Circuit arrangement for an apparatus with a picture and/or sound

Details Circuit arrangement for an apparatus with a picture and/or sound Circuit arrangement for an apparatus with a picture and/or sound

1985-05-06

1987-06-30

Ng, Jin F.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455186, 455194, 455249, H04B 116

Patent

active

046776893

ABSTRACT:
The invention relates to a circuit arrangement for a home-entertainment apparatus which, by means of a memory and a timer, ensures that the apparatus can operate correctly only if a date has been entered. If this is not the case, the timer will disable the apparatus after a specific time interval.

REFERENCES:
patent: 4348696 (1982-09-01), Beier
patent: 4484027 (1984-11-01), Lee et al.
Nakamichi, Mobile Sound System, 2/1983, p. 3.

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