Apparatus and method for controlling tracking in slow mode playb

Details Apparatus and method for controlling tracking in slow mode playb Apparatus and method for controlling tracking in slow mode playb

1996-10-30

1999-03-23

Sniezek, Andrew L.

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

386 78, 386 76, H04N 591

Patent

active

058871136

ABSTRACT:
An apparatus and a method of controlling tracking in slow mode playback. The tracking control apparatus comprises a video head for detecting a video signal recorded on a magnetic tape, a video signal processing circuit for detecting envelopes of the detected video signal from the video head, a microcomputer for outputting servo data and a slow tracking signal in response to the detected envelopes from the video signal processing circuit, a servo device for outputting a capstan phase control signal in response to the servo data from the microcomputer, and a capstan motor for driving a capstan in response to a signal into which the capstan phase control signal from the servo device and the slow tracking signal from the microcomputer are combined.

REFERENCES:
patent: 4737864 (1988-04-01), Sekiya et al.
patent: 4912571 (1990-03-01), Sekiya et al.
patent: 5031051 (1991-07-01), Kim
patent: 5107381 (1992-04-01), Mitsuhashi et al.
patent: 5289323 (1994-02-01), Traka et al.
patent: 5384642 (1995-01-01), Sim
Japanes Patent Abstract vol. 14 No. 51, "Magnetic Recording and Reproducing Device", Jan. 30, 1990.

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