Apparatus responsive to plural color video signals for amplitude

Details Apparatus responsive to plural color video signals for amplitude Apparatus responsive to plural color video signals for amplitude

1983-12-29

1986-07-08

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 65, H04N 920, H04N 916

Patent

active

045996431

ABSTRACT:
Excessive peak beam currents conducted by a kinescope in a color television receiver are limited by apparatus which compares the combined instantaneous magnitudes of plural color signals with a fixed threshold and, if exceeding the threshold, the combined signal is detected. The detected signal is used to limit the magnitudes of the color signals, thereby limiting excessive kinescope beam currents otherwise developed in response to the color signals. The apparatus is used in the receiver together with a more conventional automatic kinescope beam current limiter of the type which operates in conjunction with a kinescope resupply current source.

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Technical Bulletin, "Digit 2000 VLSI Digital TV System" ITT Semiconductor Division, pp. 3-6 and 3-7, Publication Order-No. 6251-190-3E, Apr. 1983.

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