Driving circuit apparatus for CRT

Details Driving circuit apparatus for CRT Driving circuit apparatus for CRT

1992-07-21

1994-03-08

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

358518, H01J 2952

Patent

active

052931013

ABSTRACT:
In a driving circuit apparatus, an input video signal is logarithmically compressed via the logarithmic converting means and outputted to the exponential converting means of the next stage. The exponential converting means outputs the inputted input video signal upon inverse logarithmically converted, to the driving means which controls the image receiving tube. Since the input video signal is logarithmically compressed via the logarithmic converting means, although in case of being inputted the high frequency input video signal for high resolution, the slewing rate does not increase, and accordingly, the wideband pre-drive circuit can be more easily built in the IC.

REFERENCES:
patent: 4893178 (1990-01-01), Matama et al.
patent: 5087966 (1992-02-01), Harradine

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