Information protection device and protection method

An information protection and protection device technology, applied in the protection of internal/peripheral computer components, etc., can solve the problems of great security and hidden dangers of devices

Inactive Publication Date: 2015-09-23
SEMICON MFG INT (SHANGHAI) CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the EEPROM platform, there is no self-safety protection function as described above, and the device has a great potential safety hazard, so it is necessary to further improve the device in order to eliminate the above-mentioned defects

Method used

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  • Information protection device and protection method
  • Information protection device and protection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] In the present invention, the information protection device includes a control circuit and a photodiode, wherein the control circuit and the photodiode are connected in series, and control the conduction of the photodiode to realize the potential signal reset to prevent leakage of information.

[0037] Such as Figure 1a As shown, the control circuit at least includes a reset transistor M1 and an output transistor M3, wherein the drain of the reset transistor M1 is connected to the power supply voltage, and the gate of the reset transistor M1 is connected to the reset control signal connected, the source of the reset transistor M1 is connected to the drain of the output transistor M3, and the source of the output transistor M3 is connected to the signal output terminal;

[0038] Wherein, the cathode of the photodiode is connected to the source of the reset transistor M1, and the anode of the photodiode is grounded.

[0039] Preferably, the gate of the output transisto...

Embodiment 2

[0049] The control circuit is not limited to the above two transistors, in order to better control the photodiode, the control circuit may further include a plurality of auxiliary transistors, the number of the auxiliary transistors is not limited to a certain A numerical range, for example, can be 1, or more, and can be set as required.

[0050] In this example, if Figure 1b As shown, the control circuit further includes a second transistor M2 disposed between the reset transistor M1 and the output transistor M3, the gate of the second transistor M2 is connected to the source of the reset transistor M1 , the source of the second transistor M2 is connected to the power supply voltage, and the drain of the second transistor M2 is connected to the drain of the output transistor M3.

[0051] Wherein, the reset transistor M1 , the output transistor M3 , the arrangement manner of the photodiode, and the protection method of the protection device can refer to Embodiment 1, and wil...

Embodiment 3

[0053] The protection device of the present invention can be applied not only in the EEPROM process, but also in other commonly used storage devices in the field, which will not be repeated here.

[0054] An embodiment of the present invention provides an electronic device, including an information storage device and the information protection device according to any one of claims 1-6.

[0055] Wherein, the information storage device includes EEPROM, and the electronic device includes a bank card and a financial card.

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PUM

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Abstract

The invention relates to an information protection device and protection method and an electronic device containing the information protection device. The information protection device comprises a control circuit and a photoelectrical diode, wherein the control circuit is connected in series with the photoelectrical diode and controls the photoelectrical diode to be conducted so as to realize the resetting of a potential signal and prevent information leakage. The protection device comprises the control circuit and the photoelectrical diode, wherein the control circuit can control the photoelectrical diode to be conducted after receiving a signal, and original potential information is reset after the photoelectrical diode is conducted, so that the original potential information is damaged to prevent the information leakage and a self-protective function of the information is realized, and thus various confidential information is safer.

Description

technical field [0001] The present invention relates to the field of semiconductors, in particular, the present invention relates to an information protection device and a protection method, and an electronic device including the confidence protection device. Background technique [0002] Electrically Erasable Programmable Read-Only Memory (EEPROM, Electrically Erasable Programmable Read-Only Memory) is a memory chip that does not lose data after power failure; it can erase existing information on a computer or a dedicated device and reprogram it. EEPROM is a non-volatile memory, and flash EEPROM among them is developing rapidly. EEPROM is more complex than DRAM, so it is difficult to improve the integration of EEPROM. [0003] The information-storing portion of an EEPROM memory cell is like a normally-off or normally-on transistor that, when the floating gate is charged, holds charge or blocks the flow of electrons from the control gate to the silicon; charging is applied ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/78
Inventor 王孝远郭兵徐锦心
Owner SEMICON MFG INT (SHANGHAI) CORP
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