Digital communication terminal equipment
US5134612A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 2, 1990 |
| Grant date | Jul 28, 1992 |
| Priority date | — |
| Expiry date | Jan 2, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S370/914
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A digital communication terminal equipment is coupled between one or a plurality of low-speed group transmission paths and one or a plurality of high-speed group transmission paths. The digital communication terminal equipment comprises a reference part and a supervised part coupled between selected low-speed group transmission paths and high-speed group transmission paths depending on states of first and second switches, and a bit comparison supervision part for detecting a bit error in a transmission signal which is transmitted between the low-speed group transmission path and the high-speed group transmission path. The reference part has a demultiplexer circuit which demultiplexes a high-speed group signal which is received from the high-speed group transmission path via the second switch into a low-speed group signal, a memory for storing the low-speed group signal from the demultiplexer circuit in response to a write clock signal which is multiplexed within the high-speed group signal, a phase locked loop circuit which includes a voltage controlled oscillator and controls a read out from the memory in response to a read clock signal which is derived by smoothing the write cloc…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.