Audio-visual system with two-way communication between devices

Details Audio-visual system with two-way communication between devices Audio-visual system with two-way communication between devices

1994-08-31

1995-05-30

Yusko, Donald J.

Communications: electrical

Continuously variable indicating

With meter reading

341176, 348734, 4551514, G05B 1902, G08C 1912, H04L 1702

Patent

active

054205735

ABSTRACT:
An audiovisual system allows a plurality of audiovisual devices to be interconnected for convenient operation from a single set of function keys. The system includes a first AV device and other connected AV devices connected so as to bidirectionally transfer data. Control data from connected devices are read by a CPU of the first device and written to a RAM memory portion of the first device. When a function key of the first device is operated, a connected device is operated according to the control data read therefrom and stored in the first device. A memory card incorporating control data for the external devices may further be accessed by the first AV device for reading control data for the external devices. A particular function key may control as many functions as there are connected devices in the AV system.

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patent: 5136285 (1992-08-01), Okuyama
patent: 5235328 (1993-08-01), Kurita
Transportation Electronics: Proceedings of the International Congress on Transportation Electronics. Society of Automotive Engineers. Oct. 1986. "Digital LSI: The Key to refining the Automotive Audio System". (Kawata et al.) pp. 99-106.

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