Electronic volume varying apparatus restricted by muting mode

Details Electronic volume varying apparatus restricted by muting mode Electronic volume varying apparatus restricted by muting mode

1992-05-27

1994-05-31

Hannaher, Constantine

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Electrical modification or sensing of storage medium

381104, 381105, 381107, 381108, H03G 302, G11B 900

Patent

active

053175581

ABSTRACT:
An electronic volume varying apparatus for producing a controlling signal to control an electronic volume in response to pulses from a manually operable pulse generator, wherein it is prevented, when incorporated in a cassette deck or the like, that a listener is surprised with a great sound volume after cancellation of a muting mode. A muting judging section outputs a memory disabling signal when a muting-on signal is supplied thereto, and a memory enabling/disabling device is interposed between a pulse counting device and a memory device of a controlling section and stops its outputting of pulse count data from the pulse counting device to the memory device in response to the memory disabling signal from the muting judging section. A method and apparatus which can accurately detect an input pulse from a manually operable pulse generator as well as a pulse switch which eliminates inadvertent outputting of a pulse are also disclosed.

REFERENCES:
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patent: 4792990 (1988-12-01), Beyers, Jr.
patent: 5010577 (1991-04-01), Sakanishi et al.
patent: 5077799 (1991-12-01), Cotton
patent: 5130665 (1992-07-01), Walden

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