Intermittent driving system

• US 20080197701A1
• Filed: 02/15/2008
• Published: 08/21/2008
• Est. Priority Date: 02/21/2007
• Status: Active Grant

• Current Assignee: Renesas Electronics Corporation
• Original Assignee: NEC Electronics Corporation (Renesas Electronics Corporation)
• Inventors: Fuchigami, Takashi
• Granted Patent: US 7,759,818 B2
• Time in Patent Office: Days
• US Class Current: 307/10.3
• CPC Class Codes: B60R 25/04 operating on the propulsion system, e.g. engine or drive motor
• CPC Class Codes: B60R 25/1018 Alarm systems characterised by features related to the general power supply
• CPC Class Codes: B60R 25/102 a signal being sent to a remote location, e.g. a radio signal being transmitted to a police station, a security company or the owner
• CPC Class Codes: B60R 25/104 characterised by the type of theft warning signal, e.g. visual or audible signals with special characteristics
• CPC Class Codes: B60R 25/20 Means to switch the anti-theft system on or off
• CPC Class Codes: B60R 25/24 using electronic identifiers containing a code not memorised by the user

Abstract

An intermittent driving system includes a control target circuit to determine and notify a switching timing of ON/OFF of a power supply, and a control circuit to send a power supply ON signal for turning on the power supply or a power supply OFF signal for turning off the power supply of the control target circuit based on the switching timing decided by the control target circuit. The control target circuit is an in-vehicle monitoring circuit including a monitoring camera to monitor a in-vehicle and the control target circuit determines the switching timing based on a monitoring result of the monitoring camera.

Claims

1. An intermittent driving system comprising:

a control target circuit to determine and notify a switching timing of ON/OFF of a power supply; and

a control circuit to send a power supply ON signal for turning on the power supply or a power supply OFF signal for turning off of the power supply of the control target circuit based on the switching timing decided by the control target circuit.

2. The intermittent driving system according to claim 1 wherein,

the control target circuit includes an in-vehicle monitoring circuit including a monitoring camera to monitor a in-vehicle and the in-vehicle monitoring circuit determines the switching timing based on an image taken by the monitoring camera.

3. The intermittent driving system according to claim 2 wherein,

the in-vehicle monitoring circuit is started at a certain interval, and upon determination by the in-vehicle monitoring circuit that there is abnormality in the vehicle based on the image taken by the monitoring camera, a next starting time of the in-vehicle monitoring circuit is made shorter than a next starting time in a case where the in-vehicle monitoring circuit determines that the in-vehicle is normal.

4. The intermittent driving system according to claim 3 wherein,

the in-vehicle monitoring circuit determines that a case where a person is detected in the vehicle is abnormal and a case where a person is not detected in the vehicle is normal while the vehicle is stopped and a door is locked.

5. The intermittent driving system according to claim 3 wherein the control target circuit further includes a door lock control circuit to control opening and closing a door based on a door lock signal or a door unlock signal.

6. The intermittent driving system according to claim 3 wherein the control target circuit further includes an immobilizer to determine whether or not identifying information of a key corresponds to identifying information of a vehicle.

7. The intermittent driving system according to claim 4 wherein the control target circuit further includes a door lock control circuit to control opening and closing a door based on a door lock signal or a door unlock signal.

8. The intermittent driving system according to claim 4 wherein the control target circuit further includes an immobilizer to determine whether or not identifying information of a key corresponds to identifying information of a vehicle.

9. The intermittent driving system according to claim 5 wherein the control target circuit further includes an immobilizer to determine whether or not identifying information of a key corresponds to identifying information of a vehicle.

10. The intermittent driving system according to claim 7 wherein the control target circuit further includes an immobilizer to determine whether or not identifying information of a key corresponds to identifying information of a vehicle.

11. The intermittent driving system according to claim 9 wherein,

upon determination by the in-vehicle monitoring circuit that there is abnormality in the vehicle based on the result of taken image, the in-vehicle monitoring circuit sends a power supply ON signal which requests to turn on the power supply of the door lock controlling circuit and/or the immobilizer to the control circuit.

12. The intermittent driving system according to claim 11 further comprising a plurality of control target circuits wherein,

the control circuit includes memories to store a next starting time of the plurality of control target circuits corresponding to the plurality of control target circuits connected to the control circuit respectively.

13. The intermittent driving system according to claim 10 wherein,

Upon determination by the in-vehicle monitoring circuit that there is abnormality in the vehicle based on the result of taken image, the in-vehicle monitoring circuit sends a power supply ON signal which requests to turn on the power supply of the door lock controlling circuit and/or the immobilizer to the control circuit.

14. The intermittent driving system according to claim 13 further comprising a plurality of control target circuits wherein,

the control circuit includes memories to store a next starting time of the plurality of control target circuits corresponding to the plurality of control target circuits connected to the control circuit respectively.