Compact disc
Compact disc (CD) is a digital optical disc data storage format that was co-developed by Philips and Sony and released in 1982. The format was originally developed to store and play only sound recordings (CD-DA) but was later adapted for storage of data (CD-ROM). Several other formats were further derived from these, including write-once audio and data storage (CD-R), rewritable media (CD-RW), Video Compact Disc (VCD), Super Video Compact Disc (SVCD), Photo CD, PictureCD, CD-i, and Enhanced Music CD. The first commercially available audio CD player, the Sony CDP-101, was released October 1982 in Japan.
History of science and technology in Japan
In 1984, Sony introduced a LaserDisc format that could store any form of digital data, as a data storage device similar to CD-ROM, with a larger capacity of 3.28 GiB. The DVD format was developed by Sony, Panasonic and Toshiba in 1994. The same year, Sony and Tatung Company released the first DVD player.Flash memory (both NOR and NAND types) was invented by Dr. Fujio Masuoka while working for Toshiba around 1980.Dr. Norikazu Sawazaki invented a prototype video tape recorder in 1953, based on helical scan technology.In Japan, the computer was using digital video disks to display color pictures at 256x256 image resolution in 1972.