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1. 发明授权

US07808736B2 Servo signal recording apparatus, servo signal recording method, and magnetic tape 有权
标题翻译：伺服信号记录装置，伺服信号记录方法和磁带
公开(公告)号：US07808736B2
公开(公告)日：2010-10-05
申请号：US12019344
申请日：2008-01-24
申请人： Kenji Tanaka , Kenichiro Yoshida , Masao Fujita , Sadamu Kuse
发明人： Kenji Tanaka , Kenichiro Yoshida , Masao Fujita , Sadamu Kuse
IPC分类号： G11B5/09 , G11B21/02 , G11B5/03
CPC分类号： G11B5/584 , G11B5/024
摘要： A servo signal recording apparatus and servo-signal recording method for recording a servo signal on a magnetic tape that includes a magnetic layer having a data area capable of storing data and a servo area capable of storing a servo signal, the apparatus including a transportation unit for transporting the magnetic tape; a direct current (DC) erasing unit on a downstream side in a magnetic tape transportation direction that performs DC erasure to a surface layer portion of the magnetic layer by magnetization in a longitudinal direction of the magnetic tape; and a servo signal recording unit on a downstream side of the DC erasing unit in the magnetic tape transportation direction, that rubs against the magnetic layer of the magnetic tape, and records a servo signal in the servo area by magnetization in a direction opposite to a direction of the magnetization of the DC erasing unit.
摘要翻译：一种用于在包括具有能够存储数据的数据区的磁性层和能够存储伺服信号的伺服区的磁带上记录伺服信号的伺服信号记录装置和伺服信号记录方法，所述装置包括传送单元用于运送磁带; 在磁带传送方向下游侧的直流（DC）擦除单元，其通过磁带的长度方向的磁化对磁性层的表层部进行直流擦除; 以及伺服信号记录单元，其在磁带传送方向上的直流擦除单元的下游侧，摩擦磁带的磁性层，并且通过磁化沿与磁带的相反方向的磁化将伺服信号记录在伺服区域中直流擦除单元的磁化方向。

2. 发明授权

US07961423B2 Information recording apparatus 有权
标题翻译：信息记录装置
公开(公告)号：US07961423B2
公开(公告)日：2011-06-14
申请号：US12479120
申请日：2009-06-05
申请人： Kenji Tanaka , Kenichiro Yoshida , Sadamu Kuse
发明人： Kenji Tanaka , Kenichiro Yoshida , Sadamu Kuse
IPC分类号： G11B5/584
CPC分类号： G11B5/584
摘要： The information recording apparatus of the present invention includes N servo heads. Servo signals outputted respectively from the servo heads are delayed by a delay circuit such that the peaks of the waveforms of the servo signals coincide with each other. The delayed servo signals are added up by an adder. Thus, the output level of the servo signal can be increased by N times and the S/N ratio of the servo signal can be also increased by √N times. As a result, the precision of PES improves and the amount of off-track can be reduced. Therefore, even if a magnetic layer in magnetic tape has a small thickness, it is possible to prevent the decline of the output level of the servo signal and the S/N ratio.
摘要翻译：本发明的信息记录装置包括N个伺服磁头。分别从伺服磁头输出的伺服信号由延迟电路延迟使得伺服信号的波形的峰值相互重合。延迟的伺服信号由加法器相加。因此，伺服信号的输出电平可以增加N次，并且伺服信号的S / N比也可以增加√N倍。结果，PES的精度提高，离轨量可以减少。因此，即使磁带中的磁性层具有小的厚度，也可以防止伺服信号的输出电平和S / N比的下降。

3. 发明申请

US20090310251A1 INFORMATION RECORDING APPARATUS 有权
标题翻译：信息记录装置
公开(公告)号：US20090310251A1
公开(公告)日：2009-12-17
申请号：US12479120
申请日：2009-06-05
申请人： Kenji TANAKA , Kenichiro Yoshida , Sadamu Kuse
发明人： Kenji TANAKA , Kenichiro Yoshida , Sadamu Kuse
IPC分类号： G11B5/584
CPC分类号： G11B5/584
摘要： The information recording apparatus of the present invention includes N servo heads. Servo signals outputted respectively from the servo heads are delayed by a delay circuit such that the peaks of the waveforms of the servo signals coincide with each other. The delayed servo signals are added up by an adder. Thus, the output level of the servo signal can be increased by N times and the S/N ratio of the servo signal can be also increased by √N times. As a result, the precision of PES improves and the amount of off-track can be reduced. Therefore, even if a magnetic layer in magnetic tape has a small thickness, it is possible to prevent the decline of the output level of the servo signal and the S/N ratio.
摘要翻译：本发明的信息记录装置包括N个伺服磁头。分别从伺服磁头输出的伺服信号由延迟电路延迟使得伺服信号的波形的峰值相互重合。延迟的伺服信号由加法器相加。因此，伺服信号的输出电平可以增加N次，并且伺服信号的S / N比也可以增加√N倍。结果，PES的精度提高，离轨量可以减少。因此，即使磁带中的磁性层具有小的厚度，也可以防止伺服信号的输出电平和S / N比的下降。

