Digital FSK demodulator
US5155446A · kind A · utility
8Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 14, 1991 |
| Grant date | Oct 13, 1992 |
| Priority date | — |
| Expiry date | Nov 14, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/122
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Digital FSK demodulators to be used in the telephone environment are disclosed. The demodulator according to one embodiment uses the sequential processing of a digital signal encoded in the fractional two's complement numeric representation. The use of multipliers is largely eliminated, thus enabling extensive use of simple shift registers and adders. Consequently the hardware complexity requirement is greatly reduced, thus resulting in very low cost products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.