Bus extension for multiple masters

US6484221B1 · kind B1 · utility

Assignee

• Storz Endoskop GmbH · CH

Inventors

• Andreas Lorinser · Waldbronn, DE
• Andre Wetzel · Radolfzell, DE
• Andreas Bayer · Domat/Ems, CH
• Pavel Novak · Munich, DE
• Klaus Irion · Liptingen, DE

Key dates

• Filing date: Oct 1, 1999
• Grant date: Nov 19, 2002
• Expiry date: Oct 1, 2019

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F13/423
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

A network bus for interconnecting a plurality of medical devices is described in which the devices are provided with modules adapted to communicate along the bus. Some of the devices are capable of assuming control over the bus with network master modules. A self-configuring capability is provided with which several network master capable medical devices automatically determine which network master is to take over control over the network bus and each individually is capable of controlling and operating the network. Each network master capable device has an extended network management module with which automatic master selection is achieved. This is done by monitoring or observing network communications for particular objects. Once such an object has been detected, a network master capable device is automatically selected to take over control on the basis of its priority. The selected network master module in turn monitors the network bus for objects indicative of another medical device which has a higher priority, while other connected master network capable medical devices continue to monitor the network bus to detect whether the current master is de-activated or fails to operate…