Measuring Hum in a digital TV signal
US8189651B2 · kind B2 · utility
1Cited by
11References
20Claims
0Family size
Inventors
Key dates
| Filing date | Mar 27, 2009 |
| Grant date | May 29, 2012 |
| Priority date | — |
| Expiry date | Sep 28, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B17/21
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention relates to a method for measuring Hum on a digital QAM carrier using a testing device for testing digital TV signals including a QAM demodulator therein, and to a testing device implementing the method. A micro-controller is used to sample a register associated with an AGC circuit in the QAM demodulator, and to process the collected register values to obtain one or more Hum characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.