Data communications system and data communications method between distributed controllers connected by serial bus
US8151159B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 1, 2008 |
| Grant date | Apr 3, 2012 |
| Priority date | — |
| Expiry date | Dec 3, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/1829
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A data communications system having a plurality of processing devices connected to a serial via a serial bus interface. The processing device provides a communication control line which connects each processing device in order and performs the transfer of transmission right of the serial bus, a transmission right management unit which is connected to the communication control line, performs the transfer of the transmission right and manages the state of the transmission right within its own processing device, a data transmission unit which starts data transmission when the transmission right is valid and holds the data transmission when the transmission right is invalid, and a state initialization unit which sets the initial state of the transmission right so that the transmission right of only one processing device is made to be valid at the initialization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.