Method for data transmission over an internal bus of a workstation, apparatus with an internal bus for implementing the method, and an adapter circuit for the internal bus
US5371740A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 1993 |
| Grant date | Dec 6, 1994 |
| Priority date | — |
| Expiry date | Oct 22, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2213/36
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method of data transmission over an internal bus of a workstation, effecting communication of an interface coupler and a telephone line and devices adapted for various communication functions. The method employs the synchronization signal of a voice network to define 125-microsecond communication frames. Included in each 125-microsecond frame thus defined are a maximum of eight variable-length subframes corresponding to a maximum of eight devices. The first two bytes of each subframe are header bytes. Coded in the header bytes of each subframe are a device destination address, and length codes indicating the number of bytes of data included in the subframe and the number of active bits in the last byte.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.