compact disc wikipedia - EAS
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Xem tất cả trên WikipediaCompact disc - Wikipedia
https://en.wikipedia.org/wiki/Compact_discThe 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. In August 1982, the first compact disc was manufactured. It was then released in October 1982 and branded as Digital Audio Compact Disc. The
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Xem thêmA CD is made from 1.2-millimetre (0.047 in) thick, polycarbonateplastic and weighs 14–33 grams. From the center outward, components are: the center spindle hole (15 mm), the first-transition area (clamping ring), the
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Xem thêmAudio CD
The logical format of an audio CD (officially Compact Disc Digital Audio or CD-DA) is described in a document produced in 1980 by the format's joint creators, Sony and Philips. The document is known colloquially as...
Xem thêmIn 1995, material costs were 30 cents for the jewel case and 10 to 15 cents for the CD. Wholesale cost of CDs was $0.75 to $1.15, while the typical
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Xem thêmRecordable CD
Recordable Compact Discs, CD-Rs, are injection-molded with a "blank" data spiral. A photosensitive dye is then applied, after which the discs are metalized and lacquer-coated. The write laser of the CD recorderchanges the color of the...
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• 5.1 Music Disc
• Compact disc bronzing
• Comparison of popular optical data-storage systems
• Digipak
• DualDisc...
Xem thêm• Ecma International. Standard ECMA-130: Data Interchange on Read-only 120 mm Optical Data Disks (CD-ROM), 2nd edition (June 1996).
• Pohlmann, Kenneth C. (1992)....
Xem thêmThe Red Book audio specification, except for a simple "anti-copy" statement in the subcode, does not include any copy protectionmechanism. Known at least as early as 2001, attempts were made by record companies to market "copy-protected" non-standard
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Xem thêmVăn bản Wikipedia theo giấy phép CC-BY-SAMục này có hữu ích không?Cảm ơn! Cung cấp thêm phản hồiCD – Wikipedia tiếng Việt
https://vi.wikipedia.org/wiki/CDĐể hiểu những khái niệm cơ bản về đĩa quang, xin xem bài đĩa quang
Đĩa CD (tiếng Anh: Compact Disc) là một trong các loại đĩa quang, chúng thường chế tạo bằng chất dẻo, đường kính 4,75 inch, dùng phương pháp ghi quang học để lưu trữ khoảng 80 phút âm thanh hoặc 700 MB dữ liệu máy tính đã được mã hóa theo kỹ thuật số.Wikipedia · Nội dung trong CC-BY-SA giấy phépCompact disc - Simple English Wikipedia, the free encyclopedia
https://simple.wikipedia.org/wiki/Compact_DiscA Compact Disc, also called a CD is a storage device that are small plastic discs which store and retrieve computer data or music using light. Compact Discs replaced floppy disks because they were faster and could hold more information. The CDs made floppy disks become obsolete.CDs were invented by both Philips and Sony at the same time, but not together.
- Thời gian đọc ước tính: 50 giây
Compact Disc Digital Audio - Wikipedia
https://en.wikipedia.org/wiki/Compact_Disc_Digital_AudioXem thêm trên en.wikipedia.orgThe optophone, first presented in 1931, was an early device which used light for both recording and playback of sound signals on a transparent photograph. More than thirty years later, American inventor James T. Russell has been credited with inventing the first system to record digital video on an optical transparent foil tha…- Media type: Optical disc
- Capacity: up to 74–80 minutes (up to 24 minutes for mini 8 cm CD)
Compact disc - Wikipedia
https://nl.wikipedia.org/wiki/Compact_discXem thêm trên nl.wikipedia.orgArthur Schawlow en Charles Townes, verbonden aan Bell Labs vonden in 1958 de laser uit, dit heeft mogelijk de Amerikaanse uitvinder David Paul Gregg in 1961 geïnspireerd tot het indienen van een octrooi voor een optisch leesbare videoplaat. Paul Gregg deed zijn uitvinding toen hij werkte voor de Amerikaanse firma 3M. Hi…- Thời gian đọc ước tính: 8 phút
Disque compact — Wikipédia
https://fr.wikipedia.org/wiki/Disque_compactXem thêm trên fr.wikipedia.orgLa technique du disque compact repose sur une méthode optique : un faisceau de lumière cohérente (laser) vient frapper le disque en rotation. Les irrégularités (appelées « pits », cavités dont la longueur varie entre 0,833 et 3,56 µm, et dont la largeur est de 0,6 µm) dans la surface réfléchissante de celui-ci produisent des va…- Type de média: Disque optique
- Capacité: 0,21 à 0,91 Go, la plupart du temps 0,74 Go
Compact Disc – Wikipedia
https://de.wikipedia.org/wiki/Compact_Disc- CDs bestehen aus Polycarbonat sowie einer dünnen Metallschicht (z. B. Aluminiumbedampfung) mit Schutzlack und Druckfarben. Sie werden – im Gegensatz zu Schallplatten – nicht gepresst, sondern in Spritzgussmaschinen in Form auf die Vater-Matrize gespritzt. Die Anlagen zur Herstellung optischer Datenträger werden dennoch Presswerkgenannt.
- Größe: ø 12 cm bzw. 8 cm
Compact disc - Wikipedia
https://it.wikipedia.org/wiki/Compact_disc- La sua genesi è dovuta alla ricerca, da parte del mondo della telefonia, di un sistema efficiente di moltiplicazione delle informazioni, attraverso la digitalizzazione e semplificazione dei segnali. L'applicazione congiunta del sistema numerico binario e del laser al suonodiede vita al compact disc. Nei primi anni il progetto fu inizialmente seguito da una joint venture tra DuPont e Philips. …
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Disc compact - Wikipedia
https://ro.wikipedia.org/wiki/Disc_compactXem thêm trên ro.wikipedia.orgCD-urile au apărut nu prea îndepărtat de zilele noastre. Preocupările în acest domeniu s-au consemnat îndeosebi după anul 1980, în urma unei înțelegeri între renumitele companii Philips și Sony. Până la această dată fiecare dintre aceste două companii realizase, după propriile concepții și tehnologii, diferite variante d…- Codare: diverse
- Tip: Disc optic
- Mecanism de citire: laser de semiconductor cu lungimea de undă de 780 nm
Compact disc – Wikipédia, a enciclopédia livre
https://pt.wikipedia.org/wiki/Compact_DiscUm disco compacto, disco compacto a laser, disco a laser, compacto laser ou simplesmente disco laser (popularmente conhecido por CD, sigla para a designação inglesa, Compact Disc) é um disco ótico digital de armazenamento de dados.O formato foi originalmente desenvolvido com o propósito de armazenar e tocar apenas músicas, mas posteriormente foi adaptado para …
