Method and device for controlling communications with a serial bus
US6549951B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 1998 |
| Grant date | Apr 15, 2003 |
| Priority date | — |
| Expiry date | Aug 25, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/40123
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system architecture for a high speed serial bus compatible with the 1394 standard is disclosed. A transaction interface coordinates data packets received from or sent to a 1394 bus. A kernel/scheduler/dispatcher is used to allocate memory resources, and start a variety of tasks and services. The tasks and services vary depending on protocols used in a transport layer and application layer used in conjunction with the 1394 layers. The transaction interface uses information derived from the data packets received to form message control blocks, particular for each individual task, and places the control blocks into the proper task queue. The transaction interface forms a dispatcher message control block and places it into the scheduler/dispatcher queue to initiate the task. If there are no other message control blocks in the queue particular for the called task, the called task is immediately started. Otherwise, the message control block waits in the queue to eventually be operated on.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.