Hitachi, Ltd.

Renesas Technology Corp.

Tomihisa Hatano

Kunihiro Katayama

Takashi Tsunehiro

Nagamasa Mizushima

Koichi Kimura

Toshio Tanaka

Motoyasu Tsunoda

Takatoshi Kato

Takayuki Tamura

Kazunori Furusawa

Kazuhiro Umemura

Hiroshi Kawamura

Shin'ichi Hashimoto

A memory device is provided which is connected to operate with power and clocks supplied from a host apparatus. The memory device includes external terminals, a flash memory chip to store data, an IC chip to process data; and a controller chip connected with the external terminals, the flash memory chip and the IC chip. The flash memory chip, the IC chip and the controller chip are discrete chips. The controller chip writes data inputted from the host apparatus into the flash memory chip or the IC chip and transfers data read from the flash memory chip or the IC chip to the host apparatus, based upon commands from the host apparatus.

Memory card

In a client/server architecture system, a device management system having the function of safely sharing a device without compromising user convenience is provided. The device is coupled to a terminal that the user uses or a hub coupled to a network. A device management manager having a device driver function and communication function installed on the terminal or the like, a virtual device manager having a device driver function and communication function installed on the server, and an authentication server that manages access permission for the device allow the device to be virtually available as in the case of the device directly coupled to the server while managing the access to the device.

Device management system

A memory device is provided which is connected to operate with power and clocks supplied from a host apparatus. The memory device includes external terminals, a flash memory chip to store data, an IC chip to process data; and a controller chip connected with the external terminals, the flash memory chip and the IC chip, wherein, the flash memory chip, the IC chip and the controller chip are discrete chips. The controller chip writes data inputted from the host apparatus into the flash memory chip or the IC chip and transfers data read from the flash memory chip or the IC chip to the host apparatus, based upon commands from the host apparatus.

It is an object of the invention to improve security of a storage apparatus. The invention has: a flash memory chip; an IC card chip which can execute a security process (encryption, decryption, etc.); and a controller chip for controlling read/write of data from/into the flash memory chip and the IC card chip in response to a request from a host.

In the present invention, disclosed is a semiconductor memory device capable of reducing the number of erasing times of each block allocated to a cluster or the number of blocks to be erased in one writing to the minimum. As an embodiment of the present invention, when a host system performs accessing, for each cluster as a unit, to the FAT partition prepared on a flash memory of the semiconductor memory device , a CPU adds an address offset value held by address offset storage section to a logical address specified by the host system , whereby a logical address of a head sector of the cluster correspond to a physical address of a head sector of a unit block for erasing/writing data in the flash memory

Semiconductor memory device with block alignment function

A facsimile receiving processing unit in a facsimile server terminal receives and stores facsimile data in a data storage unit. A receiving-end user issues a request for accessing the received facsimile data stored in the data storage unit through a received facsimile accessing unit in a client terminal to a received facsimile manager in the facsimile server terminal. At the time when the received facsimile data is accessed for the first time, a response data creating unit in the facsimile server terminal automatically creates response data which indicates that the facsimile data has been accessed at the receiving end, and then the response data is sent back to the sending-end facsimile machine by a facsimile transmission processing unit in the facsimile server terminal. This allows the sending-end user to recognize whether the facsimile data has actually been accessed by the receiving-end user.

Growing community of inventors

Kawasaki, Japan

Tomihisa Hatano