Dual source audio apparatus with photosensor for detecting a rec

Dynamic information storage or retrieval – Combined independent audio systems – Radio

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Details

369 10, H04B 120

Patent

active

051309610

ABSTRACT:
An audio apparatus incorporating a CD player or a cassette tape deck and a radio receiver as integral audio components, includes a photosensor; a means for detecting an operating state of each audio source; and a drive mode switching means for automatically changing the photosensor to a continuous active mode or to an intermittent active mode according to a detection output of the source detecting means. When the CD or cassette tape is inserted, the active source is automatically switched to the corresponding CD player or cassette tape deck. Further, the photosensor is placed in the continuous active mode to eliminate noise generation when a source other than the CD or cassette tape is in operation. It is switched to the intermittent active mode to reduce power consumption when none of the sources is in operation.

REFERENCES:
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patent: 3646278 (1972-02-01), Panizzi
patent: 3821489 (1974-06-01), Kocubej
patent: 4149043 (1979-04-01), Itoh et al.
patent: 4389716 (1983-06-01), Pearson
patent: 4627044 (1986-12-01), Takahashi et al.
patent: 4995027 (1991-02-01), Aoyagi et al.

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