Demodulation system for digital information
US3949313A · kind A · utility
115Cited by
8References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 28, 1974 |
| Grant date | Apr 6, 1976 |
| Priority date | — |
| Expiry date | May 28, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/0166
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A demodulation system for digital information, recorded by an FM or PM system, which provides a clock output pulse whose pulse width is proportional to the time length of the preceding bit frame and said clock output signal is utilized for demodulating the recorded data. Said pulse width can be controlled either by an analog or a digital circuit and thus, the present invention has the advantage that the information is demodulated stably though the moving speed of the recording medium is changed or deviated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.