Programmable pulse generating system

Details Programmable pulse generating system Programmable pulse generating system

1978-09-25

1981-03-10

Wise, Edward J.

Boots, shoes, and leggings

364580, 364413, G01R 1320

Patent

active

042557909

ABSTRACT:
This system generates output pulses in successive periods of time, each including sub-intervals during which the output pulses may be varied in accordance with a pre-determined scheme. The time periods and sub-intervals within the periods are defined by means of signals derived from a fundamental clock frequency generation circuit and first and second parallel sets of frequency division circuits connected to the fundamental frequency generation circuit. The first set of frequency division circuits is used together with a sub-interval timing circuit to define the sub-intervals of time included in each period. A system control means is connected to the frequency generation and division circuits, the timing circuits, a means for entering information into the system defining the periods and sub-intervals and the characteristics of output waveforms to be produced in each sub-interval, and to a variable electrical signal generation means which produce the output waveforms in accordance with the information entered into the system. Since the time periods, sub-intervals and output waveforms are all variable in accordance either with a pre-determined scheme, or on a real time basis depending on response of a subject under test, this system may be used to generate complex strings of waveforms especially suitable for measuring responses of biological samples to stimulation by electrical signals in pharmacological, physiological and other biomedical applications.

REFERENCES:
patent: 3449721 (1969-06-01), Dertouzos et al.
patent: 3659087 (1972-04-01), Green et al.
patent: 3764995 (1973-10-01), Helf, Jr. et al.
patent: 3931506 (1976-06-01), Borrelli et al.
patent: 4055801 (1977-10-01), Pike et al.
patent: 4065664 (1977-12-01), Kristof et al.
patent: 4104725 (1978-08-01), Rose et al.
patent: 4158884 (1979-06-01), McKinley et al.

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