PROTECTION METHOD FOR DATA INFORMATION ABOUT ELECTRONIC DEVICE AND PROTECTION CIRCUIT THEREFOR

Title:

PROTECTION METHOD FOR DATA INFORMATION ABOUT ELECTRONIC DEVICE AND PROTECTION CIRCUIT THEREFOR

Document Type and Number:

WIPO Patent Application WO/2014/082477

Kind Code:

A1

Abstract:

A method for protecting data information about an electronic device, comprising the following steps: 1) performing power-on detection on an electronic device of which production and installation are completed, detecting the stray capacitance of a signal line thereof, and recording same as a standard value of the signal line; 2)during a power-on operation, monitoring the stray capacitance of the signal line; 3)comparing the monitored capacitance value with the standard value, and entering step 4) when exceeding the set threshold value, otherwise entering step 2); and 4) erasing significant data in the electronic device. The method uses the manner of monitoring the stray capacitance to monitor the contact of outside foreign matter with the signal line, guarantees the security of data in the electronic device, and has the characteristics that the implementation process is simple and easy, safe and reliable, and the cost is low.

Inventors:

HUANG SHANBING (CN)
ZHAI JIANGUANG (CN)
WU HONGYUAN (CN)

Application Number:

PCT/CN2013/083258

Publication Date:

June 05, 2014

Filing Date:

September 11, 2013

Export Citation:

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Assignee:

SHENZHEN XINGUODU TECH CO LTD (CN)

International Classes:

G07G1/00

Foreign References:

CN102509052A	2012-06-20
CN101419522A	2009-04-29
CN1460203A	2003-12-03
CN202795052U	2013-03-13
CN203025860U	2013-06-26
CN101975893A	2011-02-16
EP0508603A2	1992-10-14

Other References: