CRT display with truncated Rho-Theta presentation

Details CRT display with truncated Rho-Theta presentation CRT display with truncated Rho-Theta presentation

1976-05-19

1977-11-22

Wilbur, Maynard R.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315387, 343 5W, H01J 2978

Patent

active

040597857

ABSTRACT:
In a CRT display exhibiting a Rho-Theta format where certain of the lines would normally extend beyond the edges of the CRT screen, feedback signals from at least a deflection coil are used to terminate display lines at the edge of the screen and to initiate immediate retrace. Compensation is applied to at least a deflection voltage to compensate for display line bunching caused by unequal scan line times.

REFERENCES:
patent: 3885237 (1975-05-01), Kirkpatrick
patent: 3975662 (1976-08-01), Janosky

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