Fujitsu Corporation

Yousuke Yamaguchi

Kazuhiro Yamashita

Takato Ohashi

Shunsuke Kobayashi

Yasuo Misuda

Noriaki Tsukuda

Yuji Nomura

Yoshihiro Tomita

Atsushi Ichiki

Shin Fujita

Naoyuki Takeshita

Hiroshi Ohtsuru

Naoshi Kayashima

Shotaro Ishikawa

Takafumi Kamito

Hisayoshi Naito

Yosuke Takabayashi

An encoding device includes a processor configured to execute a process. The process includes: first calculating, based on a first system rate for encoding data and transmitting the encoded data to a terminal and a second system rate representing a rate for reproducing the data at the terminal, a decoder storage time during which the encoded data received by the terminal is stored; and adding information of the decoder storage time to the encoded data and transmitting the encoded data added with the information to the terminal.

Encoding device, encoding method, and recording medium

A video data processing device includes: a processor; and a memory which stores a plurality of instructions, which when executed by the processor, cause the processor to execute: making, on the basis of first key frames obtained by encoding images in frames included in moving image data, difference frames in each of which a partial image different from an image in a frame corresponding to each first key frame is encoded; and generating, if the number of generated difference frames reaches a first number, in response to detection that a difference between a difference frame generated thereafter and a difference frame preceding in time to the difference frame generated thereafter is not larger than a given value, a second key frame distinguished from the first key frames and obtained by encoding an image in the frame.

Video data processing device and method

At the time of an encoding process, a video elementary stream is generated and output by capturing and encoding a video image signal at a time interval of a video frame synchronous with a timing of a video synchronization signal, and an audio elementary stream is generated by capturing and encoding an audio signal at each audio interval. An audio packetized elementary stream where one packet has a stream length corresponding to the time interval of the video frame is multiplexed with the audio elementary stream, and the stream is output.

Elementary stream multiplexing method, multiplexing system, encoding or decoding method and apparatus

A coding apparatus is for performing a deblocking filter process by dividing input moving image data into frames, and coding the moving image data by dividing the frames into macroblock lines and by shifting and changing, for each frame, a refresh area in which an amount of coding information allocated to a specific macroblock line is larger than that of another macroblock line. The coding apparatus includes a determining unit that determines that a refresh area in a current frame as well as a macroblock line in the current frame corresponding to a macroblock line that will become a refresh area in a frame being subsequently subjected to the coding process becomes a next refresh area. The coding apparatus includes a coding unit that codes the refresh area and the next refresh area by allocating a larger amount of coding information than an amount allocated to the other macroblock line.

Slice coding allocation method, apparatus and circuit

In a moving picture decoding apparatus, a variable-length decoding circuit decodes motion vectors for each macroblock from a bit stream and stores the motion vectors. An error correction circuit calculates a reference vector for an error macroblock using the motion vectors to generate a corrected picture from a reference picture. An inverse-orthogonal transform circuit stores a difference value between direct-current (DC) components after Inverse Discrete Cosine Transform (IDCT) is performed thereon, in the memory for each macroblock. The error correction circuit further calculates a difference value of the DC component of the error macroblock using the difference values of DC components stored in the memory, to add the difference value calculated to the corrected picture generated from the reference picture.

Apparatus for and method of decoding moving picture, and computer product

Each of a plurality of encoders calculates a first time by adding an encoding delay time commonly determined between the encoders to a value of an STC counter, and transmits a system stream generated by including the calculated first time to a decoder associated with the encoder in one-to-one correspondence, of a plurality of decoders constituting a decoding system. Each of the decoders calculates a second time by adding the first time to an estimated maximum value commonly determined between the decoders by adding a decoding delay time to a value of stream fluctuation of an output time occurring between the encoders, and outputs the divided image data decoded from the system stream to a synthesizer that synthesizes the image data at the calculated second time.

Encoding/decoding system, encoding system, and decoding system

An encoding apparatus encodes a picture by inserting an intra-refresh area into a portion of the picture periodically based on an intra-refresh period. An encoding-status monitoring unit monitors an encoding status of the picture. A refresh-area control unit changes at least one of the intra-refresh area and the intra-refresh period based on the encoding status monitored by the encoding-status monitoring unit.

Growing community of inventors

Fukuoka, Japan

Yousuke Yamaguchi