Multiplex transmission system for automotive vehicles
US5251211A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Oct 25, 1989 |
| Grant date | Oct 5, 1993 |
| Priority date | — |
| Expiry date | Oct 25, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/40273
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A multiplex transmission system for automotive vehicles includes a plurality of communication nodes interconnected via a common multiplex transmission line. Each communication node includes a communication control device for controlling communication among the communication nodes in accordance with a decentralized multiplex protocol, a transmitting device for transmitting a reception acknowledgement signal to the multiplex transmission line upon receiving reception data from the multiplex transmission line normally in a reception mode, a memory device for storing beforehand, as data in table form, reception acknowledgment signals from respective ones of the communication nodes in a predetermined state, a comparator device for comparing, after a transmission, an actual reception acknowledgment signal from each communication node with the data table in a transmission mode, and a re-transmission control device for performing re-transmission control of communication among the communication nodes based on the results of the comparison.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.