Electric lamp and discharge devices: systems – Cathode ray tube circuits – Cathode-ray deflections circuits
Patent
1979-03-27
1980-10-28
Blum, Theodore M.
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Cathode-ray deflections circuits
315 31TV, H01J 2958
Patent
active
042309727
ABSTRACT:
Dynamic focus circuitry for a CRT data display terminal provides high resolution even in the corners of the screen by means of a dynamic focus voltage which is the product of parabolic waveforms at horizontal line rate and vertical frame rate. The non-linear characteristic of a diode provides the product function at minimum expense.
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Blum Theodore M.
Gillman James W.
Motorola Inc.
Parker Margaret Marsh
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