Patent · US Expired

Interface circuit connecting a device with a bridge portal function to a communication bus

US7580420B2 · kind B2 · utility

4Cited by

8References

13Claims

0Family size

Assignee

Thomson Licensing · FR

Inventors

Siegfried Schweidler · Gehrden, DE
Dieter Haupt · Lüneburg, DE
Klaus Gaedke · Hannover, DE
Malte Borsum · Hannover, DE
Herbert Schutze · Celle, DE

Key dates

Filing date	Apr 18, 2002
Grant date	Aug 25, 2009
Priority date	—
Expiry date	May 13, 2024

Classification

Technology area (CPC H)Electricity
CPC primaryH04L12/6418
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A wireless extension of the IEEE 1394 bus where two clusters of 1394 devices are linked by a wireless bridge. The device clusters communicate without being bridge-aware. The wireless bridge provides for a bus reset isolation. The wireless extension including a buffer memory for storing self-identification packets in the 1394 interfaces of both boxes of the wireless bridge. With these buffer memories the self-identification packets of the bus stations in the other cluster can be collected and they can be read out during the self-configuration phase of the network after a bus reset when the bus grant is assigned to the box of the wireless bridge that is also connected to the bus where the bus reset has occurred. The physical layer block of the 1394 interface transmits artificial self-identification packets for all bus stations of the other cluster.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.