Patents by Inventor Yukihiko Takita
Yukihiko Takita has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20190087611Abstract: A magnetic head to detect a change of a magnetic field caused by a passing of a magnetic recording medium may include a head main body including a core provided with a gap and a coil which is wound around the core; a demodulation circuit structured to demodulate an analog signal outputted from the coil; an encryption circuit structured to encrypt a demodulated signal outputted from the demodulation circuit; a head case in which the head main body is accommodated; and a filter circuit which is connected between the coil and the demodulation circuit and is structured to remove noise from the analog signal. An electronic component which structures the filter circuit may be accommodated in the head case.Type: ApplicationFiled: March 8, 2017Publication date: March 21, 2019Inventors: Yukihiko TAKITA, Masaya FUJIMOTO
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Patent number: 10083327Abstract: A card reader may include a magnetic sensor to detect whether magnetic data are recorded in the magnetic stripe of the card; a control section to supply electric power to the magnetic sensor and into which an output signal of the magnetic sensor is inputted; and a card insertion port into which the card is inserted and in which the magnetic sensor is disposed. The magnetic sensor may output an output signal when the electric power is supplied from the control section. The control section may supply the electric power to the magnetic sensor during a first supply time period which is shorter than a card passage time period.Type: GrantFiled: August 21, 2015Date of Patent: September 25, 2018Assignee: NIDEC SANKYO CORPORATIONInventors: Katsuhisa Higashi, Yukihiko Takita, Kazutoshi Ishikawa, Hiroshi Kawate, Tadashi Taguchi
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Patent number: 10055615Abstract: 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.Type: GrantFiled: March 29, 2016Date of Patent: August 21, 2018Assignee: NIDEC SANKYO CORPORATIONInventors: Kazutoshi Ishikawa, Katsuhisa Higashi, Yukihiko Takita, Yohei Shimizu
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Publication number: 20180075263Abstract: 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.Type: ApplicationFiled: March 29, 2016Publication date: March 15, 2018Inventors: Kazutoshi ISHIKAWA, Katsuhisa HIGASHI, Yukihiko TAKITA, Yohei SHIMIZU
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Patent number: 9858449Abstract: An MR sensor structured to detect whether or not magnetic data are recorded in a magnetic stripe of a card having first and second tracks may include a first resistor and a second resistor serially-connected with each other and disposed at positions where the first track is passed; and a third resistor and a fourth resistor serially-connected with each other and disposed at positions where the second track is passed. The second resistor and the fourth resistor may be connected with a power supply, and the first resistor and the third resistor may be ground grounded. A potential difference between a first midpoint between the first resistor and the second resistor and a second midpoint between the third resistor and the fourth resistor may be an output of the MR sensor.Type: GrantFiled: August 20, 2015Date of Patent: January 2, 2018Assignee: NIDEC SANKYO CORPORATIONInventors: Hiroshi Kawate, Tadashi Taguchi, Katsuhisa Higashi, Yukihiko Takita, Kazutoshi Ishikawa
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Publication number: 20170293777Abstract: An MR sensor structured to detect whether or not magnetic data are recorded in a magnetic stripe of a card having first and second tracks may include a first resistor and a second resistor serially-connected with each other and disposed at positions where the first track is passed; and a third resistor and a fourth resistor serially-connected with each other and disposed at positions where the second track is passed. The second resistor and the fourth resistor may be connected with a power supply, and the first resistor and the third resistor may be ground grounded. A potential difference between a first midpoint between the first resistor and the second resistor and a second midpoint between the third resistor and the fourth resistor may be an output of the MR sensor.Type: ApplicationFiled: August 20, 2015Publication date: October 12, 2017Inventors: Hiroshi KAWATE, Tadashi TAGUCHI, Katsuhisa HIGASHI, Yukihiko TAKITA, Kazutoshi ISHIKAWA
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Publication number: 20170286728Abstract: A card reader may include a magnetic sensor to detect whether magnetic data are recorded in the magnetic stripe of the card; a control section to supply electric power to the magnetic sensor and into which an output signal of the magnetic sensor is inputted; and a card insertion port into which the card is inserted and in which the magnetic sensor is disposed. The magnetic sensor may output an output signal when the electric power is supplied from the control section. The control section may supply the electric power to the magnetic sensor during a first supply time period which is shorter than a card passage time period.Type: ApplicationFiled: August 21, 2015Publication date: October 5, 2017Inventors: Katsuhisa HIGASHI, Yukihiko TAKITA, Kazutoshi ISHIKAWA, Hiroshi KAWATE, Tadashi TAGUCHI
