Multiplex equipment monitoring apparatus
US4567587A · kind A · utility
9Cited by
4References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 27, 1983 |
| Grant date | Jan 28, 1986 |
| Priority date | — |
| Expiry date | Dec 27, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J3/14
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Monitoring or error checking equipment for use with multiplexing circuitry at the transmission end of a communication line is disclosed which accomplishes a large reduction in circuitry by using transmitter generated low speed timing signals and clock signals to demultiplex the output data into nonsymmetrical or timing irregular data. The plurality of channels of nonsymmetrical data are then each checked for parity and framing pulses as well as clock activity by time multiplexed switching equipment on a cyclical basis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.