Output-buffer switch for asynchronous transfer mode
US5455820A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 18, 1994 |
| Grant date | Oct 3, 1995 |
| Priority date | — |
| Expiry date | May 18, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/5683
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In an output-buffer switch for an asynchronous transfer mode, comprising a plurality of input buffer sections each for temporarily storing cells coming in through a respective input line, a time-division multiplexing section for time-division multiplexing the cells from the input buffer sections, and a plurality of output buffer sections each for temporarily storing the cells from the time-division multiplexing section which are meant for a respective output line, the output buffer sections each has a cell buffer, and a buffer occupancy ratio calculator which calculates an occupancy ratio of the cell buffer on the basis of the address information of the trailing and leading cells stored in the buffer. When the occupancy ratio exceeds a predetermined threshold, the calculator generates a buffer occupancy state signal. Each input buffer section has a buffer controller, an address filter, cell buffers, and a buffer selector. On receiving a buffer occupancy state signal from any output buffer section, the buffer controller controls the address filter, cell buffers and buffer selector such that cells addressed to the output buffer section, which is about to overflow, are temporarily sto…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.