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. 13, 2003
Filed:
Oct. 02, 1992
William C. Galloway, Houston, TX (US);
Compaq Computer Corporation, Houston, TX (US);
Abstract
A SCSI device resides and communicates on the SCSI bus without that device being assigned a SCSI address or corresponding SCSI ID. The driver software on the host computer directs the SCSI initiator device to select itself as its target, so the initiator then only asserts one bit of the eight bit SCSI data bus. The SCSI device determines when a SELECTION phase is under way and then determines if only one bit has been asserted on the SCSI data bus. The SCSI device then responds to the initiator as being the target device, thus completing the SELECTION phase. The initiator and the SCSI device can then communicate as a normal initiator and target would during information transfer stages of the SCSI standard. This is all done without the SCSI device occupying a normal SCSI address.