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  2. File:Comparison CD DVD HDDVD BD.svg - Wikipedia

    en.wikipedia.org/wiki/File:Comparison_CD_DVD...

    Dimensions indicated are track pitch (p), pit width (w) and minimum length (l), and laser spot size (⌀) and wavelength (λ). For comparison with analogue media, the pitch of the spiral of a 240-groove-per-inch long-playing record and a Laserdisc are 106 μm (66 times the CD track pitch) and 4.6 μm (2.9 times), respectively.

  3. Comparison of high-definition optical disc formats - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_high...

    This article compares the technical specifications of multiple high-definition formats, including HD DVD and Blu-ray Disc; two mutually incompatible, high-definition optical disc formats that, beginning in 2006, attempted to improve upon and eventually replace the DVD standard. The two formats remained in a format war until February 19, 2008 ...

  4. Optical disc packaging - Wikipedia

    en.wikipedia.org/wiki/Optical_disc_packaging

    The CD jewel case is designed to carry a booklet, as well as to have panel inserts. These may be used to display album artwork, lyrics, photos, thank-yous, messages, biography, etc. [5] Because the CD jewel case is the standard, most-commonly used CD case, it is much cheaper. The price of the CD jewel case usually ranges from $0.75 to $0.95.

  5. Compact disc - Wikipedia

    en.wikipedia.org/wiki/Compact_disc

    t. e. 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. It uses the Compact Disc Digital Audio format which typically provides 74 minutes of audio on a disc. In later years, the compact disc was adapted for non-audio computer data storage ...

  6. Image resolution - Wikipedia

    en.wikipedia.org/wiki/Image_resolution

    Image resolution is the level of detail of an image. The term applies to digital images, film images, and other types of images. "Higher resolution" means more image detail. Image resolution can be measured in various ways. Resolution quantifies how close lines can be to each other and still be visibly resolved. Resolution units can be tied to ...

  7. Optical storage media writing and reading speed - Wikipedia

    en.wikipedia.org/wiki/Optical_storage_media...

    25.0 GB. 23.28 GiB. 90. Modern compact discs support a writing speed of 52× and higher, with some modern DVDs supporting speeds of up to 24×. [4] Writing a DVD at 1× (1 385 000 bytes per second) [5] is approximately 9 times faster than writing a CD at 1× (153 600 bytes per second). [6] However, the actual speeds depend on the type of data ...

  8. File talk:Comparison CD DVD HDDVD BD.svg - Wikipedia

    en.wikipedia.org/wiki/File_talk:Comparison_CD...

    I think that a 'micro' (mu) prefix is missing from 3 measurements, the CD pitch and spot size, and the DVD track pitch. These are shown as 1.6, 1.6 and 1.1 *metres*. Other dimensions are correctly prefixed as millimeteres or nanometres. I also think the ' laser spot size (⌀) ' character (phi?) is not being shown.

  9. Album cover - Wikipedia

    en.wikipedia.org/wiki/Album_cover

    An album cover (also referred to as album art) is the front packaging art of a commercially released studio album or other audio recordings. The term can refer to: the printed paperboard covers typically used to package: sets of 10 in (25 cm) and 12 in (30 cm) 78 rpm records. singles and sets of 12 in (30 cm) long-play records.