Television – Bandwidth reduction system – Data rate reduction
Patent
1992-10-05
1994-08-09
Chin, Tommy P.
Television
Bandwidth reduction system
Data rate reduction
348420, H04N 7133, H04N 7137
Patent
active
053370864
ABSTRACT:
Image signal coding and decoding apparatus adapted to reduce the redundancy between motion vectors in divided blocks of an image to realize enhanced data compression. The coding apparatus comprises a local decoder for locally decoding quantized data; a motion detector for calculating the motion vectors of individual subblocks defined by dividing macroblocks for motion compensation of a dynamic image; a controller for selecting an optimal process for the motion vectors to minimize the redundancy; a motion compensator for forming a predictive image; and a difference calculator for calculating the difference between the predictive image and the original image signal corresponding thereto. The image signal decoding apparatus comprises an inverse multiplexer for separating the coded data into variable-length coded data and vector coded data; and a controller for selecting an optimal motion vector process on the basis of the vector coded data.
REFERENCES:
patent: 4796087 (1989-01-01), Guichard et al.
patent: 5006929 (1991-04-01), Barbero et al.
patent: 5021879 (1991-06-01), Vogel
patent: 5126841 (1992-06-01), Tanaka et al.
IEEE Global Telecommunications Conference & Exhibition, vol. 2, Nov. 28, 1988, Hollywood, Fla., pp. 997-1004, XP94155, R. Plompen et al., Motion Video Coding in CCITT SG XV. The Video Source Coding paragraph 8; Fig. 5.
Systems and Computers in Japan, vol. 21, No. 9, Sep. 1, 1990, New York USA, pp. 24-33, XP220498, H. Tominaga et al., `A Motion Detection Method on Video Image by Using Hierarchical Pixels`, par. 4.4 0 par. 4.5; FIGS. 7-9.
Patent Abstracts of Japan, vol. 13, No. 509 (E-846) Nov. 15, 1989 & JP-A-01 205 667 (NEC Corp.) Aug. 18, 1989.
Patent Abstracts of Japan, vol. 16, No. 291 (E-1224) Jun. 26, 1992 & JP-A-04 074 085 (Matsushita Electric Industrial Co. Ltd.) Mar. 9, 1992.
Patent Abstracts of Japan, vol. 15, No. 185 (E-1066) May 13, 1991 & JP-A-03 046 481 (Kokusai Denshin Denwa Co Ltd. <KDD>) Feb. 27, 1991.
Patent Abstracts of Japan, vol. 16, No. 104 (E-1178) Mar. 13, 1992 & JP-A-03 280 681 (Oki Electric Ind Co Ltd) Dec. 11, 1991.
Chin Tommy P.
Frommer William S.
Sinderbrand Alvin
Sony Corporation
Tung Bryan S.
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