia - Bangalore, IN
Ramanujan Valmiki - Bangalore, IN
Sathish Kumar - Bangalore, IN

Broadcom Corporation - Irvine CA

G09G005/00
G09G005/36
H04N011/22
H04N011/00
H04L012/28

345629, 345636, 345505, 345519, 345554, 345560, 348455, 348461, 348492, 348668, 370389, 725 40, 725 63, 725105, 725117

A video, audio and graphics system uses multiple transport processors to receive in-band and out-of-band MPEG Transport streams, to perform PID and section filtering as well as DVB and DES decryption and to de-multiplex them. The system processes the PES into digital audio, MPEG video and message data. The system is capable of decoding multiple MPEG SLICEs concurrently. Graphics windows are blended in parallel, and blended with video using alpha blending. During graphics processing, a single-port SRAM is used equivalently as a dual-port SRAM. The video may include both analog video, e. g. , NTSC/PAL/SECAM/S-video, and digital video, e. g. , MPEG-2 video in SDTV or HDTV format. The system has a reduced memory mode in which video images are reduced in half in horizontal direction only during decoding. The system is capable of receiving and processing digital audio signals such as MPEG Layer 1 and Layer 2 audio and Dolby AC-3 audio, as well as PCM audio signals. The system includes a memory controller.

7110006, Sep 19, 2006

Nov 23, 2004

10/997652

Alexander G. MacInnis - Los Altos CA, US
Chengfuh Jeffrey Tang - Saratoga CA, US
Xiaodong Xie - San Jose CA, US
Greg A. Kranawetter - San Jose CA, US
Vivian Hsiun - Palo Alto CA, US
Francis Cheung - San Diego CA, US
Sandeep Bhatia - Bangalore, IN
Ramanujan Valmiki - Bangalore, IN
Sathish Kumar - Bangalore, IN

Broadcom Corporation - Irvine CA

H04N 5/445
G09G 5/00
G06F 13/00
H04N 5/45
G09G 7/01
G09G 11/20

345629, 345519, 348441, 348461, 348564, 725 40

A video, audio and graphics system uses multiple transport processors to receive in-band and out-of-band MPEG Transport streams, to perform PID and section filtering as well as DVB and DES decryption and to de-multiplex them. The system processes the PES into digital audio, MPEG video and message data. The system is capable of decoding multiple MPEG SLICEs concurrently. Graphics windows are blended in parallel, and blended with video using alpha blending. During graphics processing, a single-port SRAM is used equivalently as a dual-port SRAM. The video may include both analog video, e. g. , NTSC/PAL/SECAM/S-video, and digital video, e. g. , MPEG-2 video in SDTV or HDTV format. The system has a reduced memory mode in which video images are reduced in half in horizontal direction only during decoding. The system is capable of receiving and processing digital audio signals such as MPEG Layer 1 and Layer 2 audio and Dolby AC-3 audio, as well as PCM audio signals. The system includes a memory controller.

7174085, Feb 6, 2007

Aug 20, 2001

09/933231

Jason Demas - Irvine CA, US
Marcus Kellerman - Aliso Viejo CA, US
Francis Cheung - Del Mar CA, US
Sherman Xuemin Chen - San Diego CA, US

Broadcom Corporation - Irvine CA

H04N 5/781
H04N 5/76
H04N 5/915

386 68, 386111, 386124

Methods and apparatus for switching between a live video decoding and a recorded playback in a digital video and recording system. A received video data stream is transmitted to a first-in first-out video decoder buffer without first looping the video data stream through a playback buffer. The video data stream is transmitted from the video decoder buffer to a video decoder. If a “pause” command is received, the video data stream is transmitted to a first-in first-out playback buffer, while continuing to transmit the video data stream to the video decoder buffer. Transmission of the video data stream to the video decoder buffer is halted when the video decoder buffer fills up. The last byte of the video data stream that was transmitted to the video decoder buffer is marked. If a “play” command is received, the video data stored in the video decoder buffer is transmitted to the video decoder. The video data stored in the playback buffer is transmitted to the video decoder buffer starting at a point immediately after the data element that was marked previously.

7194627, Mar 20, 2007

Apr 15, 2003

10/414844

Francis Cheung - Del Mar CA, US
Jason Monroe - Ladera Ranch CA, US
Jay Kwok Wa Li - Milpitas CA, US
Kevin Patariu - San Diego CA, US
Iue-Shuenn Chen - San Diego CA, US

Broadcom Corporation - Irvine CA

G06F 1/24

713168, 713182, 713189, 713193

An aspect of the of the invention may include the transfer of a block of data from a first memory location to a second memory location in a DRAM. During the transfer of the block of data from the first memory location, if an encryption mode is selected, the data may be buffered, encrypted, and then stored in the second memory location. If a decryption mode is selected, the transferred data may be buffered, decrypted and then stored in the second memory location. If a bypass mode is selected, the data may be buffered and then stored in the second memory location. In this regard, the encryption/decryption operations may be bypassed.

7346054, Mar 18, 2008

Mar 19, 2003

10/391848

Iue-Shuenn Chen - San Diego CA, US
Rajesh Mamidwar - San Diego CA, US
Francis Cheung - Del Mar CA, US
Xuemin Chen - San Diego CA, US

Broadcom Corporation - Irvine CA

H04L 12/56
H04L 12/28

370390, 370394, 370487, 370389

A first primary packet to create a second primary packet for a particular PID. Different CRC checksum may be generated for the first and the second primary packet. The first primary packet may be replicated in order to create a first secondary packet and the second primary packet may be replicated to create a second secondary packet. The CRC checksum for the primary packets may be stored within their corresponding secondary packets. In response to receipt of a new stream with replicated packets, the first or said second primary packet may be selected and the first or second secondary packet may be selected for a particular PID based on the generated CRC checksum. The selections may co-relate the selected first and/or second primary packet with a legacy system or the selected first and/or second secondary packet with a new system.

7346055, Mar 18, 2008

Mar 19, 2003

10/392471

Iue-Shuenn Chen - San Diego CA, US
Rajesh Mamidwar - San Diego CA, US
Francis Cheung - Del Mar CA, US
Xuemin Chen - San Diego CA, US

Broadcom Corporation - Irvine CA

H04L 12/28
H04H 1/04

370390, 370394, 370487, 370389

Aspects of the present invention may include replicating a first primary packet to create a second primary packet for a particular channel. A unique identifier may be assigned to the first primary packet and a different unique identifier may be assigned to the second primary packet. The first primary packet may be replicated in order to create a first secondary packet and the second primary packet may be replicated to create a second secondary packet. In response to the receipt of the new stream with replicated packets, the first or said second primary packet may be selected and the first or second secondary packet may be selected for a particular PID based on the assigned unique identifier. The selections may be done to co-relate the selected first and/or second primary packet with a legacy system or the selected first and/or second secondary packet with a new system.