Computer graphics processing and selective visual display system – Computer graphic processing system – Integrated circuit
Reexamination Certificate
2000-08-18
2003-03-25
Bella, Matthew C. (Department: 2672)
Computer graphics processing and selective visual display system
Computer graphic processing system
Integrated circuit
C345S215000, C345S555000, C345S556000, C345S567000, C348S014130, C348S416100, C348S571000, C370S471000, C370S473000
Reexamination Certificate
active
06538656
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates generally to integrated circuits, and more particularly to an integrated circuit system for processing and displaying video and graphics.
BACKGROUND OF THE INVENTION
Video and graphics systems are typically used in television control electronics, such as set top boxes, integrated digital TVs, and home network computers. Video and graphics systems may receive and process compressed data streams, an example of which is an MPEG-2 Transport stream. Video and graphics systems used to process compressed data streams may include a data transport processor for extracting message data and other information from the compressed data streams.
This application includes references to both graphics and video, which reflects in certain ways the structure of the hardware itself. This split does not, however, imply the existence of any fundamental difference between graphics and video, and in fact much of the functionality is common to both. Graphics as used herein may include graphics, text and video.
SUMMARY OF THE INVENTION
One embodiment of the present invention is a transport processor for receiving and processing compressed data streams. The transport processor includes a descrambler for decrypting one or more compressed data streams when the one or more compressed data streams have been encrypted, and a PCR recovery module for extracting PCRs contained in the compressed data streams and for providing the extracted PCRs as an output. The PCR recovery module has a direct load capability for receiving user defined PCRs and outputting them instead of outputting the extracted PCRs. The compressed data streams may have been encrypted using either DES or DVB encryption method. The PCR recovery module may be capable of extracting PCRs from both MPEG Transport streams and DIRECTV transport streams.
Another embodiment of the present invention is a method of receiving and processing compressed data streams. The method includes decrypting one or more compressed data streams when the one or more compressed data streams have been encrypted, extracting PCRs contained in the compressed data streams, and providing the extracted PCRs as an output.
Yet another embodiment of the present invention is a transport processor including a transport recorder for storing portions of compressed data streams in memory and a playback circuit for reading the stored portions of the compressed data streams. The playback circuit includes a throttling mechanism and a hold mechanism to prevent overflow in video and audio buffers.
Yet another embodiment of the present invention is a video and graphics system. The system includes an input for receiving analog video data, an input for receiving graphics data, a core transport processor for receiving and processing a plurality of compressed data streams, a first satellite transport processor for receiving at least one of the compressed data streams and extracting video data, and a second satellite transport processor for receiving at least one of the compressed data streams and extracting audio data. The core transport processor uses a clock reference recovery module to extract clock reference data from the compressed data streams, and provide the extracted clock reference data to downstream devices including at least one of the first satellite transport processor and the second satellite transport processor. The video and graphics system may be implemented on an integrated circuit chip.
REFERENCES:
patent: 4020332 (1977-04-01), Crochiere et al.
patent: 4367466 (1983-01-01), Takeda et al.
patent: 4532547 (1985-07-01), Bennett
patent: 4679040 (1987-07-01), Yan
patent: 4688033 (1987-08-01), Carini et al.
patent: 4959718 (1990-09-01), Bennett
patent: 5043714 (1991-08-01), Perlman
patent: 5097257 (1992-03-01), Clough et al.
patent: 5142273 (1992-08-01), Wobermin
patent: 5155816 (1992-10-01), Kohn
patent: 5258747 (1993-11-01), Oda et al.
patent: 5262854 (1993-11-01), Ng
patent: 5307177 (1994-04-01), Shibata et al.
patent: 5384912 (1995-01-01), Ogrinc et al.
patent: 5396567 (1995-03-01), Jass
patent: 5398211 (1995-03-01), Willenz et al.
patent: 5418535 (1995-05-01), Masucci et al.
patent: 5432900 (1995-07-01), Rhodes et al.
patent: 5434683 (1995-07-01), Sekine et al.
patent: 5434957 (1995-07-01), Moller
patent: 5467144 (1995-11-01), Saeger et al.
patent: 5471411 (1995-11-01), Adams et al.
patent: 5515077 (1996-05-01), Tateyama
patent: 5526054 (1996-06-01), Greenfield et al.
patent: 5533182 (1996-07-01), Bates et al.
patent: 5546103 (1996-08-01), Rhodes et al.
patent: 5550594 (1996-08-01), Cooper et al.
patent: 5570296 (1996-10-01), Heyl et al.
patent: 5577187 (1996-11-01), Mariani
patent: 5600364 (1997-02-01), Hendricks et al.
patent: 5604514 (1997-02-01), Hancock
patent: 5614952 (1997-03-01), Boyce et al.
