Method and circuit for producing synchronous control signals in

Details Method and circuit for producing synchronous control signals in Method and circuit for producing synchronous control signals in

1996-10-09

1999-06-08

Garber, Wendy

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

386 1, 386 90, 360 64, 360 75, H04N 5926, H04N 752

Patent

active

059110341

ABSTRACT:
In order to produce synchronous control signals of a video recorder, in particular of a digital video recorder, a position pulse of the scanner motor, which coincides with the beginning of the video frame, is used as time zero point. Time markers in which changes in the control signals take place are calculated starting from this time zero point. These time markers and the bit patterns occurring at these time markers are stored as data words in a data field and, for corresponding time markers, the corresponding data word is output in parallel, that is to say synchronously. A realization is possible by means of a microcontroller and a controllable output memory, the microcontroller containing the functions of capture register, timer, calculation unit and comparator.

REFERENCES:
patent: 4843493 (1989-06-01), Furuhata et al.
patent: 4935826 (1990-06-01), Sin et al.
patent: 4959733 (1990-09-01), Miura et al.
patent: 5142420 (1992-08-01), Tanaka et al.
patent: 5357382 (1994-10-01), Lee
patent: 5448367 (1995-09-01), Park et al.
patent: 5629812 (1997-05-01), Kleinhuis
patent: 5745314 (1998-04-01), Ikeda et al.

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