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:
Jul. 10, 2001
Filed:
Dec. 22, 1998
Roger L. Gilbertson, Minneapolis, MN (US);
James L. DePenning, Eagan, MN (US);
Unisys Corporation, Blue Bell, PA (US);
Abstract
A system and method for managing the flow of data transfer requests from requesting devices to associated data transfer interconnection circuitry in a data processing system. Data transfers are initiated with data transfer requests that identify a data input queue and data output queue for which the data is to be transferred. The data transfer requests are issued from one or more requesting devices in the system. The data transfer requests are queued at a first queuing level. Within the first queuing level, data transfer requests identifying like data input queues are queued together, yet separate from data transfer requests identifying a different data input queue. Each of the data transfer requests from each of the queues in the first queuing level are transferred to a second queuing level to be queued according to the data output queue identified in the data transfer request. Each queue in the second queuing level stored only those data transfer requests identifying like data output queues. A control signal set is generated for each of the data transfer requests that are output from the second queuing level, and each control signal set identifies the data input queue and the data output queue between which the data is to be transferred. The data from the identified data input queues is transferred to the identified data output queues in response to the corresponding control signal sets.