Apparatus and method for quantifying irregularities in interfere

Details Apparatus and method for quantifying irregularities in interfere Apparatus and method for quantifying irregularities in interfere

1977-02-14

1979-02-20

Griffin, Robert L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

356345, 358139, H04N 702

Patent

active

041410386

ABSTRACT:
Apparatus and methods are herein disclosed for use in conjuction with a standard monochrome closed-circuit television system for the generation, display, and manipulation of geometrical patterns upon the screen of the video monitor for the purpose of quantifying the irregularities in an interference pattern displayed on the screen of the video monitor. The invention comprises, in one embodiment, a control unit connected between the television camera and the video monitor of a standard closed circuit television system. The control unit includes the control means, switches, and electronic circuitry for the generation, manipulation, and control of video signals which are superposed onto the video signals from the camera and which are to be displayed on the screen of the video monitor. By manipulating the geometrical pattern generated by the control unit to conform to that of the interference fringe pattern transduced by the television camera, the errors which are manifest as irregularities in the interference fringe pattern can be measured.

REFERENCES:
patent: 3199400 (1965-08-01), Zabinski
patent: 3644046 (1972-02-01), Ryan
patent: 3678192 (1972-07-01), Akuta et al.
patent: 3967054 (1976-06-01), Walton
patent: 3967903 (1976-07-01), Enami et al.

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