Digital image signal recording apparatus

Details Digital image signal recording apparatus Digital image signal recording apparatus

1994-11-29

1996-12-17

Britton, Howard W.

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

348405, H04N 576, H04N 712

Patent

active

055859631

ABSTRACT:
A digital image signal recording apparatus can record a digital image signal in which a picture quality can be prevented from being deteriorated even when dubbing is repeated. The digital image signal recording apparatus in which a digital image signal is recorded in the form of a compressed digital image signal uses an even rounding circuit as a device for rounding a signal calculated result. The even rounding circuit includes an added value generating circuit (104) for generating an added value to be added to an input digital signal at its low-order bits to be rounded-off, an adder (102) for adding the added value to the input digital signal, and a circuit (106) for omitting the low-order bits of an added result.

REFERENCES:
patent: 5038209 (1991-08-01), Hang
patent: 5218650 (1993-06-01), Blonstein et al.
patent: 5477397 (1995-12-01), Naiomballey et al.

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