Patents by Inventor Harutaka Sekiya
Harutaka Sekiya 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: 11796608Abstract: The inventive concepts provide a magnetic property measurement apparatus capable of quickly measuring a magnetic property of a subject without a decrease in a measurement speed that might occur due to an electromagnet. In addition, the inventive concepts provide a magnetic property measurement apparatus capable of monitoring a magnetization distribution of a memory device as an image and integrating images by using a TDI camera, thereby being capable of performing highly sensitive measurement and not having to capture images for a long time. The magnetic property measurement apparatus includes: a magnetic field generation unit configured to generate a magnetic field which is constant with time and varies with relative position; a mobile unit configured to move a subject to be measured in the magnetic field; and a measurement unit configured to measure a magnetic property of the subject moving in the magnetic field.Type: GrantFiled: September 7, 2021Date of Patent: October 24, 2023Assignee: Samsung Electronics Co., Ltd.Inventors: Harutaka Sekiya, Shinji Ueyama, Tomoki Onishi
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Publication number: 20230125628Abstract: To reduce a measurement time, an inspection device includes a stage configured to fix a magnetoresistive random access memory (MRAM) to a stage surface and moving the MRAM, a plurality of magnets configured to generate a gradient magnetic, a plurality of line sensors comprising a first line sensor for detecting a magneto-optical effect at a first location of the MRAM and a second line sensor for detecting the magneto-optical effect at a second location that is different from the first location by moving a location of the MRAM within the gradient magnetic field, and an information processor configured to process the magneto-optical effect detected by the plurality of line sensors. Thus, throughput may be improved.Type: ApplicationFiled: October 19, 2022Publication date: April 27, 2023Applicant: Samsung Electronics Co., Ltd.Inventors: Shinji UEYAMA, Ingi KIM, Harutaka SEKIYA, Tomoki ONISHI
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Publication number: 20220137160Abstract: The inventive concepts provide a magnetic property measurement apparatus capable of quickly measuring a magnetic property of a subject without a decrease in a measurement speed that might occur due to an electromagnet. In addition, the inventive concepts provide a magnetic property measurement apparatus capable of monitoring a magnetization distribution of a memory device as an image and integrating images by using a TDI camera, thereby being capable of performing highly sensitive measurement and not having to capture images for a long time. The magnetic property measurement apparatus includes: a magnetic field generation unit configured to generate a magnetic field which is constant with time and varies with relative position; a mobile unit configured to move a subject to be measured in the magnetic field; and a measurement unit configured to measure a magnetic property of the subject moving in the magnetic field.Type: ApplicationFiled: September 7, 2021Publication date: May 5, 2022Applicant: Samsung Electronics Co., Ltd.Inventors: Harutaka SEKIYA, Shinji UEYAMA, Tomoki ONISHI
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Patent number: 9903705Abstract: An automatic focus control apparatus includes a light detector, which receives light reflected by a surface of a wafer and generates a light reception signal based on the received signal, a controller, which generates a driving signal, the driving signal being one of a first signal and a second signal, the driving signal indicating whether to perform automatic focus control based on the light reception signal, a focus error corrector, which generates a focus error correction signal based on the driving signal, and a stage driver, which displaces a wafer stage supporting the wafer by adjusting the z-axis position of the wafer stage based on the focus error correcting signal if the driving signal is the first signal, and maintains the z-axis position of the wafer stage based on the focus error correction signal if the driving signal is the second signal.Type: GrantFiled: July 11, 2016Date of Patent: February 27, 2018Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kwang-soo Kim, Harutaka Sekiya, Kwang-jun Yoon, Sung-won Park, Young-duk Kim, Heon-ju Shin, Byeong-hwan Jeon
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Publication number: 20170108329Abstract: An automatic focus control apparatus includes a light detector, which receives light reflected by a surface of a wafer and generates a light reception signal based on the received signal, a controller, which generates a driving signal, the driving signal being one of a first signal and a second signal, the driving signal indicating whether to perform automatic focus control based on the light reception signal, a focus error corrector, which generates a focus error correction signal based on the driving signal, and a stage driver, which displaces a wafer stage supporting the wafer by adjusting the z-axis position of the wafer stage based on the focus error correcting signal if the driving signal is the first signal, and maintains the z-axis position of the wafer stage based on the focus error correction signal if the driving signal is the second signal.Type: ApplicationFiled: July 11, 2016Publication date: April 20, 2017Applicant: Samsung Electronics Co., Ltd.Inventors: KWANG-SOO KIM, Harutaka SEKIYA, Kwang-jun YOON, Sung-won PARK, Young-duk KIM, Heon-ju SHIN, Byeong-hwan JEON
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Patent number: 9256061Abstract: A focus control apparatus and method capable of generating a focus position signal according to focus position error even in proximity to an interface between regions having different thicknesses, to perform a high precision focus position control using the focus position signal, are provided. A focus control apparatus includes an error signal correction portion configured to process a focus error signal that indicates an error of a focus position of an optical system with respect to an object. Moreover, the focus control apparatus includes a region conversion detection portion configured to output a region signal that corresponds to a first region or a second region of the object. The first and second regions of the object have different respective heights.Type: GrantFiled: December 6, 2013Date of Patent: February 9, 2016Assignee: Samsung Electronics Co., Ltd.Inventors: Mitsuhiro Togashi, Harutaka Sekiya
