Electric lamp and discharge devices: systems – Cathode ray tube circuits – Cathode-ray deflections circuits
Patent
1994-08-03
1996-01-23
Issing, Gregory C.
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Cathode-ray deflections circuits
H01J 2958
Patent
active
054867410
ABSTRACT:
A dynamic focus amplifier, comprising: a first circuit responsive to a vertical rate sawtooth waveform for generating at the vertical rate a modulating waveform having a desired component of a given shape during trace intervals and an undesired time compressed version of the given shape during retrace intervals; a second circuit responsive to the sawtooth waveform for generating a pulse waveform at the vertical rate, substantially corresponding in width and phase to a vertical retrace blanking waveform; and, a differential amplifier stage, formed by Darlington pairs, for combining the modulating waveform and the pulse waveform to remove the undesired time compressed version of the given shape from the modulating waveform. The second circuit may comprise a capacitor which is charged in a first direction by the sawtooth waveform during vertical trace and charged in an opposite direction during vertical retrace.
REFERENCES:
patent: 5341071 (1994-08-01), George
patent: 5430358 (1995-07-01), George
Fried Harvey D.
Issing Gregory C.
Laks Joseph J.
Thomson Consumer Electronics Inc.
Tripoli Joseph S.
LandOfFree
Waveform correction circuit for dynamic focus amplifier does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Waveform correction circuit for dynamic focus amplifier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Waveform correction circuit for dynamic focus amplifier will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1506752