4. 发明授权

US07969680B2 Magnetic tape on which a servo pattern is formed 有权
标题翻译：形成有伺服图案的磁带
公开(公告)号：US07969680B2
公开(公告)日：2011-06-28
申请号：US12193981
申请日：2008-08-19
申请人： Kenji Tanaka , Sadamu Kuse , Kenichiro Yoshida
发明人： Kenji Tanaka , Sadamu Kuse , Kenichiro Yoshida
IPC分类号： G11B5/09
CPC分类号： G11B5/584
摘要： A magnetic tape of the present invention includes a plurality of data bands in which a data signal can be recorded and servo pattern portions composed of a burst signal. The servo pattern portions are formed at a predetermined interval in a longitudinal direction of the magnetic tape in a plurality of data bands, and positions of the servo pattern portions formed in the respective data bands in the longitudinal direction of the magnetic tape vary. According to such a configuration, a magnetic tape can be provided, which is traced stably by the magnetic head even if the magnetic tape is deformed due to temperature and humidity.
摘要翻译：本发明的磁带包括可以记录数据信号的多个数据带和由突发信号组成的伺服图案部分。伺服图案部分以多个数据带在磁带的纵向方向上以预定的间隔形成，并且形成在磁带的纵向方向上的各个数据带中的伺服图案部分的位置变化。根据这样的结构，即使磁带由于温度和湿度而变形，也可以设置磁头来稳定地追踪磁头。

5. 发明申请

US20090109566A1 MAGNETIC TAPE 有权
标题翻译：磁带
公开(公告)号：US20090109566A1
公开(公告)日：2009-04-30
申请号：US12193981
申请日：2008-08-19
申请人： Kenji Tanaka , Sadamu Kuse , Kenichiro Yoshida
发明人： Kenji Tanaka , Sadamu Kuse , Kenichiro Yoshida
IPC分类号： G11B5/584
CPC分类号： G11B5/584
摘要： A magnetic tape of the present invention includes a plurality of data bands in which a data signal can be recorded and servo pattern portions composed of a burst signal. The servo pattern portions are formed at a predetermined interval in a longitudinal direction of the magnetic tape in a plurality of data bands, and positions of the servo pattern portions formed in the respective data bands in the longitudinal direction of the magnetic tape vary. According to such a configuration, a magnetic tape can be provided, which is traced stably by the magnetic head even if the magnetic tape is deformed due to temperature and humidity.
摘要翻译：本发明的磁带包括可以记录数据信号的多个数据带和由突发信号组成的伺服图案部分。伺服图案部分以多个数据带在磁带的纵向方向上以预定的间隔形成，并且形成在磁带的纵向方向上的各个数据带中的伺服图案部分的位置变化。根据这样的结构，即使磁带由于温度和湿度而变形，也可以设置磁头来稳定地追踪磁头。

