Kabushiki Kaisha Toshiba

Sony Corporation

Toshiba Electronic Devices & Storage Corporation

Renesas Electronics Corporation

Meiji Seika Kaisha, Ltd.

Kenji Yoshida

Yosuke Kondo

Kazuya Takada

Takashi Matsuo

Takeshi Harada

Takashi Nunomaki

Hisashi Ohashi

Isao Sasaki

Emi Arakawa

Kenji Tsushio

Mayumi Kamiya

Keiki Fukuda

Riuzou Nagatsuka

Masaki Mikamo

Yoriharu Takai

Koichi Nishide

Tetsuya Asai

Yasushi Ito

Akihiro Yamazaki

Kohsuke Harada

Hideo Shimokawa

Satoshi Tanaka

Toshiya Kotani

Osamu Yamashita

Minoru Kurosawa

Masafumi Asano

Kou Kobayashi

Susumu Yamazaki

Haruka Obata

Tatsuhito Tabuchi

Satoshi Ebato

Shigeru Masuda

Masahiro Kanno

Kazuhito Ichihara

Kazumasa Nomura

Kazuo Ichikawa

Yoshihito Okizaki

Hitoshi Hasegawa

Akihiro Watanabe

Masahisa Miyake

Naota Muguruma

Ayako Endo

Nobuhiro Ashizuka

Shigeto Kitamura

Junko Makise

Suzuo Watanabe

Hidetoshi Tsuneda

According to one embodiment, an electronic communication device includes a controller that changes an upper limit value capable of correcting an error of bit data in which an error occurs in packet data transferred by serial communication.

Electronic communication device, magnetic disk device, and serial communication method

An electronic communication device includes a controller which controls, according to the number of bit data in which an error has occurred of packet data transferred in serial communication, whether to start logging of information about the error of the packet data or stop logging of information about the error of the packet data.

Electronic communication device, magnetic disk device and serial communication method

According to one embodiment, a magnetic disk device includes a magnetic disk, an actuator, a nonvolatile memory, and a controller. When a first determination condition of whether a total value of an amount of data for which execution completion has not been notified in one processing thread that executes a write command, the data having not been written to the magnetic disk, and an amount of the data for which execution completion has been notified in another processing thread that executes the write command, the data having not been written to the magnetic disk, is less than or equal to a capacity of the nonvolatile memory holds, the controller notifies the host of execution completion of the write command in the one processing thread.

Magnetic disk device and memory management method of magnetic disk device

According to one embodiment, a magnetic disk device includes a magnetic disk including a plurality of tracks, first and second actuators, and a control circuit. The magnetic disk includes the plurality of tracks. The control circuit writes, in a first track by using the first actuator, second data having a size corresponding to a first number among the first data. In addition, the control circuit writes, in a second track by using the second actuator, third data having a size corresponding to a second number among the first data. Each of the first track and the second track is a track among the plurality of tracks. The first number is a number of writable sectors included in the first track. The second number is a number of writable sectors included in the second track. The third data is data received subsequent to the second data.

Magnetic disk device and method

According to one embodiment, a magnetic disk device includes a first controller and a second controller. The first controller includes a first communication circuits and a first buffer and configured to control a first actuator, and the second controller includes a second communication circuit and a second buffer and configured to control a second actuator. The first controller is configured to receive the data from outside by the first buffer and configured to be able to communicate with the second controller through the first and the second communication circuit.

Magnetic disk device and data processing method of magnetic disk device

The present invention is to provide an imaging apparatus superior in operability and visibility at the time of setting and adjusting functions thereof. The apparatus includes GUI screen image generating means for generating a GUI screen image for operating the imaging apparatus to display the GUI screen image on image display means; operating means for operating the GUI screen image displayed on the image display means; controlling means for controlling the imaging apparatus in accordance with the operation of the GUI screen image by the operating means; storing means for storing hierarchy type main menu information; menu generating means; and menu editing means capable of editing the unique menu information generated by the menu generating means. The controlling means controls the GUI screen image generating means when detecting a predetermined operation by the operating means, and the GUI screen image generating means generates the GUI screen image in which the index information to operate the menu editing means is included in the unique menu information, in accordance with the control by the controlling means, and displays the GUI screen image on the image display means.

