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Flash memory protection module and closing method thereof

A technology for protecting modules and flash memory, which is applied to protect storage content from loss, instruments, calculations, etc. It can solve the problems of personal digital assistant devices that cannot be shut down, flash memory data loss, etc., and achieve the effect of avoiding crashes and solving data loss

Inactive Publication Date: 2008-05-07
MITAC COMP (SHUN DE) LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The purpose of the present invention is to design a flash memory protection module and its shutdown method, which is used to solve the data loss problem of the flash memory when the personal digital assistant device is shut down, and to avoid the personal digital assistant device being in a stagnant state due to a crash situation and unable to complete shutdown

Method used

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  • Flash memory protection module and closing method thereof
  • Flash memory protection module and closing method thereof
  • Flash memory protection module and closing method thereof

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Embodiment Construction

[0012] A flash memory protection module and its shutdown method according to preferred embodiments of the present invention will be described below with reference to related drawings, wherein the same components will be described with the same reference symbols.

[0013] Please refer to FIG. 2 , which is a schematic diagram of a flash memory protection module of the present invention, which is suitable for an electronic device with a processor and a flash memory. The protection module of the present invention is used to confirm that the processor of the electronic device has stopped reading and writing to the flash memory when the operating terminal is turned off, or start to shut down the electronic device after a preset shutdown time has elapsed. The protection module includes an input unit 21 , a delay unit 22 and a logic unit 23 .

[0014] Wherein the input unit 21 is electrically connected to the processor 24 and the delay unit 22 of the electronic device respectively, an...

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Abstract

The invention discloses a protection module of a flash memory and the power-off method, which is used in an electronic device with a processor and comprises an input unit, a time delay unit and a logical unit. An alert is provided by the input unit to the processor and the time delay unit, and is used to inform the processor to stop the reading and writing action to the flash memory and inform the time delay unit to start to count. After the processor stops the reading and writing action or the time delay unit counts till a preset power-off time, the logical unit drives the electronic device to accomplish the power-off action.

Description

【Technical field】 [0001] The present invention relates to a flash memory protection module and a shutdown method thereof, which are applied to electronic devices using processors to read and write flash memories, especially using OR gates and delay units to avoid data loss and failure to shut down due to crashes. 【Background technique】 [0002] Please refer to FIG. 1 , which is a flowchart of the steps of the shutdown method of the existing personal digital assistant device. First, the user performs a shutdown action (step 100), and the processor directly sends a shutdown notification to the power supply unit; the power supply unit stops supplying power to the personal digital assistant device (step 110), and the personal digital assistant device stops working ; Complete the shutdown action of the personal digital assistant device (step 120). Generally speaking, if the processor of the personal digital assistant device crashes, the power supply unit will continue to supply ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/16G06F1/00
Inventor 林育廷
Owner MITAC COMP (SHUN DE) LTD
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