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Publication number: 20140160558Abstract: A focus control apparatus and method capable of generating a focus position signal according to a real focus position error even in proximity to the interference between regions having different thicknesses to perform a high precision focus position control using the focus position signal are provided.Type: ApplicationFiled: December 6, 2013Publication date: June 12, 2014Applicant: Samsung Electronics Co., Ltd.Inventors: Mitsuhiro Togashi, Harutaka Sekiya
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Patent number: 7440373Abstract: An optical disk drive capable of detecting a surface deviation of a disk during a very short period includes an analog-to-digital converter (ADC) converting a focus error signal output from a pickup into digital data, and a central processing unit (CPU) writing an output of the ADC to a memory during one rotation of a motor according to a timing of a pulse signal output from a spindle motor. After that, the CPU reads data written to the memory and obtains a sine curve that minimizes the sum of squares of errors among data by a least square method. The CPU obtains a peak-to-peak value of the obtained sine curve and compares the peak-to-peak value to a predetermined threshold value, thereby determining the existence of the surface deviation of the disk.Type: GrantFiled: February 5, 2004Date of Patent: October 21, 2008Assignee: Samsung Electronics Co., Ltd.Inventor: Harutaka Sekiya
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Patent number: 7411886Abstract: A device for recording information on an optical disc so as to improve the recording quality of the information when a recording operation has just started. The recording device includes a luminous element radiating a light for recording information on the optical disc; a radiation intensity controller constantly controlling an intensity of radiation of the light radiated by the luminous element; a constant outputting unit providing a constant energy to the luminous element; a selector selectively selecting one of the outputs of the intensity of radiation controller and the constant outputting unit; wherein, the selector selects the output from the constant outputting unit during a predetermined duration from a starting time of recording the information on the optical disc, and selects the output from the intensity of radiation controller afterward.Type: GrantFiled: November 22, 2005Date of Patent: August 12, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Harutaka Sekiya, Yuichiro Tomishima
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Publication number: 20060245327Abstract: An optical information writing apparatus includes a written state determination unit and a write strategy setting unit. The written state determination unit determines whether an area of an optical recording medium in which information is to be recorded is used or blank. The write strategy setting unit sets a write strategy in accordance with whether the area is used or blank. When the area is used, the write strategy setting unit performs an overwrite operation before setting the write strategy.Type: ApplicationFiled: April 28, 2006Publication date: November 2, 2006Inventors: Toskiaki Suzuki, Toru Yoshida, Shin Kagami, Harutaka Sekiya
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Publication number: 20060209651Abstract: An optical information recording apparatus, an apparatus and method for setting a write strategy, and a computer program therefor are provided. In the optical information recording apparatus, a write strategy corresponding to different linear velocities of an optical recording medium is set, and, based on the set write strategy, a write strategy corresponding to an arbitrary linear velocity is determined.Type: ApplicationFiled: February 27, 2006Publication date: September 21, 2006Inventors: Harutaka Sekiya, Shin Kagami, Toshiaki Suzuki, Toru Yoshida
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Patent number: 7057989Abstract: A device for recording information on an optical disc so as to improve the recording quality of the information when a recording operation has just started. The recording device includes a luminous element radiating a light for recording information on the optical disc; a radiation intensity controller constantly controlling an intensity of radiation of the light radiated by the luminous element; a constant outputting unit providing a constant energy to the luminous element; a selector selectively selecting one of the outputs of the intensity of radiation controller and the constant outputting unit; wherein, the selector selects the output from the constant outputting unit during a predetermined duration from a starting time of recording the information on the optical disc, and selects the output from the intensity of radiation controller afterward.Type: GrantFiled: June 28, 2004Date of Patent: June 6, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Harutaka Sekiya, Yuichiro Tomishima
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Publication number: 20060077837Abstract: A device for recording information on an optical disc so as to improve the recording quality of the information when a recording operation has just started. The recording device includes a luminous element radiating a light for recording information on the optical disc; a radiation intensity controller constantly controlling an intensity of radiation of the light radiated by the luminous element; a constant outputting unit providing a constant energy to the luminous element; a selector selectively selecting one of the outputs of the intensity of radiation controller and the constant outputting unit; wherein, the selector selects the output from the constant outputting unit during a predetermined duration from a starting time of recording the information on the optical disc, and selects the output from the intensity of radiation controller afterward.Type: ApplicationFiled: November 22, 2005Publication date: April 13, 2006Applicant: Samsung Electronics Co., Ltd.Inventors: Harutaka Sekiya, Yuichiro Tomishima
