Data transmission network interface unit
US4121217A · kind A · utility
18Cited by
7References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 6, 1976 |
| Grant date | Oct 17, 1978 |
| Priority date | — |
| Expiry date | Aug 6, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J3/12
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Disclosed is a data transmission network having an improved interface unit for matching the network to local subscriber loops. It is particularly constructed for the translation of supervisory signals in private and switched line systems. A switched channel logic circuit comprising an assembler and parallel to serial converter is provided for each data channel and these circuits connect to a common logic circuit comprising a combiner in the form of a shifter and a matrix of shift registers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.