Analysis of information sources in references of the Wikipedia article "Optical storage" in English language version.
Important Notice to the subscribers of the DVD-RW Format Specifications Book Ver.1.2
On October 1, 1982, Sony ignited a digital audio revolution with the release of the world's first commercial compact disc player, the CDP-101 (above), in Japan.
optical media, such as compact discs (CDs) and DVDs.