Timing error compensator

Details Timing error compensator Timing error compensator

1975-03-03

1977-10-11

Martin, John C.

Facsimile and static presentation processing

Static presentation processing

Attribute control

360 36, 340347DA, H04N 5785, H03K 1302

Patent

active

040539261

ABSTRACT:
A time displacement adjustment device compensates time base errors that progressively cumulate in a time varying signal having a synchronizing information component from which the signal time base can be determined. Periodically, the synchronizing component is sampled and a representation thereof continuously generated with the component's timing relationship to the signal retained. Each continuously generated representation and the succeeding sample of the synchronizing component are compared to determine the time base error that progressively occurs in the signal between the successive samples of the synchronizing component. That signal is expanded or compressed accordingly to correct the erroneous timing.

REFERENCES:
patent: 3609560 (1971-09-01), Greenberg
patent: 3659040 (1972-04-01), Fujita et al.
patent: 3746800 (1973-07-01), Stuart
patent: 3754098 (1973-08-01), Abramson et al.
patent: 3761646 (1973-09-01), Beauviala
patent: 3855617 (1974-12-01), Jankowski et al.
patent: 3860952 (1975-01-01), Tallent et al.
patent: 3883685 (1975-05-01), Yumdee et al.
patent: 3887941 (1975-06-01), Dann et al.
patent: 3931638 (1976-01-01), Lentz et al.
patent: 3982277 (1976-09-01), Naylor
"New Technique for Time-Base Stabilization of Video Recorders", IEEE Trans., vol. BC-17, No. 1, C. H. Coleman, Mar. 1971, pp. 29-36 inc.
Proceedings of the Conference on Video and Data, "Digital Time Corr. of VTR Color T.V. Sigs.", by S. M. Edwardson, July, 1973, pp. 27-39 inc.

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