Display and processor for time-varying electric signal

Details Display and processor for time-varying electric signal Display and processor for time-varying electric signal

1979-02-12

1981-05-12

Atkinson, Charles E.

Boots, shoes, and leggings

360 37, 346 33R, G06K 118

Patent

active

042675740

ABSTRACT:
A system for recording the magnitude of a time-varying electrical signal on a chart and for computing the integrals of various segments of the signal, includes operator actuated controls for providing the computer with the integration boundaries on the curve. As the signal is recorded on the chart, the value of its magnitude or its integral is also entered into a memory. To select a boundary the controls are actuated as a point on the recorded curve passes under a cursor. The computer is provided with the manually entered boundary signals and the related magnitude or integral signal at the same instant. To maintain synchronism between the stored signals provided to the computer and the boundary signals, the rate of motion of the chart is detected and used to control the rate of provision of the stored signals' values from the memory to the computer. This allows use of a low cost, variable speed chart drive.

REFERENCES:
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patent: 3784789 (1974-01-01), Broek
patent: 3803629 (1974-04-01), Walsh et al.
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patent: 3984662 (1976-10-01), Sorenson
patent: 4034209 (1977-07-01), Kashio
patent: 4038664 (1977-07-01), Muir

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