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Patent number: 6999402Abstract: A device for recording information on an optical disc so as to improve the recording quality of the information when a recording operation has just started. The recording device includes a luminous element radiating a light for recording information on the optical disc; a radiation intensity controller constantly controlling an intensity of radiation of the light radiated by the luminous element; a constant outputting unit providing a constant energy to the luminous element; a selector selectively selecting one of the outputs of the intensity of radiation controller and the constant outputting unit; wherein, the selector selects the output from the constant outputting unit during a predetermined duration from a starting time of recording the information on the optical disc, and selects the output from the intensity of radiation controller afterward.Type: GrantFiled: June 28, 2004Date of Patent: February 14, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Harutaka Sekiya, Yuichiro Tomishima
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Publication number: 20040246844Abstract: A device for recording information on an optical disc so as to improve the recording quality of the information when a recording operation has just started. The recording device includes a luminous element radiating a light for recording information on the optical disc; a radiation intensity controller constantly controlling an intensity of radiation of the light radiated by the luminous element; a constant outputting unit providing a constant energy to the luminous element; a selector selectively selecting one of the outputs of the intensity of radiation controller and the constant outputting unit; wherein, the selector selects the output from the constant outputting unit during a predetermined duration from a starting time of recording the information on the optical disc, and selects the output from the intensity of radiation controller afterward.Type: ApplicationFiled: June 28, 2004Publication date: December 9, 2004Applicant: Samsung Electronics Co., Ltd.Inventors: Harutaka Sekiya, Yuichiro Tomishima
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Publication number: 20040246845Abstract: A device for recording information on an optical disc so as to improve the recording quality of the information when a recording operation has just started. The recording device includes a luminous element radiating a light for recording information on the optical disc; a radiation intensity controller constantly controlling an intensity of radiation of the light radiated by the luminous element; a constant outputting unit providing a constant energy to the luminous element; a selector selectively selecting one of the outputs of the intensity of radiation controller and the constant outputting unit; wherein, the selector selects the output from the constant outputting unit during a predetermined duration from a starting time of recording the information on the optical disc, and selects the output from the intensity of radiation controller afterward.Type: ApplicationFiled: June 28, 2004Publication date: December 9, 2004Applicant: Samsung Electronics Co., Ltd.Inventors: Harutaka Sekiya, Yuichiro Tomishima
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Publication number: 20040218496Abstract: An optical disk drive capable of detecting a surface deviation of a disk during a very short period includes an analog-to-digital converter (ADC) converting a focus error signal output from a pickup into digital data, and a central processing unit (CPU) writing an output of the ADC to a memory during one rotation of a motor according to a timing of a pulse signal output from a spindle motor. After that, the CPU reads data written to the memory and obtains a sine curve that minimizes the sum of squares of errors among data by a least square method. The CPU obtains a peak-to-peak value of the obtained sine curve and compares the peak-to-peak value to a predetermined threshold value, thereby determining the existence of the surface deviation of the disk.Type: ApplicationFiled: February 5, 2004Publication date: November 4, 2004Applicant: Samsung Electronics Co. Ltd.Inventor: Harutaka Sekiya
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Patent number: 6791923Abstract: A device for recording information on an optical disc so as to improve the recording quality of the information when a recording operation has just started. The recording device includes a luminous element radiating a light for recording information on the optical disc; a radiation intensity controller constantly controlling an intensity of radiation of the light radiated by the luminous element; a constant outputting unit providing a constant energy to the luminous element; a selector selectively selecting one of the outputs of the intensity of radiation controller and the constant outputting unit; wherein, the selector selects the output from the constant outputting unit during a predetermined duration from a starting time of recording the information on the optical disc, and selects the output from the intensity of radiation controller afterward.Type: GrantFiled: April 24, 2001Date of Patent: September 14, 2004Assignee: Samsung Electronics Co., Ltd.Inventors: Harutaka Sekiya, Yuichiro Tomishima
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Publication number: 20010043528Abstract: A device for recording information on an optical disc so as to improve the recording quality of the information when a recording operation has just started. The recording device includes a luminous element radiating a light for recording information on the optical disc; a radiation intensity controller constantly controlling an intensity of radiation of the light radiated by the luminous element; a constant outputting unit providing a constant energy to the luminous element; a selector selectively selecting one of the outputs of the intensity of radiation controller and the constant outputting unit; wherein, the selector selects the output from the constant outputting unit during a predetermined duration from a starting time of recording the information on the optical disc, and selects the output from the intensity of radiation controller afterward.Type: ApplicationFiled: April 24, 2001Publication date: November 22, 2001Inventors: Harutaka Sekiya, Yuichiro Tomishima
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Patent number: 6154338Abstract: On the upper surface of a cartridge case 4, there are formed a pair of press protrusions 4a situated on both sides thereof, a recess 4b situated between the two press protrusions 4a, first and second swelled portions 4c and 4d situated at the front and rear ends of the recess 4b of the cartridge case 4 and stopper protrusions 4e formed so as to continuously extend from both sides of the rear end of the second swelled portion 4d, the configurations of the front and rear end surfaces with respect to the direction in which the disc cartridge 3 is inserted being different from each other.Type: GrantFiled: April 28, 1997Date of Patent: November 28, 2000Assignee: Alps Electric Co., Ltd.Inventors: Shinkichi Sasaki, Harutaka Sekiya