Vertical sync independent digital skew servo

Details Vertical sync independent digital skew servo Vertical sync independent digital skew servo

1980-06-20

1983-01-11

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Synchronizing moving-head moving-record recorders

360 76, G11B 2102, G11B 543

Patent

active

043684920

ABSTRACT:
To continuously correct for tape stretching ("skew"), the phase of timed video information on the tape is compared with a reference at two different times, thereby forming two comparison signals. The two comparison signals are subtracted from each other to form an error signal, which is used to continuously correct the tape length variations.

REFERENCES:
patent: 3686469 (1972-08-01), Clark et al.
patent: 3849671 (1974-11-01), Molack
patent: 4020422 (1977-04-01), Underhill
patent: 4206485 (1980-06-01), Sakamoto
patent: 4259698 (1981-03-01), Takada
patent: 4278924 (1981-07-01), Mawatam et al.

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