Vehicle information communication system and method having radio transmission checking function
First Claim
1. A vehicle communication system for a vehicle in radio communication with an external station, the system comprising:
- self-diagnosis means for detecting failure self-diagnosis information in the vehicle through a self-diagnosing operation thereof;
radio communication means for transmitting the failure self-diagnosis information to the external station through a radio signal;
radio receiver means for receiving the radio signal of the failure self-diagnosis information transmitted to the external station; and
checking means for checking a system operation malfunction by comparing in the vehicle the failure self-diagnosis information of both the transmitted radio signal and the received radio signal.
1 Assignment
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Accused Products
Abstract
A vehicle is equipped with an engine ECU as a vehicle control unit and a transponder unit, which are connected through a communication line. The engine ECU sends out a response data such as a failure self-diagnosis information of the vehicle to the transponder unit through the communication line in response to a request transmitted through a radio wave communication from an external control station. The transponder unit transmits the response data through the radio wave communication to the control station in return to the request. The engine ECU has a circuit which receives the response data through radio wave communication. The engine ECU compares the received response data with the original response data sent out through the communication line. If the two response data agree, it is determined that the response data is transmitted to the control station successfully. However, if the two response data differ from each other, it is determined that there occurred a transmission failure.
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Citations
10 Claims
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1. A vehicle communication system for a vehicle in radio communication with an external station, the system comprising:
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self-diagnosis means for detecting failure self-diagnosis information in the vehicle through a self-diagnosing operation thereof; radio communication means for transmitting the failure self-diagnosis information to the external station through a radio signal; radio receiver means for receiving the radio signal of the failure self-diagnosis information transmitted to the external station; and checking means for checking a system operation malfunction by comparing in the vehicle the failure self-diagnosis information of both the transmitted radio signal and the received radio signal. - View Dependent Claims (2, 3, 4, 5)
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6. A vehicle communication method for a vehicle having a control unit, a transponder unit and a receiver unit therein, the method comprising the steps of:
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sending out vehicle information from the control unit to the transponder unit through a communication line; transmitting, from the transponder unit to an external radio communication site outside of the vehicle, a radio signal including the vehicle information received from the control unit through the communication line; receiving the transmitted radio signal by the receiver unit; and checking, by the control unit, a transmission operation of the transponder unit by comparing information included in both the transmitted radio signal and the received radio signal, respectively. - View Dependent Claims (7, 8, 9, 10)
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Specification