MAGNETIC RECORDER AND MAGNETOOPTICAL RECORDER
A virtual track in which the center (11) of rotation of a magnetic recording medium or a point in the vicinity thereof becomes the center of a data information track is set, and a positioning servo system is operated. Since this makes it unnecessary to faithfully follow a track center line defined b...
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Main Authors | , , , , , , , , , , , |
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Format | Patent |
Language | English French Japanese |
Published |
26.09.1996
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Edition | 6 |
Subjects | |
Online Access | Get full text |
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Abstract | A virtual track in which the center (11) of rotation of a magnetic recording medium or a point in the vicinity thereof becomes the center of a data information track is set, and a positioning servo system is operated. Since this makes it unnecessary to faithfully follow a track center line defined by servo information recorded in advance on a magnetic recording medium or a magnetooptical recording medium, vibration synchronous with the rotation of a disk rarely occurs. Therefore, when the center (11) of rotation and the center (12) of a pattern deviate from each other, the occurrence of vibration synchronous with the rotation of a disk is prevented, whereby a magnetic recorder or a magnetooptical recorder in which the track accuracy of a magnetic head or a magnetooptic head is improved, is obtained. This enables the recording density to be further improved.
Une piste virtuelle est établie. Dans cette piste, le centre de rotation (11) d'un support d'enregistrement magnétique ou un point qui en est voisin devient le centre d'une piste d'information de données, et un système d'asservissement pour positionnement est mis en oeuvre. Comme cela rend inutile de suivre fidèlement une ligne de piste définie par des informations d'asservissement enregistrées à l'avance sur un support d'enregistrement magnétique ou magnétooptique, il est rare que se produisent des vibrations synchrones avec la rotation d'un disque. C'est pourquoi, quand le centre de rotation (11) et le centre (12) d'un motif diffèrent l'un de l'autre, les vibrations synchrones avec la rotation d'un disque ne peuvent se produire, ce qui améliore la précision sur la piste d'une tête magnétique ou magnétooptique, dans un enregistreur correspondant. Cela permet d'améliorer davantage la densité d'enregistrement. |
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AbstractList | A virtual track in which the center (11) of rotation of a magnetic recording medium or a point in the vicinity thereof becomes the center of a data information track is set, and a positioning servo system is operated. Since this makes it unnecessary to faithfully follow a track center line defined by servo information recorded in advance on a magnetic recording medium or a magnetooptical recording medium, vibration synchronous with the rotation of a disk rarely occurs. Therefore, when the center (11) of rotation and the center (12) of a pattern deviate from each other, the occurrence of vibration synchronous with the rotation of a disk is prevented, whereby a magnetic recorder or a magnetooptical recorder in which the track accuracy of a magnetic head or a magnetooptic head is improved, is obtained. This enables the recording density to be further improved.
Une piste virtuelle est établie. Dans cette piste, le centre de rotation (11) d'un support d'enregistrement magnétique ou un point qui en est voisin devient le centre d'une piste d'information de données, et un système d'asservissement pour positionnement est mis en oeuvre. Comme cela rend inutile de suivre fidèlement une ligne de piste définie par des informations d'asservissement enregistrées à l'avance sur un support d'enregistrement magnétique ou magnétooptique, il est rare que se produisent des vibrations synchrones avec la rotation d'un disque. C'est pourquoi, quand le centre de rotation (11) et le centre (12) d'un motif diffèrent l'un de l'autre, les vibrations synchrones avec la rotation d'un disque ne peuvent se produire, ce qui améliore la précision sur la piste d'une tête magnétique ou magnétooptique, dans un enregistreur correspondant. Cela permet d'améliorer davantage la densité d'enregistrement. |
Author | KAWABE, TAKASHI AKAGI, KYO MATSUMOTO, KIYOSHI HAMAGUCHI, TAKEHIKO WATANABE, KATSURO UMEMOTO, MASUO SUZUKI, MIKIO HAMADA, YOUSUKE TSUCHIYA, REIJIRO SAITO, ATSUSHI SHIROISHI, YOSHIHIRO WAKABAYASHI, KOICHIRO |
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DocumentTitleAlternate | ENREGISTREUR MAGNETIQUE ET ENREGISTREUR MAGNETOOPTIQUE |
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Title | MAGNETIC RECORDER AND MAGNETOOPTICAL RECORDER |
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