Television – Bandwidth reduction system – Data rate reduction
Patent
1997-11-12
1999-02-23
Britton, Howard
Television
Bandwidth reduction system
Data rate reduction
348413, 348416, 348699, 386112, H04N 730
Patent
active
058749969
ABSTRACT:
A movement detection device includes a first detection unit which detects a high-frequency component of an image signal in units of blocks each consisting of a plurality of pixel data. A second detection unit detects a low-frequency component of the image signal in units of blocks, and a discrimination unit discriminates a movement of the image signal in accordance with outputs from the first and second detection units. Also included is an encoding apparatus having an input unit which inputs image data, and a block forming unit which divides the input image data input into blocks. An orthogonal transform unit orthogonally transforms the image data blocks, and a quantization unit quantizes the orthogonally transformed image data. A detection unit detects the degree of fineness of each image data block, and a control unit performs switching control of a processing method of the orthogonal transform unit in accordance with an output from the detection unit.
REFERENCES:
patent: 4849812 (1989-07-01), Borgers et al.
patent: 5091782 (1992-02-01), Krause
patent: 5422646 (1995-06-01), Herpel
patent: 5434622 (1995-07-01), Lim
patent: 5561532 (1996-10-01), Shinji et al.
Hamanaka Akiyoshi
Matsui Izumi
Shimokoriyama Makoto
Yamamoto Yukinori
Britton Howard
Canon Kabushiki Kaisha
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