Method and device for setting the static convergence and/or purity of a color television tube
US4896071A · kind A · utility
6Cited by
15References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 12, 1987 |
| Grant date | Jan 23, 1990 |
| Priority date | — |
| Expiry date | Nov 12, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J29/703
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method is disclosed for the setting of the static convergence and/or purity of a color television tube using permanent magnets. Magnetizable elements are fixed around the color television tube. These elements are evenly distributed around the axis of the tube. To correct the static convergence and/or purity errors, each element is magnetized by means of a corresponding coil, the position and dimensions of which are such that the element is subjected solely to the field within the turns of the coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.