Method and apparatus for measuring a radio frequency signal having program information and control information
US6310646A · kind A · utility
34Cited by
10References
54Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 26, 1997 |
| Grant date | Oct 30, 2001 |
| Priority date | — |
| Expiry date | Nov 26, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/455
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed are method and apparatus which measure signal level of an RF signal. The measured RF signal includes a baseband signal modulated onto a first carrier signal having a first frequency and the baseband signal includes program information and control information. The method and apparatus digitize the RF signal which includes the baseband control information and determine a signal level measurement from the baseband control information in the digitized RF signal. Furthermore, method and apparatus are disclosed which determine from the digitized RF signal whether a tagging signal is present in the RF signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.