Radiation transducing device with location identification

Details Radiation transducing device with location identification Radiation transducing device with location identification

1989-05-25

1991-04-23

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

2502062, H01J 4014

Patent

active

050102451

ABSTRACT:
A transducing device for sensing incident radiation includes an array of radiation sensitive elements, arranged in a matrix and interconnected to provide a plurality of interconnected rows and a plurality of interconnected columns of radiation sensitive elements. Comparator elements are connected to rows and columns of elements for comparing the magnitude of radiation received by the radiation sensitive elements to a predetermined threshold value. Encoding elements respond to outputs of the comparator elements for identifying radiation sensitive elements which have been exposed to radiation, including those elements where the radiation is maximum. The invention obviates the necessity of processing information from a large number of elements which do not hold useful information therein.

REFERENCES:
patent: 4214826 (1980-07-01), Uchida
patent: 4219845 (1980-08-01), Gibbons
patent: 4445030 (1984-04-01), Carlton
patent: 4465369 (1984-08-01), Saegusa
patent: 4491727 (1985-01-01), Appelbaum
patent: 4547677 (1985-10-01), Parker
patent: 4664495 (1987-05-01), Alyfuku
patent: 4672191 (1987-06-01), Cofield
The VLSL Design of a Two Dimensional Image Processing Array, by Dimokritos Panogiotopoulos et al., Microprocessing and Microprogramming. vol. 14, No. 3/4, Oct./Nov. 1984 (Amsterdam, NL).

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