Data recording apparatus and the method thereof
First Claim
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1. A data recording apparatus comprising:
- a data recording unit for storing vehicle data and being accessible by an external system, wherein the vehicle data includes a control parameter in a control unit equipped in a vehicle;
a data control unit for recording time-series vehicle data in the data recording unit in accordance with an acquired condition, wherein the time-series vehicle data are acquired from the vehicle based on an acquisition content indicative of a type of the vehicle data to be recorded in the data recording unit, and wherein the acquired condition is a condition under which the vehicle data can be acquired for effectively identifying a faulty state of the vehicle;
a shutdown processing unit for recording an operation history in the data recording unit during a shutdown processing, wherein the operation history includes the acquisition contents, the acquired condition, and a current operating state of the data control unit, and wherein the shutdown processing is performed before the data recording apparatus is powered off; and
an initiation processing unit for reading the operation history recorded in the data recording unit and for restoring the operating state at the time of the shutdown processing based on the read operation history during an initiation processing performed after turning on the power supply.
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Abstract
In a shutdown processing performed before the power supply is shut down, acquisition contents, an acquired condition, and a current operating state in a data control unit are recorded in a data recording unit as an operation history. Then, in initiation processing which is performed after a power-on, the recorded operation history is read from the data recording unit, and the operating state at the time of the shutdown is restored based on the read operation history.
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Citations
10 Claims
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1. A data recording apparatus comprising:
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a data recording unit for storing vehicle data and being accessible by an external system, wherein the vehicle data includes a control parameter in a control unit equipped in a vehicle;
a data control unit for recording time-series vehicle data in the data recording unit in accordance with an acquired condition, wherein the time-series vehicle data are acquired from the vehicle based on an acquisition content indicative of a type of the vehicle data to be recorded in the data recording unit, and wherein the acquired condition is a condition under which the vehicle data can be acquired for effectively identifying a faulty state of the vehicle;
a shutdown processing unit for recording an operation history in the data recording unit during a shutdown processing, wherein the operation history includes the acquisition contents, the acquired condition, and a current operating state of the data control unit, and wherein the shutdown processing is performed before the data recording apparatus is powered off; and
an initiation processing unit for reading the operation history recorded in the data recording unit and for restoring the operating state at the time of the shutdown processing based on the read operation history during an initiation processing performed after turning on the power supply. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A data recording method for data recording apparatus for recording a vehicle data including a control parameter in a control unit of a vehicle in a data recording unit accessible by an external system, comprising:
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recording time-series vehicle data in the data recording unit in accordance with an acquired condition, wherein the time-series vehicle data is acquired from the vehicle based on acquisition contents indicative of the type of the vehicle data to be recorded in the data recording unit, and wherein the acquired condition is a condition under which the vehicle data can be acquired for effectively identify a faulty state of the vehicle;
storing an operation history in the data recording unit during a shutdown processing, wherein the operation history includes the acquisition contents, the acquired condition, and a current operating state of the data control unit, and wherein the shutdown processing is performed before the data recording apparatus is powered off;
reading the operation history recorded in the data recording unit and restoring the operating state at the time of the shutdown processing based on the read operation history during an initiation processing performed after turning on the power supply. - View Dependent Claims (9, 10)
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Specification