Image analysis – Image compression or coding – Predictive coding
Reexamination Certificate
2011-04-26
2011-04-26
Ahmed, Samir A (Department: 2624)
Image analysis
Image compression or coding
Predictive coding
C382S232000, C382S239000, C382S251000
Reexamination Certificate
active
07933458
ABSTRACT:
According to an embodiment of the invention, there is provided an image decoder for decoding encoded image data in an image block unit, including: a storage device configured to store a DC component of a past image block coefficient as a prediction value; a predict circuit configured to predict a DC component of a current image block coefficient using the prediction value; an inversely quantizing circuit configured to inversely quantize an image block coefficient outputted from the predict circuit; and a saturation processing circuit to execute a saturation processing of an image block coefficient outputted from the inversely quantizing circuit. A DC component of the image block coefficient outputted from the inversely quantizing circuit and a DC component of the image block coefficient after execution of the saturation processing are respectively inputted to the storage device.
REFERENCES:
patent: 5974184 (1999-10-01), Eifrig et al.
patent: 6134269 (2000-10-01), Puri et al.
patent: 6385242 (2002-05-01), Chen
patent: 6850648 (2005-02-01), Suzuki
patent: 7148822 (2006-12-01), Suzuki
patent: 2003/0118239 (2003-06-01), Suh et al.
patent: 2003/0152149 (2003-08-01), Denolf
patent: 2006/0222064 (2006-10-01), Sherigar et al.
patent: 2006/0282237 (2006-12-01), Xiao et al.
International Standard ISO/IEC 14496-5, coding of audio-visual objects, part 5: reference software. Apr. 1, 2004.
Cupak et al. “Chapter 7: MPEG-4 video decoder” in “System level design of reconfigurable systems-on chips”, 2005 Springer.
Wang Lin “MPEG-4 Video Coding Algorithm: Implementation and Performance Evaluation”, Project Report, University of Alberta, 2001.
International Standard, Information technology—Coding of audio-visual objects—Part 2: Visual, ISO/IEC 14496-2 Second Edition (2001), Dec. 1, 2001, pp. 169-175 and cover page, Section 7.4.3-7.4.4.4.
International Standard, Information technology—Coding of audio-visual objects—Part 5: Reference Software, ISO/IEC 14496-5 Second Edition (2001), Dec. 15, 2001, (Not a Document, Cover Page Only).
Ahmed Samir A
Kabushiki Kaisha Toshiba
Liu Li
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
LandOfFree
Image decoder, image decoding method and computer program... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Image decoder, image decoding method and computer program..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image decoder, image decoding method and computer program... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2723219