Endoscope having picture image freeze device

Details Endoscope having picture image freeze device Endoscope having picture image freeze device

1989-08-23

1991-04-16

Grieb, William H.

Surgery

Truss

Perineal

358 98, A61B 104, A61B 106

Patent

active

050074075

ABSTRACT:
An endoscope including a scope, in which a light source emits at least one light pulse locating in a boundary portion of adjacent first and second fields, and a photoelectric device detects image signals from the light pulse, and wherein a processor determines a difference between first and second field illuminances of the light pulse from the image signals, and a controller controls, depending on the difference, to reduce the difference to at least a certain value to obtain a frozen picture image having a high resolving power without causing a flicker therein.

REFERENCES:
patent: 4740837 (1988-04-01), Yanagisawa et al.

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