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:
Jan. 16, 1996
Filed:
Apr. 05, 1994
Digital Equipment Corporation, Maynard, MA (US);
Abstract
A queue based arbiter to arbitrate between N devices of a computer system for access to a system bus which eliminates the need to maintain a history of bus transactions by queuing bus requests to track when a bus request is posted. The arbiter provides fair access to the bus by maintaining a queue of requests that come in from each resource in the computer system. This is accomplished by continually sampling the individual request lines of the devices to determine if a device is requesting access to the bus. Each time the arbiter detects a request from a device it puts an entry representative of the specific device that has requested the bus into a queue that has at least N entries. Requests are granted in the order that they are queued.