Display device with dynamic focus circuit
US5886482A · kind A · utility
4Cited by
8References
5Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Oct 6, 1997 |
| Grant date | Mar 23, 1999 |
| Priority date | — |
| Expiry date | Oct 6, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N3/26
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display device for suppressing focus dislocation due to high voltage fluctuation and realizing a dynamic focus circuit with large output at low power consumption and low cost, in which a circuit for detecting high voltage fluctuation is provided, and the dynamic focus waveform is clamped, and the waveform of horizontal cycle is clipped during the retrace time, and a boot strap circuit including an emitter follower, DC feedback circuit, and capacitor is provided as an output circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.