公开(公告)号：US06859339B2

公开(公告)日：2005-02-22

申请号：US10355860

申请日：2003-01-30

申请人： Yasuaki Ban ,  Keizo Miyata ,  Taizou Hamada ,  Kouji Taniguchi ,  Masaya Sakaguchi

发明人： Yasuaki Ban ,  Keizo Miyata ,  Taizou Hamada ,  Kouji Taniguchi ,  Masaya Sakaguchi

IPC分类号： G11B5/86

CPC分类号： B82Y10/00 ,  G11B5/743 ,  G11B5/865

摘要： The master information recording apparatus 100 includes a master information carrier, a master information carrier facing member, and a magnetic field applying member. A ferromagnetic thin film pattern formed on the surface of the master information carrier includes not less than two kinds of different patterns each having a different pattern angle showing an angle with respect to the direction of the relative movement between a magnetic head and a rotating magnetic recording medium. The magnetic field applying unit applies a magnetic field along the direction, which is perpendicular to the direction shown by an angle that is smaller than the pattern angle of the maximum pattern and larger than the minimum pattern angle of the pattern among the not less than two kinds of patterns.

摘要翻译： 主信息记录装置100包括主信息载体，主信息载体面对构件和磁场施加构件。 形成在主信息载体的表面上的铁磁薄膜图案包括不同于两种不同的图案，每种图案具有不同的图案角度，该图案角度相对于磁头和旋转磁记录之间的相对移动方向呈角度 中。 磁场施加单元沿着垂直于小于最大图案的图案角度的角度的方向施加磁场，并且大于图案的最小图案角度之中的不少于两个的磁场 各种图案

公开(公告)号：US07061703B2

公开(公告)日：2006-06-13

申请号：US10686145

申请日：2003-10-14

申请人： Tatsuaki Ishida ,  Keizo Miyata ,  Nobuyuki Komura ,  Yasuaki Ban ,  Taizou Hamada ,  Hideyuki Hashi

发明人： Tatsuaki Ishida ,  Keizo Miyata ,  Nobuyuki Komura ,  Yasuaki Ban ,  Taizou Hamada ,  Hideyuki Hashi

IPC分类号： G11B5/86

CPC分类号： B82Y10/00 ,  G11B5/59633 ,  G11B5/743 ,  G11B5/82 ,  G11B5/865

摘要： A master information carrier capable of manufacturing a magnetic recording medium in which a preformat recording of information signals causing no reproduction signal detection errors arising from a pulse shift of a reproduction waveform is performed. A master information carrier 1 has an array of ferromagnetic thin films 3 arranged according to the pattern of information signals and is used for forming magnetization 4 of a pattern corresponding to the array pattern of the ferromagnetic thin film 3 in a magnetic recording medium by applying a magnetic field while opposing the master information carrier 1 against a magnetic recording medium 2. Each of the ferromagnetic thin films 3 is formed such that each pattern length A becomes equal to a length including a correction amount α in addition to a length a between magnetic transition areas 6 of the magnetization 4 to be formed in the magnetic recording medium 2.

公开(公告)号：US06858329B2

公开(公告)日：2005-02-22

申请号：US09980183

申请日：2001-03-29

申请人： Taizou Hamada ,  Hideyuki Hashi ,  Tatsuaki Ishida ,  Nobuyuki Komura ,  Yasuaki Ban ,  Keizo Miyata ,  Kiyokazu Tohma

发明人： Taizou Hamada ,  Hideyuki Hashi ,  Tatsuaki Ishida ,  Nobuyuki Komura ,  Yasuaki Ban ,  Keizo Miyata ,  Kiyokazu Tohma

IPC分类号： G11B5/596 ,  G11B5/82 ,  G11B5/86 ,  G11B23/50 ,  G11B5/66

CPC分类号： B82Y10/00 ,  G11B5/59633 ,  G11B5/743 ,  G11B5/82 ,  G11B5/865 ,  G11B23/505

摘要： A master disc capable of conducting a preformat recording by a magnetic transcription without causing any unevenness over an entire magnetic disc is provided. The master disc is provided with a radial land portion where an array of ferromagnetic thin films is formed and a concave portion against the land portion. The land portion and the concave portion are formed such that the land portion is joined with the surface of the magnetic disc when the present magnetic disc is overlapped on the magnetic disc, and that the concave portion is not contacted with the surface of the magnetic disc, and also that a space surrounded by the surface of the magnetic disc and the concave portion is open to air at a peripheral end portion of the magnetic disc.

