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1. 发明申请

WO1998015949A1 RECORDING MEDIUM AND INFORMATION RECORDER/REPRODUCER 审中-公开
标题翻译：记录媒体和信息记录器/复印机
公开(公告)号：WO1998015949A1
公开(公告)日：1998-04-16
申请号：PCT/JP1997003481
申请日：1997-09-29
申请人： SANYO ELECTRIC CO., LTD. , YAMAGUCHI, Atsushi , TORAZAWA, Kenji , SUMI, Satoshi , TANASE, Kenji , SUZUKI, Yoshihisa
发明人： SANYO ELECTRIC CO., LTD.
IPC分类号： G11B07/00
CPC分类号： G11B7/126 , G11B7/0045 , G11B7/125 , G11B7/1365 , G11B11/10595
摘要： To record/reproduce information on/from recording media by laser beams whose powers are optimized for individual recording media respectively. In addition to an information recording region, a calibration region is provided in each recording medium. A wobble is formed in the calibration region in order to change the amplitude of the waveform of a reproducing signal from the calibration region. Preceding the recording in the information recording region, signals are recorded in the calibration region while a laser power is changed and the recorded signals are immediately reproduced. The reproduced signal waveforms are evaluated and an optimum laser power for recording is determined. When the signals are reproduced, signals which are recorded in the calibration region beforehand are reproduced while a laser power is changed and an optimum laser power for reproduction is determined.
摘要翻译：通过分别为各个记录介质优化功率的激光束在记录介质上记录/再现信息。除了信息记录区域之外，在每个记录介质中提供校准区域。在校准区域中形成摆动以便改变来自校准区域的再现信号的波形的幅度。在信息记录区域中的记录之前，信号被记录在校准区域中，同时激光功率改变并且记录信号被立即再现。评估再现的信号波形，并确定用于记录的最佳激光功率。当再现信号时，预先在激光功率改变时再现记录在校准区域中的信号，并且确定用于再现的最佳激光功率。

2. 发明申请

WO1998002878A1 MAGNETO-OPTICAL RECORDING MEDIUM, ITS REPRODUCING METHOD AND REPRODUCER 审中-公开
标题翻译：磁光记录介质，其再现方法和再现器
公开(公告)号：WO1998002878A1
公开(公告)日：1998-01-22
申请号：PCT/JP1997002420
申请日：1997-07-11
申请人： HITACHI MAXELL, LTD. , SANYO ELECTRIC CO., LTD. , AWANO, Hiroyuki , SHIRAI, Hiroshi , YOSHIHIRO, Masafumi , OONUKI, Satoru , OHTA, Norio , SHIMAZAKI, Katsusuke , NAGAI, Nobuyuki , SUMI, Satoshi , YAMAGUCHI, Atsushi
发明人： HITACHI MAXELL, LTD. , SANYO ELECTRIC CO., LTD.
IPC分类号： G11B11/10
CPC分类号： G11B11/10584 , G11B11/1051 , G11B11/10515 , G11B11/10554 , G11B11/10586 , G11B11/10595 , G11B27/19 , G11B27/3027
摘要： Reproducing light (13) is applied to a magneto-optical recording medium (11) and only a minute magnetic domain (313b) which is smaller than a half of the spot diameter of the reproducing light (13) is selected by a gate layer (17) and transferred onto a magnetic domain expanding/reproducing layer (3) and the transferred magnetic domain is expanded by an expanding/reproducing magnetic field (411) which is an alternating magnetic field. A large reproducing signal output is obtained from the expanded magnetic domain (419) and the minute magnetic domain can be reproduced with a high resolution and a high S/N. The expanded magnetic domain (419) is contracted by a contracting/reproducing magnetic field (415) which is an alternating magnetic field. The thickness of the gate layer (17) is larger than the thickness of the magnetic wall of the magnetic domain of the gate layer (17). A nonmagnetic layer may be used instead of the gate layer (17).
摘要翻译：再现光（13）被施加到磁光记录介质（11），并且只有小于再现光（13）的光点直径的一半的微小磁畴（313b）由栅极层（ 17）并转移到磁畴扩展/再现层（3）上，并且通过作为交变磁场的扩展/再现磁场（411）来扩展转移的磁畴。从扩展磁畴（419）获得大的再现信号输出，并且可以以高分辨率和高S / N再现微小磁畴。扩展的磁畴（419）由作为交变磁场的收缩/再现磁场（415）收缩。栅极层（17）的厚度大于栅极层（17）的磁畴的磁壁的厚度。可以使用非磁性层代替栅极层（17）。

