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Synchronizing continuous signals and discrete events for an implantable medical device

  • US 20050137627A1
  • Filed: 12/22/2003
  • Published: 06/23/2005
  • Est. Priority Date: 12/22/2003
  • Status: Active Grant
First Claim
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1. A system comprising:

  • an implantable medical device, the implantable medical device comprising;

    at least one electrical input, to receive sensed electrical activity of a heart;

    a sampler circuit, coupled to the at least one electrical input, operable to generate sampled values of the sensed electrical activity;

    a clock circuit, the clock circuit operable to generate readable values representative of time;

    a memory, including an event marker buffer; and

    a controller circuit, coupled to the sampler circuit, the clock circuit, and the memory, the controller circuit operable to process the sampled values to generate at least one marker to indicate a detected event related to the sensed electrical activity, and wherein the controller circuit is operable to read a clock circuit value as a timestamp representative of absolute time, the timestamp indicating when the detected event occurred, and the controller circuit also operable to store the at least one marker with the timestamp in the event marker buffer of the memory.

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