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The compact disc (CD) is a digital optical disc data storage format that was co-developed by Philips and Sony to store and play digital audio recordings. The first compact disc was manufactured in August 1982, and was first released in Japan in October 1982 as Compact Disc Digital Audio.
- Various
- Rainbow Books
Die Compact Disc (kurz CD, englisch für kompakte Scheibe) ist ein optischer Datenträger, der Anfang der 1980er Jahre als erster digitaler Tonträger von Philips / PolyGram und Sony in Zusammenarbeit mit dem Chemiekonzern Bayer eingeführt wurde und die Kassette ablösen sollte.
- ø 12 cm bzw. 8 cm
- 176 kB/s (CD-DA), 150 kB/s (1×), 10800 kB/s (72×)
- 150 kB/s (1×), 8400 kB/s (56×)
- Optisches Speichermedium
Compact disc manufacturing is the process by which commercial compact discs (CDs) are replicated in mass quantities using a master version created from a source recording. This may be either in audio form ( CD-DA) or data form ( CD-ROM ). This process is used in the mastering of read-only compact discs. DVDs and Blu-rays use similar ...
Making a compact disc involves first preparing a glass "disc master." This master is then encoded with the desired information and put through a series of electroforming steps. In electroforming, metal layers are deposited on the glass master using electric currents.
7. März 2024 · compact disc (CD), a molded plastic disc containing digital data that is scanned by a laser beam for the reproduction of recorded sound and other information. Since its commercial introduction in 1982, the audio CD has almost completely replaced the phonograph disc (or record) for high-fidelity recorded music.
- The Editors of Encyclopaedia Britannica
17. Apr. 2018 · Nature Electronics - An international collaboration between Philips and the Sony Corporation led to the creation of the compact disc. Kees A. Schouhamer Immink explains how it came about.
12. März 2019 · Forty years ago the world got its first glimpse of what would become one of the most important music devices in history - the compact disc (CD). The CD was invented in 1979. At a time before...
