Title:
ANALYSIS PREVENTION DEVICE AND ELECTRONIC DEVICE
Document Type and Number:
Japanese Patent JP2022098880
Kind Code:
A
Abstract:
To prevent analysis of information (data) stored in an integrated circuit even when its housing is opened in a dark place.SOLUTION: An analysis prevention device 1 includes a voltage dividing circuit 2 and a pressing unit 3. The voltage dividing circuit 2 divides a predetermined voltage by a pressure-sensitive element 4 whose resistance value changes when the pressure applied to its own element changes and a resistor 5 which are connected in series and outputs the divided voltage to a power input of the integrated circuit. The pressing unit 3 changes the pressure applied to the pressure sensitive element 4 according to the opening and closing of a device housing. When the housing is closed, the voltage obtained by the voltage division is a first voltage at which the integrated circuit is operated by a resistance value of the pressure sensitive element 4 to the pressure by the pressing unit 3 when the housing is closed. When the housing is open, and is a second voltage which is different from the first voltage due to the resistance value of the pressure sensitive element 4 to the pressure by the pressing unit 3 when the housing is open.SELECTED DRAWING: Figure 5
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Inventors:
KAWAMOTO AKIRA
Application Number:
JP2020212525A
Publication Date:
July 04, 2022
Filing Date:
December 22, 2020
Export Citation:
Assignee:
NEC NETWORK & SENSOR SYSTEMS LTD
International Classes:
G06F21/86; G01L5/00; G06F21/75
Attorney, Agent or Firm:
Desk
Keiji Kitajima
Keiji Kitajima