摘要翻译： 提供能够通过磁转录进行预格式化记录而不在整个磁盘上造成任何不均匀的母盘。 主盘设置有形成铁磁性薄膜阵列的径向接地部分和抵靠陆部的凹部。 当磁盘重叠在磁盘上时，陆部和凹部形成为使得陆部与磁盘的表面接合，并且凹部不与磁盘的表面接触 并且由磁盘的表面和凹部包围的空间在磁盘的周边端部对空气开放。

公开(公告)号：US06646820B1

公开(公告)日：2003-11-11

申请号：US09869947

申请日：2001-07-03

申请人： Tatsuaki Ishida ,  Taizou Hamada ,  Hideyuki Hashi ,  Keizo Miyata ,  Yasuaki Ban ,  Hiromi Kita

发明人： Tatsuaki Ishida ,  Taizou Hamada ,  Hideyuki Hashi ,  Keizo Miyata ,  Yasuaki Ban ,  Hiromi Kita

IPC分类号： G11B586

CPC分类号： G11B5/865 ,  G11B5/127 ,  G11B5/23 ,  G11B5/82

摘要： A master information carrier (2) with an arranged pattern formed of a ferromagnetic film in a shape corresponding to information signals is superposed on a magnetic recording medium (1) and the arranged pattern formed of a ferromagnetic film is magnetized with a magnetizing head (6), thus transfer-recording the arranged pattern into the magnetic recording medium as a magnetized pattern. The magnetizing head includes an annular magnetic circuit with a gap, and a strength of a magnetic field applied to the master information carrier by magnetic flux leaking from portions other than the gap is set to be 20% or less of that of a magnetic field applied to the master information carrier by magnetic flux leaking from the gap. Quality deterioration due to various conditions during recording can be prevented and uniform recording with less variation depending on position on the magnetic recording medium is achieved.

摘要翻译： 具有与信息信号相对应的铁磁膜形成的排列图案的主信息载体（2）叠加在磁记录介质（1）上，由铁磁膜形成的排列图案被磁化头（6 ），从而将布置的图案作为磁化图案转印记录到磁记录介质中。 磁化头包括具有间隙的环形磁路，并且通过从除了间隙之外的部分泄漏的磁通量施加到主信息载体的磁场强度设定为施加的磁场的磁场强度的20％以下 通过磁通从主信息载体泄漏出来。 可以防止由记录期间的各种条件导致的质量劣化，并且实现根据磁记录介质上的位置具有较小变化的均匀记录。

公开(公告)号：US07057834B2

公开(公告)日：2006-06-06

申请号：US09979872

申请日：2001-03-29

申请人： Tatsuaki Ishida ,  Keizo Miyata ,  Nobuyuki Komura ,  Yasuaki Ban ,  Taizou Hamada ,  Hideyuki Hashi

发明人： Tatsuaki Ishida ,  Keizo Miyata ,  Nobuyuki Komura ,  Yasuaki Ban ,  Taizou Hamada ,  Hideyuki Hashi

IPC分类号： G11B5/86

CPC分类号： B82Y10/00 ,  G11B5/59633 ,  G11B5/743 ,  G11B5/82 ,  G11B5/865

摘要： A master information carrier capable of manufacturing a magnetic recording medium in which a preformat recording of information signals causing no reproduction signal detection errors arising from a pulse shift of a reproduction waveform is performed. A master information carrier 1 has an array of ferromagnetic thin films 3 arranged according to the pattern of information signals and is used for forming magnetization 4 of a pattern corresponding to the array pattern of the ferromagnetic thin film 3 in a magnetic recording medium by applying a magnetic field while opposing the master information carrier 1 against a magnetic recording medium 2. Each of the ferromagnetic thin films 3 is formed such that each pattern length A becomes equal to a length including a correction amount α in addition to a length a between magnetic transition areas 6 of the magnetization 4 to be formed in the magnetic recording medium 2.

