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1. 发明公开

KR1020000064429A 광자기기록매체및그재생방법 无效
标题翻译：磁光记录介质及其再现方法
公开(公告)号：KR1020000064429A
公开(公告)日：2000-11-06
申请号：KR1019980704554
申请日：1996-12-20
申请人： 히다치 마쿠세루가부시키가이샤
发明人： 오누키사토루 , 오타노리오 , 시마자키가츠스케 , 요시히로마사후미 , 다카오히로키 , 와타나베히토시
IPC分类号： G11B11/10
CPC分类号： G11B11/10515 , G11B11/10584 , G11B11/10593
摘要： 광자기기록매체(11)은기판(1)상에제2 보조자성막(4), 제1 보조자성막(5), 광자기기록막(6)을구비한다. 보조자성막(4), (5)는임계온도T, T로면내자화에서수직자화로전이한다. T>T의관계를가지므로광스폿내의보조자성막의온도프로파일을이용하면, 재생시에광자기기록막(6)에서제1 보조자성막(5)에전사한자구는한층큰 직경으로확대되어제2 보조자성막(4)에전사된다. 제1 보조자성막(5) 대신비자성막(9)를사용해서정자결합에의해광자기기록막(6)의자구를확대전사시킬수 있다. 재생시에는재생클럭과동기해서파워변조된펄스재생광을사용할수 있다. 미소한자구가기록된경우에도증폭된재생신호강도가검출되고양호한 C/N이얻어진다.
摘要翻译：磁光记录介质11在基板1上具有第二辅助膜4，第一辅助膜5和磁光记录膜6。在临界温度T和T下，辅助膜（4）和（5）分别从面内磁化转变为垂直磁化。 T> T时，使用光点中的辅助膜的温度分布，在这种情况下，在再现时，从磁光记录膜6到第一辅助膜5的转印膜被扩大到更大的直径，并转移到电影形成4。通过使用非磁性膜9的精子结合来代替第一辅助膜5，能够扩大并输送分辨型磁记录膜6的球。在再现时，可以使用与再现时钟同步进行功率调制的脉冲再现光。即使记录了微小的磁条，也能检测到放大的读取信号强度，并获得良好的C / N。

2. 发明公开

KR1020000023634A 광자기기록매체, 그 재생방법 및 재생장치 无效
标题翻译：光磁记录介质及其再生方法及装置
公开(公告)号：KR1020000023634A
公开(公告)日：2000-04-25
申请号：KR1019997000083
申请日：1997-07-11
申请人： 히다치 마쿠세루가부시키가이샤 , 산요덴키가부시키가이샤
发明人： 아와노히로유키 , 시라이히로시 , 요시히로마사후미 , 오누키사토루 , 오타노리오 , 시마자키가츠스케 , 나가이노부유키 , 스미사토시 , 야마구치아츠시
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： PURPOSE: An optical magnetic record medium is provided to be easy to control a mark magnification by a reproduce magnetic field. CONSTITUTION: An optical magnetic record medium has an information recording layer(18)and a mark magnification reproducing layer(3) on a substrate. The mark magnification reproducing layer(3) magnifies and reproduces a mark copied at the information record layer by an apply of an external magnetic field of the same polarity as a magnetization of the magnet-ball. A thickness of the information record layer has a thickness satisfying h/d > 0.5, wherein h is the thickness of the information record layer, and d is a length of a minimum mark recorded at the information record layer.
摘要翻译：目的：提供光磁记录介质，以便通过再现磁场容易地控制标记倍率。构成：光磁记录介质在基板上具有信息记录层（18）和标记倍率再现层（3）。标记倍率再现层（3）通过施加与磁珠的磁化强度相同极性的外部磁场来放大并再现在信息记录层上复制的标记。信息记录层的厚度具有满足h / d> 0.5的厚度，其中h是信息记录层的厚度，d是记录在信息记录层的最小标记的长度。

3. 发明公开

KR1020000022390A 광자기기록매체, 그 재생방법 및 재생장치 无效
标题翻译： MGNETO光学记录介质，其再现方法和再现器
公开(公告)号：KR1020000022390A
公开(公告)日：2000-04-25
申请号：KR1019980710821
申请日：1997-07-11
申请人： 산요덴키가부시키가이샤 , 히다치 마쿠세루가부시키가이샤
发明人： 오누키사토루 , 요시히로마사후미 , 나가이노부유키 , 시마자키가츠스케 , 아와노히로유키 , 시라이히로시 , 오타노리오 , 스미사토시 , 야마구치아츠시
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： PURPOSE: A magneto-optical recording medium and a signal reproducing method and reproducing apparatus in which a reproduction signal with satisfactory C/N can be obtained even when minute magnetic domains are recorded are provided CONSTITUTION: In this magneto-optical recording medium, the critical temperatures of the first and second auxiliary magnetic layers are set such that the critical temperature in the first auxiliary magnetic layer 5 is less than the critical temperature in the second auxiliary magnetic layer 4. Consequently, magnetic domain 23 which is transferred into second auxiliary magnetic layer 4 is magnified, compared with the size of magnetic domain 21, because of the exchange coupling force from the transfer magnetic domain of first auxiliary magnetic layer5 and the perpendicular magnetic anisotropy of the second auxiliary magnetic layer. Therefore, the reproduction signal detected by means of the magneto-optical effect is amplified as same size as recording magnetic domain 22 in order to make possible reproduction with high C/N. For the case of the transition, the magnetic must be twisted through 90 degree, the thickness of the first auxiliary magnetic layer is greater than the thickness of the magnetic wall of first auxiliary magnetic layer5.
摘要翻译：目的：提供即使在记录微小磁畴的情况下也能获得令人满意的C / N的再现信号的磁光记录介质和信号再现方法和再现装置。构成：在该磁光记录介质中，临界第一和第二辅助磁性层的温度被设定为使得第一辅助磁性层5中的临界温度小于第二辅助磁性层4中的临界温度。因此，转移到第二辅助磁性层中的磁畴23 由于来自第一辅助磁性层5的转移磁畴的交换耦合力和第二辅助磁性层的垂直磁各向异性，与放大了磁畴21的尺寸相比较。因此，通过磁光效应检测到的再现信号被放大为与记录磁畴22相同的大小，以便能够以高C / N再现。对于过渡的情况，磁性必须扭转90度，第一辅助磁性层的厚度大于第一辅助磁性层5的磁壁的厚度。

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