Abstract: A storing unit stores a map indicating correspondences between keywords representing states of a vehicle and faulty conditions of the vehicle. A keyword setting unit sets the keywords in response to the vehicle as a recorded object. A processing unit identifies the faulty condition corresponding to the set keywords by searching the storing unit. Then, the mode file corresponding to the identified faulty condition is decided as the mode file to be set in a data recording system, based on correspondences between the previously-set faulty conditions and data contents to be recorded and conditions.

Abstract: In a data recording apparatus for recording control parameters in a control unit in a vehicle, it is determined whether or not the control unit has terminated an operation for outputting control parameters to be recorded. Then, when it is determined that the control unit has terminated the operation, shut-down processing is executed at a timing at which the termination of the operation is determined for shutting down a power supply to the data recording apparatus.

Abstract: A control unit receives a data request signal transmitted from a data recording apparatus, and then transmits a control parameter, which corresponds to the data request signal, out of control parameters used to execute control of a vehicle to the data recording apparatus. In this case, a transmission state of a transmitting section at a time of shutdown is stored as a communication history. Therefore, when the communication history is stored in a storing section, the transmission state at the time of shutdown is restored in a starting process executed after a power supply is turned ON, based on the read communication history.

Abstract: A data recording apparatus acquires vehicle data on a time-series basis. Then, a series of vehicle data, which satisfy predetermined acquiring conditions and are collected in a predetermined period from time-series vehicle data acquired by a data acquiring unit are recorded in a data recording unit, while being correlated with time information. The data acquiring unit continues to acquire the vehicle data while a data controlling unit records a series of the vehicle data in the data recording unit.

Abstract: In a data recording apparatus for recording control parameters in a control unit in a vehicle, it is determined whether or not the control unit has terminated an operation for outputting control parameters to be recorded. Then, when it is determined that the control unit has terminated the operation, shut-down processing is executed at a timing at which the termination of the operation is determined for shutting down a power supply to the data recording apparatus.

Abstract: A control unit receives a data request signal transmitted from a data recording apparatus, and then transmits a control parameter, which corresponds to the data request signal, out of control parameters used to execute control of a vehicle to the data recording apparatus. In this case, a transmission state of a transmitting section at a time of shutdown is stored as a communication history. Therefore, when the communication history is stored in a storing section, the transmission state at the time of shutdown is restored in a starting process executed after a power supply is turned ON, based on the read communication history.

Abstract: Control parameters that are chronologically acquired from a control unit are temporarily recorded into a random access memory. Then, a data control section records a series of control parameters within a predetermined period that have a predetermined acquisition condition into a data recording section, among the chronological control parameters recorded in the random access memory. In this case, at time of shutdown, the data control section records the chronological control parameters recorded in the random access memory into the data recording section irrespective of the acquisition conditions.

Abstract: A data recording apparatus acquires vehicle data on a time-series basis. Then, a series of vehicle data, which satisfy predetermined acquiring conditions and are collected in a predetermined period from time-series vehicle data acquired by a data acquiring unit are recorded in a data recording unit, while being correlated with time information. The data acquiring unit continues to acquire the vehicle data while a data controlling unit records a series of the vehicle data in the data recording unit.

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.

Abstract: A storing unit stores a map indicating correspondences between keywords representing states of a vehicle and faulty conditions of the vehicle. A keyword setting unit sets the keywords in response to the vehicle as a recorded object. A processing unit identifies the faulty condition corresponding to the set keywords by searching the storing unit. Then, the mode file corresponding to the identified faulty condition is decided as the mode file to be set in a data recording system, based on correspondences between the previously-set faulty conditions and data contents to be recorded and conditions.