Kabushiki Kaisha Toshiba

Toshiba Memory Corporation

Yosuke Bando

Kenichi Maeda

Masahiro Ishiyama

Yujen Lai

Takahiro Saito

Hiroki Kudo

Takeshi Sakoda

Kenichi Mori

Hironori Uchikawa

Atsuhiro Kinoshita

Osamu Torii

Hiroto Nakai

Ren Sakata

Atsushi Kunimatsu

Yoshiyuki Kokojima

Yusuke Doi

Takaomi Murakami

Youyang Ng

Tomoyuki Nishida

According to one embodiment, a communication apparatus is provided. The communication apparatus receives first content including first additional information from a first terminal, generates second additional information, adds the second additional information to second content, and transmits the second content to a second terminal. The second additional information includes an authentication code unique to blocks in the second content and the communication apparatus and a signature unique to the authentication code. The communication apparatus generates receipt information and transmits the receipt information to an external apparatus when a transmission source of the first content is verified to be the first terminal based on the first additional information.

Communication apparatus

According to one embodiment, a communication apparatus includes a radio interface unit that sends a data message to a receiver and extracts, when a message sent by the receiver via unicast with an optimized transmission rate is received, rate information indicating the optimized transmission rate of the receiver from the received message, a message processor that generates the data message, in which a multicast identifier indicating a multicast group is a destination, and outputs the data message to the radio interface unit, and a selector that selects, according to the rate information, a data message transmission rate to send the data message.

Communication apparatus and communication method

According to one embodiment, a communication apparatus includes a congestion degree calculating unit and an operation mode setting unit. The congestion degree calculating unit calculates a third congestion degree related to wireless communication based on a first congestion degree of first wireless communication and a second congestion degree of second wireless communication. In the first wireless communication, peer-to-peer communication is performed directly between communication apparatuses, and in the second wireless communication, communication is performed through a wireless communication device. The operation mode setting unit switches an operation mode of the first wireless communication based on the third congestion degree to either of a mode in which the communication apparatus transmits content or a mode in which the communication apparatus receives content.

According to one embodiment, a communication apparatus includes an operation mode storage unit that stores a mode in which the communication apparatus operates as a wireless base station or a terminal and a non-volatile memory, wherein a transmission message is output to the outside when the communication apparatus operates as the wireless base station, data included in a received reception message is stored in the non-volatile memory when the communication apparatus operates as the terminal, and when the communication apparatus operates as the wireless base station, after all data transmitted from a first external wireless base station is received, if a communication quality with the first wireless base station is less than a predetermined value, and no message is received from a wireless base station other than the first wireless base station, a channel selection and switching process is performed, and then the operation mode is changed from the terminal to the wireless base station.

According to one embodiment, a communication deviceoperating as a publisher calculates parity of a certain size which is capable of being commonly used for each of different data units from data to be sent each time receiving a lost notification from one or more communication deviceoperating as subscribers, the lost notification indicating that one or more data units are lost, and sends the calculated parity to the one or more communication devicesoperating as the subscribers.

Communication device and communication system

According to one embodiment, a semiconductor memory device includes a memory and a controller. The memory stores data pieces and search information including entries, where each entry is associated with a search key for specifying one data piece and a real address at which the data piece is stored. Upon reception of a first command, the controller, when the first command specifies a search key, outputs one data piece corresponding to one entry which includes the search key, and when the first command specifies one real address, outputs one data piece corresponding to one entry including the real address.

Semiconductor memory device and information processing device

An image processing device according to an example of the invention comprises a differentiating section which differentiates input image data to generate gradient image data, a gradient domain deconvolution processing section which applies a deconvolution to the gradient image data, the deconvolution performing deblurring corresponding to a prior distribution of an image gradient of an image to generate deconvolved data, and an integrating section which integrates the deconvolved data to generate deblurred image data.

Device and method for gradient domain image deconvolution

An image conversion device according to an example of the invention comprises a blur estimating unit which estimates a blur state of input image data, a blur changing unit which changes the blur state estimated by the blur estimating unit into an arbitrary blur state, and an image constructing unit which constructs output image data on the basis of a blur changing result obtained by the blur changing unit.

Image conversion device, image conversion method, and recording medium

A rendering apparatus includes a rasterizer, pixel processing units and memories. The rasterizer generates pixels corresponding to graphics. The pixel processing units execute rendering operations for the pixels generated by the rasterizer. The pixels rendered by the same pixel processing unit are positioned substantially equidistantly and isotropically within a rendering area. The memories are provided in association with the respective pixel processing units and store data of the pixels rendered by the associated pixel processing units.

Graphic rendering apparatus which parallel-processes pixels at a time

A setup section acquires vertex data including at least homogeneous coordinate and window coordinate relevant to two vertexes of rendering primitive, that is, segment. An edge coefficient calculation unit calculates an edge coefficient used for determining whether or not a pixel exists inside a projection area (parallelogram) of the segment. A bounding box calculation unit calculates a bounding box of the projection area from at least one vertex data of two vertexes and the edge coefficient. A start point determination unit classifies the projection area based on a combination of the edge coefficient, and determines scan start point and scan performing direction of the bounding box in accordance with the classification. An edge function initial value determination unit determines an edge function of the pixel corresponding to the scan start point as an initial value, and carries out a DDA, and thereby, generates setup data for rasterizing.

Rendering apparatus, rendering processing method and computer program product

An image rendering method includes generating pixels in accordance with graphic information, determining a direction of anisotropy of a footprint obtained by projecting the pixel on a texture on which a set of texels are disposed on uv-coordinates, and executing sampling of a MIP map in accordance with the direction of anisotropy, and executing texture mapping for the pixel. The direction of anisotropy is determined by comparing lengths in at least three different directions of the footprint on the texture.

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Yokohama, Japan

Yosuke Bando