Apparatus for reconstructing and multiplexing frames of various origins made up of a variable number of packets of fixed length
US4885744A · kind A · utility
Inventors
Key dates
| Filing date | Jun 14, 1988 |
| Grant date | Dec 5, 1989 |
| Priority date | — |
| Expiry date | Jun 14, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L49/103
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The apparatus is designed to use a single transmission medium to multiplex frames consisting of any number of bits of different origins which have previously passed through an asynchronous time-division network and are delivered in the form of packets of fixed length interlaced by an asynchronous time-division multiplex. A detection and write management circuit receives the packets and writes them in a packet memory as and when they arrive. In parallel with the writing of the packets, the addresses of the memory cell having memorized the packets of a given frame are written in the form of a string of frame addresses in a second memory. After complete writing of a frame in the first memory, a frame read and transmission circuit completely reads the frame using the corresponding address string and transmits it in serial form on the transmission medium. Packing words such as flags are inserted between the frames read.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.