Television – Basic receiver with additional function – Multimode
Patent
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.
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Betti Giorgio
Gornati Silvano
Sacchi Fabrizio
Vai Gianfranco
Zuffada Maurizio
Galanthay Theodore E.
Jorgenson Lisa K.
Kostak Victor R.
SGS--Thomson Microelectronics S.r.l.
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