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:
Jun. 04, 1996
Filed:
Jul. 14, 1995
Carl L Ostrowski, Ann Arbor, MI (US);
Unisys Corporation, Blue Bell, PA (US);
Abstract
The disclosed invention is an apparatus in a computer peripheral device for determining the direction of signal flow and data flow on a SCSI bus, which apparatus comprises a time delay means responsive to status signals of the SCSI bus. The time delay means generates a signal that defines an arbitration selection period of time for determining control of the SCSI bus. The apparatus further includes a first circuit means responsive to the arbitration selection signal and status signals of the SCSI bus. The first circuit means generates a plurality of signals that determine whether the peripheral device is an initiator of signals to be transmitted on the bus or is a target for receipt of signals present on the bus. Moreover, the apparatus includes a second circuit means that is responsive to the plurality of signals generated by the first circuit means and status signals of the bus. The second circuit means generates a pair of signals indicative of the direction of data and signal flow on the SCSI bus.