Data processing device in vehicle control system
AssigneeToyota Jidosha Kabushiki Kaisha
InventorRyo Ito
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Abstract
A data storage device executes a program including the steps of: determining whether or not a storage instruction to include data to be stored, along with a class generated as a label common among application software, has been obtained; detecting a class in the contents of the storage instruction when the storage instruction is obtained; determining a storage manner based on the class and a table defining in advance storage manners; and storing data in an appropriate storage medium with appropriate data redundancy based on the determined storage manner.
Claims12
A data processing device storing data in at least one of a plurality of applications to be executed in an operation unit in at least one of a plurality of storage media in a vehicle control system including the operation unit and the plurality of storage media, the data processing device comprising:
- an obtaining unit that obtains information on significance of vehicle control data processed in the operation unit from the at least one of the plurality of applications;
- and
- a processing unit that determines a class of data reliability, a data holding period based on the information on significance of vehicle control data, and that selects a storage medium from among the plurality of storage media in the vehicle control system in accordance with the determined class of data reliability and data holding period, and that sets a manner of storage in the selected storage medium,
- wherein the processing unit selects the storage medium from among the plurality of storage media by:
- selecting at least one first storage medium from among the plurality of storage media to store data that is rewritten at a first interval, the at least one first storage medium being adapted to a first data holding period,
- selecting at least one second storage medium from among the plurality of storage media to store data that is rewritten at a second interval, the second interval being longer than the first interval, the at least one second storage medium being adapted to a second data holding period, the second data holding period being longer than the first data holding period,
- the data is stored in the selected at least one first storage medium and the selected at least one second storage medium such that data of a reliability below a predetermined threshold, which is less frequently rewritten, is stored in the selected at least one second storage medium and not in the selected at least one first storage medium, and
- the information on the class of significance of vehicle control data is common among the plurality of applications.
A data processing device storing data in at least one of a plurality of applications to be executed in an operation unit in at least one of a plurality of storage media in a vehicle control system including the operation unit and the plurality of storage media, the data processing device comprising:
- obtaining means that obtains information on significance of vehicle control data processed in the operation unit from the at least one of the plurality of applications;
- and
- processing means that determines a class of data reliability, a data holding period based on the information on significance of vehicle control data, and selects a storage medium from among the plurality of storage media in accordance with the determined class of data reliability and data holding period, and that sets a manner of storage in the selected storage medium,
- wherein the processing means selects the storage medium from among the plurality of storage media by:
- selecting at least one first storage medium from among the plurality of storage media to store data that is rewritten at a first interval, the at least one first storage medium being adapted to a first data holding period,
- selecting at least one second storage medium from among the plurality of storage media to store data that is rewritten at a second interval, the second interval being longer than the first interval, the at least one second storage medium being adapted to a second data holding period, the second data holding period being longer than the first data holding period,
- the data is stored in the selected at least one first storage medium and the selected at least one second storage medium such that data of a reliability below a predetermined threshold, which is less frequently rewritten, is stored in the selected at least one second storage medium and not in the selected at least one first storage medium, and
- the information on the class of significance of vehicle control data is common among the plurality of applications.
Dependencies are inferred from the claim text.