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Data rewrite system for vehicle, in-vehicle apparatus and rewrite apparatus

A technology for in-vehicle equipment and rewriting system, which is applied in vehicle components, memory systems, electrical digital data processing, etc., and can solve problems such as complex in-vehicle equipment

Inactive Publication Date: 2013-06-05
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When such a configuration of selecting update target firmware by comparing version information of this firmware with version information of firmware in an external storage medium is applied to an in-vehicle device, it is inevitable that the in-vehicle device becomes complicated
Therefore, although the technique disclosed in JP-2007-310690 can shorten the amount of time it takes to rewrite data, it is difficult to apply the technique to a data rewriting system for vehicles

Method used

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  • Data rewrite system for vehicle, in-vehicle apparatus and rewrite apparatus
  • Data rewrite system for vehicle, in-vehicle apparatus and rewrite apparatus

Examples

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Embodiment Construction

[0013] Embodiments will be described with reference to the drawings.

[0014] The data rewriting system 100 of one embodiment includes a combination meter 50, a rewriting device 30, and the like. In data rewriting system 100 , rewriting device 30 rewrites data stored in combination meter 50 . The following will be based on figure 1 The configuration of the data rewriting system 100 is described in detail.

[0015] The combination meter 50 is one of a plurality of in-vehicle devices mounted to the vehicle, and provides various information about the vehicle to the user. The combination meter 50 includes a display control circuit 51, a communication interface 55, a display device 57, and a storage device 53 for display.

[0016] The display control circuit 51 includes a microcomputer and the like. The display control circuit 51 includes a processor for performing various calculation processing, a random access memory (RAM) used as a work area in calculation, and an input-outp...

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PUM

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Abstract

The invention discloses a data rewrite system for a vehicle, an in-vehicle apparatus and a rewrite apparatus. The data rewrite system includes an in-vehicle apparatus and a rewrite apparatus. The in-vehicle apparatus stores multiple operation data units in multiple storage areas and outputs version informations of the operation data wilts and information about the storage areas to the rewrite apparatus. The rewrite apparatus selects a target storage area, which is a target for data update, from the storage areas of the in-vehicle apparatus by comparing the versions informations of the operation data units with version informations of update data units. The rewrite apparatus updates the selected target storage area with the update data unit that corresponds to the operation data unit in the target storage area.

Description

technical field [0001] The present disclosure relates to a rewriting system for a vehicle including an on-vehicle device mounted to the vehicle and a rewriting device configured to rewrite data stored in the on-vehicle device. The present disclosure also relates to in-vehicle devices and rewriting devices. Background technique [0002] As a technique related to rewriting data stored in an on-vehicle device, JP-2005-332148A (corresponding to US 2005 / 0270888A) discloses a rewriting system for rewriting stored data of an on-vehicle controller. In the rewriting system disclosed in JP-2005-332148A, when the rewriting device is connected to the vehicle, the rewriting device sends rewriting data to the on-vehicle controller. In this way, the data stored in the nonvolatile memory of the on-vehicle control unit is rewritten with new rewrite data. [0003] JP-2007-310690 discloses a firmware update method as a technique related to rewriting data stored in a nonvolatile memory of a d...

Claims

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Application Information

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IPC IPC(8): G06F13/16
CPCG06F13/16G06F8/665G06F9/445G06F8/654B60R16/02G06F8/36G06F2212/2022
Inventor 西山笃志
Owner DENSO CORP
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