3. 发明申请

WO1998002877A1 MAGNETO-OPTICAL RECORDING MEDIUM, ITS REPRODUCING METHOD AND REPRODUCER 审中-公开
标题翻译：磁光记录介质，其再现方法和再现器
公开(公告)号：WO1998002877A1
公开(公告)日：1998-01-22
申请号：PCT/JP1997002419
申请日：1997-07-11
申请人： HITACHI MAXELL, LTD. , SANYO ELECTRIC CO., LTD. , OONUKI, Satoru , YOSHIHIRO, Masafumi , NAGAI, Nobuyuki , SHIMAZAKI, Katsusuke , AWANO, Hiroyuki , SHIRAI, Hiroshi , OHTA, Norio , SUMI, Satoshi , YAMAGUCHI, Atsushi
发明人： HITACHI MAXELL, LTD. , SANYO ELECTRIC CO., LTD.
IPC分类号： G11B11/10
CPC分类号： G11B11/10515 , G11B7/00745 , G11B11/10508 , G11B11/10521 , G11B11/10528 , G11B11/10578 , G11B11/10584 , G11B11/10593 , G11B11/10595 , G11B27/19 , G11B27/3027
摘要： A magneto-optical recording medium (11) has a second auxiliary magnetic film (4), a first auxiliary magnetic film (5) and a magneto-optical recording film (6) in this order from the laser beam applied side. If the temperatures of the first and second auxiliary magnetic films (4 and 5) exceed their critical temperatures TCR1 and TCR2, the magnetization of the auxiliary magnetic films is changed from the surface magnetization to the vertical magnetization. The Curie points TC0, TC1 and TC2 of the magneto-optical recording film (6), the first auxiliary magnetic film (4) and the second auxiliary magnetic film (5) and the critical temperatures TCR1 and TCR2 satisfy the relations room temperature
摘要翻译：从激光束施加侧开始，磁光记录介质（11）具有第二辅助磁膜（4），第一辅助磁膜（5）和磁光记录膜（6）。如果第一和第二辅助磁膜（4和5）的温度超过它们的临界温度TCR1和TCR2，则辅助磁膜的磁化从表面磁化转变为垂直磁化。磁光记录膜（6），第一辅助磁性膜（4）和第二辅助磁性膜（5）的居里点TC0，TC1和TC2以及临界温度TCR1和TCR2满足关系室温

4. 发明申请

WO1998016929A1 DIGITAL RECORDING METHOD, DIGITAL DISK, DIGITAL DISK RECORDING DEVICE, AND DIGITAL DISK REPRODUCING DEVICE 审中-公开
标题翻译：数字记录方法，数字磁盘，数字磁盘记录装置和数字磁盘再现装置
公开(公告)号：WO1998016929A1
公开(公告)日：1998-04-23
申请号：PCT/JP1997002621
申请日：1997-07-28
申请人： SANYO ELECTRIC CO., LTD. , HORI, Yoshihiro , MATSUYAMA, Hisashi , KUNISA, Akiomi , ITOH, Nobuo , TAKAHASHI, Seiichiro , HIOKI, Toshiaki , ASANO, Kenji , MAMIYA, Noboru , UCHIHARA, Yoshiharu , NAKAO, Kenji , SUMI, Satoshi , TORAZAWA, Kenji
发明人： SANYO ELECTRIC CO., LTD.
IPC分类号： G11B20/14
CPC分类号： G11B7/0045 , G11B7/004 , G11B7/00718 , G11B7/00745 , G11B7/24082 , G11B11/10502 , G11B11/10504 , G11B11/10515 , G11B11/10595 , G11B20/1426 , G11B27/24 , G11B2020/1457 , G11B2220/216 , G11B2220/2562
摘要： A meandering groove is formed in a digital disk (10) by wobble signals wobbled to reproduce clock signals. An optical head (26) reads the wobbling signals and an address detecting circuit (4) detects an address signal multiplexed with the wobbling signals. A PLL oscillation circuit (24) outputs a clock signal synchronized with the wobbling signals, the data are modulated by means of a modulation circuit (16) based on the clock signal and a timing signal which is generated on the basis of the address signal, and the modulated data are recorded on the disk (10). To reproduce data, an A/D converter (42) converts an RF signal contained in the wobble signals into a digital signal and a demodulation circuit (44) demodulates the data and outputs the demodulated data.
摘要翻译：通过摆动的摆动信号在数字盘（10）中形成曲折的凹槽以再现时钟信号。光头（26）读取摆动信号，地址检测电路（4）检测与摆动信号复用的地址信号。 PLL振荡电路（24）输出与摆动信号同步的时钟信号，通过基于时钟信号的调制电路（16）和基于地址信号生成的定时信号对数据进行调制，并且将调制数据记录在盘（10）上。为了再现数据，A / D转换器（42）将摆动信号中包含的RF信号转换为数字信号，解调电路（44）对数据进行解调并输出解调数据。

