Electric lamp and discharge devices: systems – Cathode ray tube circuits
Patent
1995-11-02
1997-09-30
Pascal, Robert
Electric lamp and discharge devices: systems
Cathode ray tube circuits
3153821, H04N 521
Patent
active
056729391
ABSTRACT:
The present invention provides a horizontal (H) position modulator circuit for adjusting the horizontal impingement location of the electronic beam of a predetermined scan line and a vertical (V) position modulator circuit for adjusting the vertical impingement location of the electronic beam of a predetermined scan field. The H-position modulator, which is coupled to the H-position control circuit existing in the conventional color display device, responsive to the H-MOIRE control signal, changes the relative timing relation of horizontal synchronization signal to the video signals via the horizontal deflection circuit. The H-positions of electronic beam impingement of the predetermined scan lines are therefore adjusted. The V-position modulator, which is coupled to the V-position control circuit existing in the conventional color display device, responsive to the V-MOIRE control signal, changes the current flowing through the vertical deflection coil. The V-positions of electronic beam impingement of the predetermined scan field are therefore adjusted.
REFERENCES:
patent: 5430502 (1995-07-01), Yamazaki et al.
patent: 5440353 (1995-08-01), Yamazaki et al.
Millman, J., Microelectronics: Digital and Analog Circuits and Systems, McGraw-Hill, Inc., 1979, p. 573.
Bettendorf Justin P.
Pascal Robert
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