Patents by Inventor Aiko SAKAI
Aiko SAKAI 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: 10716459Abstract: An endoscope system includes: an image pickup device configured to output a digital signal; an EEPROM in which predetermined information concerning an endoscope is recorded; a signal control portion capable of selectively converting data of one of the digital signal outputted from the image pickup device and the predetermined information of the EEPROM to serial data and outputting the serial data; an electro-optical conversion portion configured to convert the data outputted from the signal control portion to an optical signal and output the optical signal; a universal cable; and a data switching portion switched to transfer the predetermined information from the EEPROM by the signal control portion and then transfer the digital signal by the signal control portion. The signal control portion decides through which of a metal transmitting member and an optical transmitting member the predetermined information is transmitted, based on a data amount of the predetermined information.Type: GrantFiled: September 16, 2017Date of Patent: July 21, 2020Assignee: OLYMPUS CORPORATIONInventors: Aiko Sakai, Hideyuki Kugimiya, Ryo Koshida
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Patent number: 10524646Abstract: A light source apparatus includes: a light source; a light source driving section; a light detection section; a temperature detection section; and a control section being configured to, when determining that detected brightness is outside a range of brightness set for detecting abnormality in the light source or the light detection section and detected temperature is within a range of temperature set for detecting the abnormality in the light source or the light detection section, cause the light source driving section to perform driving of the light source for a case of abnormality in the light detection section, and when determining that the detected brightness is outside the range of brightness and the detected temperature is outside the range of temperature, cause the light source driving section to perform driving of the light source for a case of abnormality in the light source.Type: GrantFiled: April 4, 2017Date of Patent: January 7, 2020Assignee: OLYMPUS CORPORATIONInventors: Aiko Sakai, Yusuke Yabe, Tomoya Takahashi, Kazue Hongo
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Patent number: 10225446Abstract: An image pickup system includes an optical sensor configured to pick up an optical image of an object illuminated with light of a plurality of colors emitted from a plurality of semiconductor light emitting elements with an image pickup device and detect each of light amounts of the light emitted from the plurality of semiconductor light emitting elements, and a controller including hardware. The controller adjusts color balance based on the light amounts of the plurality of colors detected at the optical sensor and sets an exposure timing of a light amount detecting unit according to image pickup operation of the image pickup device.Type: GrantFiled: December 3, 2016Date of Patent: March 5, 2019Assignee: OLYMPUS CORPORATIONInventors: Aiko Sakai, Yusuke Yabe, Tomoya Takahashi, Satoshi Tanaka, Kotaro Ogasawara, Susumu Hashimoto
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Patent number: 10219342Abstract: A light source device includes a semiconductor light source, a light source control section, an optical sensor, a sensor control section, and an intensity adjusting section. The light source control section controls a light quantity per field of light to be emitted from the semiconductor light source, by pulse width modulation. The optical sensor receives the light emitted from the semiconductor light source to acquire a quantity of the received light. The sensor control section controls the optical sensor to detect the light in an exposure period shorter than a minimum pulse width in the pulse width modulation, thereby acquiring the quantity of the received light which is acquired by the optical sensor. The intensity adjusting section adjusts emission intensity of the semiconductor light source on the basis of the quantity of the received light.Type: GrantFiled: December 19, 2016Date of Patent: February 26, 2019Assignee: OLYMPUS CORPORATIONInventors: Aiko Sakai, Yusuke Yabe, Tomoya Takahashi
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Patent number: 10085630Abstract: An endoscope apparatus includes: first and second cooling units configured to cool first and second light source portions; an image pickup portion configured to generate a picked-up image; and a cooling control portion configured to control amounts of light emission of the light source portions while maintaining an amount-of-light ratio so that the brightness of the picked-up image becomes the target brightness and control cooling based on the information about the amount-of-light ratio and the brightness control information; wherein the cooling control portion decides a cooling capacity of the first cooling units and a cooling capacity of the second cooling units for cooling the respective light source portions for which the amounts of light emission are controlled, at the cooling ratio, so as to cause the light source portions to be included within a predetermined temperature range, based on the brightness control information.Type: GrantFiled: April 29, 2016Date of Patent: October 2, 2018Assignee: OLYMPUS CORPORATIONInventors: Yutaka Shirota, Tomoya Takahashi, Masato Toda, Yusuke Yabe, Yusuke Yoshida, Aiko Sakai, Takahiro Masaki, Takahiro Hayama, Ryo Machida, Koji Omori
