Image signal band compressing system for digital video tape reco

Details Image signal band compressing system for digital video tape reco Image signal band compressing system for digital video tape reco

1992-12-18

1994-03-29

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Recording apparatus

3582612, 358432, 358433, 358530, 358539, 382 50, 382 56, H04N 1415, H04N 146

Patent

active

052990192

ABSTRACT:
The image signal band compressing method employs a three-dimensional motion compensating technique, an intraframe and an interframe processes which are alternatively executed. The transfer rate of the intraframe to the interframe is set to 4:1 in a unit of fixed length. The intraframe process is defined such that the present frame image data is compressed in a variable length compressing manner by way of two-dimensional discrete coding transform. The interframe process is defined such that motion data is estimated by comparing the present frame and the preceding frame, the present frame is expected on the basis of the motion data and the difference data between the motion compensated image data and the present frame data.

REFERENCES:
patent: 5063608 (1991-11-01), Siegel
patent: 5121216 (1992-06-01), Chen et al.
patent: 5136371 (1992-08-01), Savatier et al.
patent: 5148271 (1992-09-01), Kato et al.
patent: 5212742 (1993-05-01), Normile et al.
patent: 5241395 (1993-08-01), Chen

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