Apparatus for coding and decoding a digital video signal derived

Details Apparatus for coding and decoding a digital video signal derived Apparatus for coding and decoding a digital video signal derived

1993-09-17

1995-10-24

Britton, Howard W.

Television

Bandwidth reduction system

Data rate reduction

358415, 358416, 348911, H04N 750

Patent

active

054614201

ABSTRACT:
A method for coding an input video signal with a field rate of 60 Hz derived from a motion picture film source using 2-3 pulldown. In the method, duplicate fields are detected in the input video signal. Each duplicate field is eliminated from the input video signal to produce a progressive video signal comprising plural frames with a frame rate of 24 Hz. Finally, the progressive video signal is coded to produce a coded video signal. Preferably, when a duplicate field is detected in the input video signal, a control signal is generated in response to each detected duplicated field. Each control signal is then included in the coded video signal.

REFERENCES:
patent: 5016101 (1991-05-01), Richards
patent: 5221966 (1993-06-01), Clayton
patent: 5255091 (1993-10-01), Lyon
patent: 5267035 (1993-11-01), Weckenbrock
patent: 5272529 (1993-12-01), Frederiksen
Woo Paik, "Digicipher-All Digital, Channel Compatible, HDTV Broadcast System," IEEE, 1990, vol. 36, No. 4, pp. 245-254.

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