Digital gain adjustment
US4745411A · kind A · utility
2Cited by
15References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 29, 1986 |
| Grant date | May 17, 1988 |
| Priority date | — |
| Expiry date | Oct 29, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N17/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A cathode ray tube (CRT)/deflection coil assembly is provided which includes a signature resistor for indicating the deflection sensitivity of the deflection coil. An amplifier circuit with an adjustable gain supplies current to the deflection coil. A gain adjustment circuit measures the value of the signature resistor and provides a signal to the amplifier which varies the gain of the amplifier to compensate for variations in the deflection sensitivity of different deflection coils.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.