Title:
DEVICE FOR PREVENTING INTERCEPTION OF INFORMATION
Document Type and Number:
Japanese Patent JP3518068
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent the interception of information included in a leaked radio wave emitted from an electronic apparatus.
SOLUTION: This device is provided with a radio wave reception means 53 to receive a leakage electromagnetic wave from an electronic device including information data, a signal detection means 51 to detect the output level of the leakage electromagnetic received by a radio wave reception means, a noise generating means 74 to decide the output level when a noise 55 is outputted based on the output level detected by the signal detection means 51, and a noise transmission means 54 emitting the noise generated by the noise generating means 74 at the decided output level. Since the leakage electromagnetic wave from the electronic device is received and the noise output level is changed accordingly, the S/N is changed and the interception is prevented.
Inventors:
Okamoto, Kazutoshi
Application Number:
JP17116495A
Publication Date:
April 12, 2004
Filing Date:
July 06, 1995
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
H04K3/00; H04K1/10; (IPC1-7): H04K1/10; H04K3/00
Attorney, Agent or Firm:
宮田 金雄 （外１名）
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