Fujitsu Corporation

Fujistu Limited

Hirofumi Nagaoka

Yasuhiro Watanabe

Noboru Yoneoka

Taro Hagiya

An encoding apparatus includes a processor that calculates and stores, an evaluation value for each candidate vector, based on a given block to be encoded among blocks formed by dividing an image, and a reference block on a reference image represented by each candidate vector that is a candidate motion vector of the given block; identifies an evaluation value of a first candidate motion vector of the given block, based on the stored evaluation values; calculates an evaluation value of a second candidate motion vector, based on the evaluation value of each candidate vector and the second candidate motion vector selected for the given block from among motion vectors of blocks adjacent to the given block; and determines the first or the second candidate motion vector to be the motion vector of the given block, based on the respective evaluation values of the first and the second candidate motion vectors.

Encoding apparatus, encoding method, and computer product

A semiconductor device including a first processing unit processing an input signal based on a plurality of image compression standards, a signal generation unit outputting a switching signal to the first processing unit, a first calculation unit performing an operation on the input signal in accordance with a first coefficient that is based on the switching signal, a second calculation unit performing an operation on an output of the first calculation unit in accordance with a second coefficient that is based on the switching signal, a selection unit selecting one of the output of the first calculation unit and an output of the second calculation unit based on the switching signal, and a third calculation unit selecting one or both of the input signal and the output of the first calculation unit based on the switching signal and performing a predetermined calculation on the selected signal.

Semiconductor device and signal processing method

In order to enable a rewrite of stored data to be omitted and to reduce a processing time of error concealment even if an error is detected in a process for sequentially storing variable-length data in a memory and the rewrite of the stored data is necessary, variable-length data from which an error is not detected is sequentially stored at and after a predetermined position in the memory, and error information that includes a restoration address that corresponds to an area in which variable-length data from which an error is detected is to be stored and that specifies variable-length data stored earliest in the memory from among data to be replaced with error concealment data is stored at a position preceding the predetermined position, when the error is detected.

Variable-length data storing method and variable-length data storing device

An image decoding apparatus includes a memory, a detecting part which receives data of a plurality of macroblocks included in an image and detects whether or not a first macroblock included in the plurality of macroblocks has an intra-block, and a control part which writes a DCT coefficient of the first macroblock into the memory when the detecting part determines that the first macroblock has the intra-block, and does not write the DCT coefficient of the first macroblock into the memory when the detecting part determines that the first macroblock has no intra-block.

Growing community of inventors

Kawasaki, Japan

Hirofumi Nagaoka