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41. 发明授权

US07365933B2 Servo information recording method, magnetic recording media, and magnetic disk apparatus 失效
标题翻译：伺服信息记录方法，磁记录介质和磁盘装置
公开(公告)号：US07365933B2
公开(公告)日：2008-04-29
申请号：US11331921
申请日：2006-01-12
申请人： Takehiko Hamaguchi , Hideaki Maeda , Kazuaki Usui , Kazuhisa Shishida , Takashi Konishi
发明人： Takehiko Hamaguchi , Hideaki Maeda , Kazuaki Usui , Kazuhisa Shishida , Takashi Konishi
IPC分类号： G11B5/596
CPC分类号： G11B5/59655
摘要： Embodiments of the invention provide optimum servo patterns for perpendicular magnetic recording method. In one embodiment, a burst field of servo patterns is composed of burst-signal parts in each of which a constant frequency occurs successively and zero-signal parts each of which has been demagnetized to a state of zero-magnetization, and the total magnetization of the burst field is made approximately 0. The zero signal portions are formed by shutting off a write current at a time during an operation to record servo patterns on a disk initialized to a state of zero-magnetization. The total magnetization of all servo patterns is made approximately 0 by encoding an address mark field and a track code field of servo patterns by a phase shift method.
摘要翻译：本发明的实施例提供了用于垂直磁记录方法的最佳伺服模式。在一个实施例中，伺服模式的脉冲串区域由突发信号部分组成，其中每个脉冲串信号部分连续出现恒定频率，零信号部分已经被去磁到零磁化状态，并且总磁化强度脉冲串区域被制成大约0.零信号部分是通过在操作期间的一个时刻关闭写入电流来形成的，以便在初始化为零磁化的状态的盘上记录伺服模式。通过相移法对伺服模式的地址标记场和轨迹代码域进行编码，使所有伺服模式的总磁化大致为0。

42. 发明授权

US07075743B2 Method of servo writing for magnetic recording system, magnetic recording system 失效
公开(公告)号：US07075743B2
公开(公告)日：2006-07-11
申请号：US09924762
申请日：2001-08-09
申请人： Yasutaka Nishida , Takehiko Hamaguchi , Hideki Sawaguchi , Hisashi Takano
发明人： Yasutaka Nishida , Takehiko Hamaguchi , Hideki Sawaguchi , Hisashi Takano
IPC分类号： G11B5/09
CPC分类号： G11B5/59655 , G11B5/59688
摘要： In a method of servo writing of a magnetic recording system and the magnetic recording system, the signal is recorded in a dummy area with a higher recording density than the burst signal. Also, the maximum bit length of the burst area is shortened as compared with the maximum bit length of the data area. A servo control method for perpendicular recording similar to that for longitudinal recording can be used to reduce the development cost. The anti-signal decay performance is also improved. Further, since the variations of the burst signal along the track width is suppressed, the positioning accuracy is improved. These effects combine to produce a reliable magnetic recording system of large capacity.

43. 发明申请

US20060132957A1 Magnetic disk apparatus having an adjustable mechanism to compensate write or heat element for off-tracking position with yaw angle 失效
公开(公告)号：US20060132957A1
公开(公告)日：2006-06-22
申请号：US11354912
申请日：2006-02-16
申请人： Takehiko Hamaguchi , Atsushi Nakamura , Yasutaka Nishida , Masafumi Mochizuki , Hideki Sawaguchi
发明人： Takehiko Hamaguchi , Atsushi Nakamura , Yasutaka Nishida , Masafumi Mochizuki , Hideki Sawaguchi
IPC分类号： G11B5/02
CPC分类号： G11B5/6005 , G11B5/012 , G11B5/105 , G11B5/127 , G11B5/1272 , G11B5/2654 , G11B5/4886 , G11B5/56 , G11B2005/001 , G11B2005/0021
摘要： A magnetic disk apparatus including: a disk holding data as magnetic information on a magnetic recording film; a head to perform writing and reading of the magnetic information; a rotary actuator to move the head in a radial direction of the disk; plural heat elements in the head to locally heat the disk; a write element in the head to apply a magnetic field to the disk; and means for selecting at least one heat element from the plural heat elements, wherein the means for selecting the heat element selects at least one heat element from the plural heat elements so as to bring a center line of an area heated by the heat element and a center line of the position of the magnetic field generated by the write element into approximate correspondence, in correspondence with a relative angle between the head and a direction of movement of the disk.

