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Electronic circuit

  • US 8,933,590 B2
  • Filed: 08/04/2009
  • Issued: 01/13/2015
  • Est. Priority Date: 08/26/2008
  • Status: Active Grant
First Claim
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1. An electronic circuit comprising:

  • a first substrate comprising a first coil and a transmitting circuit for causing a pulse current in a first direction to flow through the first coil at each change of logical values of transmit data, a prearranged logical value being located in a head of each packet of transmit data; and

    a second substrate comprising a second coil coupled inductively to the first coil, a receiving circuit connected to the second coil, and a control circuit connected the receiving circuit,wherein the receiving circuit comprises;

    a comparator, including an initialization transistor and an output node, for outputting a single pulse signal with a single polarity, by determining, with the use of a threshold voltage, an induced voltage with a double pulse shape induced in the second coil by the pulse current in the first direction; and

    a sequential circuit, coupled to the output node, for inverting the output whenever the single pulse signal is inputted,wherein the initialization transistor initializes the output node to a prearranged logical value during an initialization operation, andwherein the control circuit performs the initialization operation at the head of each data packet.

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