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. 12, 2010
Filed:
Sep. 11, 2006
Kenichi Kawaguchi, Kobe, JP;
Kenichi Kawaguchi, Kobe, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A data transfer apparatus for transferring data between a system bus and a local bus at a high speed is provided. A bus bridgeis connected between a system busand a local bus. Data transferred between a CPU, an I/O deviceand a main memoryon the system busare retained in an associative memoryvia an associative memory control unit. When an access to this data from an I/O deviceon the local busis generated, the data are transferred from the associative memoryto the I/O device. Thus, when a data transfer request from the I/O deviceto the main memoryis generated, no bus cycle is generated on the system busas long as this data are retained in the associative memory. Consequently, the data can be transferred at a high speed.