Patents by Inventor Hironori Fukuda
Hironori Fukuda 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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Patent number: 6857573Abstract: An article including a substrate and an invisible symbol on the substrate is disclosed. The invisible symbol is formed by a compound which includes a cyano group and has an infrared absorption wavelength apart from that of the substrate when heated.Type: GrantFiled: September 9, 2003Date of Patent: February 22, 2005Assignee: Kabushiki Kaisha ToshibaInventors: Taeko I. Urano, Kenji Sano, Hideo Nagai, Tomokazu Domon, Hironori Fukuda
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Publication number: 20040155113Abstract: An invisible symbol reading apparatus includes a heating unit for heating an invisible symbol formed on a sample and containing a material which emits infrared light when heated, a detecting unit for detecting infrared light emitted from the invisible symbol, and an arithmetic operation unit for binarizing a detection signal from the detecting unit. The arithmetic operation unit calculates a differential coefficient of the detection signal, that corresponds to a position on the sample. On the basis of upper and lower threshold values set for the differential coefficient, the arithmetic operation unit determines a maximum value of the differential coefficient in a region exceeding the upper threshold value and a minimum value of the differential coefficient in a region smaller than the lower threshold value. The arithmetic operation unit binarizes the detection signal by using the maximum or minimum value as a loading or trailing edge of a binary function.Type: ApplicationFiled: July 29, 2003Publication date: August 12, 2004Applicant: Kabushiki Kaisha ToshibaInventors: Taeko I. Urano, Kenji Sano, Hideo Nagai, Tomokazu Domon, Hironori Fukuda
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Patent number: 6712272Abstract: An invisible symbol reading apparatus includes a heating unit for heating an invisible symbol formed on a sample and containing a material which emits infrared light when heated, a detecting unit for detecting infrared light emitted from the invisible symbol, and an arithmetic operation unit for binarizing a detection signal from the detecting unit. The arithmetic operation unit calculates a differential coefficient of the detection signal, that corresponds to a position on the sample. On the basis of upper and lower threshold values set for the differential coefficient, the arithmetic operation unit determines a maximum value of the differential coefficient in a region exceeding the upper threshold value and a minimum value of the differential coefficient in a region smaller than the lower threshold value. The arithmetic operation unit binarizes the detection signal by using the maximum or minimum value as a leading or trailing edge of a binary function.Type: GrantFiled: July 30, 2002Date of Patent: March 30, 2004Assignee: Kabushiki Kaisha ToshibaInventors: Taeko I. Urano, Kenji Sano, Hideo Nagai, Tomokazu Domon, Hironori Fukuda
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Publication number: 20040046032Abstract: An invisible symbol reading apparatus includes a heating unit for heating an invisible symbol formed on a sample and containing a material which emits infrared light when heated, a detecting unit for detecting infrared light emitted from the invisible symbol, and an arithmetic operation unit for binarizing a detection signal from the detecting unit. The arithmetic operation unit calculates a differential coefficient of the detection signal, that corresponds to a position on the sample. On the basis of upper and lower threshold values set for the differential coefficient, the arithmetic operation unit determines a maximum value of the differential coefficient in a region exceeding the upper threshold value and a minimum value of the differential coefficient in a region smaller than the lower threshold value. The arithmetic operation unit binarizes the detection signal by using the maximum or minimum value as a leading or trailing edge of a binary function.Type: ApplicationFiled: September 9, 2003Publication date: March 11, 2004Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Taeko I. Urano, Kenji Sano, Hideo Nagai, Tomokazu Domon, Hironori Fukuda
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Publication number: 20020190129Abstract: An invisible symbol reading apparatus includes a heating unit for heating an invisible symbol formed on a sample and containing a material which emits infrared light when heated, a detecting unit for detecting infrared light emitted from the invisible symbol, and an arithmetic operation unit for binarizing a detection signal from the detecting unit. The arithmetic operation unit calculates a differential coefficient of the detection signal, that corresponds to a position on the sample. On the basis of upper and lower threshold values set for the differential coefficient, the arithmetic operation unit determines a maximum value of the differential coefficient in a region exceeding the upper threshold value and a minimum value of the differential coefficient in a region smaller than the lower threshold value. The arithmetic operation unit binarizes the detection signal by using the maximum or minimum value as a leading or trailing edge of a binary function.Type: ApplicationFiled: July 30, 2002Publication date: December 19, 2002Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Taeko Urano, Kenji Sano, Hideo Nagai, Tomokazu Domon, Hironori Fukuda
