CRT device light versus input signal characteristic function

Details CRT device light versus input signal characteristic function CRT device light versus input signal characteristic function

1988-09-01

1989-08-29

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358164, 358903, H04N 1704

Patent

active

048622656

ABSTRACT:
The present invention is a system and a method for measuring and then predicting the light output from a cathode ray tube device as a function of the input signal to the device. An input signal series is selected and a table is formed indicating the light output level for each signal input level. Parameters of a characteristic equation are then determined by a regression and an automatic or manual optimization process. The optimum values of these parameters (units-converter constant, gain, offset, and gamma) are then used to predict the light output from the measured device.

REFERENCES:
patent: 4386345 (1983-05-01), Narveson et al.

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