Compensation of CRT deflection errors with fourfold symmetrical magnet systems
US6388402B1 · kind B1 · utility
3Cited by
5References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 7, 1999 |
| Grant date | May 14, 2002 |
| Priority date | — |
| Expiry date | Oct 7, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2229/5682
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Color picture display device comprising a cathode ray tube and a deflection unit. The picture display device comprises compensation means for compensating picture errors. The compensation means is arranged on a side of a deflection unit facing the display screen and comprises four magnet systems which are arranged fourfold symmetrically with respect to the tube axis and extend through an angle &agr; ranging between 24 and 34 degrees or between 40 and 48 degrees.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.