Electronic control unit and vehicle control system
First Claim
1. An electronic control unit provided in a vehicle and configured to be coupled with a peripheral electronic control unit for storing failure information of the vehicle, comprising:
- storing means for storing vehicle identification information unique to the vehicle;
rewriting means for rewriting the vehicle identification information into new vehicle identification information when the rewriting means receive a rewriting request of the vehicle identification information;
a memory configured to store data regardless of an on-off state of a power source of the electronic control unit;
state information control means for writing state information in the memory, the state information indicating a state of rewriting the vehicle identification information, the state information including renewing information and non-request information, the renewing information indicating a state where the vehicle identification information is being rewritten, the non-request information indicating a state where the vehicle identification information is not being rewritten;
erasing order sending means for sending an erasing order to the peripheral electronic control unit when the state information stored in the memory is the renewing information so as to control the peripheral electronic control unit to erase the failure information;
determining means for determining whether the peripheral electronic control unit sends an erasing completion signal indicating that the erasing of the failure information in the peripheral electronic control unit is completed, wherein;
the state information control means writes the renewing information in the memory when the rewriting means receives the rewriting request; and
the state information control means includes renewing means for rewriting the renewing information into the non-request information when the rewriting means completes the rewriting of the vehicle identification information and the determining means determines that the peripheral electronic control unit sends the erasing completion signal.
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Accused Products
Abstract
When an electronic control unit receives a rewriting request of vehicle identification information, the electronic control unit writes state information indicating a rewriting state in a memory and rewrites the vehicle identification information into new vehicle identification information. The electronic control unit sends an erasing order to a peripheral electronic unit for erasing failure information stored in the peripheral electronic unit and determines whether the peripheral electronic control unit sends an erasing completion signal indicating that the erasing of the failure information is completed. The electronic control unit erases the state information indicating the rewriting state when the rewriting of the vehicle identification information is completed and the peripheral electronic control unit sends the erasing completion signal.
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Citations
26 Claims
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1. An electronic control unit provided in a vehicle and configured to be coupled with a peripheral electronic control unit for storing failure information of the vehicle, comprising:
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storing means for storing vehicle identification information unique to the vehicle; rewriting means for rewriting the vehicle identification information into new vehicle identification information when the rewriting means receive a rewriting request of the vehicle identification information; a memory configured to store data regardless of an on-off state of a power source of the electronic control unit; state information control means for writing state information in the memory, the state information indicating a state of rewriting the vehicle identification information, the state information including renewing information and non-request information, the renewing information indicating a state where the vehicle identification information is being rewritten, the non-request information indicating a state where the vehicle identification information is not being rewritten; erasing order sending means for sending an erasing order to the peripheral electronic control unit when the state information stored in the memory is the renewing information so as to control the peripheral electronic control unit to erase the failure information; determining means for determining whether the peripheral electronic control unit sends an erasing completion signal indicating that the erasing of the failure information in the peripheral electronic control unit is completed, wherein; the state information control means writes the renewing information in the memory when the rewriting means receives the rewriting request; and the state information control means includes renewing means for rewriting the renewing information into the non-request information when the rewriting means completes the rewriting of the vehicle identification information and the determining means determines that the peripheral electronic control unit sends the erasing completion signal. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A vehicle control system provided in a vehicle, comprising:
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a first electronic control unit; and a second electronic control unit configured to store failure information of the vehicle and coupled with the first electronic control unit, wherein the first electronic control unit includes; storing means for storing vehicle identification information unique to the vehicle; rewriting means for rewriting the vehicle identification information into new vehicle identification information when the rewriting means receive a rewriting request of the vehicle identification information; a memory configured to store data regardless of an on-off state of a power source of the first electronic control unit; state information control means for writing state information in the memory, the state information indicating a state of rewriting the vehicle identification information, the state information including renewing information and non-request information, the renewing information indicating a state where the vehicle identification information is being rewritten, the non-request information indicating a state where the vehicle identification information is not being rewritten; erasing order sending means for sending an erasing order to the second electronic control unit when the state information stored in the memory is the renewing information so as to control the second electronic control unit to erase the failure information; and determining means for determining whether the second electronic control unit sends an erasing completion signal indicating that the erasing of the failure information in the second electronic control unit is completed, the state information control means writes the renewing information in the memory when the rewriting means receives the rewriting request, and the state information control means includes renewing means for rewriting the renewing information into the non-request information when the rewriting means completes the rewriting of the vehicle identification information and the determining means determines that the second electronic control unit sends the erasing completion signal. - View Dependent Claims (8, 9, 10, 11, 12)
