Pacer pulse width signaling system for telephonic communication

Details Pacer pulse width signaling system for telephonic communication Pacer pulse width signaling system for telephonic communication

1976-09-08

1978-05-02

Claffy, Kathleen H.

Surgery

Truss

Pad

128 21A, H04M 1100, A61B 502

Patent

active

040876373

ABSTRACT:
A system for providing a signal suitable for transmission by telephone equipment to indicate the duration of pulses produced by a heart pacer. The system includes a pickup for detecting pacer pulses and a switched circuit responsive to pulse duration for applying charge to a first capacitor. During the inter-pulse period a second or reference capacitor is charged to a level corresponding to that of the first capacitor though a timed switching circuit, after which another timed switching circuit discharges the first capacitor to prepare it for receiving a subsequent charge. The potential accumulated upon the second capacitor is then used to operate an output stage pulse generator which controls the duration of an audio-frequency tone burst.

REFERENCES:
patent: 3426150 (1969-02-01), Tygart
patent: 3742938 (1973-07-01), Stern
patent: 3986496 (1976-10-01), Brastad

Affiliated with

Also associated with

Rating

Pacer pulse width signaling system for telephonic communication does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pacer pulse width signaling system for telephonic communication, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pacer pulse width signaling system for telephonic communication will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2159679