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Missing vehicle detection system by using a car audio system

  • US 6,023,219 A
  • Filed: 08/07/1998
  • Issued: 02/08/2000
  • Est. Priority Date: 08/08/1997
  • Status: Expired due to Fees
First Claim
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1. A car audio for transmitting a missing vehicle signal, the car audio comprising:

  • a keyboard having a plurality of keys and for generating a key signal corresponding to one of the plurality of keys which is selected;

    a radio part for receiving a broadcasting signal and producing a first audio signal which is included in the broadcasting signal;

    a cassette deck part for reproducing a second audio signal which is recorded on a cassette tape;

    an audio part for driving at least one speaker according to either the first audio signal or the second audio signal;

    a memory for storing a password and a license plate number;

    a transmission part for generating a missing vehicle signal on the basis of the license plate number and for transmitting the missing vehicle signal through a transmission antenna;

    a display for displaying messages; and

    a control part for controlling each of the radio part, the cassette deck part, the audio part, the transmission part, and the display in response to at least one key signal generated from the keyboard, the control part for determining whether the car audio is initiated based on an inputting of power to the car audio,wherein the control part causes the display to display a message requesting to input the password and causes the audio part to mute outputting of an audio sound when the control part determines that the car audio is initiated,wherein the control part causes the audio part to output the audio sound and determines whether the key signals are identical with the password stored in the memory when key signals are inputted from the keyboard,wherein the control part causes the transmission part to transmit the missing vehicle signal when the key signals are different from the password stored in the memory.

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