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Patent number: 6471126Abstract: An invisible symbol reading apparatus includes a heating unit for heating an invisible symbol formed on a sample and containing a material which emits infrared light when heated, a detecting unit for detecting infrared light emitted from the invisible symbol, and an arithmetic operation unit for binarizing a detection signal from the detecting unit. The arithmetic operation unit calculates a differential coefficient of the detection signal, that corresponds to a position on the sample. On the basis of upper and lower threshold values set for the differential coefficient, the arithmetic operation unit determines a maximum value of the differential coefficient in a region exceeding the upper threshold value and a minimum value of the differential coefficient in a region smaller than the lower threshold value. The arithmetic operation unit binarizes the detection signal by using the maximum or minimum value as a leading or trailing edge of a binary function.Type: GrantFiled: January 2, 2001Date of Patent: October 29, 2002Assignee: Kabushiki Kaisha ToshibaInventors: Taeko I. Urano, Kenji Sano, Hideo Nagai, Tomokazu Domon, Hironori Fukuda
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Publication number: 20010020677Abstract: An invisible symbol reading apparatus includes a heating unit for heating an invisible symbol formed on a sample and containing a material which emits infrared light when heated, a detecting unit for detecting infrared light emitted from the invisible symbol, and an arithmetic operation unit for binarizing a detection signal from the detecting unit. The arithmetic operation unit calculates a differential coefficient of the detection signal, that corresponds to a position on the sample. On the basis of upper and lower threshold values set for the differential coefficient, the arithmetic operation unit determines a maximum value of the differential coefficient in a region exceeding the upper threshold value and a minimum value of the differential coefficient in a region smaller than the lower threshold value. The arithmetic operation unit binarizes the detection signal by using the maximum or minimum value as a leading or trailing edge of a binary function.Type: ApplicationFiled: January 2, 2001Publication date: September 13, 2001Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Taeko I. Urano, Kenji Sano, Hideo Nagai, Tomokazu Domon, Hironori Fukuda
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Patent number: 6168081Abstract: An invisible symbol reading apparatus includes a heating unit for heating an invisible symbol formed on a sample and containing a material which emits infrared light when heated, a detecting unit for detecting infrared light emitted from the invisible symbol, and an arithmetic operation unit for binarizing a detection signal from the detecting unit. The arithmetic operation unit calculates a differential coefficient of the detection signal, that corresponds to a position on the sample. On the basis of upper and lower threshold values set for the differential coefficient, the arithmetic operation unit determines a maximum value of the differential coefficient in a region exceeding the upper threshold value and a minimum value of the differential coefficient in a region smaller than the lower threshold value. The arithmetic operation unit binarizes the detection signal by using the maximum or minimum value as a leading or trailing edge of a binary function.Type: GrantFiled: March 22, 1999Date of Patent: January 2, 2001Assignee: Kabushiki Kaisha ToshibaInventors: Taeko I. Urano, Kenji Sano, Hideo Nagai, Tomokazu Domon, Hironori Fukuda
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Patent number: 6108045Abstract: A display apparatus includes a luminance change detecting unit for detecting change of luminance of a cathode ray tube, a deflection size control quantity adjusting unit connected to the luminance change detecting unit for stabilizing a deflection size by changing a deflection size correcting quantity at different rates of change for a low luminance range and a high luminance range, respectively, on the basis of the detected change of luminance. The deflection size control quantity adjusting unit generates a proper deflection size control quantity adjusting voltage by synthesizing a high frequency component and a low frequency component contained in a signal indicating the luminance change with different gains, respectively.Type: GrantFiled: July 22, 1999Date of Patent: August 22, 2000Assignees: Hitachi, Ltd., Hitachi Video & Information System, Inc.Inventors: Makoto Onozawa, Hironori Fukuda, Yuzo Nishinaka, Junji Motoshima
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Patent number: 6011593Abstract: A display apparatus includes a luminance change detecting unit for detecting change of luminance of a cathode ray tube, a deflection size control quantity adjusting unit connected to the luminance change detecting unit for stabilizing a deflection size by changing a deflection size correcting quantity at different rates of change for a low luminance range and a high luminance range, respectively, on the basis of the detected change of luminance. The deflection size control quantity adjusting unit generates a proper deflection size control quantity adjusting voltage by synthesizing a high frequency component and a low frequency component contained in a signal indicating the luminance change with different gains, respectively.Type: GrantFiled: August 8, 1997Date of Patent: January 4, 2000Assignees: Hitachi, Ltd., Hitachi Video & Information System, Inc.Inventors: Makoto Onozawa, Hironori Fukuda, Yuzo Nishinaka, Junji Motoshima
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Patent number: 4590807Abstract: In a torque sensor of a noncontact type for sensing a torque applied to a shaft, a magnetic ribbon is bonded to a circumferential portion of the peripheral surface of the shaft, and a core member made of a magnetic material is arranged above the shaft surface so that its end faces are faced to the magnetic ribbon. A exciting coil and a detecting coil wound around the core so that a magnetic flux produced by the exciting coil and delivered to the detecting coil is detected by the detecting coil. The magnetic ribbon has a length L0 equal to or smaller than one half of the circumferential length Ls of the shaft 4 and satisfying an inequality given byL1.ltoreq.L0.ltoreq.2L1where L1 is the center-to-center distance between the end faces of the core.Type: GrantFiled: December 17, 1984Date of Patent: May 27, 1986Assignee: Kabushiki Kaisha ToshibaInventors: Tadahiko Kobayashi, Masashi Sahashi, Koichiro Inomata, Tomokazu Domon, Hironori Fukuda