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:
Oct. 05, 1999
Filed:
Mar. 28, 1996
Makoto Takayama, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In the case where one peripheral apparatus is shared by a plurality of host computers via an SCSI interface, an interface apparatus is provided between the plurality of host computers and the peripheral apparatus. When the first host computer and the peripheral apparatus are connected, the interface apparatus monitors whether a selection to the peripheral apparatus has been issued from the second host computer or not. When the selection is issued, a status of 'Busy' is returned as a response to the second host computer. The interface apparatus simultaneously monitors whether the first host computer has released a use right of the peripheral apparatus or not. Even if the first host computer doesn't release the use right of the peripheral apparatus, so long as there is no access for the predetermined time, the second host computer and the peripheral apparatus are connected in response to the selection or the like to the peripheral apparatus from the second host computer.