Time base correction apparatus

Details Time base correction apparatus Time base correction apparatus

1980-10-01

1982-08-17

Konick, Bernard

Dynamic magnetic information storage or retrieval

Monitoring or testing the progress of recording

H04N 5785

Patent

active

043452795

ABSTRACT:
A time base correction apparatus comprising: a delay means (10) for providing a first signal (E3) as an input signal (E1) delay by a given time in accordance with a frequency of a clock signal (E2); a comparator (16) which compares a signal component (E4) contained in the first signal (E3) with a given comparison signal (E5) thereby to produce a second signal (E7) with a level corresponding to a phase difference between the signal component (E4) and the given comparison signal (E5); a VCO (12) for producing the clock signal (E2) depending on the level of the second signal (E7); and a compensator (20) which provides an output signal (E8) obtained by compensating variation components of the first signal (E3) so that the output signal (E8) exactly corresponds to the input signal (E1), depending on the first signal (E3) and the second signal (E7).

REFERENCES:
patent: 3767849 (1973-10-01), Wessels
patent: 4228460 (1980-10-01), Rotter
patent: 4300172 (1981-11-01), Sochor et al.

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