Matches in DBpedia 2014 for { <http://dbpedia.org/resource/Wobble_frequency> ?p ?o. }
Showing items 1 to 14 of
14
with 100 items per page.
- Wobble_frequency abstract "Optical discs with the exception of the DVD-RAM have their data encoded on a single spiral, or a groove, which covers the surface of the disc. In the case of recordable media, this spiral contains a slight sinusoidal deviation from a perfect spiral. The period of this sine curve corresponds to the wobble frequency. First of all, it is used as a synchronization source to achieve constant linear velocity while writing a disc. The frequencies quoted all assume that the disc is being written at the 'x1' speed. The frequencies are appropriately higher for faster writing speeds.CD-R and CD-RW discs, use a frequency modulated wobble of 140.6 kHz to encode some information, such as Absolute Time in Pregroove (ATIP) into the groove.DVD-R and DVD-RW have a constant wobble frequency of 140.6 kHz relying on data 'pits' beside the groove to convey information (Land pre-pit).DVD+R and DVD+RW have a constant wobble frequency of 817.4 kHz, but encodes its addressing information by periodically inverting the phase of the wobble signal (bi-phase modulation) to encode an exact address of the location on the spiral track (Address in Pregroove). The practical upshot of this arrangement is that the recording drive can navigate to an exact location on the DVD+R(W) disc whereas it cannot do so with the DVD-R(W).BD-R and BD-RE discs utilise Address in Pregrove. HD DVD-R and HD DVD-RW uses the land pre-pit system of the common or garden DVD-R(W).".
- Wobble_frequency wikiPageID "2188372".
- Wobble_frequency wikiPageRevisionID "570488015".
- Wobble_frequency hasPhotoCollection Wobble_frequency.
- Wobble_frequency subject Category:Blu-ray_Disc.
- Wobble_frequency subject Category:Compact_disc.
- Wobble_frequency subject Category:DVD.
- Wobble_frequency comment "Optical discs with the exception of the DVD-RAM have their data encoded on a single spiral, or a groove, which covers the surface of the disc. In the case of recordable media, this spiral contains a slight sinusoidal deviation from a perfect spiral. The period of this sine curve corresponds to the wobble frequency. First of all, it is used as a synchronization source to achieve constant linear velocity while writing a disc.".
- Wobble_frequency label "Wobble frequency".
- Wobble_frequency sameAs m.06tj8z.
- Wobble_frequency sameAs Q8028956.
- Wobble_frequency sameAs Q8028956.
- Wobble_frequency wasDerivedFrom Wobble_frequency?oldid=570488015.
- Wobble_frequency isPrimaryTopicOf Wobble_frequency.