摘要翻译： 能够制造磁记录介质的主信息载体，其中执行不再现由再现波形的脉冲移位引起的再现信号检测错误的信息信号的预格式化记录。 主信息载体1具有根据信息信号的图案布置的铁磁薄膜3的阵列，并且用于在磁记录介质中形成与铁磁性薄膜3的阵列图案对应的图案的磁化4， 同时与主信息载体1相对于磁记录介质2相对。 每个铁磁薄膜3被形成为使得除了要在磁记录介质2中形成的磁化4的磁性过渡区域6之间的长度a之外，每个图案长度A也等于包括校正量α的长度。

公开(公告)号：US06785070B2

公开(公告)日：2004-08-31

申请号：US10007416

申请日：2001-12-03

申请人： Kouji Taniguchi ,  Kaoru Matsuoka ,  Taizou Hamada ,  Hideyuki Hashi ,  Yasuaki Ban ,  Tatsuaki Ishida

发明人： Kouji Taniguchi ,  Kaoru Matsuoka ,  Taizou Hamada ,  Hideyuki Hashi ,  Yasuaki Ban ,  Tatsuaki Ishida

IPC分类号： G11B586

CPC分类号： G11B5/865 ,  G11B5/59633 ,  G11B23/505

摘要： A magnetic transcription device for transcribing information signals of a master information carrier in a magnetic recording medium by applying a magnetic field generated by magnetic field generating means to a contact body obtained by contacting the master information carrier having a base on which ferromagnetic bodies corresponding to the information signals are formed with a magnetic recording medium having a ferromagnetic layer, wherein the magnetic recording medium includes driving means for adjusting a distance between the magnetic field generating means and the contact body while rotating the magnetic field generating means relative to the contact body. Accordingly, an external magnetic field can be applied and removed for transcription of the information signals of the master information carrier in the magnetic recording medium while rotating the magnetic field generating means relative to the contact body, so that the deterioration of reproduction signals from the magnetic recording medium can be prevented.

摘要翻译： 一种磁转录装置，用于通过将由磁场产生装置产生的磁场施加到磁场产生装置上的磁场来转录主信息载体的信息信号，该接触体通过使具有基底的主信息载体接触而获得， 信息信号由具有铁磁层的磁记录介质形成，其中磁记录介质包括用于在磁场产生装置相对于接触体旋转的同时调节磁场产生装置和接触体之间的距离的驱动装置。 因此，在使磁场产生装置相对于接触体旋转的同时，可以施加和去除外部磁场以转录磁记录介质中的主信息载体的信息信号，从而使来自磁性的再现信号的恶化 可以防止记录介质。

公开(公告)号：US06914735B2

公开(公告)日：2005-07-05

申请号：US10261673

申请日：2002-10-02

申请人： Taizou Hamada ,  Tatsuaki Ishida ,  Yasuaki Ban

发明人： Taizou Hamada ,  Tatsuaki Ishida ,  Yasuaki Ban

IPC分类号： G11B5/86 ,  G11B5/84

CPC分类号： G11B5/865

摘要： In a manufacturing method for a magnetic recording medium, when the length of a ferromagnetic thin film on a master information carrier corresponding to the length between a pair of magnetization transition regions adjacent to each other is A in magnetization information recorded onto a magnetic recording medium, the film thickness of the ferromagnetic thin film is t and A/t is k, k is set from not less than 0.8 to not more than 8.

摘要翻译： 在磁记录介质的制造方法中，当与记录在磁记录介质上的磁化信息中的相互相邻的一对磁化过渡区之间的长度上的主信息载体上的铁磁性薄膜的长度为A时， 铁磁薄膜的膜厚为t，A / t为k，k设定为0.8以上8以下。

公开(公告)号：US06833972B2

公开(公告)日：2004-12-21

申请号：US10277983

申请日：2002-10-23

申请人： Taizou Hamada ,  Yasuaki Ban

发明人： Taizou Hamada ,  Yasuaki Ban

IPC分类号： G11B5596

CPC分类号： B82Y10/00 ,  G11B5/584 ,  G11B5/5965 ,  G11B5/743

摘要： The data row Pw(i) of phase information obtained by reading preformatted phase patterns on an information recording medium by the head consists of the remainders obtained by dividing the data row of the phase information indicating the original track location by 2&pgr;. The data row Pw(i) in a convoluted state is entered; a data row dPw(i) consisting of the differential values between adjacent data in the data row Pw(i) is generated; a two-step differential data row &dgr;Pw(i) consisting of the differential values between adjacent data in the data row dPw(i) is generated; the cumulative coefficient k(i) is adjusted according to the section region where the value of the two-step differential data row &dgr;Pw(i) belongs; a differential data row dPu(i) (=&dgr;Pw(i)+2&pgr;×k(i)) is generated by applying a reconstructing process for solving the convolution process with the use of the found cumulative coefficient k(i); and a reconstructed phase information data row Pu(i) is obtained by further applying integration.

