Data derandomizer for radiation imaging detection systems and me

Details Data derandomizer for radiation imaging detection systems and me Data derandomizer for radiation imaging detection systems and me

1974-09-06

1977-07-12

Shaw, Gareth D.

Boots, shoes, and leggings

346 33B, G06F 305

Patent

active

040357767

ABSTRACT:
A data derandomizer for use in a scintillation imaging system. The imaging system produces data signals representing radiation events and presents them to a continuously operating video tape recorder for recording and subsequent playback to an imaging apparatus. The recorder can accept the data signals only in discrete time slots. The digital signals are produced in response to radiation events occurring randomly in time and therefore also occur at random time intervals. A data stacking circuit provides for receipt and simultaneous storage of several data signals between the detector and the recorder, the storage being in priority levels according to the order of occurrence of the data signals. Inventory control circuitry controls the stacking circuit to present the data signals to the recorder synchronously with the time slots, notwithstanding the random occurrence of the data signals. The storage capacity of the stacking system reduces loss of data which would otherwise result from the occurrence of data signals at intervals spaced more closely than those of the time slots. The data stacking also enables the accumulation of several data signals which can be presented to the recorder in the regularly spaced time slots, reducing recorder down time when closely spaced data signals are followed by relatively widely spaced data signals.

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