Control transaction handling in a device controller
US6757776B1 · kind B1 · utility
9Cited by
5References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 17, 2002 |
| Grant date | Jun 29, 2004 |
| Priority date | — |
| Expiry date | Oct 22, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/385
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Embodiments of the invention prevent data from being mishandled at a connected device using a system that verifies that data received after receiving a setup command portion of a control transaction is received without errors and/or without receiving a second setup command used to cancel the first. In some embodiments, a control transaction is processed by receiving a setup token and setup data, setting a predetermined memory location to write the setup data, and then preventing the setup data read from the memory from being acted on until the device verifies that no superceding commands have been received by the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.