Invention Grant
US08693710B2 Apparatus for preventing leakage of a weak signal from a speaker
有权
用于防止来自扬声器的弱信号的泄漏的装置
- Patent Title: Apparatus for preventing leakage of a weak signal from a speaker
- Patent Title (中): 用于防止来自扬声器的弱信号的泄漏的装置
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Application No.: US12506624Application Date: 2009-07-21
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Publication No.: US08693710B2Publication Date: 2014-04-08
- Inventor: Kwang Uk Chu , In Ho Hwang
- Applicant: Kwang Uk Chu , In Ho Hwang
- Applicant Address: KR Daejeon
- Assignee: Electronics and Telecommunications Research Institute
- Current Assignee: Electronics and Telecommunications Research Institute
- Current Assignee Address: KR Daejeon
- Agency: Ladas & Parry LLP
- Priority: KR10-2008-0104624 20081024
- Main IPC: H04R25/00
- IPC: H04R25/00 ; H03G3/34
Abstract:
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.
Public/Granted literature
- US20100104109A1 APPARATUS FOR PREVENTING LEAKAGE OF A WEAK SIGNAL FROM A SPEAKER Public/Granted day:2010-04-29
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