Francis H Cheung

US Patent:

6853385, Feb 8, 2005

Filed:

Aug 18, 2000

Appl. No.:

09/641374

Inventors:

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

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

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

US Classification:

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

Abstract:

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.

US Patent:

7110006, Sep 19, 2006

Filed:

Nov 23, 2004

Appl. No.:

10/997652

Inventors:

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

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

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

US Classification:

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

Abstract:

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.

US Patent:

7489362, Feb 10, 2009

Filed:

Mar 3, 2004

Appl. No.:

10/791686

Inventors:

David A. Baer - San Jose CA, US
Jeff Tingley - San Jose CA, US
Aleksandr Movshovich - Santa Clara CA, US
Brad Grossman - Sunnyvale CA, US
Brian F. Schoner - Fremont CA, US
Chengfuh Jeffrey Tang - Saratoga CA, US
Chuck Monahan - Mountain View CA, US
Darren D. Neuman - Palo Alto CA, US
David Chao Hua Wu - San Diego CA, US
Francis Cheung - Del Mar CA, US
Greg A. Kranawetter - Saratoga CA, US
Hoang Nhu - Irvine CA, US
Hsien-Chih Jim Tseng - San Jose CA, US
Iue-Shuenn Chen - San Diego CA, US
James D. Sweet - Sunnyvale CA, US
Jeffrey S. Bauch - Torrance CA, US
Keith LaRell Klingler - San Diego CA, US
Patrick Law - Cupertino CA, US
Rajesh Mamidwar - San Diego CA, US
Dan Simon - San Diego CA, US
Sang Van Tran - Encinitas CA, US
Shawn V. Johnson - Laguna Hills CA, US
Steven T. Jaffe - Irvine CA, US
Thu T. Nguyen - San Jose CA, US
Ut Nguyen - San Diego CA, US
Yao-Hua Steven Tseng - Fremont CA, US
Brad Delanghe - Sunnyvale CA, US
Ben Giese - Oceanside CA, US
Jason Demas - Irvine CA, US
Lakshman Ramakrishnan - Bangalore, IN
Sandeep Bhatia - Bangalore, IN
Guang-Ting Shih - San Jose CA, US
Tracy C. Denk - Aliso Viejo CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H04N 5/44
H04N 3/27

US Classification:

348554, 348725

Abstract:

A television on a chip (TVOC) system that provides a cost effective approach for providing television functionality on a single integrated circuit chip is disclosed. A TVOC includes the functionality necessary to receive and display television signals in a variety of input and output formats. A TVOC can be used in set-top boxes for cable and satellite television, or directly within a television. All functionality provided can be provided on a single integrated circuit. TVOC includes a data transport module, an IF demodulator, a digital audio engine, an analog audio engine, a digital video engine, and an analog video engine. The TVOC also includes three sets of interfaces including output interfaces, control interfaces and ancillary interfaces. Further features and embodiments provide enhanced functionality and increased efficiencies.

US Patent:

7667715, Feb 23, 2010

Filed:

Aug 3, 2006

Appl. No.:

11/498595

Inventors:

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

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

G09G 5/00
G09G 5/36
H04N 11/22
H04N 11/00
H04L 12/28

US Classification:

345629, 345519, 345636, 345505, 345560, 348455, 348561, 348492, 348688, 725 40, 725 63, 725105, 725117, 370389

Abstract:

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.

US Patent:

7961255, Jun 14, 2011

Filed:

Feb 6, 2009

Appl. No.:

12/367425

Inventors:

