Title: Broadcasting guide command system
Application Number: 98111464 Application Date: 1998.08.21
Publication Number: 1212575 Publication Date: 1999.03.31
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H04N7/15
Applicant(s) Name: Siya Electronic Medical Equipment Co., Ltd., Nanji Address: 210049
Inventor(s) Name: Dai Duheng, Shen Yanfei
Attorney & Agent: shen genshui
Abstract:
     The new-type broadcasting guide command system consists of power supply, broadcasting guide signal amplifier and receiver. It is characterized by that it can possess two-way microphone input and stereo reception or TV signal input. The broadcasting guide signal is passed through AF amplifier, and inputted to power amplification exciting toroidal coil to produce a voice frequency signal electromagnetic field identical to input signal in the range covered by said toroidal coil, then the receiver produces an electric signal identical to broadcasting guide signal by means of induction of inductance coil, then the electric signal is amplified and inputted to ear-piece. Said invention possesses the following advantages: said broadcasting guide can give the signal to guided person in the wireless mode, integrated receiver and earpiece can be hung behind ear or placed in ear, its use is convenient and application range is extensive.
Time: 12
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