Method for the cyclic transmission of data between at least two control devices with distributed operation
US5748923A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 25, 1995 |
| Grant date | May 5, 1998 |
| Priority date | — |
| Expiry date | Sep 25, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/40273
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for periodic transmission of data between control devices (10, 11, 12) interconnected via a serial bus (20) is provided, particularly for the transmission of synchronization data. The control devices (10, 11, 12) each have a serial interface (17,17'17") and an arithmetic/control unit (15,18). Data are provided for transmission by the arithmetic/control unit (15, 18) of the control device transmitting the data and are included in a message sent over the serial bus (20). To this end, a transmission job for transmitting the message is provided to the serial interface (17) of control device (10) transmitting the message which controls the transmission. However, this occurs so that, when transmitting the message, use is not made of the data provided at the instant of providing the transmission job, but instead of updated data provided by the arithmetic/control unit in the interim since the instant of giving the transmission job. Moreover, advantageous bus subscriber stations for use in the method presented are also proposed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.