Automobile anti-theft system

A vehicle security system for a vehicle having an electrical system and an ignition system which includes an ignition switch comprising a receiver/logic unit mounted in the vehicle and connected to the electrical system thereof;

• and an associated transmitter unit adapted to be carried by an authorized operator and, when operated, to transmit a uniquely coded signal which is received and recognized by said receiver/logic unit;
• said receiver/logic unit including anti-theft means, means for enabling the operation of said anti-theft means responsive to a first receipt and recognition of said coded signal and for disabling the operation of said anti-theft means responsive to a second receipt and recognition of said coded signal, and means responsive to operation of said ignition switch for preventing the enabling of the operation of said anti-theft means while the ignition system of the vehicle is on.

A vehicle security system comprising a receiver/logic unit mounted in the vehicle and connected to the electrical system thereof;

• and an associated transmitter unit adapted to be carried by an authorized operator and, when operated, to transmit a uniquely coded signal which is received and recognized by said receiver/logic unit;
• said receiver/logic unit including means for inhibiting the operation of the vehicle, means for enabling the operation of said inhibiting means responsive to a first receipt and recognition of said coded signal and for disabling the operation of said inhibiting means responsive to a second receipt and recognition of said coded signal, and means enabled responsive to a first receipt and recognition of said coded signal for detecting an attempt to gain access to the vehicle prior to a second receipt and recognition of said coded signal, and in response thereto for generating an alarm signal;
• said detecting means including means coupled to a pair of speakers in the vehicle, and means for mixing the outputs thereof to sense the average vibrations therein.

A vehicle security system comprising a receiver/logic unit mounted in the vehicle and connected to the electrical system thereof;

• and an associated transmitter unit adapted to be carried by an authorized operator and, when operated, to transmit a uniquely coded signal which is received and recognized by said receiver/logic unit;
• said receiver/logic unit including anti-theft means, means for enabling the operation of said anti-theft means responsive to a first receipt and recognition of said coded signal and for disabling the operation of said anti-theft means responsive to a second receipt and recognition of said coded signal, means responsive to a second receipt and recognition of said coded signal while said anti-theft means is enabled for controlling the turning on of at least one light, and means for turning off said at least one light when the vehicle ignition system is turned on.

A vehicle security system comprising a receiver/logic unit mounted in the vehicle connected to the electrical system thereof;

• and an associated transmitter unit adapted to be carried by an authorized operator and, when operated, to transmit a uniquely coded signal which is received and recognized by said receiver/logic unit;
• said receiver/logic unit including anti-theft means, means for enabling the operation of said anti-theft means responsive to a first receipt and recognition of said coded signal and for disabling the operation of said anti-theft means responsive to a second receipt and recognition of said coded signal, means operable in two distinct modes, and means operative in response to the ignition system of the vehicle being turned on and then turned off within a predetermined time interval for changing the mode of operation of said two-mode operable means.

A vehicle security system comprising a receiver/logic unit mounted in the vehicle and connected to the electrical system thereof;

• and an associated transmitter unit adapted to be carried by an authorized operator and, when operated, to transmit a uniquely coded signal which is received and recognized by said receiver/logic unit;
• said receiver/logic unit including means for inhibiting the operation of the vehicle, means for enabling the operation of said inhibiting means responsive to a first receipt and recognition of said coded signal and for disabling the operation of said inhibiting means responsive to a second receipt and recognition of said coded signal, means for providing an aural verifying signal responsive to a second receipt and recognition of said coded signal, means enabled responsive to a first receipt and recognition of said coded signal for detecting an attempt to gain access to the vehicle prior to a second receipt and recognition of said coded signal, and in response thereto for generating an alarm signal, and means for selectively disabling the provision of said aural verifying signal without disabling the generation of said alarm signal in response to an unauthorized access attempt.

A vehicle security system comprising a receiver/logic unit mounted in the vehicle and connected to the electrical system thereof;

• and an associated transmitter unit adapted to be carried by an authorized operator and, when operated, to transmit a uniquely coded signal which is received and recognized by said receiver/logic unit;
• said receiver/logic unit including means for inhibiting the operation of the vehicle, means for enabling the operation of said inhibiting means responsive to a first receipt and recognition of said coded signal and for disabling the operation of said inhibiting means responsive to a second receipt and recognition of said coded signal, means for verifying the enablement of said inhibiting means by providing an aural signal responsive to a first receipt and recognition of said coded signal, means enabled responsive to a first receipt and recognition of said coded signal for detecting an attempt to gain access to the vehicle prior to a second receipt and recognition of said coded signal, and in response thereto for generating an alarm signal, and means for selectively disabling the provision of said aural verifying signal without disabling the generation of said alarm signal in response to an access attempt.

A vehicle security system comprising a receiver/logic unit mounted in the vehicle and connected to the electrical system thereof;

• and an associated transmitter unit adapted to be carried by an authorized operator and, when operated, to transmit a uniquely coded signal which is received and recognized by said receiver/logic unit;
• said receiver/logic unit including anti-theft means, means for enabling the operation of said anti-theft means responsive to a first receipt and recognition of said coded signal and for disabling the operation of said anti-theft means responsive to a second receipt and recognition of said coded signal, and means for controlling warning beeping of the automobile horn responsive to the opening of an automobile door following a second receipt and recognition of said coded signal if between the first and second receipts and recognitions of said coded signal an attempt was made to gain access to the vehicle.

A vehicle security system comprising a receiver/logic unit mounted in the vehicle and connected to the electrical system thereof;

• and an associated transmitter unit adapted to be carried by an authorized operator and, when operated, to transmit a uniquely coded signal which is received and recognized by said receiver/logic unit;
• said receiver/logic unit including anti-theft means, means for enabling the operation of said anti-theft means responsive to a first receipt and recognition of said coded signal and for disabling the operation of said anti-theft means responsive to a second receipt and recognition of said coded signal, and detecting means enabled responsive to a first receipt and recognition of said coded signal for detecting an attempt to gain access to the vehicle prior to a second receipt and recognition of said coded signal, and in response thereto for controlling the generation of an alarm signal;
• said detecting means including means coupled to multiple speakers in the vehicle for mixing the outputs thereof to sense the average vibrations therein.