05084911 is referenced by 12 patents and cites 14 patents.

A phototimer for controlling x-ray exposure includes an array of x-ray sensors, and digital processing electronics for calculating x-ray exposure by selecting one or more signals from the x-ray sensors, and calculating the x-ray exposure from the selected signals. After calculating the x-ray exposure, the calculated exposure is employed to control the x-ray exposure either by displaying the calculated exposure to an operator who compares the calculated exposure with a desired exposure and repeats the exposure if necessary, or by automatically terminating the exposure by sending a control signal to the x-ray source. The improvement in the state of x-ray phototimer technology resides in the automatic selection of a subset of signals from a plurality of photosensors, thereby improving the reliability of the measurement. In prior art devices, the signals from a plurality of sensors were either selected manually by a switch, or all employed in a predetermined algorithm.

Title
X-ray phototimer
Application Number
7/295616
Publication Number
5084911
Application Date
January 10, 1989
Publication Date
January 28, 1992
Inventor
Lee F Frank
Rochester
NY, US
William E Moore
Macedon
NY, US
Ralph Schaetzing
Pittsford
NY, US
Muhammed I Sezan
Rochester
NY, US
Agent
William F Noval
Assignee
Eastman Kodak Company
NY, US
IPC
H05G 1/38
View Original Source