PCM signal transmission system
US4703494A · kind A · utility
8Cited by
8References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 8, 1984 |
| Grant date | Oct 27, 1987 |
| Priority date | — |
| Expiry date | Mar 8, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/044
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In transmission of PCM signals resulting from sampling and quantizing analog signals, the PCM signals are modulated according to a desired rule of modulation and a synchronizing interval is provided for every given interval of time, the synchronizing interval being longer than a level change interval as determined by the modulation rule. The synchronizing interval is followed by a level reversal interval which is approximately equal to the longest level change interval as determined by the modulation rule.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.