Exposure anticipation circuit

Details Exposure anticipation circuit Exposure anticipation circuit

1986-02-10

1988-06-28

Church, Craig E.

X-ray or gamma ray systems or devices

Electronic circuit

Exposure timer

378098, A61B 0600, G03B 4204, H05G 0128, H05G 0160

Patent

active

047544708

ABSTRACT:
A method and apparatus for reducing delay times between successive x-ray images in a medical x-ray diagnostic system in which delay times are a function of the time required to transport film in a camera apparatus. The camera is used to record images on an image display apparatus. The delay time is reduced by determining the time at which an image on the apparatus will reach a predetermined intensity level and initiating the camera film transport cycle at a predetermined time prior to the image reaching the predetermined intensity level. Apparatus is disclosed for determining the rate of image development and for providing a signal to initiate the camera film transport at a fixed time prior to completion of image development regardless of the rate of image development. The predetermined time period is selected such that actual film motion is not initiated until the image is fully developed on the image display apparatus.

REFERENCES:
patent: 3243591 (1966-03-01), Lesnick et al.
patent: 3491239 (1970-01-01), Dalman
patent: 3546461 (1970-12-01), Craig
patent: 3783286 (1974-01-01), Kremer
patent: 4464779 (1984-08-01), Finkenzeller

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