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1. 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。

2. 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。

3. 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。

4. 发明授权

US08130463B2 Data recording apparatus and data recording method 有权
标题翻译：数据记录装置和数据记录方法
公开(公告)号：US08130463B2
公开(公告)日：2012-03-06
申请号：US12128156
申请日：2008-05-28
申请人： Masao Fujita , Kenji Tanaka , Sadamu Kuse
发明人： Masao Fujita , Kenji Tanaka , Sadamu Kuse
IPC分类号： G11B21/02
CPC分类号： G11B5/00813 , G11B5/02 , G11B5/022 , G11B2005/0005
摘要： A data recording apparatus of the present invention includes a head that records data signals by magnetizing a magnetic tape 10 and a recording control portion that controls the recording operation by causing recording current to flow to the head. The recording control portion controls the operation of the head, so that in the magnetic tape 10, which is direct current demagnetized continuously in the longitudinal direction, a magnetic field is formed intermittently in an opposite direction to the magnetization direction of the direct current demagnetization. Thus, when recording data signals on the magnetic recording medium, it is possible to make the current flowing to the head small and to realize apparatus power consumption reductions, load reductions for the head and circuitry, and reduction in crosstalk noise from the head chip used for writing to the head chip used for reading.
摘要翻译：本发明的数据记录装置包括通过磁化磁带10记录数据信号的磁头和通过使记录电流流向磁头来控制记录操作的记录控制部分。记录控制部分控制磁头的操作，使得在沿着纵向方向连续地退磁的磁带10中，在与直流退磁的磁化方向相反的方向间歇地形成磁场。因此，当在磁记录介质上记录数据信号时，可以使流过头部的电流变小，并实现设备功耗降低，头部和电路的负载降低，以及减少来自头部芯片的串扰噪声用于写入用于阅读的头部芯片。

5. 发明申请

US20080310044A1 Data recording apparatus and data recording system 有权
标题翻译：数据记录装置和数据记录系统
公开(公告)号：US20080310044A1
公开(公告)日：2008-12-18
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
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。

6. 发明申请

US20080151712A1 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：US20080151712A1
公开(公告)日：2008-06-26
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： G11B5/09
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。

7. 发明授权

US09311946B2 Magnetic recording medium 有权
标题翻译：磁记录介质
公开(公告)号：US09311946B2
公开(公告)日：2016-04-12
申请号：US13211051
申请日：2011-08-16
申请人： Kenji Tanaka , Masao Fujita , Sadamu Kuse
发明人： Kenji Tanaka , Masao Fujita , Sadamu Kuse
IPC分类号： G11B5/71 , G11B5/714 , G11B5/738
CPC分类号： G11B5/71 , G11B5/70615 , G11B5/70626 , G11B5/714 , G11B5/738 , G11B5/78
摘要： A magnetic recording medium of the present invention is a magnetic recording medium including a non-magnetic substrate; a non-magnetic layer that is formed on one of principal surfaces of the non-magnetic substrate and contains a non-magnetic powder, a binder, and a lubricant; and a magnetic layer that is formed on a principal surface of the non-magnetic layer opposite to the non-magnetic substrate and contains a magnetic powder and a binder. The magnetic powder has an average particle size between 10 nm and 35 nm inclusive. The lubricant is migratable to the magnetic layer and forms a lubricant layer on a surface of the magnetic layer when a pressure is applied to the magnetic layer. When spacing of the surface of the magnetic layer before and after washing the lubricant with n-hexane is measured with a TSA (Tape Spacing Analyzer), the value of the spacing after washing is 3 to 10 nm, and the value of the spacing before washing is 1 to 5 nm smaller than the value of the spacing after washing.
摘要翻译：本发明的磁记录介质是包括非磁性基片的磁记录介质; 非磁性层，其形成在所述非磁性基板的一个主表面上并且包含非磁性粉末，粘合剂和润滑剂; 以及形成在与非磁性基板相对的非磁性层的主表面上并且包含磁性粉末和粘合剂的磁性层。磁性粉末的平均粒径为10nm〜35nm。当向磁性层施加压力时，润滑剂可移动到磁性层并在磁性层的表面上形成润滑剂层。当使用TSA（胶带间隔分析仪）测量用正己烷洗涤润滑剂之前和之后的磁性层表面的间隔时，洗涤后的间隔值为3至10nm，并且之前的间隔值洗涤比洗涤后的间隔值小1〜5nm。

