Image analysis – Image compression or coding – Predictive coding
Reexamination Certificate
2004-04-22
2010-10-12
Strege, John B (Department: 2624)
Image analysis
Image compression or coding
Predictive coding
Reexamination Certificate
active
07813571
ABSTRACT:
An image encoding apparatus includes a converter1for receiving an image signal, and for converting the image signal of individual blocks to DC components and AC components by orthogonal transformation of the individual blocks of an image frame; a predicted reference value generator2for receiving the image signal, and for generating a predicted reference value of each image frame from DC components resulting from the orthogonal transformation of left-edge blocks of the image frame; and a differential unit3for obtaining difference values between the DC components output from the converter1and the predicted reference value generated by the predicted reference value generator2. The image encoding apparatus outputs a bit stream by quantizing and variable-length encoding the AC components and difference values obtained by the differential unit3, and by quantizing and variable-length encoding the predicted reference value to be added to a header.
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Published by OHMSHA, “MPEG”, compiled by the Institute of Television Engineer of Japan, Apr. 20, 1996, Japan, p. 106.
Kato Yoshiaki
Kudo Daiki
Nishikawa Hirofumi
Yamada Yoshihisa
Birch & Stewart Kolasch & Birch, LLP
Mitsubishi Electric Corporation
Patel Nirav G
Strege John B
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