×

Data communication device, air pressure monitoring system using thereof, and data communication method

  • US 8,395,493 B2
  • Filed: 06/01/2012
  • Issued: 03/12/2013
  • Est. Priority Date: 10/06/2008
  • Status: Expired due to Fees
First Claim
Patent Images

1. A data communication device comprising:

  • an antenna resonance circuit configured to receive a signal in the ASK (Amplitude Shift Keying) format, wherein said signal includes;

    a preamble part containing a modulation wave with a predetermined pattern, anda data part containing a modulation wave with an arbitrary pattern;

    a receiving circuit configured to demodulate a detection signal from said reception signal;

    a timer configured to output an interruption signal every time when counting a first predetermined period of time;

    an arithmetic processing device configured to be connected to said receiving circuit and to activate said timer based on a detection signal demodulated from said preamble part of said reception signal; and

    a switch configured to short-circuit both end of said antenna resonance circuit during a second predetermined period of time based on said interruption signal, wherein said second predetermined period of time is different from said first predetermined period of time.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×