Kabushiki Kaisha Toshiba

Denka Company Limited

Semiconductor Energy Laboratory Co., Ltd.

Toshiba Electronic Devices & Storage Corporation

Toshiba Digital Solutions Corporation

Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Electric Corporation

Manabu Kobayashi

Tomohiro Nomiyama

Tetsuji Ishitani

Yasuhiro Niikura

Shintaro Watanabe

Makoto Ikenaga

Koki Ando

Momoko Kato

Kouki Naka

Masakatsu Matsuo

Akira Hashimoto

Masatsugu Nakano

Kazumasa Ito

Yusuke Takeda

Akihiro Yamazaki

Yuji Nakahara

Masaru Miyazaki

Yuko Kawata

Tomohiro Tamura

Keita Kobayashi

Yasuki Kimura

Tatsuya Okuzono

Satoshi Yamashiro

Hidetoshi Teruyama

Kazuhisa Kaino

Mai Nakazawa

According to one embodiment, a first key sharing module outputs a common key, a first cryptographic module encrypts plaintext data and outputs encrypted data. A first transmission system transmits the encrypted data. A second transmission system transmits the common key. A monitor device is disposed in the first transmission system, and receives transmission condition data from a first base and reception condition data from a second base, and performs matching of the transmission condition data and the reception condition data.

Cryptographic communication path monitoring system and monitoring method

According to one embodiment, an encryption communication system configures a network with a plurality of nodes, and shares the encryption key between a first node that delivers the encryption key to a first user and a second node that delivers the encryption key to a second user. The first node forms n (n>1) systems of paths to the second node over the network, generates n pieces of first data, distributes the n pieces of first data to the n systems of paths and transmits the n pieces of first data to the second node, and generates the encryption key by superimposing the n pieces of first data. The second node receives the n pieces of first data from the first node via the n systems of paths, and generates the encryption key by superimposing the n pieces of first data.

Encryption communication system, encryption communication apparatus, and encryption communication

A europium-doped β-sialon phosphor, in which, when the ratio of an aluminum element at a depth of 8 nm from the surface of the phosphor, which is obtained by X-ray photoelectron spectroscopy, is indicated by P[at %], and the ratio of an aluminum element at a depth of 80 nm from the surface of the phosphor is indicated by P[at %], P/P≤0.9 is satisfied. A light emitting device containing this β-sialon phosphor.

Beta-sialon phosphor and light emitting device

A β-sialon phosphor represented by general formula: SiAlON(0<z<4.2) has as a host crystal, a crystal structure identical to that of a β-sialon crystal phase and having a bulk density of 0.80 g/cmor more and 1.60 g/cmor less. Also, a light-emitting element includes the β-sialon phosphor and a semiconductor light-emitting element capable of exciting the β-sialon phosphor.

β-SiAlON phosphor and light-emitting apparatus

A phosphor powder contains an EU-activated &#x3b2;-type sialon phosphor particles. When a median diameter in the phosphor powder having not been subjected to an ultrasonic homogenizer treatment is set as D1 and a median diameter in the phosphor powder having been subjected to an ultrasonic homogenizer treatment is set as D2, 1.05&#x2264;D1/D2&#x2264;1.70. A dispersion liquid in which 30 mg of the phosphor powder is uniformly dispersed in 100 ml of a 0.2% concentration of a sodium hexametaphosphate aqueous solution is added to a columnar container of which a bottom surface has an inner diameter of 5.5 cm. Then, the dispersion liquid is irradiated with ultrasonic waves for 3 minutes at a frequency of 19.5 kHz, and an output of 150 W, in a state where a cylindrical tip, which has an outer diameter of 20 mm, of an ultrasonic homogenizer is immersed in the dispersion liquid in &#x2265;1.0 cm.

Phosphor powder and light-emitting device

A &#x3b2;-sialon phosphor that is a solid solution of europium, in which Dis 7.0 &#x3bc;m or more and 20.0 &#x3bc;m or less and (D&#x2212;D)/Dis 0.60 or less, where Dis a 50% area diameter of primary particles of the &#x3b2;-sialon phosphor, and Dis a 10% area diameter of the primary particles of the &#x3b2;-sialon phosphor. Primary particles are defined as single-crystal particles distinguished for each crystal orientation by identifying the crystal orientation of individual particles of the &#x3b2;-sialon phosphor by an electron backscatter diffraction image method. Dand Dare obtained by image analysis of the cross-sectional area of the primary particles.