摘要翻译： 通过由头部在信息记录介质上读取预先格式化的相位图案而获得的相位信息的数据行Pw（i）由将表示原始音轨位置的相位信息的数据行除以2pi而得到的剩余部分组成。 进入卷积状态的数据行Pw（i）; 生成由数据行Pw（i）中的相邻数据之间的差分值组成的数据行dPw（i） 产生由数据行dPw（i）中的相邻数据之间的差分值组成的两步​​差分数据行deltaPw（i） 累积系数k（i）根据二阶差分数据行deltaPw（i）的值所属的区域区域进行调整; 通过使用找到的累积系数k（i）应用用于求解卷积处理的重构处理来生成差分数据行dPu（i）（= deltaPw（i）+ 2pixk（i）））。 并且通过进一步应用积分获得重建的相位信息数据行Pu（i）。

公开(公告)号：US06611388B1

公开(公告)日：2003-08-26

申请号：US09646138

申请日：2000-09-13

申请人： Keizo Miyata ,  Tatsuaki Ishida ,  Taizou Hamada ,  Kiyokazu Tohma ,  Hiroshi Ryonai

发明人： Keizo Miyata ,  Tatsuaki Ishida ,  Taizou Hamada ,  Kiyokazu Tohma ,  Hiroshi Ryonai

IPC分类号： G11B586

CPC分类号： G11B5/5526 ,  G11B5/00 ,  G11B5/59633 ,  G11B5/59688 ,  G11B5/82 ,  G11B5/865

摘要： A master-information magnetic recording apparatus for recording preformat information signals into a magnetic recording medium using a ferromagnetic film pattern formed on a master information carrier, in which the pattern corresponds to the preformat information signals. With the master information carrier in contact with the magnetic recording medium, the ferromagnetic film pattern is magnetized by a magnetic field applying device. Thus, the preformat information signals are recorded into the magnetic recording medium. The magnetic field applying device is so constructed that the direction of magnetizing the ferromagnetic film pattern is perpendicular to a track-scanning orbit of a magnetic head in a recording and reproducing apparatus in which the magnetic recording medium is installed. It enables the magnetic head to gain sufficient reproduction amplitude for track-scanning for reproducing the information signals.

摘要翻译： 一种主信息磁记录装置，用于使用形成在主信息载体上的铁磁膜图案将预格式化信息信号记录到磁记录介质中，其中图案对应于预格式化信息信号。 在主信息载体与磁记录介质接触的情况下，铁磁膜图案被磁场施加装置磁化。 因此，预格式化信息信号被记录在磁记录介质中。 磁场施加装置的结构使得铁磁膜图案的磁化方向垂直于安装有磁记录介质的记录和再现装置中的磁头的轨道扫描轨道。 它使磁头能够获得足够的再现幅度，用于轨道扫描以再现信息信号。

公开(公告)号：US07220323B2

公开(公告)日：2007-05-22

申请号：US10362071

申请日：2002-06-19

申请人： Hideyuki Hashi ,  Keizo Miyata ,  Taizou Hamada

发明人： Hideyuki Hashi ,  Keizo Miyata ,  Taizou Hamada

IPC分类号： B08B7/04

CPC分类号： G11B5/865 ,  G11B23/505

摘要： A cleaning method preventing foreign matter attached to a brush from being transferred back to a magnetic transfer carrier by removing foreign matter attached to a cleaning tool such as the brush with a dummy carrier having a recess equivalent to that on a surface of the magnetic transfer carrier.

摘要翻译： 通过除去附着在诸如电刷的清洁工具上的异物，可以防止附着在电刷上的异物转移回磁性转移载体的清洁方法，该虚拟载体具有与磁性转移载体表面相同的凹槽 。