Emission control in a video display
US6483557B1 · kind B1 · utility
1Cited by
8References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 5, 1999 |
| Grant date | Nov 19, 2002 |
| Priority date | — |
| Expiry date | Nov 5, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/68
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Unintentional emissions are controlled responsive to the spectral content of the display signal. A video display apparatus comprises a cathode ray tube responsive to a video signal. A processor controls a bandwidth of the video signal coupled to the cathode ray tube in response to an emission control signal. A generating device is coupled to the processor for generating the emission control signal responsive to a component of the video signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.