Local ring network and method for transmitting digital data in a local ring network

US6782552B1 · kind B1 · utility

Assignee

• Becker GmbH · DE

Inventors

• Andreas Stiegler · Ettlingen, DE
• Michael Becker · Knittlingen, DE
• Harald Schoepp · Ettlingen, DE
• Jochen Klaus-Wagenbrenner · Bühl, DE
• Joachim Wietzke · Hildesheim, DE

Key dates

• Filing date: Feb 25, 2000
• Grant date: Aug 24, 2004
• Expiry date: Feb 25, 2020

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S370/909
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

A control command, which has a command header sequence and a sequence of n parameters, is generated in a data source of a local network. The control command has a variable length defined by the data source. The control command is passed to the ring data line of the local network and is forwarded to a data sink. This data sink contains a control unit, a picture output unit, an interface and a memory, in which video data are stored. The video data can be read out and displayed on the picture output unit. The control command has n parameters of which the first m parameters are interpreted by the control unit. The number m is determined by the properties of the data sink and is independent of the properties of the data source. Using the m interpreted parameters, specific video data are read from the memory and are reproduced.The invention relates to a local network having a plurality of subscribers, which are connected to one another through the use of an optical data line for transmitting audio, video data and/or control data. The subscribers, together with the optical data line, form a ring network.