Electrical audio signal processing systems and devices – Vehicle
Patent
1990-03-09
1992-04-28
Isen, Forester W.
Electrical audio signal processing systems and devices
Vehicle
455352, 4551511, H04B 100
Patent
active
051094207
ABSTRACT:
A car audio device of the present invention is divided into at least two parts comprising a body part and an operational part which is detachable from the body part. The body part has a system controller, and the operational part has a key input controller for outputting an operation signal to the system controller. The body part and the operational part are detachably connected to each other by a mechanical mechanism, and the signal lines for these parts are electrically connected to each other through detachable contact terminals. The operational part has a gate part which selects the signal from either the key input controller or the remote control receiver. The signal selected is transmitted to the system controller through a common transmission line used by the key input controller and the remote control receiver in common.
REFERENCES:
patent: 4227259 (1980-10-01), Mogi
patent: 4347510 (1982-08-01), Ishigaki et al.
patent: 4633514 (1986-12-01), Firnoff et al.
patent: 4751581 (1988-06-01), Ishiguro et al.
Isen Forester W.
Pioneer Electronic Corporation
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