Fujitsu Corporation

Yosuke Takabayashi

Yasuo Misuda

Yoshihiro Tomita

Kazuhiro Yamashita

Yousuke Yamaguchi

Yasushi Umezaki

Shotaro Ishikawa

Takafumi Kamito

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 video/audio synchronization apparatus includes: a decoder configured to decode a frame contained in encoded video data and determine playback time of the frame based on a first clock signal, and decode encoded audio data and determine playback time of an associated audio signal contained in the decoded audio data and to be played back simultaneously with the frame, based on a second clock signal different from the first clock signal; a silent period detector configured to detect a silent period from within the associated audio signal; and an audio timing adjuster configured to reduce a difference between the playback time of the frame and the playback time of the associated audio signal by skipping or repeating a silent period contained within a period of the associated audio signal.

Video/audio synchronization apparatus and video/audio synchronization method

Growing community of inventors

Sagamihara, Japan

Yosuke Takabayashi