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Vehicle on board television system

  • US 5,541,572 A
  • Filed: 11/23/1993
  • Issued: 07/30/1996
  • Est. Priority Date: 11/25/1992
  • Status: Expired due to Term
First Claim
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1. An onboard vehicular television device for a vehicle, the vehicle including a switch indicating a parking state of the vehicle and an accessory power supply, the device comprising:

  • a timer circuit;

    a display screen; and

    a controller;

    wherein an image display condition of said display screen is switched such that the display screen displays normal images in response to an image display switching signal transmitted from said controller,wherein the controller receives a first signal from the switch indicating the parking state of the vehicle, a second signal indicating an activation of the accessory power supply, and a third signal generated by the timer circuit, andwherein said controller generates the image display switching signal only when the first signal from said switch indicates that said vehicle is in said parking state, said second signal from said accessory power supply indicates that said accessory power supply has been activated, and said third signal from said timer circuit indicates that a predetermined time period has expired since a previous deactivation of said accessory power supply.

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