Frequency shift demodulator
US5015961A · kind A · utility
2Cited by
1References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 3, 1990 |
| Grant date | May 14, 1991 |
| Priority date | — |
| Expiry date | Aug 3, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/148
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The invention improves the ability of the FS demodulator-circuit of an FS digital transmission system so as to withstand noise with low error count. The invention uses two different types of all pass networks and a phase measuring circuit to average random noise and enhance the desired FS frequencies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.