Original document(24 pages)  中文版
    In order to implement a demodulating method and demodulating circuit for portable information equipment carrying out synchronous electromagnetic induction communication using coils that are capable of receiving signals in a stable manner even when there are shifts in the electromagnetic coupling characteristics of the receiving coil or shifts in the frequency characteristics of the receiving circuit, a waveform reshaping circuit subjects a signal received in a synchronous manner by a coil to waveform reshaping taking center points of the signal as threshold values and levels of the wave-shaped waveform are latched after a period of time decided beforehand has elapsed using a demodulation clock that is faster than a transmission clock. The received data is then finally demodulated by determining whether or not latch data is valid using steps of a procedure.
Application Number
申请号		 00121751 Application Date
申请日		 2000.06.10
Title 名称 Data demdulating method and demodlator circuit for synchronous electromagnetic induction communication
Publication Number
公开号		 1277497 Publication Date
公开日		 2000.12.20
Approval Pub. Date Granted Pub. Date
International Classification 分类号 H04B7/00
Applicant(s) Name
申请人		 Seiko Electronic Co. Ltd.
Address 地址
Inventor(s) Name 发明人 Fukujima Toshitaka
Attorney & Agent 代理人 zhang zhicheng

  
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