Low-power delta modulator for intracardial signal monitoring in

Details Low-power delta modulator for intracardial signal monitoring in Low-power delta modulator for intracardial signal monitoring in

1995-01-27

1996-11-12

Kamm, William E.

Surgery

Truss

Pad

607 16, 341164, A61B 50402

Patent

active

055730035

ABSTRACT:
A low-power delta modulator analog-to-digital converter is provided that is suitable for use in a cardiac stimulating device for monitoring intracardial signals. The delta modulator consumes less power than previously available delta modulators because portions of the delta modulator circuitry are shut down when the signal to be digitized is not rapidly varying. The device uses slow clock pulses for sampling the input signal and subsequently digitizes the sampled signal using a faster clock. After a sampled signal has been digitized, the result is held until the next slow clock pulse. Power consumption is reduced since the delta modulator does not draw substantial amounts of power during this holding period. Further, the output of the delta modulator reflects the magnitude of the change in the analog input, with a separate bit for representing direction. Thus, when the input signal remains constant from one slow clock pulse to the next, the delta modulator does not draw significant power even on that next slow clock pulse.

REFERENCES:
patent: 3228025 (1966-01-01), Welch
patent: 3495073 (1970-02-01), James
patent: 3795900 (1974-03-01), Monford, Jr.
patent: 3868679 (1975-02-01), Arneson
patent: 4031532 (1977-06-01), First
patent: 4097860 (1978-06-01), Araseki et al.
patent: 4509529 (1985-04-01), Money et al.
patent: 4528549 (1985-07-01), Simpson
patent: 4573037 (1986-02-01), Robinton et al.
patent: 4768018 (1988-08-01), Noujaim
patent: 4940982 (1990-07-01), Gulczynski
patent: 5014284 (1991-05-01), Langer et al.
patent: 5022395 (1991-06-01), Russie
patent: 5084704 (1992-01-01), Parrish
patent: 5373292 (1994-12-01), Yasuda
patent: 5458122 (1995-10-01), Hethuin

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