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Patent number: 9626820Abstract: A card reader may include a card insertion port; a card passage; and a disturbing magnetic field generator. The disturbing magnetic field generator may include a core part including a core formed and a disturbing magnetic field generation coil wound around the core. The core part may include a first end face and a second end face which are disposed so as to face substantially the front side. The disturbing magnetic field generator may generate a disturbing magnetic field whose flux line changes into a direction from the first end face toward the second end face and a direction from the second end face toward the first end face. The direction of the magnetic flux lines are substantially parallel to the passing direction of the card. In a width and thickness direction of the card, the magnetic flux line crosses a position where the magnetic stripe is passed.Type: GrantFiled: March 5, 2015Date of Patent: April 18, 2017Assignee: NIDEC SANKYO CORPORATIONInventors: Hirotaka Sakamaki, Yukihiko Takita
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Patent number: 9563791Abstract: 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.Type: GrantFiled: January 6, 2015Date of Patent: February 7, 2017Assignee: NIDEC SANKYO CORPORATIONInventors: Yukihiko Takita, Shinya Miyazawa, Jo Tanaka, Yohei Shimizu
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Publication number: 20170018135Abstract: A card reader may include a card insertion port; a card passage; and a disturbing magnetic field generator. The disturbing magnetic field generator may include a core part including a core formed and a disturbing magnetic field generation coil wound around the core. The core part may include a first end face and a second end face which are disposed so as to face substantially the front side. The disturbing magnetic field generator may generate a disturbing magnetic field whose flux line changes into a direction from the first end face toward the second end face and a direction from the second end face toward the first end face. The direction of the magnetic flux lines are substantially parallel to the passing direction of the card. In a width and thickness direction of the card, the magnetic flux line crosses a position where the magnetic stripe is passed.Type: ApplicationFiled: March 5, 2015Publication date: January 19, 2017Inventors: Hirotaka SAKAMAKI, Yukihiko TAKITA
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Publication number: 20160314326Abstract: 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.Type: ApplicationFiled: January 6, 2015Publication date: October 27, 2016Inventors: Yukihiko TAKITA, Shinya MIYAZAWA, Jo TANAKA, Yohei SHIMIZU
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Patent number: 8985450Abstract: Provided is a card insertion unit for a card reader which, without weakening a magnetic field generated by a magnetic field generating device in order to prevent reading of magnetic data by a magnetic head for skimming, is capable of reducing the effect of the magnetic field upon the reading of the magnetic data by way of the magnetic head for data reading. This card insertion unit may be provided with a notch formed at a point at which a magnetic stripe passes at insertion time of the card a projecting portion which projects toward the upstream side of the insertion direction of the card and a magnetic field generating device disposed in the interior of the projecting portion.Type: GrantFiled: May 21, 2012Date of Patent: March 24, 2015Assignee: Nidec Sankyo CorporationInventors: Kazutoshi Ishikawa, Yukihiko Takita, Shinya Miyazawa
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Publication number: 20140332591Abstract: Provided is a card insertion unit for a card reader which, without weakening a magnetic field generated by a magnetic field generating device in order to prevent reading of magnetic data by a magnetic head for skimming, is capable of reducing the effect of the magnetic field upon the reading of the magnetic data by way of the magnetic head for data reading. This card insertion unit (4) is provided with a notch (4c) formed at a point at which a magnetic stripe (2a) passes at insertion time of the card (2), a projecting portion (4b) which projects toward the upstream side of the insertion direction of the card (2), and a magnetic field generating device (14) disposed in the interior of the projecting portion (4b).Type: ApplicationFiled: May 21, 2012Publication date: November 13, 2014Applicant: NIDEC SANKYO CORPORATIONInventors: Kazutoshi Ishikawa, Yukihiko Takita, Shinya Miyazawa
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Patent number: 8708235Abstract: Disclosed is a card reader which has a comparatively simple construction and is capable of appropriately detecting whether or not a magnetic head for skimming has been attached thereto. A card reader is provided with: a magnetic head which reads magnetic data recorded on a card and/or records magnetic data onto a card; a card insertion unit which has an insertion opening into which a card is inserted formed therein; and a metal sensor (which detects that a foreign body containing metal material has been attached to the front surface side of the card insertion unit. The metal sensor is arranged in substantially the same position as the arrangement position of the magnetic head, in the width direction of the card.Type: GrantFiled: January 26, 2011Date of Patent: April 29, 2014Assignee: Nidec Sankyo CorporationInventors: Shigeki Ozawa, Yukihiko Takita, Kazutoshi Ishikawa, Kazunori Takahashi
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Publication number: 20130299582Abstract: Disclosed is a card reader which has a comparatively simple construction and is capable of appropriately detecting whether or not a magnetic head for skimming has been attached thereto. A card reader is provided with: a magnetic head which reads magnetic data recorded on a card and/or records magnetic data onto a card; a card insertion unit which has an insertion opening into which a card is inserted formed therein; and a metal sensor (which detects that a foreign body containing metal material has been attached to the front surface side of the card insertion unit. The metal sensor is arranged in substantially the same position as the arrangement position of the magnetic head, in the width direction of the card.Type: ApplicationFiled: January 26, 2011Publication date: November 14, 2013Applicant: NIDEC SANKYO CORPORATIONInventors: Shigeki Ozawa, Yukihiko Takita, Kazutoshi Ishikawa, Kazunori Takahashi
