Telecommunications interface for unified handling of varied analog-derived and digital data streams
US5515373A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 1994 |
| Grant date | May 7, 1996 |
| Priority date | — |
| Expiry date | Jan 11, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/40
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A low-cost yet high-performance, moderate bandwidth (up to 2 Mbps) global telecommunications interface to new and existing computers allows high-performance, low-cost telecommunications platforms to support global fax, data, voice, and other data streams in an intuitive way. The telecommunications interface provides a very low-cost solution to international connectivity for a broad class of existing computers while providing high-performance wide-area data transfer. Convenient and reliable global communications over the phone line may thus be achieved. From a rudimentary viewpoint, the telecommunications interface provides for an elegant, economical implementation of a fax/data modem. The telecommunications interface provides both a time-division multiplexed interface mode for constant bit rate communications and a packetized interface mode for variable bit rate communications. Multiple streams of digital and/or analog-derived data may be handled simultaneously. DMA and non-DMA interface mode am provided in order to achieve compatibility with a broad range of existing and new computers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.