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. 04, 1999
Filed:
Dec. 06, 1996
Robert Andrew Lackman, Wake Forest, NC (US);
Edward Robert Vanderslice, Boca Raton, FL (US);
Richard Allen Kelley, Apex, NC (US);
Donald Ingerman, Raleigh, NC (US);
Thomas Basilio Genduso, Apex, NC (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Data is transferred over a bus from one device to another, or between one device and another system resource, such as a central processor. This data is classified into one of several types. 'Hard real time' data must be transferred within a specified time limit or 'deadline' and it is unacceptable to miss a deadline. 'Soft real time' data should be transferred before a deadline and, although some missed deadlines are tolerable, the lower the number of missed deadline the better. 'Loss sensitive' data has no deadlines, but any loss of data is unacceptable. 'Non-real time' data also has no deadlines, but the lower the time delay in transferring the data the better. The intelligence that controls the transfer of data and schedules access to the bus is distributed throughout the system. Part of this scheduling intelligence is included in the bus arbiter, while the remainder is incorporated in the devices themselves.