Method of detecting blemishes in the phosphor screen on a kinesc

Details Method of detecting blemishes in the phosphor screen on a kinesc Method of detecting blemishes in the phosphor screen on a kinesc

1986-06-13

1987-06-23

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358101, H04N 718

Patent

active

046757295

ABSTRACT:
In a method of detecting blemishes in the phosphor screen on the inside surface of a kinescope faceplate while simultaneously avoiding detecting deposits on the outside surface of the faceplate as blemishes, the faceplate is arranged between a light source and a light detector in an orientation wherein light from the light source passes through the faceplate and subsequently through the phosphor screen prior to reaching the detector.

REFERENCES:
patent: 4454541 (1984-06-01), Duschl
patent: 4454545 (1984-06-01), Duschl
patent: 4542404 (1985-09-01), Duschl
patent: 4575751 (1986-03-01), Duschl
patent: 4605960 (1986-08-01), Cohen
patent: 4625237 (1986-11-01), Cohen

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