Digital data transmission system
US5351239A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 1992 |
| Grant date | Sep 27, 1994 |
| Priority date | — |
| Expiry date | Nov 16, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/14
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method is disclosed for transmitting super-rate data signals having a bit-rate higher than a predetermined bit-rate through a digital data transmission system normally providing channels having the predetermined bit-rate. The channels are subject to different propagation delay characteristics through the system. The method, comprises allocating a group of k channels in the data transmission system as a virtual channel for the transmission of the super-rate signals; dividing the super-rate signals into n sub-signals, where n.ltoreq.k, having a bit-rate equal to or less than the predetermined bit-rate; generating delay calibration signals for transmission through the data transmission system; defining an overhead channel in at least one of the channels; transmitting the n sub-signals over the channels; transmitting the delay calibration signals in a rotational pattern over the channels in slots normally containing data signals, the delay calibration signals temporarily displacing the data signals normally occupying the slots; transmitting the displaced data signals over the overhead channel in slots normally occupied by the delay calibration signals displacing them; and reassemblin…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.