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1. 发明授权

US10424322B2 Magnetic head and magnetic recording medium processing device 有权
公开(公告)号：US10424322B2
公开(公告)日：2019-09-24
申请号：US16089386
申请日：2017-03-08
申请人： NIDEC SANKYO CORPORATION
发明人： Katsuhisa Higashi , Yohei Shimizu
IPC分类号： G11B5/00 , G11B11/10 , G11B5/008 , G06K7/08 , G11B5/09 , G11B5/105 , G11B5/17 , G11B5/31
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.

2. 发明授权

US11379674B2 Magnetic field generation device, magnetic recording medium processing apparatus, and magnetic field generation method 有权
公开(公告)号：US11379674B2
公开(公告)日：2022-07-05
申请号：US17252422
申请日：2019-06-06
申请人： NIDEC SANKYO CORPORATION
发明人： Keiji Miyazawa , Yohei Shimizu , Satoru Aoki
IPC分类号： G06K7/08 , H01F7/06
摘要： A magnetic field generation device may include a coil generating a magnetic field, a drive part configured to apply a voltage to the coil or supply a current to the coil, a monitoring part configured to acquire state information whose value is varied together with temperature of the coil, and a control part which controls the voltage applied by the drive part or the current supplied by the drive part based on the state information acquired by the monitoring part.

3. 发明授权

US10055615B2 Card reader 有权
公开(公告)号：US10055615B2
公开(公告)日：2018-08-21
申请号：US15563091
申请日：2016-03-29
申请人： NIDEC SANKYO CORPORATION
发明人： Kazutoshi Ishikawa , Katsuhisa Higashi , Yukihiko Takita , Yohei Shimizu
IPC分类号： G06K7/08
CPC分类号： G06K7/087 , G06K7/08 , G06K7/10 , G06K19/073
摘要： A card reader may include a card insertion port; a magnetoresistive (MR) sensor; and a disturbing magnetic field generator, wherein the card may include a magnetic stripe, and magnetic data recorded in the magnetic stripe may be arranged in a moving direction of the card inserted through the card insertion port. The MR sensor may include a first resistor and a second resistor separated by a distance which is less than a bit interval of magnetic data, in a case that “0” data are recorded in the magnetic stripe, in the moving direction of the card.

4. 发明授权

US10332548B2 Magnetic recording medium processing device and method of generating interference field 有权
公开(公告)号：US10332548B2
公开(公告)日：2019-06-25
申请号：US16019977
申请日：2018-06-27
申请人： NIDEC SANKYO CORPORATION
发明人： Katsuhisa Higashi , Ikuro Kuribayashi , Keiji Miyazawa , Yohei Shimizu
IPC分类号： G06K7/08 , G11B5/09
摘要： A magnetic recording medium processing device may include a magnetic recording medium insertion slot; a medium pathway connected to the magnetic recording medium insertion slot; a magnetic head arranged to face the medium pathway; and an interference magnetic field generating device structured to generate interference magnetic fields outside the magnetic recording medium insertion slot. The interference magnetic field generating device may include a coil, a capacitor, a first power line, a second power line to which a voltage different from that to the first power line is applied, multiple switches structured to switch the connections between the first power line and the second power line of the coil and the capacitor, and a switch control unit structured to control the multiple switches.

5. 发明授权

US11152017B2 Card reader having chopping drive circuit with cycle shorter than reading gap and control method for card reader 有权
公开(公告)号：US11152017B2
公开(公告)日：2021-10-19
申请号：US16955048
申请日：2018-12-04
申请人： NIDEC SANKYO CORPORATION
发明人： Jo Tanaka , Yohei Shimizu , Yufei Gu
IPC分类号： G11B25/04 , G11B5/008 , G11B5/09 , G11B20/10 , G06K1/12 , G06K7/08 , G11B5/153 , G11B5/17
摘要： A card reader includes a writing coil that is provided to a magnetic head for recording magnetic data in a magnetic card, and a drive circuit that supplies a write current to the writing coil. The drive circuit is a chopping circuit that supplies a chopping current, on/off of which is switched in a specified cycle, as the write current to the writing coil. An on/off cycle of the chopping current is a cycle in which a length of a magnetized pattern in a recording direction is shorter than a reading gap formed in a core around which the writing coil is wound or a core around which a reading coil being separately provided from the writing coil is wound, the magnetized pattern in the recording direction being formed in the magnetic card by the chopping current in a period including one each of the on and the off.

