Device for correcting the ramp linearity of saw-tooth signals

Details Device for correcting the ramp linearity of saw-tooth signals Device for correcting the ramp linearity of saw-tooth signals

1996-08-23

1998-09-29

Issing, Gregory C.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315403, 327133, G09G 104, H01J 2970, H03K 490

Patent

active

058149520

ABSTRACT:
A device for correcting the linearity of ramps of a saw-tooth signal provided across a capacitor, charged by a first current source and periodically discharged at a desired frequency. The device modulates the charging current of the capacitor by a correction current to render the ramps of the signal not linear. In addition, the device includes circuitry to render the correction current proportional to the current provided by the first current source.

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patent: 4739228 (1988-04-01), Viscardi et al.
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patent: 4887011 (1989-12-01), Haynie
patent: 4972127 (1990-11-01), Rodriguez-Cavazos et al.
patent: 5502410 (1996-03-01), Dunn et al.
French Search Report from French Patent Application No. 95 10186, filed Aug. 24, 1995.
Electronic Engineering, vol. 60, No. 744, Dec. 1988, pp. 25/26, 28, and 30, Ligertwood, P.J. "A Digitally Controlled Colous TV Chip With Integrated Video Filters".

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