44. 发明申请

US20060121317A1 Magnetic recording medium, method of manufacturing the magnetic recording medium and a magnetic disk drive using the magnetic recording medium 审中-公开
标题翻译：磁记录介质，磁记录介质的制造方法和使用该磁记录介质的磁盘驱动器
公开(公告)号：US20060121317A1
公开(公告)日：2006-06-08
申请号：US11288546
申请日：2005-11-28
申请人： Yuichi Kokaku , Mitsuhiro Shoda , Hiroyuki Matsumoto , Mikio Suzuki , Takehiko Hamaguchi , Yuzuru Hosoe
发明人： Yuichi Kokaku , Mitsuhiro Shoda , Hiroyuki Matsumoto , Mikio Suzuki , Takehiko Hamaguchi , Yuzuru Hosoe
IPC分类号： B05D5/12
CPC分类号： G11B20/10009 , G11B5/4555 , G11B5/65 , G11B5/667 , G11B5/8404 , G11B20/1816
摘要： The present invention restricts defect density on the magnetic disk based on predetermined polishing conditions by applying a magnetic field to the entire surface of a magnetic disk in a direction vertical thereto, rotating the magnetic disk, loading a magnetic head to the magnetic disk, reproducing signals from the magnetic disk, processing the reproduced signals by a waveform analyzer, counting pulse waveforms of 0.9 times or more a servo-bit length at ½ threshold value of an average output, and measuring the defect density on the magnetic disk giving an undesired effect on the I/O performance of the magnetic disk drive. In a case of a magnetic recording medium using a vertical magnetic recording system, even with fine defect of magnetic layer, a servo pattern cannot be judged correctly. This provides degradation of the I/O performance of increasing the time necessary for reading out large capacity data, lowering the performance of the entire magnetic disk drive.
摘要翻译：本发明基于预定的抛光条件来限制磁盘上的缺陷密度，通过向垂直于其的方向的磁盘的整个表面施加磁场，旋转磁盘，将磁头加载到磁盘，再现信号通过波形分析器对再生信号进行处理，对平均输出的1/2阈值的伺服位长度的0.9倍以上的脉冲波形进行计数，并测量磁盘上的缺陷密度，给出不期望的影响磁盘驱动器的I / O性能。在使用垂直磁记录系统的磁记录介质的情况下，即使磁性层的细小缺陷，也不能正确判断伺服图案。这提供了I / O性能的劣化，从而增加了读取大容量数据所需的时间，降低了整个磁盘驱动器的性能。

45. 发明申请

US20060119971A1 Thermal assist head slider 失效
公开(公告)号：US20060119971A1
公开(公告)日：2006-06-08
申请号：US11299076
申请日：2005-12-08
申请人： Masayuki Kurita , Takehiko Hamaguchi , Hidekazu Kohira , Mikio Tokuyama
发明人： Masayuki Kurita , Takehiko Hamaguchi , Hidekazu Kohira , Mikio Tokuyama
IPC分类号： G11B17/00
CPC分类号： G11B5/3967 , G11B5/012 , G11B5/127 , G11B5/3103 , G11B5/4886 , G11B5/4923 , G11B5/4969 , G11B2005/0005 , G11B2005/0021
摘要： In a magnetic disk apparatus, mounting of plural heating elements to a magnetic head slider is permitted. Thermally assisted magnetic recording from inner to outer surface is permitted at a small amount of power consumption. In one embodiment, the magnetic disk apparatus has a magnetic disk on which magnetic information is recorded, a magnetic head slider having an air bearing surface for floating from the magnetic disk in proximity thereto, and a rotary actuator moving over the disk arcuately while supporting the magnetic head slider by a suspension. A recording element acting to record magnetic information on the magnetic disk, a playback element acting to play back the magnetic information recorded on the magnetic disk, and plural heating elements acting to locally heat the magnetic disk are carried on the magnetic head slider. A circuit for switching energization to the plural heating elements and according to information about the direction of a DC power supply VH, frequency contained in an AC power supply, or the like is formed.

