Multiple sub-Nyquist sampling encoding

rdf:langString Multiple sub-Nyquist sampling encoding

rdf:langString MUSE (Multiple sub-Nyquist Sampling Encoding), commercially known as Hi-Vision (a contraction of HIgh-definition teleVISION) was a Japanese analog HDTV system, with design efforts going back to 1979. It used and digital video compression to deliver 1125 line, 60 field-per-second (1125i60) signals to the home. The system was standardized as ITU-R recommendation BO.786 and specified by SMPTE 260M, using a colorimetry matrix specified by SMPTE 240M. As with other analog systems, not all lines carry visible information. On MUSE there are 1035 active interlaced lines, therefore this system is sometimes also mentioned as 1035i. It employed 2-dimensional filtering, dot-interlacing, motion-vector compensation and line-sequential color encoding with time compression to "fold" an original 20 MHz bandwidth source signal into just 8.1 MHz. Japan began broadcasting wideband analog HDTV signals in December 1988, initially with an aspect ratio of 2:1. The Sony HDVS high-definition video system supported the MUSE system.By the time of its commercial launch in 1991, digital HDTV was already under development in the United States. Hi-Vision was mainly broadcast by NHK through their BShi satellite TV channel. On May 20, 1994, Panasonic released the first MUSE LaserDisc player. There were a number of players available from other brands like Pioneer and Sony, yet Hi-Vision LaserDiscs are extremely rare and expensive. Hi-Vision continued broadcasting in analog until 2007.