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:
Oct. 14, 2003
Filed:
Dec. 21, 2000
Andrew Thomson, Austin, TX (US);
National Instruments Corporation, Austin, TX (US);
Abstract
A system and method for GPIB autopolling of GPIB devices. A computer is coupled to one or more GPIB instruments through a GPIB to analyze, measure or control a process or unit under test. The computer includes a GPIB controller which monitors activity of the GPIB devices on the bus and produces heuristic information regarding the past behavior of the GPIB devices, such as a queue of one or more GPIB device IDs sorted by how recently each device was accessed. The heuristic information produced is stored on a memory and/or hard drive of the computer. A service request (SRQ) line assertion triggered by one or more GPIB devices may be received. The GPIB controller performs autopolling on the GPIB devices as ordered in the queue to determine which of the devices asserted the SRQ. If no queued devices asserted, the remainder of the devices are polled in arbitrary order.