DE2818957

A television signal determination circuit is associated with an automatic tuning system, which automatically tunes a television set to local channels, in order to determine whether received signals are desired television signals. The television signal determination circuit comprises a first counter...

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Main Authors MINOURA, NABUO, OHTAWARA, TOCHIGI, JP, ABUMI, TAKAO, YAITA, TOCHIGI, JP, NAKAI, KAZUHIRO, IKOMA, NARA, JP, MATSUMURA, ISAO, YOSHINAGA, YASUKAZU
Format Patent
LanguageEnglish
Published 01.12.1983
Subjects
BASIC ELECTRONIC CIRCUITRY
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
SELECTING RESONANT CIRCUITS
TUNING RESONANT CIRCUITS
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Summary:A television signal determination circuit is associated with an automatic tuning system, which automatically tunes a television set to local channels, in order to determine whether received signals are desired television signals. The television signal determination circuit comprises a first counter means for counting received synchronizing signals for a predetermined period of time, a second counter means for counting reference clock signals for the predetermined period of time, and a determination means for determining whether the synchronizing signals are received by a predetermined number within the predetermined period of time by comparing output signals from the first and second counter means.
Bibliography:Application Number: DE19782818957