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:
Feb. 22, 2011
Filed:
May. 14, 2009
Applicant:
Katsuhiko Yanagawa, Inagi, JP;
Inventor:
Katsuhiko Yanagawa, Inagi, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 13/42 (2006.01);
U.S. Cl.
CPC ...
Abstract
A bus control device includes a multiplexer which connects a ROM controller to a common bus when a ROM mode is set and which connects a PCI controller to the common bus when a PCI mode is set. The bus control unit further includes a bus switch which disconnects a PCI bus from the common bus when the ROM mode is set and which connects the PCI bus to the common bus when the PCI mode is set.