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Patent number: 10085611Abstract: A light source apparatus includes: a control section that acquires information relating to a ratio of a light amount value for light with second wavelength band to a light amount value for light with first wavelength band, obtains a light amount value for the light with the first wavelength band so that an observation image has a predetermined brightness, and, from the information relating to the ratio, determines a light amount value for the light with the second wavelength band, and generates light adjustment information for making first and second semiconductor light sources emit light with the light amount value for the light with the first wavelength band and the light amount value for the light with the second wavelength band; and a drive section that, based on the light adjustment information generated by the control section, drives the first and second semiconductor light sources.Type: GrantFiled: October 22, 2015Date of Patent: October 2, 2018Assignee: OLYMPUS CORPORATIONInventors: Yusuke Yabe, Tomoya Takahashi, Kotaro Ogasawara, Satoshi Tanaka, Aiko Sakai
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Patent number: 9961270Abstract: An imaging system includes: an imaging unit configured to capture an image in a temporally continuous manner; a change rate setting unit configured to variably set a change rate of brightness of image continuously captured by the imaging unit; a parameter setting unit configured to be capable of variably setting a light adjustment parameter for altering the change rate of the brightness of the image such that the change rate set by the change rate setting unit is obtained; a photometry unit configured to acquire a photometric value indicating the brightness of the image; and a light adjustment unit configured to generate, based on the photometric value, a light adjustment control signal in line with a light adjustment profile for causing the photometric value to reach a predetermined target value of the brightness within a certain time period.Type: GrantFiled: June 20, 2017Date of Patent: May 1, 2018Assignee: OLYMPUS CORPORATIONInventor: Aiko Sakai
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Publication number: 20180014716Abstract: An endoscope system includes: an image pickup device configured to output a digital signal; an EEPROM in which predetermined information concerning an endoscope is recorded; a signal control portion capable of selectively converting data of one of the digital signal outputted from the image pickup device and the predetermined information of the EEPROM to serial data and outputting the serial data; an electro-optical conversion portion configured to convert the data outputted from the signal control portion to an optical signal and output the optical signal; a universal cable; and a data switching portion switched to transfer the predetermined information from the EEPROM by the signal control portion and then transfer the digital signal by the signal control portion. The signal control portion decides through which of a metal transmitting member and an optical transmitting member the predetermined information is transmitted, based on a data amount of the predetermined information.Type: ApplicationFiled: September 16, 2017Publication date: January 18, 2018Applicant: OLYMPUS CORPORATIONInventors: Aiko SAKAI, Hideyuki KUGIMIYA, Ryo KOSHIDA
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Patent number: 9838610Abstract: An imaging system includes: an imaging device including an image sensor provided with an electronic shutter function, the imaging device being configured to capture a subject; a light source configured to emit illumination light for illuminating the subject; an identification unit configured to identify which one of a first light source and a second light source configured to emit light having a wavelength bandwidth different from a wavelength bandwidth of the first light source is employed as the light source used for observation; an electronic shutter controller configured to control the electronic shutter function of the image sensor based on a control pattern according to the classification of the light source identified by the identification unit; and an electronic shutter control pattern setting unit configured to set a control pattern of the electronic shutter function in accordance with the classification of the light source identified by the identification unit.Type: GrantFiled: June 9, 2017Date of Patent: December 5, 2017Assignee: OLYMPUS CORPORATIONInventors: Aiko Sakai, Satoshi Tanaka
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Publication number: 20170302837Abstract: An imaging system includes: an imaging unit configured to capture an image in a temporally continuous manner; a change rate setting unit configured to variably set a change rate of brightness of image continuously captured by the imaging unit; a parameter setting unit configured to be capable of variably setting a light adjustment parameter for altering the change rate of the brightness of the image such that the change rate set by the change rate setting unit is obtained; a photometry unit configured to acquire a photometric value indicating the brightness of the image; and a light adjustment unit configured to generate, based on the photometric value, a light adjustment control signal in line with a light adjustment profile for causing the photometric value to reach a predetermined target value of the brightness within a certain time period.Type: ApplicationFiled: June 20, 2017Publication date: October 19, 2017Applicant: OLYMPUS CORPORATIONInventor: Aiko SAKAI
