Tape address synchronizing apparatus for video tape recorder

Details Tape address synchronizing apparatus for video tape recorder Tape address synchronizing apparatus for video tape recorder

1984-05-22

1986-05-06

McElheny, Jr., Donald

Dynamic magnetic information storage or retrieval

Record editing

360 73, H04N 5782

Patent

active

045875740

ABSTRACT:
An apparatus for synchronizing the playback of magnetic tape, use in a VTR, to a reference signal. Reference addresses which are synchronized to the reference signal and tape addresses which are derived from and correspond to video frames located on the tape are generated. The playback speed of the tape is controlled by a capstan servo to select a speed at which the tape addresses and the reference addresses are synchronized. Each tape section corresponding to a single tape address is further subdivided into auxiliary segments which are identified by an auxiliary address. After a reference address and a tape address have been synchronized, the auxiliary address is compared against a predetermined value and the tape is momentarily accelerated or decelerated to further align the tape to the reference signal.

REFERENCES:
patent: 4282552 (1981-08-01), Tachi et al.
patent: 4322747 (1982-03-01), Dischert et al.
patent: 4466029 (1984-08-01), Tanaka
patent: 4488278 (1984-12-01), Dieterich

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