Sony Computer Entertainment Inc.

Sony Corporation

Yoichiro Fukunaga

Makoto Tanaka

Masaharu Yoshimori

Tsutomu Inui

Hidehiro Inooka

Hideyoshi Asai

Akira Sonoda

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.

Multisystem network, and device and method for access to data storage

An entertainment apparatus has a memory card, and an information processing unit to which the memory card is detachably connected. The memory card includes a flash ROM having identification information stored therein, and a ROM size table. The information processing unit is adapted to obtain page size information of the flash ROM from the identification information and the ROM size table and to control, in accordance with the obtained page size information, the reading and writing of data with respect to the flash ROM.

Entertainment apparatus, information processing unit and portable storage device

Growing community of inventors

Tokyo, Japan

Yoichiro Fukunaga