Time interval analyzer having real time counter

  • US 6,621,767 B1
  • Filed: 07/14/1999
  • Issued: 09/16/2003
  • Est. Priority Date: 07/14/1999
  • Status: Expired due to Term
First Claim
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1. A time interval analyzer for measuring time intervals between events in an input signal, said analyzer comprising:

  • a trigger circuit that receives said input signal and that outputs a time trigger signal at a first triggering level upon occurrence of a first input signal event;

    a time counter that receives a time base signal and that increments a time count at each period of said time base signal, wherein said time count is calibrated to a predetermined reference time, said reference time being a real calendar time date; and

    a processor circuit in communication with said trigger circuit and said time counter so that said processor circuit receives said time trigger signal and reads said time count from said time counter, wherein said processor circuit is configured to read said time count upon receiving said time trigger signal at said first triggering level so that said time count read by said processor circuit indicates the time at which said first input signal event occurred with respect to said predetermined reference time.

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