Article inspection by successively televised images

Details Article inspection by successively televised images Article inspection by successively televised images

1975-03-14

1976-09-28

Griffin, Robert L.

Telegraphy

Systems

Simplex-reversing periodic

178DIG1, 178DIG33, H04N 700

Patent

active

RE0289841

ABSTRACT:
A liquid-filled transparent container is spun momentarily to cause the liquid therein to swirl, and successive video frames provide voltage analogs through a television camera. A memory device is synchronized with the camera and stores at least one of the voltage analogs so that a comparator can subtract one successive analog signal from another to generate an error signal if foreign particles are present in the swirling liquid.

REFERENCES:
patent: 2244826 (1941-06-01), Cox
patent: 2493543 (1950-01-01), Merchant
patent: 2803406 (1957-08-01), Nuttal
patent: 3049588 (1962-08-01), Barnett
patent: 3216311 (1965-11-01), Bibbero et al.

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