Bisdn compatible modem codec for digital information communication system
US5394439A · kind A · utility
73Cited by
5References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 12, 1991 |
| Grant date | Feb 28, 1995 |
| Priority date | — |
| Expiry date | Nov 12, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J2203/0037
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A modem/codec is designed for a digital signal transmission system using a single satellite transponder. The system is capable of transmitting data of a rate of 155.52 Mbps, and is thus compatible with the BISDN rate. A codec of rate 13/15 is used, and an octal phase shift keying modem is also used. In this way, the digital signal transmission system is capable of receiving data at a rate of 155.52 Mbps over a single INTELSAT V/VA transponder with a usable bandwidth of 72 MHz.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.