Method and apparatus for compensation of time base errors

Details Method and apparatus for compensation of time base errors Method and apparatus for compensation of time base errors

1978-01-12

1980-10-14

Konick, Bernard

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358177, 358167, 358156, 360 36, 360 37, H04N 576

Patent

active

042284600

ABSTRACT:
Method and apparatus for compensating for variations in the time base of a video signal reproduced in a longitudinal video tape recording system. The signal is passed through a charge-coupled device clocked by a variable rate clock signal to correct for the timing variations. Thereafter, a clamping circuit removes variable voltage offsets introduced by the charge-coupled device, to prevent objectionable horizontal streaking from occurring in the resulting video picture. A clipping circuit removes random noise from the time base pulses of the video signal prior to its passing through the charge-coupled device, whereby the clamping circuit is prevented from creating an objectionable flicker in the resulting video picture.

REFERENCES:
patent: 3102927 (1963-09-01), Dillenburger
patent: 3493675 (1970-02-01), Iwai
patent: 3748386 (1973-07-01), Monney
patent: 3959815 (1976-05-01), Rotter
patent: 4015076 (1977-05-01), Ishiodort

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