Automotive multiple media system
First Claim
1. A multiple media system comprising a head unit comprising a radio tuner, at least one of a cassette player and a CD player, a display, manual controls, a front amplifier, a rear amplifier, and a master microprocessor, a pair of front speakers connected to said front amplifier, a pair of rear speakers connected to said rear amplifier, a bus connected to said master microprocessor and comprising at least one power line, at least one ground line, left and right audio signal out lines, left and right audio signal in lines, and a data read/write line, said bus extending from said head unit in a cable ending at a plug, and at least one module connected to said head unit by said cable, said bus extending through each said module via a pair of opposed plugs, each said plug of each said module being mateable with one of said plugs of a further said module, one of said plugs of each said module being mateable with said plug on said cable.
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Accused Products
Abstract
A head unit in an automotive audio system has a master microprocessor connected to a bus for serial additional of modules for expanding the system. The bus is continuous through each module, and provides both inputs and outputs to and from the head unit. Modules may include an RF remote control module, an RF headphones module, and an A/V source selector which permits rear seat occupants to choose and control a video source such as a VCR or a game.
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Citations
15 Claims
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1. A multiple media system comprising
a head unit comprising a radio tuner, at least one of a cassette player and a CD player, a display, manual controls, a front amplifier, a rear amplifier, and a master microprocessor, a pair of front speakers connected to said front amplifier, a pair of rear speakers connected to said rear amplifier, a bus connected to said master microprocessor and comprising at least one power line, at least one ground line, left and right audio signal out lines, left and right audio signal in lines, and a data read/write line, said bus extending from said head unit in a cable ending at a plug, and at least one module connected to said head unit by said cable, said bus extending through each said module via a pair of opposed plugs, each said plug of each said module being mateable with one of said plugs of a further said module, one of said plugs of each said module being mateable with said plug on said cable.
Specification