Computer graphics processing and selective visual display system – Computer graphics display memory system – Memory allocation
Reexamination Certificate
2006-12-05
2006-12-05
Chauhan, Ulka (Department: 2628)
Computer graphics processing and selective visual display system
Computer graphics display memory system
Memory allocation
C345S530000, C711S212000
Reexamination Certificate
active
07145567
ABSTRACT:
Image data having a bit depth of m bits, where m is not a power of two, may be divided into two parts for storage. The first part is the n most significant bits, where n is a power of two. The second part is the k least significant bits, where k=m−n and k<n. For example, 10-bit data may be separated into 8-bit and 2-bit parts. The 8-bit data for a given image is placed in the bitstream as a contiguous block with the end of the data aligned with a memory boundary, such as a page boundary. The 2-bit data is collected into bytes that are placed in the bitstream as a contiguous block. The block of 2-bit data is placed in the bitstream preceding and contiguous with the block of 8-bit data. Padding may be provided to align the beginning of the image data with a memory boundary. The image data for multiple images may be placed in the bitstream contiguously for storage. 10-bit data for an alpha channel, if any, also may be split into 8-bit and 2-bit parts. The 8-bit alpha data for a given image is placed in the bitstream as a contiguous block with the beginning of the data aligned with a memory boundary, such as a page boundary. The 2-bit alpha data is collected into bytes that are placed in the bitstream as a contiguous block. The block of 2-bit alpha data is placed in the bistream subsequent to and contiguous with the block of 8-bit alpha data. Padding may be provided to align the end of the alpha data with a page boundary. The alpha data for multiple images may be placed in the bitstream contiguously for storage.
REFERENCES:
patent: 4677421 (1987-06-01), Taniyama
patent: 4965668 (1990-10-01), Abt et al.
patent: 5081450 (1992-01-01), Lucas et al.
patent: 5237316 (1993-08-01), Cox, Jr. et al.
patent: 5557763 (1996-09-01), Senter et al.
patent: 5570356 (1996-10-01), Finney et al.
patent: 5590326 (1996-12-01), Manabe
patent: 5649217 (1997-07-01), Yamanaka et al.
patent: 5673065 (1997-09-01), DeLeeuw
patent: 6239815 (2001-05-01), Frink et al.
patent: 2001/0049778 (2001-12-01), Van Der Vleuten et al.
patent: 0387882 (1990-09-01), None
patent: 0405885 (1991-01-01), None
patent: 0647067 (1995-04-01), None
patent: 2269922 (1994-02-01), None
Symes, Peter D., “Ten-Bit Processing in an 8-Bit Environment”, SMPTE Journal, Jun. 1989, pp. 444-446.
Eid Michel
Porchet Jean-Marc
Avid Technology Inc.
Chauhan Ulka
Gordon Peter J.
Hamilton John A.
Hsu Joni
LandOfFree
Bitstream format and reading and writing methods and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bitstream format and reading and writing methods and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bitstream format and reading and writing methods and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3665069