Sub-rate time switch
US5287350A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 1991 |
| Grant date | Feb 15, 1994 |
| Priority date | — |
| Expiry date | Sep 27, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q11/08
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A sub-rate time switch switches a digital multiplexed signal having a basic-rate signal included in a first time slot of the digital multiplexed signal and N sub-rate signals included in a second time slot thereof where N is an integer. Each the sub-rate signals has a sub-rate which is equal to 1/N times a basic rate of the basic rate signal. A speech path memory temporarily stores the digital multiplexed signal input to the sub-rate time switch. A channel signal is read out from the speech path memory and has a plurality of channels corresponding to time slots of the digital multiplexed signal. A control part controls write and read operations of the speech path memory so that the channel signal includes N consecutive channels. Each of the N consecutive channels includes N identical sub-rate signals, and each of the N identical sub-rate signals corresponds to one of the N sub-rate signals included in the second time slot of the digital multiplexed signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.