Digital analog signal demodulator
US5097222A · kind A · utility
1Cited by
2References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 18, 1991 |
| Grant date | Mar 17, 1992 |
| Priority date | — |
| Expiry date | Jul 18, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D1/00
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
There is disclosed a system and method for demodulating an analog signal using digital conversion of the analog signal. In one embodiment the incoming modulated signal is digitally sampled and a calculation is made as to both the short term and long term energy of the digitized version of the analog signal. The deviation between the short and long term energy levels is used to determine the amount of modulation of the incoming analog signal. An analog demodulated signal is then reconstructed from the digitized deviation calculations. In an alternate embodiment, a digital signal processor is used to derive the demodulated signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.