6. 发明授权

US10402597B2 Magnetic field generator, control method for magnetic field generator, and magnetic recording medium processing device 有权
公开(公告)号：US10402597B2
公开(公告)日：2019-09-03
申请号：US15323158
申请日：2015-06-23
申请人： NIDEC SANKYO CORPORATION
发明人： Keiji Hoson , Ikuro Kuribayashi , Tomomi Takeda , Yohei Shimizu
IPC分类号： G06K7/08 , G11B5/09 , G07D9/00
摘要： A magnetic field generator may include a magnetic field generation part including a resonance part including an inductor and a capacitor 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 structured to monitor a direction of a current flowing through the inductor of the magnetic field generation part; and a judging section structured to control 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.

7. 发明授权

US09576161B2 Card reader and control method therefor 有权
标题翻译：读卡器及其控制方法
公开(公告)号：US09576161B2
公开(公告)日：2017-02-21
申请号：US14781413
申请日：2014-07-24
申请人： NIDEC SANKYO CORPORATION
发明人： Jo Tanaka , Shinya Miyazawa , Akihiro Negishi , Yohei Shimizu , Kazuto Saeki
IPC分类号： G06K7/08 , G06K7/00
CPC分类号： G06K7/087 , G06K7/0021 , G06K7/0069 , G06K13/067 , G06K13/0881
摘要： A card reader for use with a card incorporated with an IC chip may include an insertion port into which the card is inserted; a metal detection mechanism structured to detect an external connection terminal of the IC chip provided in the card; and a tip end detection mechanism structured to detect a tip end in an inserting direction of the card inserted into the insertion port. The metal detection mechanism and the tip end detection mechanism may be disposed so that, when the tip end detection mechanism detects the tip end in the inserting direction of the card inserted into the insertion port in a correct posture, the metal detection mechanism detects the external connection terminal.
摘要翻译：与IC芯片结合使用的卡一起使用的读卡器可以包括插入卡的插入口; 金属检测机构，其构造成检测设置在卡中的IC芯片的外部连接端子; 以及尖端检测机构，其构造成检测插入到所述插入口中的卡的插入方向上的前端。金属检测机构和前端检测机构可以设置成当前端检测机构以正确的姿势检测插入插入口的插入方向的插入方向上的前端时，金属检测机构检测外部连接端子

8. 发明授权

US09563791B2 Card reader 有权
标题翻译：读卡器
公开(公告)号：US09563791B2
公开(公告)日：2017-02-07
申请号：US14891135
申请日：2015-01-06
申请人： NIDEC SANKYO CORPORATION
发明人： Yukihiko Takita , Shinya Miyazawa , Jo Tanaka , Yohei Shimizu
IPC分类号： G06K7/08 , G06K13/06
CPC分类号： G06K7/084 , G06K13/06 , G06K13/067
摘要： A card reader for use with a card may include a card insertion part formed with an insertion port into which the card is inserted; and a magnetic head provided in the card insertion part and structured to contact with the card. A magnetic gap in a straight shape may be formed at a tip end of the magnetic head where the card is to be contacted. When a forming direction of the magnetic gap formed in the straight shape is a gap direction, the gap direction may be inclined with respect to a first direction perpendicular to an inserting direction of the card when viewed in a thickness direction of the card inserted into the insertion port.
摘要翻译：与卡一起使用的读卡器可以包括形成有插入卡的插入口的卡片插入部分; 以及设置在卡片插入部分中并构造成与卡片接触的磁头。可以在要接触卡的磁头的尖端处形成直线形状的磁隙。当形成为直线形状的磁隙的形成方向为间隙方向时，间隙方向可以相对于从插入到卡的卡的厚度方向观察时垂直于卡的插入方向的第一方向倾斜插入口

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