Variable-speed playback apparatus for digital video signals

Details Variable-speed playback apparatus for digital video signals Variable-speed playback apparatus for digital video signals

1995-10-12

1999-07-27

Faber, Alan

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Synchronizing moving-head moving-record recorders

360 7713, 360 7309, 386 79, 386 80, G11B 2104

Patent

active

059300639

ABSTRACT:
A variable-speed playback apparatus and method for reproducing digital video signals recorded in tracks of a recording medium, such as a magnetic tape. A track number and a synchronization block number may be obtained from the magnetic tape and utilized to form a trace phase. Such trace phase is compared to a reference trace phase so as to obtain a phase error which is used to control the tape speed. As a result, the tape traveling speed may be controlled with a relatively high accuracy.

REFERENCES:
patent: 4811130 (1989-03-01), Takayama
patent: 5057949 (1991-10-01), Suga
patent: 5262905 (1993-11-01), Takagi et al.
patent: 5299073 (1994-03-01), Dorricott
patent: 5477398 (1995-12-01), Ichikawa et al.
patent: 5490017 (1996-02-01), Nakamura et al.
patent: 5532835 (1996-07-01), Nakagaki et al.

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