Kabushiki Kaisha Toshiba

Fuji Photo Film Company, Limited

Nissan Motor Company Limited

Ntt Docomo, Inc.

Toshiba Memory Corporation

Ntt Mobile Communications Network, Inc.

Hiroshi Nakamura

Kenichi Imamiya

Kazushige Kanda

Koichi Kawai

Ken Takeuchi

Tamio Ikehashi

Nagao Ogiwara

Yoshiyuki Tanaka

Koji Hosono

Hiroshi Sukegawa

Hideo Morita

Kazuya Kawamoto

Yukichi Saito

Mikito Nakabayashi

Masanobu Shirakawa

Takuya Futatsuyama

Atsuhiro Sato

Motoshi Tamura

Akihisa Nakajima

Kenichi Abe

Toshifumi Minami

Yasuyuki Baba

Keisuke Yonehama

Hiroshi Shinohara

Tomoyuki Ohtani

Teruki Niwa

Tokuro Doi

Daisuke Akiyama

Hisakazu Uesaka

Takashi Awaihara

A semiconductor memory device includes a first memory cell, a second memory cell above the first memory cell, a first word line electrically connected to a gate of the first memory cell, a second word line electrically connected to a gate of the second memory cell, and a control unit that performs an erasing operation on the first and second memory cells. During the erasing operation, the control unit applies a first voltage to a first word line and a second voltage higher than the first voltage to a second word line.

Semiconductor memory device

A driving unit and a power-generating unit are separately supported on a sub-frame in such a manner to isolate vibration and are spaced away from each other in a vehicle front-rear direction, to realize good noise/vibration control ability. With respect to an external input acting in the vehicle front-rear direction, a weakened part of a mount bracket extended over the power-generating unit to the driving unit induces and promotes a buckling distortion, to demonstrate good energy absorption ability.

Hybrid vehicle

In a memory system using a removable recording medium and data stored in the recording medium, identifying information for identifying each recording medium from others is held in the recording medium, and when data stored in the recording medium is used, the identifying information of the recording medium is required. As a result, when a flash memory card, etc. is used, a copyright is reliably protected.

Memory device storing identifying information and memory card including the same

Memory system

A semiconductor device of this invention includes a first circuit for initializing a predetermined circuit in accordance with the level of a power source voltage, a second circuit for controlling the output from the first circuit by activation or deactivation, and an activation control circuit for activating or deactivating the second circuit in accordance with external input.

Semiconductor device, nonvolatile semiconductor memory, system including a plurality of semiconductor devices or nonvolatile semiconductor memories, electric card including semiconductor device or nonvolatile semiconductor memory, and electric device with which this electric card can be used

The object is to avoid an erroneous operation during a term in which an initialization is performed when a command is input. After a power source is turned on, a low level of a power-on-reset signal PWONRSTn is output until it reaches a power-on detect level. It is inverted by an inverter IN, and input to a NOR circuit NRlikewise commandsand, so that a status is set to a busy status. The busy status is kept during a term in which a initialization operation is performed until the power supply voltage reaches the power-on detect level. Further, the status is read out to the exterior by a status read out mode signal to notify a user. As a result, it prevents from being input a command by an erroneous operation of a user during the initialization operation term.

A semiconductor device of this invention includes an initialization circuit for initializing a predetermined circuit in accordance with the level of a power source voltage, and a status setting unit for setting the status of the semiconductor device to 'busy' during a period in which the initialization circuit performs initialization.

SEMICONDUCTOR DEVICE, NONVOLATILE SEMICONDUCTOR MEMORY, SYSTEM INCLUDING A PLURALITY OF SEMICONDUCTOR DEVICES OR NONVOLATILE SEMICONDUCTOR MEMORIES, ELECTRIC CARD INCLUDING SEMICONDUCTOR DEVICE OR NONVOLATILE SEMICONDUCTOR MEMORY, AND ELECTRIC DEVICE WITH WHICH THIS ELECTRIC CARD CAN BE USED

An address structure in mobile communications network facilitating routing of a packet. At the initial position of the address, is located a prefix or the like indicating the type of the address structure, which indicates the present mobile communications network system, for example. At the next position, a location address (LA) is located characterizing the present invention. The location address is usually placed at the position of a subnetwork address. The location address (LA) is provided for each mobile switching system, and constitutes part of an IP address of a user using a mobile station under the control of the mobile switching system. At the final position, is located a user identifier (user ID) which is used for identifying a user, and is provided uniquely for each user. The IP address in accordance with the present invention can be split into the foregoing three sections, part of which includes the location address and user identifier indicating the location of the mobile station in the mobile communications network, thereby enabling the identification of the user in the mobile communications network system and the control of the packet transmission.

Packet transmission method, packet transmission system and packet data transmission medium on mobile communications network system

A semiconductor memory device disclosed herein comprises a memory cell array in which memory cells are connected to word lines, a first voltage generating circuit which generates a first voltage, a second voltage generating circuit which generates a second voltage using the first voltage, a word line selecting circuit which selects at least one of the word lines, a word line voltage supplying circuit which supplies the second voltage to the selected word line through the word line selecting circuit, and a transfer voltage supplying circuit which supplies the first voltage to the word line selecting circuit and stops supplying it to be in a floating state before transferring the second voltage from the word line voltage supplying circuit to the selected word line, in an operation in which the second voltage is supplied to the selected word line after the first voltage is supplied to the word line selecting circuit.

Control of a packet communications network in a fixed network used by a mobile communications network is performed. (1) A communication hold mode is set for a user when the traffic volume of the user's transmission or reception of a packet per fixed time period is less than a predetermined value. The communication hold mode is defined as &ldquo;although the network resources are released once, a mobile station and a gateway center at an interface with an external network behave to the user side and the external side as though the communication hold mode were maintained&rdquo;. (2) When the user in the communication hold mode restarts the transmission of a packet, the mobile station automatically carries out a recall processing without the intervention of the user, and re-establishes the communication up to the gateway carrier. (3) When the gateway center restarts receiving a packet to the user in the communication hold mode, the gateway center carries out the incoming recall processing without the intervention of the external network, and re-establishes the communication all the way to the mobile station. (4) To accomplish the incoming recall processing, the mobile station makes a location registration when it roams across location registration areas after a transition into the communication hold mode.

Packet communications network

Growing community of inventors

Kanagawa, Japan

Hiroshi Nakamura