Method of automatically measuring the horizontal scan frequency

Details Method of automatically measuring the horizontal scan frequency Method of automatically measuring the horizontal scan frequency

1997-09-17

2000-01-18

Kostak, Victor R.

Television

Basic receiver with additional function

Multimode

348531, 348194, H04N 508, H04N 504, H04N 701

Patent

active

RE0365084

ABSTRACT:
A method of automatically measuring the horizontal scan frequency of a composite synchronism signal, comprising horizontal synchronization impulses at line frequency, consists of first performing a count of a number of impulses having a repeat frequency higher than said line frequency, as intervening between two successive impulses at line frequency.
The count value, corresponding to said number of impulses, is stored to obtain the line frequency of the signal, and thereafter, a series of down counts is effected, as initiated at predetermined times, until a change of frequency of the signal is detected.

REFERENCES:
patent: 4353091 (1982-10-01), Hoppe
patent: 4402011 (1983-08-01), Newton
patent: 4561021 (1985-12-01), Abe
patent: 4672449 (1987-06-01), Kraus et al.
patent: 4675734 (1987-06-01), Widom
patent: 4769704 (1988-09-01), Hirai et al.
patent: 4792852 (1988-12-01), Narusawa
patent: 4812906 (1989-03-01), Wolber
patent: 4954893 (1990-09-01), Urakami
patent: 4999708 (1991-03-01), Aoki et al.
patent: 5003392 (1991-03-01), Wischermann

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