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公开(公告)号：EP4307300A1
公开(公告)日：2024-01-17
申请号：EP22766887.8
申请日：2022-02-28
发明人： YAMAGA, Minoru
摘要： A servo pattern recording method includes: determining a first servo band group that includes three or more servo bands for recording a servo pattern in which first servo band identification information having a plurality of bits is to be embedded, and a second servo band group that includes three or more servo bands for recording a servo pattern in which second servo band identification information having a plurality of bits is to be embedded, the second servo band identification information being different from the first servo band identification information; and recording the first and second servo band identification information on the first and second servo band groups, respectively, such that a combination of a first pair and a second pair is not duplicated, the first pair being a pair of servo band identification information and a phase in one servo band read by a first servo read head, the second pair being a pair of servo band identification information and a phase in the other servo band read by a second servo read head.
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公开(公告)号：EP2709107B1
公开(公告)日：2021-03-31
申请号：EP13175952.4
申请日：2013-07-10
发明人： Xiao, Jun , Haratsch, Eric F. , Zhang, Fan
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公开(公告)号：EP2833357B1
公开(公告)日：2019-08-14
申请号：EP13768393.4
申请日：2013-03-27
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公开(公告)号：EP3438981A1
公开(公告)日：2019-02-06
申请号：EP17774145.1
申请日：2017-03-08
发明人： HIGASHI, Katsuhisa , SHIMIZU, Yohei
摘要： This magnetic head, which reads and writes magnetic information, prevents a signal from being read between the magnetic head and the write circuit during reading of magnetic information. A card reader 1 is provided with a magnetic head 6 which reads and writes magnetic information. Bidirectional diodes 54A, 54B are arranged inside of a head case 21 of the magnetic head 6. A write signal from a write circuit 72 is inputted via the bidirectional diodes 54A, 54B to a writing coil 34 wound around a core 32 of the magnetic head 6. The bidirectional diodes 54A, 54B and a demodulation IC 61 are mounted on a first board surface 62A of a control circuit board 62, and the control circuit board 62 is fixed to the head case 21 so that the bidirectional diodes 54A, 54B and the demodulation IC 61 are covered by the head case 21.
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公开(公告)号：EP3200117A4
公开(公告)日：2018-05-02
申请号：EP15843506
申请日：2015-08-21
申请人： NIDEC SANKYO CORP
CPC分类号： G06K7/087 , G06K7/08 , G06K19/042 , G06K19/06196 , G11B5/02 , G11B5/09
摘要： Provided is a card reader with which the illegitimate acquisition of magnetic information by a criminal can be prevented even when it is possible to determine whether magnetic data has been recorded on the magnetic stripe on a card that has been inserted from a card insertion port, and with which the cost can be reduced. This card reader is equipped with a magnetic sensor (8) for detecting whether magnetic data has been recorded on the magnetic stripe of a card, and a control unit (14) that supplies power to the magnetic sensor (8) and receives an input of an output signal from the magnetic sensor (8). The magnetic sensor (8) outputs an output signal when power is supplied from the control unit (14). When the card transit time is defined as the time from when a recording region for magnetic data recorded on the magnetic stripe on a card inserted into the card insertion port begins to pass by the magnetic sensor (8) until the time when the recording region finishes passing by, the control unit (14) supplies power to the magnetic sensor (8) for a first supply time that is shorter than the card transit time.
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公开(公告)号：EP2693432B1
公开(公告)日：2018-03-07
申请号：EP12764573.7
申请日：2012-03-28
CPC分类号： G06K7/082 , G06K7/084 , G11B5/00808 , G11B5/09 , G11B20/10037
摘要： The present application provides a magnetic head device that can suppress output fluctuation even though the output changes in part of an output waveform from the magnetic head. Concretely to describe, the magnetic head device includes a magnetic head 1 for reproducing information recorded in a magnetic information recording medium; an amplifier section 2 for amplifying a reproduced signal that the magnetic head 1 has reproduced, by using a gain; an A/D converter section 3 for converting the reproduced signal that has been amplified, to a digital signal, by way of sampling the signal at predetermined intervals, in order to output the converted digital signal; a signal comparator section 4a for comparing a digital signal output value with a predetermined output criterion value; and a gain control section 4b for adjusting the gain in such a way as to make the output value closer to the output criterion value, in the case where the output value is either greater or smaller than the output criterion value.
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公开(公告)号：EP3201919A1
公开(公告)日：2017-08-09
申请号：EP15846911.4
申请日：2015-10-02
发明人： TAN, Chye Chin , XI, Weiya , JIN, Chao , CHING, Zhi Yong
CPC分类号： G11B5/5578 , G11B5/012 , G11B5/4813
摘要： Described are systems and methods for implementation in relation to hard disk drives. The disclosure is direct, at least in part, to a method for writing data in a multiple actuator multiple disk system, and the multiple actuator disk system for performing that method. The method comprises receiving the data and dividing the data into at least a first predetermined portion and a second predetermined portion. The method also includes and writing the first predetermined portion of the data onto a first disk surface of the multiple actuator multiple disk system using a first actuator of the multiple actuators while writing the second predetermined portion of the data onto a second disk surface of the multiple actuator multiple disk system using a second actuator of the multiple actuators.
摘要翻译： 描述了与硬盘驱动器相关的系统和方法。 本发明至少部分地直接涉及用于在多致动器多盘系统中写入数据的方法以及用于执行该方法的多致动器盘系统。 该方法包括接收数据并将数据分成至少第一预定部分和第二预定部分。 该方法还包括使用多个致动器中的第一致动器将数据的第一预定部分写入多致动器多盘系统的第一盘表面上，同时将数据的第二预定部分写入多重致动器的第二盘表面上 使用所述多个致动器中的第二致动器的致动器多盘系统。
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10.发明公开MAGNETIC FIELD GENERATION DEVICE, METHOD FOR CONTROLLING MAGNETIC FIELD GENERATION DEVICE, AND MAGNETIC RECORDING MEDIUM PROCESSING DEVICE 审中-公开磁场产生装置，方法控制记录介质中的磁磁场发生装置和处理装置
公开(公告)号：EP3166108A1
公开(公告)日：2017-05-10
申请号：EP15815109.2
申请日：2015-06-23
摘要： Provided are a magnetic field generator, a control method for magnetic field generator, and a magnetic recording medium processing device, with which an interfering magnetic field can be generated continuously and efficiently. Specifically, the magnetic field generator has: a magnetic field generation part 51 comprising a resonance part in which a coil (inductor) L51 and a capacitor C51 are connected with each other and which is structured so that an AC current is flowed between the inductor and the capacitor by charging electric charge to the capacitor and discharging the electric charge to generate a magnetic field by a resonance; a current direction monitoring section which monitors a direction of a current flowing through the inductor of the magnetic field generation part 51; and a judging section 523 which controls a timing for charging in the magnetic field generation part depending on the direction of the current flowing through the inductor which is obtained by monitoring of the current direction monitoring section.
摘要翻译： 本发明提供一种磁场发生器，用于磁场发生器的控制方法，和磁记录介质处理装置中，与以干扰磁场可连续地和有效地产生。 具体地说，磁场发生器具有：磁场产生部51包括其中的线圈（电感器）L51和电容器C51与海誓山盟连接的谐振部分和所有其被构造成在交流电流做在电感器和之间流过 电容器由电荷充电到电容器放电的电荷以产生由谐振磁场; 的电流方向监视部，其监视流过所述磁场产生部分51的电感器的电流的方向; 以及判定部523，其控制用于在磁场产生部分根据由所述电流方向监视部监视获得流过电感器的所有电流的方向进行充电的定时。
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