46. 发明授权

US06822818B2 Magnetic hard disk drive 失效
标题翻译：磁性硬盘驱动器
公开(公告)号：US06822818B2
公开(公告)日：2004-11-23
申请号：US09919915
申请日：2001-08-02
申请人： Takehiko Hamaguchi , Kyo Akagi , Hisashi Takano , Takayuki Ichihara
发明人： Takehiko Hamaguchi , Kyo Akagi , Hisashi Takano , Takayuki Ichihara
IPC分类号： G11B509
CPC分类号： G11B20/1252 , G11B5/012 , G11B5/5582 , G11B5/59611 , G11B5/59655 , G11B5/59694 , G11B20/10 , G11B27/3027 , G11B2020/1232 , G11B2020/1238 , G11B2020/1267 , G11B2020/1287 , G11B2220/20 , G11B2220/2516
摘要： A hard disk drive and magnetic medium including a servo area, a data area divided into a plurality of sector blocks and at least one micro-servo area disposed between two sector blocks. There may be a micro-servo area immediately preceding each of the plurality of sector blocks. The micro-servo areas include an address mark and a track parity check code that allow the detection of an external shock that causes the recording (write) head to skip to an adjacent track in the hard disk medium. The micro-servo area is smaller than the servo areas, and various numbers of different track parity check codes can be used for different resolution of shock detection. An acceleration sensor may also be provided to detect larger external shocks. By detecting various external shocks with improved accuracy, and aborting the recording operation of data if an external shock is detected, the corruption of data in adjacent tracks is substantially reduced to improve disk drive performance.
摘要翻译：一种硬盘驱动器和磁介质，包括伺服区域，分成多个扇区块的数据区域和设置在两个扇区块之间的至少一个微伺服区域。可能存在紧邻在多个扇区块中的每一个之前的微伺服区域。微伺服区域包括地址标记和轨道奇偶校验码，其允许检测导致记录（写入）头跳到硬盘介质中的相邻轨道的外部冲击。微伺服区域小于伺服区域，各种数量的不同轨道奇偶校验码可用于不同的震动检测分辨率。还可以提供加速度传感器来检测更大的外部冲击。通过以更高的精度检测各种外部冲击，并且如果检测到外部冲击则中止数据的记录操作，则相当的磁道中的数据的损坏被大大减少以提高磁盘驱动器的性能。

47. 发明授权

US5786952A Magnetic digital storage method and system wherein magnetic transition points in adjacent recorded tracks are out of phase with each other 失效
标题翻译：磁数字存储方法和系统，其中相邻记录磁道中的磁转变点彼此不同相
公开(公告)号：US5786952A
公开(公告)日：1998-07-28
申请号：US562203
申请日：1995-11-22
申请人： Masuo Umemoto , Yoshihiro Shiroishi , Reijiro Tsuchiya , Kyo Akagi , Takehiko Hamaguchi , Takashi Kawabe , Atsushi Saito , Kouichirou Wakabayashi
发明人： Masuo Umemoto , Yoshihiro Shiroishi , Reijiro Tsuchiya , Kyo Akagi , Takehiko Hamaguchi , Takashi Kawabe , Atsushi Saito , Kouichirou Wakabayashi
IPC分类号： G11B5/012 , G11B5/035 , G11B5/09 , G11B5/48 , G11B5/49 , G11B5/55 , G11B5/596 , G11B20/10
CPC分类号： G11B5/59633 , G11B20/10009 , G11B5/012 , G11B5/09 , G11B5/4886 , G11B5/4976 , G11B5/5526 , G11B5/035
摘要： A magnetic digital storage method and system which can improve a recording density and can reduce a cross-talk upon reproducing. An inputted high-speed digital signal is converted to a plurality of low-speed digital signal sequences by a recording circuit and each of the low-speed signal sequence is recorded onto a plurality of adjacent recorded tracks of a recording medium by integrated parallel recording heads. One servo signal is commonly recorded to the plurality of recorded tracks. Further, when recording the digital signal to the adjacent recorded tracks of the recording medium, a delay of a signal that is applied to each recording head is adjusted such that the phases of magnetic transition points given by the recording signal in the adjacent recorded tracks are not identical in the circumferential direction.
摘要翻译：一种磁数字存储方法和系统，其可以提高记录密度并且可以在再现时减少串扰。输入的高速数字信号通过记录电路转换成多个低速数字信号序列，并且每个低速信号序列通过集成并行记录头记录在记录介质的多个相邻的记录磁道上。一个伺服信号通常记录到多个记录的轨道。此外，当将数字信号记录到记录介质的相邻记录磁道时，调整施加到每个记录头的信号的延迟，使得由相邻记录磁道中的记录信号给出的磁转变点的相位为在圆周方向上不相同。

