# US 2013/0158746 A1 · System and method for self-detecting vehicle theft

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- Number: US 2013/0158746 A1
- Document ID: US20130158746A1
- Status: Published application
- Kind: A1
- Application number: 13/767,977
- Filed: 2013-02-15
- Published: 2013-06-20
- Earliest claimed: 2011-04-26
- Assignees: Continental Automotive Systems, Inc.
- Inventors: Shafer Seymour; Peter Saladin
- Web page: https://patentgrep.com/patent/US20130158746A1

## CPC

- B60R 25/01: operating on vehicle systems or fittings, e.g. on doors, seats or windscreens
- B60R 25/1025: {preventing jamming or interference of said signal}
- H04K 3/22: {including jamming detection and monitoring}
- H04K 3/222: {wherein jamming detection includes detecting the absence or impossibility of intelligible communication on at least one channel}
- H04K 3/226: {Selection of non-jammed channel for communication (spectrum sharing arrangements H04W16/14; selection of wireless resources by user or terminal H04W72/02)}
- H04K 3/88: {related to allowing or preventing alarm transmission}
- H04K 2203/22: for communication related to vehicles
- B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- H04K: SECRET COMMUNICATION; JAMMING OF COMMUNICATION

## Abstract

A system and method for self-detecting vehicle theft is provided that includes a first antenna and a second antenna, both located on a vehicle. The first antenna transmits the signal and the second antenna receives the signal. A monitoring module in communication with the second antenna is configured to determine whether the signal has changed. A vehicle security system is configured to activate based on a change in the signal.

## Claims

### Claim 1

A method for self-detecting vehicle theft in a vehicle, comprising the following steps:
transmitting a signal from a first location on the vehicle;
attempting to receive the signal at a second location on the vehicle;
determining whether the signal was changed; and
activating a vehicle security system based on the change in the signal.

### Claim 2 (depends on 1)

The method of claim 1, further comprising:
verifying whether the signal is being transmitted from a transmission source;
wherein activating the vehicle security system is based on both the change in the signal and the verification of whether the signal is being transmitted from the transmission source.

### Claim 3 (depends on 1)

The method of claim 1, wherein determining whether the signal has changed comprises detecting whether the signal reception is interrupted, and wherein activating the vehicle security system is further based on whether the signal reception is interrupted.

### Claim 4 (depends on 1)

The method of claim 1, wherein determining whether the signal has changed comprises determining whether a measured magnitude of the signal is lower than a predetermined baseline magnitude, wherein activating the vehicle security system is further based on whether the measured magnitude of the signal is lower than the predetermined baseline magnitude.

### Claim 5 (depends on 1)

The method of claim 1, wherein determining whether the signal has changed comprises determining whether a measured magnitude of the signal is higher than a predetermined baseline magnitude, wherein activating the vehicle security system is further based on whether the measured magnitude of the signal is higher than the predetermined baseline magnitude.

### Claim 6 (depends on 1)

The method of claim 1, further comprising:
inserting a pattern into the signal at the transmission source; and
detecting the pattern in the signal, wherein activating the vehicle security system is further based on the detection of the pattern in the signal.

### Claim 7 (depends on 6)

The method of claim 6, wherein the pattern comprises a cyclic pattern of transmitting the signal and not transmitting the signal.

### Claim 8 (depends on 1)

The method of claim 1, further comprising:
monitoring data in the signal;
determining authenticity of the signal based on the data, wherein activating the vehicle security system is further based on the authenticity of the signal.

### Claim at position 9

9-19. (canceled)

### Claim 20

In a computer readable storage medium having stored therein instructions executable by a programmed processor for determining if a vehicle is stolen, the storage medium comprising instructions for:
determining whether a received signal was changed at the transmission source and whether the received signal was changed after transmission; and
activating a vehicle security device if the received signal was changed.

### Claim 21

(canceled)