8. 发明申请

US20120045664A1 MAGNETIC RECORDING MEDIUM 有权
标题翻译：磁记录介质
公开(公告)号：US20120045664A1
公开(公告)日：2012-02-23
申请号：US13211051
申请日：2011-08-16
申请人： Kenji TANAKA , Masao Fujita , Sadamu Kuse
发明人： Kenji TANAKA , Masao Fujita , Sadamu Kuse
IPC分类号： G11B5/70 , G11B5/714 , G11B5/71
CPC分类号： G11B5/71 , G11B5/70615 , G11B5/70626 , G11B5/714 , G11B5/738 , G11B5/78
摘要： A magnetic recording medium of the present invention is a magnetic recording medium including a non-magnetic substrate; a non-magnetic layer that is formed on one of principal surfaces of the non-magnetic substrate and contains a non-magnetic powder, a binder, and a lubricant; and a magnetic layer that is formed on a principal surface of the non-magnetic layer opposite to the non-magnetic substrate and contains a magnetic powder and a binder. The magnetic powder has an average particle size between 10 inn and 35 nm inclusive. The lubricant is migratable to the magnetic layer and forms a lubricant layer on a surface of the magnetic layer when a pressure is applied to the magnetic layer. When spacing of the surface of the magnetic layer before and after washing the lubricant with n-hexane is measured with a TSA (Tape Spacing Analyzer), the value of the spacing after washing is 3 to 10 nm, and the value of the spacing before washing is 1 to 5 nm smaller than the value of the spacing after washing.
摘要翻译：本发明的磁记录介质是包括非磁性基片的磁记录介质; 非磁性层，其形成在所述非磁性基板的一个主表面上并且包含非磁性粉末，粘合剂和润滑剂; 以及形成在与非磁性基板相对的非磁性层的主表面上并且包含磁性粉末和粘合剂的磁性层。该磁性粉末的平均粒径为10至35纳米（含）。当向磁性层施加压力时，润滑剂可移动到磁性层并在磁性层的表面上形成润滑剂层。当使用TSA（胶带间隔分析仪）测量用正己烷洗涤润滑剂之前和之后的磁性层表面的间隔时，洗涤后的间隔值为3至10nm，并且之前的间隔值洗涤比洗涤后的间隔值小1〜5nm。

9. 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。

10. 发明授权

US08593754B2 Magnetic tape driving apparatus having a head displacing portion 有权
标题翻译：具有磁头位移部分的磁带驱动装置
公开(公告)号：US08593754B2
公开(公告)日：2013-11-26
申请号：US13115163
申请日：2011-05-25
申请人： Masao Fujita , Sadamu Kuse
发明人： Masao Fujita , Sadamu Kuse
IPC分类号： G11B21/02
CPC分类号： G11B5/4893 , G11B5/00813 , G11B5/40
摘要： A magnetic tape driving apparatus, which does not cause damage to either a magnetic head or a magnetic tape when making transition of the magnetic tape from a stopped state to a running state, when making transition of the magnetic tape from a running state to a stopped state, or when reversing the transportation direction of the magnetic tape, is provided. In a state where any one of a magnetic head and a magnetic tape moves and the other rests (i.e., a state where static friction may occur), such as at the time of starting transportation of the magnetic tape, at the time of stopping the tape in a running state, and at the time of reversing the transportation direction of the magnetic tape, a head displacing portion vibrates the magnetic head under the control by a displacement control portion, and thus no static friction occurs between the magnetic head and the magnetic tape. Therefore, the risk of causing damage to the magnetic head (such as an MR head unit equipped with an MR element) or the magnetic tape can be reduced.
摘要翻译：一种磁带驱动装置，当使磁带从运行状态转移到停止状态时，在使磁带从停止状态转移到运行状态时不会对磁头或磁带造成损坏状态，或者当使磁带的运送方向反转时。在磁头和磁带中的任何一个移动的状态下，另一个位置（即，可能发生静摩擦的状态），例如在开始运送磁带时，在停止时胶带处于运行状态，并且在反转磁带的传送方向时，磁头位移部分在位移控制部分的控制下使磁头振动，从而在磁头和磁体之间不产生静摩擦胶带。因此，可以减少对磁头（例如配备有MR元件的MR头单元）或磁带造成损害的风险。

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