Apparatus and method for transmitting binary-coded information
US4027152A · kind A · utility
92Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 28, 1975 |
| Grant date | May 31, 1977 |
| Priority date | — |
| Expiry date | Nov 28, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/49
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An apparatus is disclosed for transmitting binary-coded information over a fiber-optic link which provides a link monitor to indicate whether the fiber-optic link is intact and operating. The binary-coded information is translated into a pulse-coded signal which provides a positive pulse for a positive-going transition in the binary signal and a negative pulse for a negative-going transition in the binary signal. In addition, a refresh pulse of the same polarity as the preceding pulse is provided whenever there has been no pulse for a predetermined amount of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.