The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 11, 1999
Filed:
Aug. 15, 1995
Applicant:
Inventors:
Detlev Neuhaus, Hannover, DE;
Wolfgang Stehr, Hannover, DE;
Jochen Kalter, Hannover, DE;
Frank Pietsch, Hannover, DE;
Assignee:
WABCO GmbH, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04J / ;
U.S. Cl.
CPC ...
370402 ; 370407 ; 370447 ;
Abstract
A star coupler for serial bus systems operates in compliance with the carrier sense multiple access (CSMA) method. The star coupler connects a plurality of individual bus systems to corresponding T-drivers and associated logic circuits, so that arbitration is performed within the total bus system in which all individual bus systems are included. Feedback suppression is used to assure unidirectional data flow, while error detection is combined with switching logic to disable faulty individual bus systems without affecting the other connected individual bus systems.