FSK Coding method and apparatus involving multiples and submultiples of a given frequency
US4569060A · kind A · utility
9Cited by
9References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 1983 |
| Grant date | Feb 4, 1986 |
| Priority date | — |
| Expiry date | Aug 31, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/06
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for coding a data signal for transmission and reception which includes the steps of generating a prefix signal which is a train of pulses at a multiple or submultiple of a selected baseband frequency, then generating a data stream following said prefix with the data stream having one binary state transmitted at said baseband frequency and the other transmitted at another frequency. The data stream is terminated with a suffix having a waveform different from that of the two binary states.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.