Apparatus for modifying the time base of signals

Details Apparatus for modifying the time base of signals Apparatus for modifying the time base of signals

1974-10-29

1976-03-30

Cardillo, Jr., Raymond F.

Dynamic magnetic information storage or retrieval

Monitoring or testing the progress of recording

H04N 5795

Patent

active

039478742

ABSTRACT:
Time base instability of signals in a train thereof is corrected by use of analog shift registers. As employed in the correction of time base instability of video signals, plural analog shift registers are used. The same clock rate is used, respectively, to clock video signals into and out of analog shift registers. The clock rate is set so that samples of a video signal which has a normal duration may load all stages of an analog shift register within the duration of the normal signal. Thus, samples of a stretched signal fully load all stages of the analog shift register, the trailing part of such stretched signal being discarded. Conversely, a video signal which has been compressed, although being fully loaded into the analog shift register, loads less than all of the analog shift register stages.

REFERENCES:
patent: 3197739 (1965-07-01), Newman
patent: 3666880 (1972-05-01), Krause
patent: 3749837 (1973-07-01), Doughty
patent: 3761646 (1973-09-01), Beauviala
patent: 3860952 (1975-01-01), Tallent et al.
patent: 3863022 (1975-01-01), Bruch
patent: R25405 (1963-06-01), Witt et al.

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