6. 发明申请

US20080285171A1 SERVO SIGNAL RECORDING APPARATUS, SERVO SIGNAL RECORDING METHOD, AND MAGNETIC TAPE 有权
标题翻译：伺服信号记录装置，伺服信号记录方法和磁带
公开(公告)号：US20080285171A1
公开(公告)日：2008-11-20
申请号：US12019344
申请日：2008-01-24
申请人： Kenji TANAKA , Kenichiro Yoshida , Masao Fujita , Sadamu Kuse
发明人： Kenji TANAKA , Kenichiro Yoshida , Masao Fujita , Sadamu Kuse
IPC分类号： G11B5/584
CPC分类号： G11B5/584 , G11B5/024
摘要： A servo signal recording apparatus and servo-signal recording method for recording a servo signal on a magnetic tape that includes a magnetic layer having a data area capable of storing data and a servo area capable of storing a servo signal, the apparatus including a transportation unit for transporting the magnetic tape; a DC erasing unit on a downstream side in a magnetic tape transportation direction that performs DC erasure to a surface layer portion of the magnetic layer by magnetization in a longitudinal direction of the magnetic tape; and a servo signal recording unit on a downstream side of the DC erasing unit in the magnetic tape transportation direction, that rubs against the magnetic layer of the magnetic tape, and records a servo signal in the servo area by magnetization in a direction opposite to a direction of the magnetization of the DC erasing unit.
摘要翻译：一种用于在包括具有能够存储数据的数据区的磁性层和能够存储伺服信号的伺服区的磁带上记录伺服信号的伺服信号记录装置和伺服信号记录方法，所述装置包括传送单元用于运送磁带; 在磁带传送方向下游侧的直流擦除单元，通过磁带的长度方向的磁化对磁性层的表层部进行直流擦除; 以及伺服信号记录单元，其在磁带传送方向上的直流擦除单元的下游侧，摩擦磁带的磁性层，并且通过磁化沿与磁带的相反方向的磁化将伺服信号记录在伺服区域中直流擦除单元的磁化方向。

7. 发明授权

US08081559B2 Recording and reproducing apparatus and recording medium 失效
标题翻译：记录和再现设备和记录介质
公开(公告)号：US08081559B2
公开(公告)日：2011-12-20
申请号：US11960439
申请日：2007-12-19
申请人： Masao Fujita , Kenji Tanaka , Shinji Kawakami , Sadamu Kuse
发明人： Masao Fujita , Kenji Tanaka , Shinji Kawakami , Sadamu Kuse
IPC分类号： G11B7/00
CPC分类号： G11B5/584 , G11B5/59677
摘要： The present invention provides a recording and reproducing apparatus that can perform high-precision tracking servo control by removing noise from detected servo signals. The recording and reproducing apparatus performs tracking servo control while reading servo signals 10 that are formed on a surface 9 of a recording medium 2 so as to produce optical contrast, the apparatus including a modulated irradiator 20 for irradiating the servo signals 10 with a light beam, the intensity of the light beam being modulated by a modulating wave that is frequency-modulated; a photoelectric converter 30 for converting reflected light from the servo signals 10 into electric signals; and a synchronous demodulator 15 for subjecting the electrical signal to synchronous demodulation using the modulating wave as a reference wave.
摘要翻译：本发明提供了一种通过从检测到的伺服信号中去除噪声来执行高精度跟踪伺服控制的记录和再现装置。记录和重放装置执行跟踪伺服控制，同时读取形成在记录介质2的表面9上的伺服信号10以便产生光学对比度，该装置包括调制辐射器20，用于用光束照射伺服信号10 光束的强度由被调制的调制波调制; 用于将来自伺服信号10的反射光转换为电信号的光电转换器30; 以及用于使用调制波作为参考波对电信号进行同步解调的同步解调器15。

8. 发明授权

US08027115B2 Data recording apparatus for recording a data signal onto a magnetic recording medium and data recording system using the data recording apparatus 有权
标题翻译：用于将数据信号记录到磁记录介质上的数据记录装置和使用数据记录装置的数据记录系统
公开(公告)号：US08027115B2
公开(公告)日：2011-09-27
申请号：US12213055
申请日：2008-06-13
申请人： Masao Fujita , Kenji Tanaka , Sadamu Kuse
发明人： Masao Fujita , Kenji Tanaka , Sadamu Kuse
IPC分类号： G11B5/02 , G11B5/09 , H04N5/77
CPC分类号： G11B27/034 , G06F3/0601 , G06F2003/0698 , G11B2220/95 , H04N5/77 , H04N5/775 , H04N5/782 , H04N9/8042
摘要： A data recording apparatus and a data recording system of the present invention includes buffer memories 2a to 2c that accumulate data in a plurality of channels transferred from an external appliance on a channel basis, a data selector 3 that reads the data accumulated in the buffer memories 2a to 2c, and a data drive 4 that records the data read by the data selector 3 onto a magnetic tape, wherein the data selector 3 selectively reads the data accumulated in the buffer memories 2a to 2c, and outputs the data in an order of recording onto a magnetic tape in the tape drive 4. According to such a configuration, a data recording apparatus that can be realized at low cost and a recording system using the data recording apparatus can be provided.
摘要翻译：本发明的数据记录装置和数据记录系统包括：缓冲存储器2a至2c，其累积从外部设备在信道上传送的多个信道中的数据;数据选择器3，其读取累积在缓冲存储器中的数据以及数据驱动器4，其将由数据选择器3读取的数据记录到磁带上，其中数据选择器3选择性地读取累积在缓冲存储器2a至2c中的数据，并按照记录在磁带驱动器4中的磁带上。根据这种配置，可以提供可以以低成本实现的数据记录装置和使用数据记录装置的记录系统。

