Video synchronizer with velocity compensation

Details Video synchronizer with velocity compensation Video synchronizer with velocity compensation

1977-02-17

1978-07-18

Richardson, Robert L.

Dynamic magnetic information storage or retrieval

Monitoring or testing the progress of recording

H04N 578

Patent

active

041019393

ABSTRACT:
A velocity compensator arrangement for a synchronizer which includes an input oscillator, main store and output oscillator in which the controlling voltage of the input oscillator is sampled during one line and compared with the controlling voltage for the next line. Any voltage difference is converted into digital form and this is stored in a digital store until the corresponding line is read out from the main store. The phase of the output oscillator is shifted in dependence on the voltage difference held in the store. This store may comprise part of the main store or be an independent store.

REFERENCES:
patent: 3971063 (1976-07-01), Michael et al.

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