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Anti-interference protecting method for data

A data and state protection technology, applied in electrical digital data processing, instruments, preventing unauthorized use of memory, etc.

Active Publication Date: 2015-05-06
兆讯恒达科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] That is to say, the program may run directly to the unlocking place to perform erasing, or it may run to the calling place after packaging, which may eventually cause the storage unit to be erased by mistake

Method used

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  • Anti-interference protecting method for data

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Embodiment Construction

[0070] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

[0071] The data anti-interference protection method of the present invention adopts the two-level protection mode of "state machine + partition protection" to protect the program,

[0072] Among them, the partition protection is to divide the storage unit into several areas whose erasing and writing permissions can be individually controlled, and each area has three states, namely, protected state, unprotected state and locked state.

[0073] Protected state: The memory cell area in this state cannot be directly erased or written. If you want to erase or write, you must first cancel the write protection;

[0074] Unprotected state: the memory cell area in this state can be erased and written freely;

[0075] Locked state: The storage unit area in this state cannot perform an...

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PUM

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Abstract

The invention discloses an anti-interference protecting method for preventing data of a memory unit from being mistakenly erased. The method comprises the following steps: S1, protecting the partitions: that is, dividing the memory unit of stored data into a plurality of partitions independently controlling the erasing rights; S2, setting a state machine of an erasing program and examining whether the state value of the partition is a predetermined state value or not before the partition executes each command of the erasing program, if so, executing the command and updating the state value; or program error. According to the anti-interference protecting method for data disclosed by the invention, after electronic equipment subjected to an interference program is out of control, program runaway is detected, and program parameters and procedure codes are prevented from being damaged.

Description

technical field [0001] The invention relates to a data protection method, in particular to an anti-jamming protection method for preventing data of a storage unit of an electronic device from being erased and written by mistake. Background technique [0002] Electronic equipment has been widely used in various fields of production and life, which not only improves production efficiency, but also makes people's lives more convenient. However, electronic equipment is disturbed in the harsh electromagnetic environment, and the internal program operation will be out of control. If the storage unit inside the electronic device is fully open, the program may perform erroneous erasing and writing operations on the data in the storage unit. After the electronic device is powered on again directly, the program cannot run normally because the data has been modified. Strong interference may cause the program to run to the location where there is data to be erased, and the data is era...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/28G06F12/14
Inventor 金元兵
Owner 兆讯恒达科技股份有限公司