Method of and apparatus for implementing and sending an asynchronous control mechanism packet used to control bridge devices within a network of IEEE Std 1394 serial buses
US7321592B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 3, 2002 |
| Grant date | Jan 22, 2008 |
| Priority date | — |
| Expiry date | Jul 13, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/462
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An asynchronous control mechanism packet is used to send control messages and information to one or more bridge devices within a network of buses of devices. The asynchronous control mechanism packet is addressed to a device on one of the buses and is intercepted by one or more appropriate bridge devices along the path to the destination device. The asynchronous control mechanism packet is targeted at a particular bridge device or used to send control messages and information to bridge devices along a particular communications route between two devices. The asynchronous control mechanism packet includes a designation specifying that it is an asynchronous control mechanism packet and should be treated accordingly. This designation is recognized by the appropriate bridge devices. Preferably, this designation is included within the extended transaction code field of the packet. In an alternate embodiment, the designation is included within a transaction code field of the packet. In a further alternate embodiment, the designation is included within an address offset value within the packet. Instructional information within the asynchronous control mechanism packet specifies to intercep…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.