Kabushiki Kaisha Toshiba

Max Co., Ltd.

Toshiba Corporation

Hiroyuki Nishikawa

Keiji Yamamoto

Taichi Tashiro

Kohta Nakamura

Yoshiki Namba

Akira Sawada

Hiroshi Nakatani

Hiroshi Uchino

Yoshito Sameda

Jun Takehara

Takashi Fujita

Takeshi Kitahata

Motohiko Okabe

Akira Kawaguchi

Takahisa Kageyama

Kihei Nakajima

Takeo Kanai

Kouichi Takene

Shoichi Irokawa

Tetsuo Ishikawa

Tadahiro Sakamoto

According to one embodiment, a controller for a storage apparatus is disclosed having interfaces connectable to a host system, a first storage apparatus and a second storage apparatus. A data in the first storage apparatus and a data in the second storage apparatus are duplicates. A status table stores the operating state regarding the first storage apparatus and the second storage apparatus, wherein the operating state indicates among writing, reading, or standing by. A monitor monitors the interfaces and set up the operating state into the status table. A buffer memory buffers the data for writing in the first storage apparatus and the second storage apparatus. A command response unit receives the data for writing and write-in request from a host system, and directs the writing of the data to the first storage apparatus and the second storage apparatus while making the buffer memory buffer the received data.

Controller for storage apparatus and controlling method for storage apparatus

A controller for a storage device is connected to a host system and the storage device. A buffer memory includes first and second storage areas. A timer counts a preset given time in response to an instruction to start counting and sends a deadline notification when A given time is elapsed. A command responding portion, when receiving a read command from the host system, instructs the timer to start counting and thereafter outputs a read instruction to read data from the storage system. A data processing portion, in response to the read instruction by the command responding portion, reads specified data from the storage device and holds the read data in the second storage area of the buffer memory. A read control portion sends the host system the data held in the second storage area of the buffer memory when the deadline notification is received from the timer.

Controller for storage device and method for controlling storage device

A controller is connectable to a host system and a plurality of storage devices. A monitor unit monitors operating status of a plurality of storage devices and sets the operating status of the storage devices in a status table. Upon receiving a write command from the host system, a command responding unit receives write data sent from the host system within a certain period of time after the write command, holds the write data received in a buffer memory, instructs a timer to start counting, sets a write destination for data in the status table, outputs a control signal that gives an instruction to write data to the storage device of the write destination, and returns a write completion response corresponding to the write command to the host system when receiving the deadline notification from the timer.

Controller for storage devices and method for controlling storage devices

A first arithmetic operator () includes a first modular arithmetic coding encoder () for encoding a numeric data transmitted by a command from a central controller () into a modular arithmetic code, a first arithmetic operation processor () using the numeric data as modular arithmetic coded as an input operand, for executing an arithmetic operation based on a command from the central controller (), to provide an output in the form of a modular arithmetic code, and a first modular arithmetic code decoder () for determining presence or absence of a bit error in the numeric data output from the first arithmetic operation processor, correcting the bit error, if detected any, to output a decoded numeric data.

Industrial controller

For a control apparatus to be boundary scan testable even when running, including processor cores in an operator to be capable of self-repairing a troubling part, an operator () has processor cores () connected to a boundary scan bus (), and adapted to mutually diagnose opponent processor cores for troubles, by boundary scan testing each other in a time-dividing manner.

Control apparatus

A turntable, swing hammers and fixed teeth of a garbage disposer are combined with a cylindrical pipe in one body, and arranged to be attachable/detachable with respect to a hopper. A guide pipe branching upward from an upstream upper end portion of a S-trap formed in a drainage pipe in the garbage disposer is provided, and a water injection nozzle is set on the guide pipe.

Drainage pipe washing apparatus

A power converting system has power converters for converting a direct current into an alternating current, a DC power source arranged on the DC side of the power converters, and voltage dividing transformers having windings whose first ends are connected to the power converters phase by phase and whose second ends are joined together and connected to a load phase by phase. Also provided is a controller for controlling the power converting system.

Power converting system multiplexed with voltage dividing transformers, the voltage transformers, and controller for the system

A power converter includes first and second power conversion units that are connected to each other by a d.c. reactor. The first power conversion unit is a converter in which arms consisting of thyristors are connected in a bridge configuration. The second power conversion unit is an inverter in which arms each of a series combination of a thyristor and a self-excited switch unit having a GTO for producing a commutation voltage for the thyristor are connected in a bridge configuration.

Power converter having first and second power conversion units with

A control device for a self-exciting current source electric power converter comprising a plurality of the self-turn-off devices connected in a bridge, and n-sets (n=a multiple of 2) of the electric source electric power converters, which convert AC into DC, or, convert DC into AC, wherein said converters are divided into two groups, an electric power regulating circuit, which controls the AC current of each converter, is provided for each group; an active current command value and the reactive electric power command value of all the electric power converters are inputted into the input side of the electric power regulating circuit respectively; at the same time, a positive arbitrary reactive power shift value (+Q) is added to one of the reactive electric power command values; a negative arbitrary reactive power shift value (-Q) is outputted to the other reactive electric power command values; and the both reactive power shift values are offset each other.

Growing community of inventors

Saitama-ken, Japan

Hiroyuki Nishikawa