B-sialon phosphor and light emitting device

According to one embodiment, a first decoding circuit calculates likelihood information by executing Viterbi decoding using a parameter for normalizing a branch metric on a signal sequence read from a magnetic disk. The second decoding circuit generates a first bit data sequence by iterative decoding using the likelihood information, and executes a check using a parity check matrix on the first bit data sequence. The control circuit causes the first decoding circuit and the second decoding circuit to repeatedly execute decoding, and updates the parameter in accordance with a check result obtained every time the decoding by the first decoding circuit and the second decoding circuit is executed. An acquisition circuit acquires numerical information corresponding to the number of bit errors included in the first bit data sequence obtained when the number of times of executions of the decoding is equal to a first value.

Magnetic disk device and method of controlling the same

According to one embodiment, a storage device includes a detector, a demodulator, a controller, and a recorder. When a user data item is split data including first data being at least part of a first code word and second data being at least part of a second code word, the controller sets a start position of the second data for forced search of the second code word on the basis of the position of a sync mark recorded in the recorder when the forced search of the first code word has succeeded.

Storage device and control method

A novel organic compound that can be used in a variety of liquid crystal devices or a liquid crystal composition containing the novel organic compound is provided. An organic compound represented by General Formula (G1) is provided. A novel liquid crystal composition containing the organic compound is provided. In General Formula (G1), Arand Arseparately represent a substituted or unsubstituted arylene group having 6 to 12 carbon atoms, a substituted or unsubstituted cycloalkylene group having 3 to 12 carbon atoms, or a substituted or unsubstituted cycloalkenylene group having 3 to 12 carbon atoms. In addition, m and n separately represent 0 or 1. Rand Rseparately represent a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 11 carbon atoms, or a substituted or unsubstituted alkoxy group having 1 to 11 carbon atoms. 

Organic compound, liquid crystal composition, liquid crystal element, and liquid crystal display device

An organic compound represented by General Formula (G100) is provided. A novel liquid crystal composition containing the organic compound is provided. 

A liquid crystal composition exhibiting a blue phase, which enables higher contrast, and a liquid crystal display device including the liquid crystal composition. The liquid crystal composition contains a chiral agent and liquid crystal containing a compound having three electron-withdrawing groups as end groups of a structure where a plurality of rings including at least one aromatic ring is linked to each other directly or with a linking group laid therebetween. At least one of the three electron-withdrawing groups includes a trifluoromethyl group. The peak of the diffracted wavelength on the longest wavelength side in the reflectance spectrum of the liquid crystal composition is less than or equal to 450 nm, preferably less than or equal to 420 nm. Furthermore, a liquid crystal display device can be provided with the use of the liquid crystal composition.

Liquid crystal composition and liquid crystal display device

In a rotating electric machine including a field pole unit having ten magnetic poles (P=10) and an armature having twelve teeth (Q=12), armature coils are wound around the successive teeth with phase relationships and winding polarities arranged in the order of U+/U+, U&#x2212;/V+, V&#x2212;/V&#x2212;, W&#x2212;/V+, W+/W+, W&#x2212;/U+, U&#x2212;/U&#x2212;, U+/V&#x2212;, V+/V+, W+/V&#x2212;, W&#x2212;/W&#x2212; and W+/U&#x2212;, where 'U,' 'V' and &#x201c;W&#x201d; represent three phases of the individual armature coils while &#x201c;+&#x201d; and &#x201c;&#x2212;&#x201d; denote winding polarities. Among all harmonic components of magnetomotive forces produced by the armature coils, harmonic components of orders lower than a synchronized component can be reduced in this rotating electric machine. This structure decreases eddy currents flowing in the field pole unit, resulting lower eddy current loss in the field pole unit of the rotating electric machine.

Electric machine

An armature of a rotating electric machine has a plurality of first magnetic teeth arranged side by side along a circumferential direction of the rotating electric machine and a plurality of second magnetic teeth joined to the first magnetic teeth. A pair of joint portions is formed at both end surfaces of a yoke portion of each first magnetic tooth, the joint portions formed at the facing end surfaces of the yoke portions of each successive pair of adjacent first magnetic teeth together forming a connecting part, whereas a mating part is formed at an outer end surface of each second magnetic tooth. Each second magnetic tooth is inserted between the adjacent first magnetic teeth along an axial direction of the rotating electric machine with the mating part fitted on the connecting part to interconnect the adjacent first magnetic teeth.

Growing community of inventors

Tokyo, Japan

Manabu Kobayashi