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Patent number: 7607580Abstract: The present invention provides an object sensor configured such that excitation coils (13c and 13d) and a detection coil (12) are separately disposed, and the detection is performed in accordance with the balance between the excitation coils (13c and 13d) in a pair, a residual variation amount after the impedance due to a DC resistance part and the like has been offset and removed is obtained at high sensitivity with excellent linearity while using a small core body (11), regardless of the impedance including a DC resistance part. Additionally, the object sensor to be used as an inlet sensor is located in an appropriate position on a more upstream side than the read/write position in an insertion direction of the IC card. A contact terminal portion of the IC card is sensed whereby to detect the validity of the card inserted into the apparatus from a card insertion slot.Type: GrantFiled: February 28, 2003Date of Patent: October 27, 2009Assignee: NIDEC Sankyo CorporationInventors: Yukihiko Takita, Kenji Hirasawa, Shogo Momose, Yasuhiro Kitazawa
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Publication number: 20050218227Abstract: The present invention provides an object sensor configured such that excitation coils (13c and 13d) and a detection coil (12) are separately disposed, and the detection is performed in accordance with the balance between the excitation coils (13c and 13d) in a pair, a residual variation amount after the impedance due to a DC resistance part and the like has been offset and removed is obtained at high sensitivity with excellent linearity while using a small core body (11), regardless of the impedance including a DC resistance part. Additionally, the object sensor to be used as an inlet sensor is located in an appropriate position on a more upstream side than the read/write position in an insertion direction of the IC card. A contact terminal portion of the IC card is sensed whereby to detect the validity of the card inserted into the apparatus from a card insertion slot.Type: ApplicationFiled: February 28, 2003Publication date: October 6, 2005Inventors: Yukihiko Takita, Kenji Hirasawa, Shogo Momose, Yasuhiro Kitazawa
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Patent number: 6637653Abstract: A method for judging coercive force of a magnetic card to judge coercive force of a magnetic card to be used. According to the method for judging coercive force of a magnetic card for reproducing or recording magnetic information formed on a low coercive force card or a high coercive force card inserted from a card slot by a magnetic head, after erasing data of an inserted card by an electric current capable of erasing data of only a low coercive force card (step S32), the data of the card is reproduced (step S33), the inserted card is judged as the low coercive force card (step S36) if the data has been destroyed (No at the step S34). Destruction of the data is judged based on the number of times of flux reversal of the reproduced data or by a fact that specific data (STX code) which should be recorded on a predetermined card is not recognized.Type: GrantFiled: May 4, 2001Date of Patent: October 28, 2003Assignee: Kabushiki Kaisha Sankyo Seiki SeisakushoInventors: Yukihiko Takita, Yoshiharu Uemura
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Patent number: 6585156Abstract: A multichannel magnetic head includes a plurality of sets of magnetic core half bodies, each of the sets having two of the half bodies facing each other, and a plurality of magnetic gap portions, each of the gap portions located where two magnetic core half bodies face each other. The plurality of magnetic gap portions, when a magnetic medium is inserted therein, transferring record data between the magnetic medium and the magnetic head, and the gap distances of the magnetic gap portions being differentially preset to accommodate a physically warped magnetic medium. A magnetic card reader including a multichannel magnetic head has a plurality of magnetic gap portions, and the multichannel magnetic head is capable of recording data onto a magnetic medium in contact therewith. The multichannel magnetic head has gap distances that can be modified based on a possibility of spacings between the multichannel magnetic head and the magnetic medium so that a warped card can be accommodated.Type: GrantFiled: March 28, 2002Date of Patent: July 1, 2003Assignee: Sankyo Seiki Mfg. Co., Ltd.Inventor: Yukihiko Takita
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Publication number: 20020158125Abstract: A multichannel magnetic head includes a plurality of sets of magnetic core half bodies, each of the sets having two of the half bodies facing each other, and a plurality of magnetic gap portions, each of the gap portions located where two magnetic core half bodies face each other. The plurality of magnetic gap portions, when a magnetic medium is inserted therein, transferring record data between the magnetic medium and the magnetic head, and the gap distances of the magnetic gap portions being differentially preset to accommodate a physically warped magnetic medium. A magnetic card reader including a multichannel magnetic head has a plurality of magnetic gap portions, and the multichannel magnetic head is capable of recording data onto a magnetic medium in contact therewith. The multichannel magnetic head has gap distances that can be modified based on a possibility of spacings between the multichannel magnetic head and the magnetic medium so that a warped card can be accommodated.Type: ApplicationFiled: March 28, 2002Publication date: October 31, 2002Inventor: Yukihiko Takita