Method and apparatus for allocating bus access rights in multimaster bus systems
US7373445B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2005 |
| Grant date | May 13, 2008 |
| Priority date | — |
| Expiry date | Sep 25, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/362
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for allocating bus access rights is used in a multimaster bus system wherein addresses are explicitly allocated to master devices and each master device is assigned a priority value from an organized priority list of priority values. Requests from at least one master device to use the bus system to access a slave device are received, and the priority values of all requesting master devices are compared. If a sole requesting master device has the highest priority value access to the respective slave device is granted to that master device. If a plurality of requesting master devices have the same highest priority value access is successively granted to the requesting master devices having the same highest priority value on the basis of the address allocation of the master devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.