Memory device, terminal apparatus and data repair system

A technology for storage devices and terminal equipment, applied in the field of repair systems, can solve problems such as hindering the expansion of new services, hindering IT (information technology development, user inconvenience, etc.)
CN1498371AInactive Publication Date: 2004-05-19PANASONIC CORP
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
PANASONIC CORP
Publication Date
2004-05-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

A system includes server 10 that manages data and check information for checking damage to the data, terminal apparatus 20 that acquires the data and the check information from server 10, and memory device 30 that stores the data acquired by terminal apparatus 20 into non-tamper-resistant memory area 31 and the check information acquired by terminal apparatus 20 into tamper-resistant memory area 32. Memory device 30 detects data in which data damage has occurred using the check information. Terminal apparatus 20 acquires the detected data from server 10, and memory device 30 repairs the data damage using the data acquired by terminal apparatus 20. This improves the storage efficiency of memory device 30, and furthermore, reduces the data communication time taken for acquiring normal data for repair from server 10.
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Description

technical field

[0001] The present invention relates to a restoration system for repairing a damaged portion of downloaded data, a storage device and a terminal device constituting the system, and more particularly, an object of the present invention is to enable effective restoration of data stored in a storage device. Background technique

[0002] Traditionally, it has been widely accepted to download data such as programs governing the processing of the terminal device from a server to the terminal device via a network. In some cases, the data stored in the storage medium of the terminal device is damaged due to various reasons, including abnormal transmission during downloading, device hardware failure, data loss caused by viruses, data destruction caused by external attacks, etc.

[0003] These types of corruption can be detected by checking for a match between check information, such as a checksum sent with the data by the server, and a checksu...

Claims

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