Optical Videodisc for High-Definition Television by the MUSE
Tateo Toyama, Yoshihiro Morita, Toshiaki Hioki, Osamu Ohta, Yasuhiro Ishii, Yuichi Ninomiya, Yoshimichi Ohtsuka, Yoshinori Izumi, Seiichi Goushi · SMPTE Journal · 1986
The 1125-line HDTV system in Japan requires a bandwidth of over 20 MHz. For direct-disc recording, this means the signal can only be recorded for a short time. NHK and Sanyo Electric Co. have cooperatively developed a high-definition videodisc by the MUSE (multiple sub-Nyquist sampling encoding) which converts the HDTV signal into an 8.1-MHz analog signal with a compressed bandwidth, enabling the signal to be recorded on a disc. This article describes the recording system and playback system, and the sound-multiplexing system used for high-definition videodisc.