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Integrity check method applied to electronic device, and related circuit

A technology for integrity checking and electronic devices, which is applied in electrical digital data processing, error detection/correction, and detection of faulty computer hardware, etc. It can solve the problems of weak security of optical storage devices and excessive data capacity that cannot be checked. Achieve the effect of strengthening safety and improving efficiency

Inactive Publication Date: 2009-01-07
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the optical storage device needs to be endowed with more functions or improved functions, the capacity of the control-related data will be too large to complete the inspection within the required time
Therefore, control-related data may be used before an integrity check is performed, which means that the security of the optical storage device will be very weak

Method used

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  • Integrity check method applied to electronic device, and related circuit
  • Integrity check method applied to electronic device, and related circuit
  • Integrity check method applied to electronic device, and related circuit

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Embodiment Construction

[0016] The integrity checking method provided by the present invention can be applied to a wide range of electronic devices in the market, such as optical storage devices, mobile phones and personal digital assistants (PDAs). In particular, according to some embodiments provided by the present invention, these electronic devices can be an embedded system.

[0017] Please refer to figure 1 and Figure 2, figure 1 It is a flow chart of the integrity check method 910 applied to the above-mentioned electronic device (eg, optical storage device) according to an embodiment of the present invention. FIG. 2 is a schematic diagram of a corresponding circuit 100 that may be used to perform the integrity checking method 910 . Circuit 100 is located as figure 1 In the electronic device where the integrity checking method 910 is shown, especially, according to this embodiment, the electronic device can be an embedded system.

[0018] According to this embodiment, the circuit 100 include...

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Abstract

The invention relates to electronic device integrity checking method and corresponding circuit. The method comprise: capturing at least a part of external data which is stored in electronic device to specific memorizer; at same time, checking if the size of captured data in memorizer amounts to predetermined value, the predetermined value being smaller than all size of external data; performing integrity checking for captured data when size of captured data in specific memorizer amounts to predetermined value. The invention can promote operation efficiency for performing integrity checking, enhances safety of the electronic device; and it is accomplished for the electronic device by low cost embedding system.

Description

technical field [0001] The invention relates to the safety of electronic devices, in particular to a method for checking integrity of electronic devices and related circuits. Background technique [0002] In consideration of security, for the latest optical storage devices, such as Blu-ray drive (BD drive) and high definition digital versatile disc (HD-DVD), control-related It is necessary for data to be changed or to check whether control-related data has been changed. Integrity checking of control-related data (such as: firmware code, Firmware code) is a method to solve this problem. [0003] For optical storage devices, because the host device used to manage the optical storage device (such as the controller / control circuit on the motherboard of the personal computer) requires a fast response time, the use of basic input and output in personal computers It is not appropriate to perform the integrity check of the control-related data in the optical storage device in the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/22
CPCG06F11/1004
Inventor 陈炳盛赵铭阳许绩群张尧敦吴哲宏
Owner MEDIATEK INC