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13. An electronic control unit provided in a vehicle, comprising:
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storing means for storing vehicle identification information unique to the vehicle; failure information storing means for storing failure information of the vehicle; rewriting means for rewriting the vehicle identification information into new vehicle identification information when the rewriting means receives a rewriting request of the vehicle identification information; erasing means for erasing the failure information in the failure information storing means when the rewriting means rewrites the vehicle identification information; history storing means for storing a history of the vehicle identification information stored in the storing means; history determining means for determining whether vehicle identification information same as the new vehicle identification information is stored in the history storing means; and prohibiting means for prohibiting the rewriting means from rewriting the vehicle identification information stored in the storing means into the new vehicle identification information when the history determining means determines that vehicle identification information same as the new vehicle identification information is stored in the history storing means. - View Dependent Claims (14, 15, 16)
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17. An electronic control unit provided in a vehicle and configured to be coupled with a peripheral electronic control unit for storing failure information of the vehicle, comprising:
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storing means for storing vehicle identification information unique to the vehicle; rewriting means for rewriting the vehicle identification information into new vehicle identification information when the rewriting means receive a rewriting request of the vehicle identification information; a memory configured to store data regardless of an on-off state of a power source of the electronic control unit; state information control means for writing state information in the memory, the state information indicating a state of rewriting the vehicle identification information; erasing order sending means for sending an erasing order to the peripheral electronic control unit when the state info nation stored in the memory indicates a rewriting state so as to control the peripheral electronic control unit to erase the failure information; determining means for determining whether the peripheral electronic control unit sends an erasing completion signal indicating that the erasing of the failure information in the peripheral electronic control unit is completed, wherein; the state information control means writes the state information indicating the rewriting state in the memory when the rewriting means receives the rewriting request; the state information control means includes determination erasing means for erasing the state information indicating the rewriting state when the rewriting means completes the rewriting of the vehicle identification information and the determining means determines that the peripheral electronic control unit sends the erasing completion signal; the electronic control unit further comprises failure information storing means for storing the failure information, the failure information storing means erasing the failure information stored therein when the state information stored in the memory indicates the rewriting state; the determining means further determines whether the failure information stored in the failure information storing means is erased when the state information stored in the memory indicates the rewriting state; and the determination erasing means erases the state information indicating the rewriting state when the determining means determines that the peripheral electronic control unit sends the erasing completion signal and the failure information stored in the failure information storing means is erased in a state where the rewriting means completes the rewriting of the vehicle identification information. - View Dependent Claims (18, 19, 20, 21)
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22. A vehicle control system provided in a vehicle, comprising:
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a first electronic control unit; and a second electronic control unit configured to store failure information of the vehicle and coupled with the first electronic control unit, wherein the first electronic control unit includes; storing means for storing vehicle identification information unique to the vehicle; rewriting means for rewriting the vehicle identification information into new vehicle identification information when the rewriting means receive a rewriting request of the vehicle identification information; a memory configured to store data regardless of an on-off state of a power source of the first electronic control unit; state information control means for writing state information in the memory, the state information indicating a state of rewriting the vehicle identification information; erasing order sending means for sending an erasing order to the second electronic control unit when the state information stored in the memory indicates a rewriting state so as to control the second electronic control unit to erase the failure information; and determining means for determining whether the second electronic control unit sends an erasing completion signal indicating that the erasing of the failure information in the second electronic control unit is completed, wherein; the state information control means writes the state information indicating the rewriting state in the memory when the rewriting means receives the rewriting request, and the state information control means includes determination erasing means for erasing the state information indicating the rewriting state when the rewriting means completes the rewriting of the vehicle identification information and the determining means determines that the second electronic control unit sends the erasing completion signal; the first electronic control unit further includes failure information storing means for storing the failure information; the failure information storing means configured to erase the failure information when the state information stored in the memory indicates the rewriting state; the determining means further determines whether the failure information stored in the failure information storing means is erased when the state information stored in the memory indicates the rewriting state; and the determination erasing means erases the state information indicating the rewriting state when the determining means determines that the second electronic control unit sends the erasing completion signal and the failure information stored in the failure information storing means is erased in a state where the rewriting means completes the rewriting of the vehicle identification information. - View Dependent Claims (23, 24, 25, 26)
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Specification