Television signal recording/reproducing apparatus and method wit

Details Television signal recording/reproducing apparatus and method wit Television signal recording/reproducing apparatus and method wit

1997-06-24

1999-06-01

Tran, Thai

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

386 33, 386 40, 386131, H04N 979

Patent

active

059095318

ABSTRACT:
Recording and reproducing a television signal with a DC shifter prevents compression distortion of a PAL plus television signal. The PAL plus television signal includes a vertical resolution signal for enhancing vertical resolution which vertical resolution signal is included in the same compression blocks as some of the component video signals. Such compression blocks are shifted to a DC set up value so that the signals within those compression blocks do not have varying DC offsets which otherwise could result in compression distortion. Similarly, upon reproduction, the DC set up value is removed after decompression and the original television signal is restored with complete vertical resolution.

REFERENCES:
patent: 5293248 (1994-03-01), Bergen et al.
Tojo et al., "Recording Method of the PALplus Signal", IEE Colloquium, Digest No: 1994/090, pp. 6/1-6/4, Apr. 12, 1994.

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