48. 发明授权

US4959796A Method of producing analytical curve 失效
标题翻译：生产分析曲线的方法
公开(公告)号：US4959796A
公开(公告)日：1990-09-25
申请号：US268928
申请日：1988-11-09
申请人： Seiji Hidaka , Takashi Ishihara , Takehiko Hamaguchi , Nobuaki Sugiyama , Kosuke Toura
发明人： Seiji Hidaka , Takashi Ishihara , Takehiko Hamaguchi , Nobuaki Sugiyama , Kosuke Toura
IPC分类号： G01N21/47 , G01N21/27 , G01N21/78 , G01N35/00
CPC分类号： G01N21/274 , G06F19/3412 , G06F19/366 , G01N35/00029
摘要： A method of producing an analytical curve for an analyzing apparatus which provides an analysis result on the basis of the analytical curve in response to a measurement value obtained by photoelectrically measuring light intensity reflected from a slide to be analyzed. A plurality of reference slides are measured by first analyzing apparatus which has a predetermined analytical curve, thereby obtaining a plurality of first measurement values and providing a plurality of first analysis results. The plurality of reference slides are further measured by second analyzing apparatus, thereby obtaining a plurality of second measurement values. Analytical curve for the second analyzing apparatus for produced on the basis of a relation between the first measurement values and the second measurement values so that a plurality of second analysis results correspond to the plurality of first analysis results.
摘要翻译：一种生成分析装置的分析曲线的方法，该分析装置响应于通过光电测量从待分析的载玻片反射的光强而获得的测量值，基于分析曲线提供分析结果。通过具有预定分析曲线的第一分析装置测量多个参考幻灯片，从而获得多个第一测量值并提供多个第一分析结果。通过第二分析装置进一步测量多个参考幻灯片，从而获得多个第二测量值。基于第一测量值和第二测量值之间的关系产生的第二分析设备的分析曲线，使得多个第二分析结果对应于多个第一分析结果。

49. 发明授权

US4545661A Folding camera with movable member mounting an objective lens and reflex mirror 失效
标题翻译：折叠式摄像机，可移动构件安装物镜和反光镜
公开(公告)号：US4545661A
公开(公告)日：1985-10-08
申请号：US492493
申请日：1983-05-05
申请人： Takehiko Hamaguchi , Kiyoaki Hazama , Kenichi Iwaida , Takeyoshi Iguchi
发明人： Takehiko Hamaguchi , Kiyoaki Hazama , Kenichi Iwaida , Takeyoshi Iguchi
IPC分类号： G03B17/52 , G03B17/04 , G03B19/12
CPC分类号： G03B17/52
摘要： A foldable camera for self-developing film comprises a base housing and a movable member pivotable between a closed position integrated with the housing and an open, elevated position above the housing. The movable member is mounted to a supporting member which is pivotally coupled to the housing at the end opposite from the film exit end of the housing. An objective lens and a reflex mirror are fixedly mounted to the movable member in fixed relationship to each other such that they are in the proper positions for film exposure when the movable member is pivotted to the elevated position.
摘要翻译：用于自显影胶片的可折叠照相机包括基座壳体和可在与壳体一体化的关闭位置和壳体上方开放的升高位置之间枢转的可移动部件。可移动构件安装到支撑构件，支撑构件在与壳体的膜出口端相对的端部枢转地联接到壳体。物镜和反射镜固定地安装在可动件上，彼此固定，使得当可动件枢转到提升位置时，它们处于用于胶片曝光的适当位置。

50. 发明授权

US08049986B2 Control method for magnetic disk device, magnetic disk device, and magnetic disk 有权
标题翻译：磁盘装置，磁盘装置和磁盘的控制方法
公开(公告)号：US08049986B2
公开(公告)日：2011-11-01
申请号：US12543845
申请日：2009-08-19
申请人： Kenya Ito , Takehiko Hamaguchi
发明人： Kenya Ito , Takehiko Hamaguchi
IPC分类号： G11B21/02 , G11B27/36 , G11B5/09
CPC分类号： G11B5/012 , B82Y10/00 , G11B5/1278 , G11B5/743 , G11B5/746 , G11B5/82 , G11B2005/0013
摘要： According to one embodiment, a control method for a magnetic disk device includes writing data by varying a phase of the array period of the plurality of magnetic elements or a phase of the time period of the recording signal in one section of the track from a corresponding phase in another section of the track, reading a reproduction signal from the track, and determining a phase shift between the array period of the plurality of magnetic elements and the time period of the recording signal, based on a reproduction signal read from the one section and a reproduction signal read from the other section. In another embodiment, a magnetic disk includes a track in which magnetic elements are magnetically separated and arranged in an array period, and a phase of the array period in one section is different from a phase in another section of the track.
摘要翻译：根据一个实施例，一种用于磁盘装置的控制方法包括：通过改变多个磁性元件的阵列周期的相位或从轨道的一个部分中的记录信号的时间段的相位来写入数据在轨道的另一部分中相位，从轨道读取再现信号，并且基于从一个部分读取的再现信号，确定多个磁性元件的阵列周期与记录信号的时间段之间的相移以及从另一部分读取的再现信号。在另一个实施例中，磁盘包括其中磁性元件以阵列周期被磁性地分离和布置的轨道，并且一个部分中的阵列周期的相位不同于轨道的另一部分中的相位。

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