COMMUNICATION SYSTEM FOR VEHICLE

• US 20090009303A1
• Filed: 06/26/2008
• Published: 01/08/2009
• Est. Priority Date: 07/05/2007
• Status: Abandoned Application

• Current Assignee: Aisin Seiki Co., Ltd. (Aisin Corp.)
• Original Assignee: Aisin Seiki Co., Ltd. (Aisin Corp.)
• Inventors: Kato, Manabu, Fujioka, Eiji
• Application Number:
  US12/146,878
• Publication Number:
  US 20090009303A1
• Time in Patent Office: Days
• US Class Current: 340/426.360
• CPC Class Codes: B60C 23/0408 transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
• CPC Class Codes: B60R 25/245 where the antenna reception area plays a role

Abstract

A communication system for a vehicle includes a portable identification device including a portion for receiving an interrogation signal and a portion for transmitting an indication indicative signal responsive to the interrogation signal, multiple tire sensor devices each of which includes a portion for receiving an initiation signal and a portion for transmitting a condition indicative signal responsive to the initiation signal, multiple transmitting devices each of which emits the interrogation signal and the initiation signal for different conditions within a communication area, a receiving device for receiving the indication indicative signal and the condition indicative signal, and a central controller for unlocking a door lock device when the portable identification device is determined to be in an overlapped area based on a condition of the portable identification device, the overlapped area being defined between two adjacent communication areas and in which the door lock device is involved.

Claims

1. A communication system for a vehicle, comprising:

a portable identification device allowing keyless entry into the vehicle, including means for receiving an interrogation signal and means for transmitting an indication indicative signal responsive to the interrogation signal;

a plurality of tire sensor devices, each of the tire sensor devices serving for providing information regarding a condition at a tire of the vehicle, each of the tire sensor devices including means for receiving an initiation signal and means for transmitting a condition indicative signal responsive to the initiation signal;

a plurality of transmitting devices provided adjacent to the respective tire sensor devices, each of the transmitting devices emitting the interrogation signal and the initiation signal for different conditions within a communication area;

a receiving device for receiving the indication indicative signal from the portable identification device and the condition indicative signal from each of the tire sensor devices; and

a central controller for unlocking a door lock device when the portable identification device is determined to be in an overlapped area based on a condition of the portable identification device, the overlapped area being defined between two adjacent communication areas and in which the door lock device is involved.

2. The communication system according to claim 1, wherein the condition of the portable identification device is that the portable identification device transmits the indication indicative signal within predetermined time duration.

3. The communication system according to claim 1, wherein the adjacent communication areas are reduced to delete the overlapped area therebetween.

4. The communication system according to claim 3, wherein the reduced communication area is defined to include only one tire sensor device.

5. The communication system according to claim 1, further comprising another door lock device located at a rear portion of the vehicle, wherein the another door lock device falls in an overlapped area when the two adjacent communication areas are in a width direction of the vehicle.