Improved high-density phase-change recording

By using a simple write strategy we have found that a wide range of linear velocities can be covered for direct overwrite in high-density phase-change recording. This is especially advantageous for data recording where the application of constant angular velocity facilitates fast seek and short rand...

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Bibliographic Details
Published inJapanese Journal of Applied Physics Vol. 36; no. 1B; pp. 491 - 494
Main Authors JACOBS, B. A. J, DUCHATEAU, J. P. W. B
Format Conference Proceeding Journal Article
LanguageEnglish
Published Tokyo Japanese journal of applied physics 1997
Subjects
Applied sciences
Electronics
Exact sciences and technology
Magnetic and optical mass memories
Storage and reproduction of information
Optical disk
Optical recording
Experimental study
Phase change
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Summary:By using a simple write strategy we have found that a wide range of linear velocities can be covered for direct overwrite in high-density phase-change recording. This is especially advantageous for data recording where the application of constant angular velocity facilitates fast seek and short random-access times. In the case of repeated overwriting, material flow will limit the number of cycles, particularly if a fixed pseudo-random data pattern is used. We studied how a random bit shift can reduce this problem and found that a relatively large shift of up to 100 bytes was required. Using these techniques in an optimized disc structure we achieved more than 100,000 overwrite cycles on a 2.6 Gbyte 12 cm phase-change disc.
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.36.491