David A. Baer - San Jose CA, US
Jeff Tingley - San Jose CA, US
Aleksandr Movshovich - Santa Clara CA, US
Brad Grossman - Sunnyvale CA, US
Brian F. Schoner - Fremont CA, US
Chengfuh Jeffrey Tang - Saratoga CA, US
Chuck Monahan - Mountain View CA, US
Darren D. Neuman - Palo Alto CA, US
David Chao Hua Wu - San Diego CA, US
Francis Cheung - Del Mar CA, US
Greg A. Kranawetter - Laguna Hills CA, US
Hoang Nhu - Irvine CA, US
Hsien-Chih Jim Tseng - San Jose CA, US
Iue-Shuenn Chen - San Diego CA, US
James D. Sweet - Sunnyvale CA, US
Jeffrey S. Bauch - Alpharetta GA, US
Keith LaRell Klinger - San Diego CA, US
Patrick Law - Cupertino CA, US
Rajesh Mamidwar - San Diego CA, US
Dan Simon - San Diego CA, US
Sang Van Tran - Encinitas CA, US
Shawn V. Johnson - Laguna Hill CA, US
Steven T. Jaffe - Irvine CA, US
Thu T. Nguyen - San Jose CA, US
Ut Nguyen - San Diego CA, US
Yao-Hua Steven Tseng - Fremont CA, US
Brad Delanghe - Sunnyvale CA, US
Ben Giese - Oceanside CA, US
Jason Demas - Irvine CA, US
Lakshman Ramakrishnan - Banglore, IN
Sandeep Bhatia - Bangalore, IN
Guang-Ting Shih - San Jose CA, US
Tracy C. Denk - Aliso Viejo CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H04N 5/44
H04N 3/27

US Classification:

348554, 348725

Abstract:

A television on a chip (TVOC) system that provides a cost effective approach for providing television functionality on a single integrated circuit chip is disclosed. A TVOC includes the functionality necessary to receive and display television signals in a variety of input and output formats. A TVOC can be used in set-top boxes for cable and satellite television, or directly within a television. All functionality provided can be provided on a single integrated circuit. TVOC includes a data transport module, an IF demodulator, a digital audio engine, an analog audio engine, a digital video engine, and an analog video engine. The TVOC also includes three sets of interfaces including output interfaces, control interfaces and ancillary interfaces. Further features and embodiments provide enhanced functionality and increased efficiencies.

US Patent:

20120147974, Jun 14, 2012

Filed:

Jun 14, 2011

Appl. No.:

13/160461

Inventors:

David A. BAER - San Jose CA, US
Jeff Tingley - San Jose CA, US
Aleksandr Movshovich - Santa Clara CA, US
Brad Grossman - Sunnyvale CA, US
Brian F. Schoner - Fremont CA, US
Chengfuh Jeffrey Tang - Saratoga CA, US
Chuck Monahan - Mountain View CA, US
Darren D. Neuman - Palo Alto CA, US
David Chao Hua Wu - San Diego CA, US
Francis Cheung - Del Mar CA, US
Greg A. Kranawetter - Laguna Hills CA, US
Hoang Nhu - Irvine CA, US
Hsien-Chih Jim Tseng - San Jose CA, US
Iue-Shuenn Chen - San Diego CA, US
James D. Sweet - Sunnyvale CA, US
Jeffrey S. Bauch - Alpharetta GA, US
Keith LaRell Klingler - San Diego CA, US
Patrick Law - Cupertino CA, US
Rajesh Mamidwar - San Diego CA, US
Dan Simon - San Diego CA, US
Sang Van Tran - Encinitas CA, US
Shawn V. Johnson - Laguna Hills CA, US
Steven T. Jaffe - Irvine CA, US
Thu T. Nguyen - San Jose CA, US
Ut Nguyen - San Diego CA, US
Yao-Hua Steven Tseng - Fremont CA, US
Brad Delanghe - Sunnyvale CA, US
Ben Giese - Oceanside CA, US
Jason Demas - Irvine CA, US
Lakshman Ramakrishnan - Bangalore, IN
Sandeep Bhatia - Bangalore, IN
Guang-Ting Shih - San Jose CA, US
Tracy C. Denk - Aliso Viejo CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H04N 7/26

US Classification:

37524025, 375E07027

Abstract:

A television on a chip (TVOC) system that provides a cost effective approach for providing television functionality on a single integrated circuit chip is disclosed. A TVOC includes the functionality necessary to receive and display television signals in a variety of input and output formats. A TVOC can be used in set-top boxes for cable and satellite television, or directly within a television. All functionality provided can be provided on a single integrated circuit. TVOC includes a data transport module, an IF demodulator, a digital audio engine, an analog audio engine, a digital video engine, and an analog video engine. The TVOC also includes three sets of interfaces including output interfaces, control interfaces and ancillary interfaces. Further features and embodiments provide enhanced functionality and increased efficiencies.