9. 发明授权

US09165586B2 Magnetic recording medium 有权
标题翻译：磁记录介质
公开(公告)号：US09165586B2
公开(公告)日：2015-10-20
申请号：US13330219
申请日：2011-12-19
申请人： Shinji Kawakami , Sadamu Kuse , Kenji Tanaka
发明人： Shinji Kawakami , Sadamu Kuse , Kenji Tanaka
IPC分类号： G11B5/706 , G11B5/70 , G11B5/714
CPC分类号： G11B5/714 , G11B5/70 , G11B5/70678
摘要： The magnetic recording medium of the present invention comprises: a non-magnetic substrate; a non-magnetic layer formed on one of principal surfaces of the non-magnetic substrate; and a magnetic layer formed on a principal surface of the non-magnetic layer opposite to the non-magnetic substrate. Mr and t satisfy 0.0020 μT·m≦Mr·t≦0.0150 μT·m, where Mr is the residual magnetic flux density of the magnetic layer, and t is the average thickness of the magnetic layer, L1 satisfies 2 nm≦L1≦6 nm, where L1 is the average thickness of a first mixed layer that is formed on the surface of the magnetic layer opposite to the non-magnetic layer, and L2 satisfies 0.1≦L2/t≦0.45, where L2 is the average thickness of a second mixed layer that is formed on the surface of the magnetic layer facing the non-magnetic layer.
摘要翻译：本发明的磁记录介质包括：非磁性基片; 形成在非磁性基板的一个主表面上的非磁性层; 以及形成在与非磁性基板相对的非磁性层的主表面上的磁性层。 Mr和t满足0.0020μT·m＆nlE; Mr·t＆nlE; 0.0150μT·m，其中Mr是磁性层的剩余磁通密度，t是磁性层的平均厚度，L1满足2nm＆nlE; L1＆nlE; 6 nm，其中L1是形成在与非磁性层相反的磁性层的表面上的第一混合层的平均厚度，并且L2满足0.1＆lt; lE; L2 / t＆nlE; 0.45，其中L2是形成在面向非磁性层的磁性层的表面上的第二混合层。

10. 发明申请

US20080225432A1 MAGNETIC TAPE APPARATUS 有权
标题翻译：磁带贴装
公开(公告)号：US20080225432A1
公开(公告)日：2008-09-18
申请号：US12045820
申请日：2008-03-11
申请人： Kenji TANAKA , Sadamu Kuse
发明人： Kenji TANAKA , Sadamu Kuse
IPC分类号： G11B15/00 , G11B5/008
CPC分类号： G11B5/00826 , G11B5/4893 , G11B5/584 , G11B15/60
摘要： In a magnetic tape apparatus of the present invention, a magnetic head unit having magnetic elements capable of recording or reproducing information with respect to a magnetic tape includes a movable member that includes a magnetic element and has such a size that the movable member comes into contact with the magnetic tape over an entire region in a width direction, and is placed so as to move in the width direction of the magnetic tape, and a stationary member that is placed at a position adjacent to the movable member in a magnetic tape transport direction, wherein the movable member is moved in the width direction of the magnetic tape by a tracking servo mechanism during a tracking servo control. According to this configuration, a magnetic tape apparatus excellent in a tracking precision can be provided, in which even a magnetic tape with a high friction coefficient does not move following the movement of a magnetic head unit in the width direction.
摘要翻译：在本发明的磁带装置中，具有能够记录或再现关于磁带的信息的磁性元件的磁头单元包括可移动部件，其包括磁性元件，并且具有可移动部件接触的尺寸使磁带在宽度方向上的整个区域上，并且被放置成沿着磁带的宽度方向移动;以及静止部件，其被配置在磁带传送方向上与可动部件相邻的位置其特征在于，在跟踪伺服控制期间，所述可动部件通过跟踪伺服机构在所述磁带的宽度方向上移动。根据该结构，可以提供一种跟踪精度优异的磁带装置，其中即使在磁头单元沿宽度方向的移动之后，具有高摩擦系数的磁带也不会移动。

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