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. 24, 1994
Filed:
May. 27, 1992
Andrew C Thomson, Austin, TX (US);
Brian K Odom, Pflugerville, TX (US);
C Paul Butler, Austin, TX (US);
Michael G Jablin, Austin, TX (US);
William C Nowlin, Jr, Austin, TX (US);
Robert W Canik, Cedar Park, TX (US);
National Instruments Corporation, Austin, TX (US);
Abstract
A modified IEEE 488.1 bus interface increases, by as much as a factor of eight, the rate at which inter-instrument data transfers can be performed. The bus interface state machines presented in the ANSI/IEEE Std 488.1-1987 have been modified so that if all the devices involved in a particular data transfer are equipped to handle high speed data transfers, then a modified data transmission methodology is used so as to enable multiline messages to be transmitted at a higher speed than would otherwise be possible. If any of the devices involved in a particular data transfer does not have an interface equipped to handle high speed data transfers, this condition is automatically detected by the interfaces with high speed capability, and then the standard data transmission methodology is used. The high speed data transmission mode is totally transparent to the controller software in that it does not require any changes to the controller software nor to the device drivers and device application programs.