Frame transfer device for a fixed format frame transmission network
US5263028A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 1992 |
| Grant date | Nov 16, 1993 |
| Priority date | — |
| Expiry date | Jan 27, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q11/0414
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A frame transfer mechanism for a processor controlled network node connected to network link wherein fixed-length data frames including a fixed number of slots are to be transferred to and from a memory (10) under processor (23) control. The incoming data flow through a FIFO-IN shift register (22). The outgoing frames flow through a FIFO-OUT (24) register. Both FIFO shift registers are provided with an extra bit position which is used to insert a synchronization-bit (flag) used to control synchronization operation of the system and incoming frames. The extra-bit position is fedback from FIFO-OUT to FIFO-IN to enable wrap-test operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.