Imaging apparatus

A storage apparatus includes a storage disk including a plurality of tracks each of which includes a plurality of sectors, a head configured to write data in and read data from the storage disk, and a controller. The controller is configured to control the head to carry out reading of a group of data units from target sectors in a target track of the storage disk, the group of data units being associated with a command received from an external device, determine whether or not the target sectors include one or more defective sectors based on result of the reading, and control the head to write the group of data units in physically consecutive non-written sectors of the target track or another track, when the target sectors are determined to include the defective sectors.

Rewriting of data stored in defective storage regions into other storage regions

According to one embodiment, a magnetic disk device including a disk, a head which reads data from the disk, a memory which records data, and a controller which includes a table, and records, at a first time point at which a read gate is open, a first area number of a first area of the table in which first information related to first data is recorded, a first serial number of the first data added when the read gate is open, and a first count value of the first data, in the first area.

Magnetic disk device and read method

A data recording apparatus includes a disk, a read/write head, and a control circuit configured to control the head to perform reading of first data on the disk according to a first format and writing of second data to the disk according to a second format, wherein the second data is generated by compressing at least a part of the first data, and the second format is determined according to a data size of the second data.

Data recording apparatus and data recording method

A magnetic disk device includes a magnetic disk that includes a plurality of tracks, a magnetic head for reading data from the magnetic disk, and a controller. The controller begins controlling the magnetic head to move to a second track of the plurality of tracks from a first track of the plurality of tracks before decoding of a first track signal output from the magnetic head is completed, wherein the first track signal is output from the magnetic head while the magnetic head is positioned over the first track.

Magnetic disk device, controller, and method

According to one embodiment, a data recovery circuit includes an XOR operation unit, an erroneous bit position inferring unit, an error factor inferring unit, and an error provisionally determining unit. The XOR operation unit performs a bitwise XOR operation on M data sequences of N bits, where M and N are integers of two or greater. The erroneous bit position inferring unit infers an erroneous bit position based on the XOR operation result. The error factor inferring unit infers the inverted direction of the erroneous bit. The error provisionally determining unit performs bit inversion in the erroneous bit position, the direction of the bit inversion being opposite to the inferred inverted direction.

Data recovery circuit, semiconductor storage device, and data recovery method

According to one embodiment, a magnetic disk device includes a memory including a first storage area and a second storage area different from the first storage area, and a controller configured to generate a compressed data compressing input data, generate a header data related to a compressed data group including a plurality of compressed data, generate a packet data including the compressed data group and the header data, store the packet data in the first storage area, and store the header data in the second storage area.

Disk device and method for storing data and associated headers

A storage controller includes a control unit and an interface. The control unit, when write data input as data to be written onto a magnetic disk includes a bit string of a first pattern, inverts one or more bits of the bit string. The write data includes a redundancy bit string used for data error correction. The interface outputs write data including bit inverted by the control unit.

Storage controller, storage device, and method

A magnetic disk apparatus includes a disk and a controller. The disk includes a plurality of tracks including a first track and a second track that is different from the first track. A plurality of data sectors are located on the tracks. The data sectors include short data sectors and long data sectors, each including a plurality of short data sectors. If the controller accesses a long data sector located at an end of the first track, the controller first accesses a short data sector of the long data sector at the end of the first track, and then accesses a short data sector of the long data sector at the beginning of the second track.

Magnetic disk apparatus and method for accessing data sector

An imaging apparatus generates a GUI screen image for operating the imaging apparatus. A controller controls the generation of the GUI screen image upon detecting a predetermined operation.

Growing community of inventors

Akishima, Japan

Kenji Yoshida