Wobble Frequency

Wobble Frequency

Lambert M. Surhone, Mariam T. Tennoe, Susan F. Henssonow

     

бумажная книга



Издательство: Книга по требованию
Дата выхода: июль 2011
ISBN: 978-6-1335-8806-6
Объём: 76 страниц
Масса: 135 г
Размеры(В x Ш x Т), см: 23 x 16 x 1

High Quality Content by WIKIPEDIA articles! DVDs and CDs have their data encoded on a single spiral, or a groove, which covers the surface of the disc. In case the optical medium is recordable, 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 synchronization source to achieve constant linear velocity while writing a disc. In addition, the slight wobble frequency modulation is used to encode some information, such as Absolute Time in Pregroove (ATIP) on CD-R and CD-RW discs. DVD-R and DVD-RW have a constant wobble frequency, whereas DVD+R also uses frequency modulation in a manner similar to CD-R and CD-RW. DVD+RW has a constant wobble frequency, but encodes its addressing information using phase-modulated wobble addressing.

Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.

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