Blanking voltage generator for a cathode ray tube
US4237479A · kind A · utility
8Cited by
1References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 16, 1979 |
| Grant date | Dec 2, 1980 |
| Priority date | — |
| Expiry date | Mar 16, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/72
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Apparatus is disclosed for generating a blanking voltage for electron guns in cathode ray tubes, as used, for example, in color television displays. Apparatus utilizes circuitry including a video voltage amplifier having a control input. A feedback loop, connected between the junction of the cathode and video voltage amplifier output at one terminal, and the control input at the other, modifies the blanking voltage in response to samples of the cathode current taken when the video signal is zero.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.