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. 13, 2006
Filed:
Jul. 31, 2001
Atsushi Date, Tokyo, JP;
Katsunori Kato, Kawasaki, JP;
Noboru Yokoyama, Tokyo, JP;
Tadaaki Maeda, Kawasaki, JP;
Takafumi Fujiwara, Yokohama, JP;
Atsushi Date, Tokyo, JP;
Katsunori Kato, Kawasaki, JP;
Noboru Yokoyama, Tokyo, JP;
Tadaaki Maeda, Kawasaki, JP;
Takafumi Fujiwara, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A P bus from a CPU, an MC bus from a system memory, an IO bus to which an input/output device has been connected, and a G bus for transferring image data of a scanner/printer controller are connected to a system bus bridge (SBB). The SBB connects any of the P bus, G bus and IO bus as a master and any of the MC bus and IO bus as a slave in dependence upon a request from a master. At this time the P bus and IO bus can be connected in parallel with the G bus and MC bus. As a result, access to the memory by the scanner/printer controller can be carried out in parallel with use of the input/output device by the CPU. This makes it possible to process a large quantity of data, such as image data, efficiently.