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:
Jul. 29, 2008
Filed:
Sep. 28, 2004
Yoichiro Fukunaga, Tokyo, JP;
Tsutomu Inui, Chiba, JP;
Akira Sonoda, Chiba, JP;
Hideyoshi Asai, Kanagawa, JP;
Hidehiro Inooka, Tokyo, JP;
Yoichiro Fukunaga, Tokyo, JP;
Tsutomu Inui, Chiba, JP;
Akira Sonoda, Chiba, JP;
Hideyoshi Asai, Kanagawa, JP;
Hidehiro Inooka, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Sony Computer Entertainment Inc., Tokyo, JP;
Abstract
There are provided a multisystem network, and a device and method for access to a data storage unit in order to allow processors in a plurality of devices to access the data storage unit. The data storage unit has a data storage area divided in a first area for a first device and a second area for a second device. The first and second devices are connected to the data storage unit via a connection circuit. A first processor in the first device can access directly the data storage unit. The connection circuit has provided therein an emulation register corresponding to a register which stores a command or control data used for the first processor in the first device to access the data storage unit. A second processor in the second device accesses the data storage unit via the emulation register and with intervention of the first processor.