Television pick-up system

Details Television pick-up system Television pick-up system

1978-01-19

1979-07-17

Griffin, Robert L.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358111, 358221, H04N 5197

Patent

active

041617550

ABSTRACT:
In television transmission of medical X-ray photographs and in television X-ray fluoroscopy (e.g. during surgery), where a great brightness contrast range is presented, the illustrated system obtains a blurred video signal representative of the brightness of relatively large regions of the visible light image and adjustably selects high amplitude parts of such signal to synchronously modulate the scanning electron beam of a storage type television camera tube. In this way darker image areas are transmitted with full contrast for reproduction of fine image details as particularly required in medical X-ray technology, while excessively bright areas are attenuated to a desired degree.

REFERENCES:
patent: 3287496 (1966-11-01), Webb
patent: 3584146 (1971-06-01), Cath et al.
patent: 3691302 (1972-09-01), Gaebele et al.

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