Communications: electrical – Land vehicle alarms or indicators – Of burglary or unauthorized use
Patent
1998-08-07
2000-02-08
Crosland, Donnie L.
Communications: electrical
Land vehicle alarms or indicators
Of burglary or unauthorized use
3404255, 340539, 34082531, 307 102, 307 104, B60R 2510, G08B 1300
Patent
active
060232196
ABSTRACT:
A system which can detect a vehicle that is missing or stolen on the basis of a missing vehicle signal which is transmitted from a car audio system in which a transmission apparatus is installed for transmitting the missing vehicle signal. When the car audio is initiated, a transmission control part causes a first display to show a message requesting to input a password and causes an audio part to mute an outputting of the audio sound. When the password is inputted by a keyboard, the control part causes an audio part to stop muting the audio sound, and causes a transmission part to transmit the missing vehicle signal when the password inputted from the keyboard is different from a password stored in a first memory. A receiving apparatus includes an alarm generation part for ringing an alarm sound, a receiving part for receiving the missing vehicle signal, a demodulation part for demodulating the missing vehicle signal in order to detect data included in the missing vehicle signal, a modem for transmitting the data through a telephone line, and a receiving control part for controlling the alarm generation part, the display, and the modem according to whether the receiving part receives the missing vehicle signal or not.
REFERENCES:
patent: 4683462 (1987-07-01), Takeda et al.
patent: 5003317 (1991-03-01), Gray et al.
patent: 5334974 (1994-08-01), Simms et al.
patent: 5418537 (1995-05-01), Bird
Crosland Donnie L.
Daewoo Electronics Co. Ltd.
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