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:
Nov. 05, 1996
Filed:
May. 31, 1995
Applicant:
Inventors:
Tian Shen, Austin, TX (US);
Andrew C Thomson, Austin, TX (US);
Assignee:
National Instruments Corporation, Austin, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L / ;
U.S. Cl.
CPC ...
370 851 ; 370 8513 ; 370 859 ; 370112 ; 371 32 ; 371 221 ; 364244 ; 3642328 ; 3642624 ; 395800 ;
Abstract
A GPIB bus extender which intelligently supports the IEEE 488.2 find listeners protocol. The GPIB bus extender of the present invention monitors the bus and determines when a talker is present on the bus. When the GPIB extender detects a talker present on the bus, the extender configures itself as a listener to receive any messages for devices on the remote bus. When the GPIB extender does not detect a talker present on the bus, the extender does not configure itself as a listener, but rather is prepared to participate in a find listener protocol.