Process for the sampling of an electric signal varying over time

Details Process for the sampling of an electric signal varying over time Process for the sampling of an electric signal varying over time

1988-02-25

1989-09-05

Lall, Parshotam S.

Boots, shoes, and leggings

324 77R, 341137, 356 731, 364550, 364557, G01R 1334, G01M 1100

Patent

active

048645222

ABSTRACT:
In a process for the sampling of an electric signal changing over time, an electron beam (12) is deflected laterally and linearly over time and at the same time modulated in its intensity according to the instantaneous amplitude of the electric signal. The electron beam (12) generates on a fluorescent screen (14) a brightness-modulated bar of light, which is preferably sampled with a sensor (15) arranged ahead of the fluorescent screen (14) in the form of a CCD line camera having a linear array of sensor elements (15a, b, c).
The read-out analog sampled values of the sensor (15) are subsequently digitized and further processed.
The advantage of the process is its high broad-bandedness and resolution and the capability of being able to carry out an averaging without additional expenditure of time.

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patent: 4760257 (1988-07-01), Pollack et al.
patent: 4767207 (1988-08-01), Takiguchi
Bell System Tech. Jour., vol. 56, No. 3 (3/77); "Photo Probe-an Optical Fiber Time-Domain Reflectometer"; Personick, S. D.; pp. 355-367.
Elect. Letters, vol. 21, No. 13 (6/85); "Distributed Optical Fibre Raman Temperature. . . "; pp. 569-570.
Jour. Elect. Eng. vol. 23, No. 236 (8/86); "Otdr Makes Breakthrough in Accuracy and Dynamic Range"; Kitagawa, K.; pp. 62-65.
EG&G Reticon Application Notes, No. 101; (1975) "Application of Reticon Photodiode Arrays as Electron and X-Ray Detectors"; pp. 165-168.

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