Kabushiki Kaisha Toshiba

Kioxia Corporation

Hajime Matsui

Takaya Ogawa

Akira Moriya

Shuou Nomura

Shunichi Ishiwata

Atsushi Mochizuki

Kazuyo Kanou

Yoshiro Tsuboi

Youhei Fukazawa

According to one embodiment, in an inverse element arithmetic apparatus, a word unit processing unit, as approximate calculation loop for extended binary GCD process, iterates a first loop in a case where a value of |r−s| is a subtraction threshold or more, and is capable of iterating a second loop instead of the first loop in a case where the value of |r−s| is smaller than the subtraction threshold. In the first loop, values of r, s, a, b, m, and n is updated and an update matrix M is generated or updated. In the second loop, the values of m and n are updated without updating the values of r, s, a, b and the update matrix M. The control unit terminates the loop of the inverse element arithmetic process in a case where a loop number of times of the inverse element arithmetic process reaches a number-of-times threshold.

Inverse element arithmetic apparatus and memory system

According to one embodiment, a key search circuit includes a hit determination circuit that determines whether a key search request hits a content stored in a search result buffer, and an update determination circuit that determines whether to update the content stored in the search result buffer. When the hit determination circuit determines that the key search request hits the search result buffer, the key search circuit outputs the search result stored in the search result buffer to an encryption/decryption circuit. When the update determination circuit determines to update the search result buffer, the key search circuit updates the content stored in the search result buffer with the key search request and a search result obtained from a range table.

Memory system for data encryption

A decoding device according to an embodiment includes: a reception memory for storing received image; a frame buffer for storing a reference image; a decoding unit for decoding the received image based on the reference image stored in the frame buffer; a reference image storage for storing the decoded image, decoded by the decoding unit, in the frame buffer as the reference image; and an output image selection unit for selecting the reference image stored in the frame buffer as an output image when the reception memory underflows and selecting the decoded image as the output image when the reception memory does not underflow.

Decoding device, image transmission system, and decoding method

According to one embodiment, an image output device includes a buffer into which video information input in stream data is written per block, a determination unit configured to determine whether the buffer is in an overflow state due to slow reproduction, and a buffering control unit configured to switch a buffering pattern of the video information based on a determination result of the determination unit.

Image output device, image output method, and recording medium

A moving image player device of the present invention includes an interpolated image generating unit that generates an interpolated frame corresponding to a time between two adjacent input frames using two input frames among the plurality of input frames, and a video playing unit that detects a scene change in the video, outputs the plurality of input frames or the interpolated frames in time series based on the detection result, and plays the video at an arbitrary playing speed. When the scene change is detected, the video playing unit skips a display of the interpolated frames corresponding to time between an input frame at the end of a first scene and an input frame at the head of a second scene, and displays an input frame of the second scene or the interpolated frame after the input frame at the end of the first scene or the interpolated frame.

Moving image player device

According to one embodiment, a motion vector detection device includes a reference image encoder, a cutoff module, a reference image decoder, and a block matching module. The reference image encoder is configured to generate a plurality of encoded components. The cutoff module is configured to select, according to a predetermined priority, one or a plurality of encoded components so that a data length is equal to or less than a predetermined fixed length. The reference image decoder is configured to decode the selected one or the plurality of encoded components to reproduce one or a plurality of image components. The block matching module is configured to detect, based on a motion-detection target block in an input image and the reproduced one or the plurality of image components of a matching-target block of the reference image corresponding to the motion-detection target block, a motion vector of the motion-detection target block.

Growing community of inventors

Yokohama Kanagawa, Japan

Hajime Matsui