Patent ID: 7171274

Claim:
A method of communicating between medical system components, comprising: providing an ambulatory medical device (MD) for treating or monitoring a selective state of a body of a patient, the ambulatory medical device having an MD electronic control circuitry with at least one MD telemetry system and at least one MD processor; controlling, with the MD processor, at least part of the operation of the MD telemetry system and of the ambulatory medical device; providing a communication device (CD) for sending messages to or receiving messages from the MD telemetry system, the communications device having CD electronic control circuitry with at least one CD telemetry system and at least one CD processor; controlling, with the CD processor, at least part of the operation of the CD telemetry system and of the communication device; and modifying at least one portion, but not all, of at least one message with at least one of the MD processor and the CD processor, in preparation for transmission by the medical device or the communication device such that a higher number of bit transitions occur in the at least one modified portion than were found in corresponding at least one portions prior to being modified.