Other

Sony Corporation

Sony Electronics Inc

Richard K Scheel

David V James

Hisato Shima

Bruce Alan Fairman

Scott D Smyers

Glen David Stone

Kazonubu Toguchi

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 intercepting bridge devices the type of transaction and control tasks to be performed by the bridge device when the asynchronous control mechanism packet is received.

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

A method of maintaining communications in a bus bridge interconnect including a plurality of buses linked by at least one bus bridge. The method includes receiving a change indication signal from a talker node, performing an address resolution protocol in response to the change indication signal to find an updated node identification address('nodeID') for a listener node using a extended unique identifier ('EUI') of the listener node, and storing the updated listener nodeID with the listener node EUI.

Maintaining communications in a bus bridge interconnect

A method and system for quarantine during bus topology configuration are described. In one embodiment, the invention is a method. The method includes quarantining a set of devices coupled to a bus. The method further includes establishing a topology of the bus. The method may also include receiving a reset signal and quarantining in response to the reset signal. In an alternate embodiment, the invention is a system. The system includes a bus having a reset signal and a plurality of data signals. The system also includes a set of devices, with each device of the set of devices coupled to the bus. The system further includes a controller. The controller having a memory configured to store device identifiers corresponding to the devices of the set of devices. The memory further configured to store quarantine information relating to the devices of the set of devices.

Method and system for quarantine during bus topology configuration

A method and system for a multi-phase net refresh on a bus bridge interconnect, the interconnect comprising a number of nodes, a bus bridge, and a number of buses, are described. In one embodiment, a primary bus is acquired by communicating with other bus bridges on the buses. A secondary bus is breached to acquire the secondary bus. In addition, the primary bus and the secondary bus are committed.

Method and system for a multi-phase net refresh on a bus bridge interconnect

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

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Pleasanton, CA, United States of America

Richard K Scheel