Methods and apparatus for encoding and decoding images

Computer graphics processing and selective visual display system – Computer graphics processing – Attributes

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C345S600000, C345S606000, C345S547000, C345S549000, C348S393100, C348S557000, C348S568000, C382S166000, C382S232000, C382S233000, C375S240250

Reexamination Certificate

active

07450134

ABSTRACT:
Methods and apparatus for generating images, compressing image data, decompressing image data, and processing the decompressed image data so that it can be used by a rendering circuit of a device, e.g., a set top box, are described. Images are generated in the native format used by the rendering circuit of the device which will ultimately control the display of the image avoiding the need to perform processing associated with converting color component information from one format to another. Uncompressed image data is arranged in a file with color component values being grouped separately from alpha values to facilitate compression by a standard file compression technique. The file is compressed using a conventional file compression operation. The compressed image file is decompressed when needed and the alpha data and color component data is reorganized so that the color component values and alpha value(s) corresponding to individual pixels are grouped together.

REFERENCES:
patent: 5351133 (1994-09-01), Blonstein
patent: 5710719 (1998-01-01), Houle
patent: 5867112 (1999-02-01), Kost
patent: 6748520 (2004-06-01), Maynard et al.
patent: 2001/0033286 (2001-10-01), Stokes et al.
patent: 2003/0007695 (2003-01-01), Bossut et al.
patent: 2004/0010565 (2004-01-01), Hong et al.
Deutsch, Peter, “RFC 1052 (RFC1952)”, downloaded on Sep. 23, 2004, from http://www.faqs.org/rfcs/rfc1952.html, 11 pgs., Aladdin Enterprises, May 1996.
Roelofs, Greg, “A Basic Introduction to PNG Features”, downloaded on Sep. 23, 2004, from: http://www.libpng.org/pub/png/pngintro/html, 7 pgs., last modified Aug. 10, 2004.
“PNG (Portable Network Graphics”, downloaded on Sep. 23, 2004, from http://www.w3org.Graphics/PNG/, 2 pgs., created Feb. 14, 1995, last updated May 17, 2004.
“Portable Network Graphics (PNG) Specification (Second Edition) Information technology—Computer graphics and image processing—Portable Network Graphics (PNG): Finctinal specification. ISO/IEC 15948:2003 (E)”, downloaded on Sep. 23, 2004, http://www.w3org.TR/PNG, 27 pgs., 2003.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Methods and apparatus for encoding and decoding images does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Methods and apparatus for encoding and decoding images, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods and apparatus for encoding and decoding images will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4031746

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.