DSP with variable sample frequency

Details DSP with variable sample frequency DSP with variable sample frequency

2007-11-06

2007-11-06

Jeanglaude, Jean Bruner (Department: 2819)

Coded data generation or conversion

Sample and hold

Having variable sampling rate

C607S016000, C607S057000, C607S140000, C607S005000

Reexamination Certificate

active

11320358

ABSTRACT:
An implantable medical device uses a sampling scheme to obtain digital representation from analog signals. The analog signals represent intracardiac activity. Generally, a detector detects the amplitude of the analog signals and generates first and second difference signals. The first difference signal is generated after detection of significant changes in the analog signal amplitude. The second difference signal is generated upon confirmation of the absence of significant changes in the analog signal amplitude over a predetermined period of time. A frequency selection is implemented to select the sampling frequency based on the first and second difference signal.

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