Akihiro Shikakura

Digital information transmitting and receiving system

Digital signal recording apparatus time-division multiplexing video and audio signals

Image signal coding device

Image coding/decoding method and apparatus

Image processing apparatus and method for concealing errors by replacing only part of a block

Image encoding apparatus having an intrapicture encoding mode and interpicture encoding mode

Information recording apparatus having variable compression ratio

Error detection and correction device

Error correcting apparatus

Phase-locked loop device having stability over wide frequency range