Vehicle anti-theft apparatus

• US 20050151618A1
• Filed: 11/17/2004
• Published: 07/14/2005
• Est. Priority Date: 11/18/2003
• Status: Active Grant

• Current Assignee: Kabushiki Kaisha Tokai RIKA Denki Seisakusho
• Original Assignee: Kabushiki Kaisha Tokai RIKA Denki Seisakusho
• Inventors: Takamura, Kimitake, Inagaki, Osamu, Shibagaki, Yuuji
• Granted Patent: US 7,268,665 B2
• Time in Patent Office: Days
• US Class Current: 340/5.230
• CPC Class Codes: H04B 1/3805 with built-in auxiliary receivers

Abstract

An anti-theft apparatus including a first memory, which stores an ID code registered in a portable device, a GPS receiver, which determines the present position of the vehicle, a second memory, which stores a predetermined registered position, and a control circuit, which enables registration of the ID code to the first memory when the present position of the vehicle matches the registered position stored in the second memory.

Claims

1. A vehicle anti-theft apparatus for use with a portable device having an ID code to prevent theft of a vehicle, the apparatus comprising:

a first recording circuit for registering the ID code of the portable device;

a position determination circuit for determining a present position of the vehicle;

a second recording circuit for registering a predetermined registered position; and

a control circuit for enabling registration of the ID code of the portable device in the first recording circuit when the present position of the vehicle matches the registered position.

2. The apparatus according to claim 1, wherein the control circuit enables the vehicle to be driven when the ID code of the portable device matches the ID code registered in the first recording circuit.

3. The apparatus according to claim 1, wherein the position determination circuit determines the present position of the vehicle based on radio wave signals from global positioning system satellites.

4. The apparatus according to claim 1, wherein the ID code of the portable device has a predetermined format, and the vehicle has an ID format, the control circuit registering the ID code of the portable device in the first recording circuit when the present position of the vehicle matches the registered position recorded in the second recording circuit while at least one of conditions including accomplishment of user verification and matching of the ID code format of the portable device and the ID format of the vehicle is satisfied.

5. The apparatus according to claim 4, wherein the control circuit performs a first check for checking whether the present position of the vehicle matches the registered position and a second check for checking whether the ID code format of the portable device and the ID format of the vehicle match, the control circuit:

performing either one of the first check and the second check when the user verification is accomplished;

performing the other one of the first check and the second check when the positions or formats match in the either one of the first check and the second check; and

enabling the registration of the ID code of the portable device to the first recording circuit when the positions or formats match in either one of the first check and the second check.

6. A vehicle anti-theft apparatus for use with a portable device having an ID code to prevent theft of a vehicle, the apparatus comprising:

a first memory for storing the ID code of the portable device;

a position determination circuit for determining a present position of the vehicle;

a second memory for storing a predetermined position; and

a control circuit for enabling storing of the ID code of the portable device in the first memory when the present position of the vehicle matches the predetermined position.

7. The apparatus according to claim 6, wherein the control circuit enables the vehicle to be driven when the ID code of the portable device matches the ID code stored in the first memory.

8. The apparatus according to claim 6, wherein the position determination circuit includes a signal processor of a satellite-based navigation system.

9. The apparatus according to claim 6, wherein the portable device transmits the ID code of the portable device in a predetermined format, the vehicle has an ID format, and the control circuit receives the ID code of the portable device, the control circuit storing the ID code of the portable device in the first memory when the present position of the vehicle matches the predetermined position recorded in the second memory while at least one of conditions including accomplishment of user verification and matching of the ID code format of the portable device and the ID format of the vehicle is satisfied.

10. The apparatus according to claim 9, wherein the control circuit performs a first check for checking whether the present position of the vehicle matches the predetermined position and a second check for checking whether the ID code format of the portable device and the ID format of the vehicle match, the control circuit:

performing either one of the first check and the second check when the user verification is accomplished;

performing the other one of the first check and the second check when the positions or formats match in the either one of the first check and the second check; and

enabling the storing of the ID code of the portable device in the first memory when the positions or formats match in either one of the first check and the second check.

11. A method for preventing theft of a vehicle, the method comprising:

providing a portable device having an ID code;

providing an apparatus including a first recording circuit for storing the ID code of the portable device and a second recording circuit for storing a predetermined registered position;

installing the apparatus in the vehicle;

the apparatus determining the present position of the vehicle; and

the apparatus enabling registration of the ID code of the portable device in the first recording circuit when the present position of the vehicle matches the registered position.

12. The method according to claim 11, further comprising:

enabling the vehicle to be driven when the ID code of the portable device matches the ID code registered in the first recording circuit.

13. The method according to claim 11, wherein said determining the present position includes determining the present position of the vehicle based on radio wave signals from global positioning system satellites.

14. The method according to claim 11, wherein the ID code of the portable device has a predetermined format, and the vehicle has an ID format, said enabling registration of the ID code of the portable being performed in addition to when the positions match when at least one of conditions including accomplishment of user verification and matching of the ID code format of the portable device and the ID format of the vehicle is satisfied.