Method and circuit for controlling the operating point of a vide

Details Method and circuit for controlling the operating point of a vide Method and circuit for controlling the operating point of a vide

1987-01-29

1988-08-09

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

358 29, 358 65, 358219, H01J 2952, H01J 102

Patent

active

047630485

ABSTRACT:
When controlling the working point of video output stages in monitors, data display cathode ray tubes (CRTs) (10) and the like, in which the scanning raster is applied to the screen of the CRT entirely on the visible portion of the screen, and to permit control of the working point of the video output stage by strobing the beam current at a high brightness level, the vertical deflection of the beam during not-needed lines is so controlled that the beam is deflected beneath a still remaining frame or beyond the phosphor layer of the screen. The deflection is obtained by an additional auxiliary deflection pulse derived, for example, from a monostable multivibrator (45) receiving a pulse close to the beginning of the selected line, and superimposing its pulse to the deflection of the deflection current for the vertical coil 42.

REFERENCES:
patent: 4340904 (1982-07-01), Wingrove, Jr.
patent: 4404409 (1983-09-01), Ryan
patent: 4723158 (1988-02-01), White

Affiliated with

Also associated with

Rating

Method and circuit for controlling the operating point of a vide does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and circuit for controlling the operating point of a vide, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and circuit for controlling the operating point of a vide will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-920249