patent: 5615376 (1997-03-01), Ranganathan
patent: 5619337 (1997-04-01), Naimpally
patent: 5621869 (1997-04-01), Drews
patent: 5621906 (1997-04-01), O'Neill et al.
patent: 5625611 (1997-04-01), Yokota et al.
patent: 5635985 (1997-06-01), Boyce et al.
patent: 5638501 (1997-06-01), Gough et al.
patent: 5640543 (1997-06-01), Farrell et al.
patent: 5664162 (1997-09-01), Dye
patent: 5694143 (1997-12-01), Fielder et al.
patent: 5696527 (1997-12-01), King et al.
patent: 5708764 (1998-01-01), Borrel et al.
patent: 5719593 (1998-02-01), De Lange
patent: 5742779 (1998-04-01), Steele et al.
patent: 5745095 (1998-04-01), Parchem et al.
patent: 5751979 (1998-05-01), McCrory
patent: 5758177 (1998-05-01), Gulick et al.
patent: 5761516 (1998-06-01), Rostoker et al.
patent: 5764238 (1998-06-01), Lum et al.
patent: 5790136 (1998-08-01), Hoffert et al.
patent: 5790795 (1998-08-01), Hough
patent: 5790842 (1998-08-01), Charles et al.
patent: 5793445 (1998-08-01), Lum et al.
patent: 5815137 (1998-09-01), Weatherford et al.
patent: 5828383 (1998-10-01), May et al.
patent: 5831615 (1998-11-01), Drews et al.
patent: 5844608 (1998-12-01), Yu et al.
patent: 5864345 (1999-01-01), Wickstrom et al.
patent: 5867166 (1999-02-01), Myhrvold et al.
patent: 5874967 (1999-02-01), West et al.
patent: 5894300 (1999-04-01), Takizawa
patent: 5914728 (1999-06-01), Yamagishi et al.
patent: 5920572 (1999-07-01), Washington et al.
patent: 5923316 (1999-07-01), Kitamura et al.
patent: 5923385 (1999-07-01), Mills et al.
patent: 5926647 (1999-07-01), Adams et al.
patent: 5940089 (1999-08-01), Dilliplane et al.
patent: 5949432 (1999-09-01), Gough et al.
patent: 5949439 (1999-09-01), Ben-Joseph et al.
patent: 5951664 (1999-09-01), Lambrecht et al.
patent: 5956041 (1999-09-01), Koyamada et al.
patent: 5959626 (1999-09-01), Garrison et al.
patent: 5959637 (1999-09-01), Mills et al.
patent: 5963201 (1999-10-01), McGreggor et al.
patent: 5963262 (1999-10-01), Ke et al.
patent: 5977933 (1999-11-01), Wicher et al.
patent: 5982459 (1999-11-01), Fandrianto et al.
patent: 5987555 (1999-11-01), Alzien et al.
patent: 6002411 (1999-12-01), Dye
patent: 6005546 (1999-12-01), Keene
patent: 6006303 (1999-12-01), Barnaby et al.
patent: 6018803 (2000-01-01), Kardach
patent: 6023302 (2000-02-01), MacInnis et al.
patent: 6028583 (2000-02-01), Hamburg
patent: 6038031 (2000-03-01), Murphy
patent: 6046740 (2000-04-01), LaRoche et al.
patent: 6064676 (2000-06-01), Slattery et al.
patent: 6078305 (2000-06-01), Mizutani
patent: 6088355 (2000-07-01), Mills et al.
patent: 6094226 (2000-07-01), Ke et al.
patent: 6098046 (2000-08-01), Cooper et al.
patent: 6100826 (2000-08-01), Jeon et al.
patent: 6100899 (2000-08-01), Ameline et al.
patent: 6105048 (2000-08-01), He
patent: 6111896 (2000-08-01), Slattery et al.
patent: 6115422 (2000-09-01), Anderson et al.
patent: 6121978 (2000-09-01), Miler
patent: 6133901 (2000-10-01), Law
patent: 6151030 (2000-11-01), DeLeeuw et al.
patent: 6151074 (2000-11-01), Werner
patent: 6157415 (2000-12-01), Glen
patent: 6157978 (2000-12-01), Ng et al.
patent: 6160989 (2000-12-01), Hendricks et al.
patent: 6169843 (2001-01-01), Lenihan et al.
patent: 6184908 (2001-02-01), Chan et al.
patent: 6189064 (2001-02-01), MacInnis et al.
patent: 6199131 (2001-03-01), Melo et al.
pate
Cheung Francis
Giese Ben S.
Grover Glen A.
Walker Carolyn B.
Bella Matthew C.
Broadcom Corporation
Christie Parker & Hale LLP
Sajous Wesner
LandOfFree
Video and graphics system with a data transport processor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Video and graphics system with a data transport processor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Video and graphics system with a data transport processor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3004401