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Publication number: 20170280037Abstract: An imaging system includes: an imaging device including an image sensor provided with an electronic shutter function, the imaging device being configured to capture a subject; a light source configured to emit illumination light for illuminating the subject; an identification unit configured to identify which one of a first light source and a second light source configured to emit light having a wavelength bandwidth different from a wavelength bandwidth of the first light source is employed as the light source used for observation; an electronic shutter controller configured to control the electronic shutter function of the image sensor based on a control pattern according to the classification of the light source identified by the identification unit; and an electronic shutter control pattern setting unit configured to set a control pattern of the electronic shutter function in accordance with the classification of the light source identified by the identification unit.Type: ApplicationFiled: June 9, 2017Publication date: September 28, 2017Applicant: OLYMPUS CORPORATIONInventors: Aiko SAKAI, Satoshi TANAKA
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Patent number: 9766447Abstract: A light source apparatus includes first and second light sources having different maximum light amounts used, a first light amount detection section detecting a light amount of first light of the first light source, a second light amount detection section detecting a light amount of second light of the second light source, a light amount limiting section limiting a light amount of light incident upon the second light amount detection section so that light amounts detected in the first light amount detection section and the second light amount detection section match a predetermined value within a detection range when light with the maximum light amounts used are emitted from the first light source and the second light source, and a control section controlling amounts of light emission of the first light source and the second light source based on detection results of the first and second light amount detection sections.Type: GrantFiled: June 29, 2016Date of Patent: September 19, 2017Assignee: OLYMPUS CORPORATIONInventors: Aiko Sakai, Ryo Machida, Yusuke Yabe, Tomoya Takahashi
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Publication number: 20170202445Abstract: A light source apparatus includes: a light source; a light source driving section; a light detection section; a temperature detection section; and a control section being configured to, when determining that detected brightness is outside a range of brightness set for detecting abnormality in the light source or the light detection section and detected temperature is within a range of temperature set for detecting the abnormality in the light source or the light detection section, cause the light source driving section to perform driving of the light source for a case of abnormality in the light detection section, and when determining that the detected brightness is outside the range of brightness and the detected temperature is outside the range of temperature, cause the light source driving section to perform driving of the light source for a case of abnormality in the light source.Type: ApplicationFiled: April 4, 2017Publication date: July 20, 2017Applicant: OLYMPUS CORPORATIONInventors: Aiko SAKAI, Yusuke YABE, Tomoya TAKAHASHI, Kazue HONGO
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Publication number: 20170105258Abstract: A light source device includes a semiconductor light source, a light source control section, an optical sensor, a sensor control section, and an intensity adjusting section. The light source control section controls a light quantity per field of light to be emitted from the semiconductor light source, by pulse width modulation. The optical sensor receives the light emitted from the semiconductor light source to acquire a quantity of the received light. The sensor control section controls the optical sensor to detect the light in an exposure period shorter than a minimum pulse width in the pulse width modulation, thereby acquiring the quantity of the received light which is acquired by the optical sensor. The intensity adjusting section adjusts emission intensity of the semiconductor light source on the basis of the quantity of the received light.Type: ApplicationFiled: December 19, 2016Publication date: April 13, 2017Applicant: OLYMPUS CORPORATIONInventors: Aiko SAKAI, Yusuke YABE, Tomoya TAKAHASHI
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Publication number: 20170085763Abstract: An image pickup system includes an optical sensor configured to pick up an optical image of an object illuminated with light of a plurality of colors emitted from a plurality of semiconductor light emitting elements with an image pickup device and detect each of light amounts of the light emitted from the plurality of semiconductor light emitting elements, and a controller including hardware. The controller adjusts color balance based on the light amounts of the plurality of colors detected at the optical sensor and sets an exposure timing of a light amount detecting unit according to image pickup operation of the image pickup device.Type: ApplicationFiled: December 3, 2016Publication date: March 23, 2017Applicant: OLYMPUS CORPORATIONInventors: Aiko SAKAI, Yusuke YABE, Tomoya TAKAHASHI, Satoshi TANAKA, Kotaro OGASAWARA, Susumu HASHIMOTO
