Motion estimating device for variable length encoded data

Details Motion estimating device for variable length encoded data Motion estimating device for variable length encoded data

1993-05-10

1995-02-21

Brier, Jeffery

Television

Bandwidth reduction system

Data rate reduction

348402, 348416, 348407, H04N 7137, H04N 712, H04N 7133

Patent

active

053920732

ABSTRACT:
An apparatus for digitally encoding/decoding data including pictorial images and sounds for use in High Definition Television (HDTV), High Definition-Video Tape Recorder (HD-VCR), digital VCR, digital camcorder, multimedia, videophone, and video conference type applications. The apparatus includes a motion estimating device for a variable length encoder which encodes a video signal into variable length encoded data. The motion estimating device includes a mean error calculating circuit, responsive to the video signal, for calculating a mean error corresponding to an estimated difference between pixel data of a reference picture and pixel data of a current picture of the video signal, and a motion vector setting circuit, coupled to an output of the mean error calculating circuit, for generating a motion vector corresponding to a minimum horizontal/vertical displacement of the current picture relative to the reference picture.

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patent: 5068722 (1991-11-01), Sugiyama
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patent: 5136376 (1992-08-01), Yagasaki et al.
patent: 5136615 (1992-08-01), Tanoi
patent: 5150432 (1992-09-01), Ueno et al.
patent: 5198900 (1993-03-01), Tsukagoshi
patent: 5237410 (1993-08-01), Inoue
patent: 5267037 (1993-11-01), Sugiyama

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