Apparatus for preventing leakage of a weak signal from a speaker

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United States of America Patent

PATENT NO 8693710
APP PUB NO 20100104109A1
SERIAL NO

12506624

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Abstract

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An apparatus for preventing leakage of a weak signal from a speaker is provided. The apparatus passes a normal speaker drive signal coming through speaker signal lines and blocks a weak signal generated by the sounds around the speaker, thereby preventing wiretapping the speaker.

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Patent Owner(s)

  • ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chu, Kwang Uk Seoul, KR 10 120
Hwang, In Ho Daejeon, KR 43 267

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