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Patent number: 9518847Abstract: A light guide sensor includes a light source, a light guide member comprising a core which guides light radiated from the light source, a cladding formed around the core, and at least one detecting portion is formed, and a light receiving unit which receives the light that has been guided by the member and has passed via the detecting portion. The detecting portion includes a first opening formed by removal in the outer circumference of the member so that at least part of the cladding is left by a thickness such as not to transmit the light from the core, and a second opening formed within the range of the first opening to transmit the light from the core. A method of forming such a light guide sensor is provided.Type: GrantFiled: December 15, 2014Date of Patent: December 13, 2016Assignee: OLYMPUS CORPORATIONInventors: Aiko Sakai, Takeshi Ito, Jun Hane
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Publication number: 20160306163Abstract: A light source apparatus includes first and second light sources having different maximum light amounts used, a first light amount detection section detecting a light amount of first light of the first light source, a second light amount detection section detecting a light amount of second light of the second light source, a light amount limiting section limiting a light amount of light incident upon the second light amount detection section so that light amounts detected in the first light amount detection section and the second light amount detection section match a predetermined value within a detection range when light with the maximum light amounts used are emitted from the first light source and the second light source, and a control section controlling amounts of light emission of the first light source and the second light source based on detection results of the first and second light amount detection sections.Type: ApplicationFiled: June 29, 2016Publication date: October 20, 2016Applicant: OLYMPUS CORPORATIONInventors: Aiko SAKAI, Ryo MACHIDA, Yusuke YABE, Tomoya TAKAHASHI
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Patent number: 9444484Abstract: An encoder signal processing circuit is connected to encoder heads outputting an encoder signal in accordance with a relative displacement with respect to a corresponding scale in such a way that signals can be transmitted to and received from the encoder heads, and processes encoder signals from the encoder heads. The circuit includes a processing unit and a processing decision unit. The processing unit generates displacement information from the encoder signal. The processing decision unit decides at least one of content of processing for the encoder heads and content of processing on encoder signals read from the encoder heads after starting to read an encoder signal from one of the encoder heads.Type: GrantFiled: May 18, 2015Date of Patent: September 13, 2016Assignee: OLYMPUS CORPORATIONInventors: Ryo Tojo, Aiko Sakai
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Publication number: 20160235285Abstract: An endoscope apparatus includes: first and second cooling units configured to cool first and second light source portions; an image pickup portion configured to generate a picked-up image; and a cooling control portion configured to control amounts of light emission of the light source portions while maintaining an amount-of-light ratio so that the brightness of the picked-up image becomes the target brightness and control cooling based on the information about the amount-of-light ratio and the brightness control information; wherein the cooling control portion decides a cooling capacity of the first cooling units and a cooling capacity of the second cooling units for cooling the respective light source portions for which the amounts of light emission are controlled, at the cooling ratio, so as to cause the light source portions to be included within a predetermined temperature range, based on the brightness control information.Type: ApplicationFiled: April 29, 2016Publication date: August 18, 2016Applicant: OLYMPUS CORPORATIONInventors: Yutaka SHIROTA, Tomoya TAKAHASHI, Masato TODA, Yusuke YABE, Yusuke YOSHIDA, Aiko SAKAI, Takahiro MASAKI, Takahiro HAYAMA, Ryo MACHIDA, Koji OMORI
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Publication number: 20160037999Abstract: A light source apparatus includes: a control section that acquires information relating to a ratio of a light amount value for light with second wavelength band to a light amount value for light with first wavelength band, obtains a light amount value for the light with the first wavelength band so that an observation image has a predetermined brightness, and, from the information relating to the ratio, determines a light amount value for the light with the second wavelength band, and generates light adjustment information for making first and second semiconductor light sources emit light with the light amount value for the light with the first wavelength band and the light amount value for the light with the second wavelength band; and a drive section that, based on the light adjustment information generated by the control section, drives the first and second semiconductor light sources.Type: ApplicationFiled: October 22, 2015Publication date: February 11, 2016Applicant: OLYMPUS CORPORATIONInventors: Yusuke YABE, Tomoya TAKAHASHI, Kotaro OGASAWARA, Satoshi TANAKA, Aiko SAKAI