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:
Apr. 21, 1987
Filed:
Jul. 05, 1983
Kent S Norgren, Longmont, CO (US);
Robert E Vogelsberg, Boulder, CO (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Independent asynchronous bus master devices share a common bus with control lines serially connecting each bus master in a daisy-chain contiguration. A Bus Acknowledge signal is received by a local bus master which is thereby enabled to seize control of the bus without an input synchronization delay by first inhibiting synchronization means to prevent the passage of the Bus Acknowledge signal to a downstream device for a period of time sufficient to stabilize an output signal indicating such passage. In that manner, the output signal may be used to control the immediate enabling of local bus seizure thereby avoiding local synchronization delay.