5. 发明申请

WO1998013823A1 RECORDING MEDIUM AND ITS REPRODUCER 审中-公开
标题翻译：记录媒体及其复印机
公开(公告)号：WO1998013823A1
公开(公告)日：1998-04-02
申请号：PCT/JP1997002442
申请日：1997-07-14
申请人： SANYO ELECTRIC CO., LTD. , ASANO, Kenji , MAMIYA, Noboru , UCHIHARA, Yoshiharu , SUMI, Satoshi , NAKAO, Kenji , WATANABE, Hiroshi , HIOKI, Toshiaki , HORI, Yoshihiro , MATSUYAMA, Hisashi , TORAZAWA, Kenji , TANASE, Kenji , TANAKA, Sayoko , SUZUKI, Yoshihisa , HORI, Shigeki
发明人： SANYO ELECTRIC CO., LTD.
IPC分类号： G11B07/007
CPC分类号： G11B7/00745 , G11B7/005 , G11B7/00718 , G11B11/10563
摘要： A magneto-optic recording medium and its reproducer by which reproduced data having excellent characteristics can be obtained with a sample construction. The magneto-optic recording medium which has a plurality of first grooves (3) whose side walls (at least side walls of one side) are wobbled in accordance with address information, address marks (21) which are represented by the changing widths of lands provided between second grooves (which are connected to the first grooves) and third grooves (3) whose side walls on both the sides are symmetrical and wobbled periodically and which are so formed in data parts on which data are magnetically recorded so as to be connected to the second grooves and its reproducer are provided.
摘要翻译：通过采样构造可以获得具有优异特性的再现数据的磁光记录介质及其再现器。具有多个第一凹槽（3）的磁光记录介质，其多个第一凹槽（3）的侧壁（至少一侧的侧壁）根据地址信息而摆动，地址标记（21）由土地的变化宽度设置在第二沟槽（与第一沟槽连接）和第三沟槽（3）之间，第三沟槽（3）的两侧的侧壁周期性地对称且摆动，并且在数据部分上形成磁数据，以便连接数据提供第二凹槽及其再现器。

6. 发明申请

WO1997031373A1 MAGNETO-OPTICAL RECORDING MEDIUM ON WHICH INFORMATION IS RECORDED BY OPTICAL SUPER-RESOLUTION METHOD, AND RECORDING/REPRODUCING APPARATUS FOR THE SAME MEDIUM 审中-公开
标题翻译：通过光学超分辨率方法记录信息的磁光记录介质，以及用于相同介质的记录/再现装置
公开(公告)号：WO1997031373A1
公开(公告)日：1997-08-28
申请号：PCT/JP1997000468
申请日：1997-02-20
申请人： SANYO ELECTRIC CO., LTD. , SUMI, Satoshi , SUZUKI, Yoshihisa , YAMAGUCHI, Atsushi , TANASE, Kenji , UCHIHARA, Yoshiharu , TORAZAWA, Kenji , MURATA, Seiji
发明人： SANYO ELECTRIC CO., LTD.
IPC分类号： G11B11/10
CPC分类号： G11B11/1051 , G11B11/10508 , G11B11/10515 , G11B11/10543 , G11B11/10586
摘要： A magneto-optical disk and a recording/reproducing apparatus therefor employ an optical super-resolution method so as to increase the recording capacity. The magneto-optical disk has a heat radiating layer (6) on a recording layer (4), and preferably an intermediate layer (8) between a reproduction layer (3) and the recording layer (4). The recording/reproducing apparatus is provided with a circuit (33) for producing light pulses from a laser beam and applying them to the magneto-optical disk, and preferably a plane-of-polarization rotating unit (50) and a polarization filter (51) for interrupting only the central portion of the laser beam during the reproduction. The heat generated by the laser beam is dissipated through the heat radiating layer (6), and the laser beam is intermittently applied, so that the recording domain decreases. Since the central portion of the laser beam is interrupted, the laser beam forms a small main lobe due to diffraction.
摘要翻译：磁光盘及其记录/再现装置采用光学超分辨率方法以增加记录容量。磁光盘在记录层（4）上具有热辐射层（6），优选在再现层（3）和记录层（4）之间具有中间层（8）。记录/再现装置设置有用于产生来自激光束的光脉冲并将其施加到磁光盘的电路（33），并且优选地是偏振平面旋转单元（50）和偏振滤光器（51）），用于在再现期间仅中断激光束的中心部分。由激光束产生的热量通过散热层（6）消散，并且激光束被间歇地施加，使得记录域减小。由于激光束的中心部分被中断，激光束由于衍射而形成小的主瓣。

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