Patents by Inventor Keiji Handa
Keiji Handa 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: 10821724Abstract: The present application is in at least one aspect directed to solving a problem of providing an inkjet recording device and an inkjet head driving method, in which instantaneous power consumption of a plurality of drive waveform generation circuits can be reduced while not requiring correction of an ink landing position without a complex structure. The problem is solved by dividing a plurality of pressure generating elements into first to n-th sets (n is an integer of 2 or more), and applying drive pulses to the pressure generating elements in the respective sets per every pixel period. The drive pulse combines any one of n time sharing drive waveforms (time sharing drive 1, 2, 3) with a common drive waveform (COM) as a rendering waveform, and the n time sharing drive waves are obtained by delaying a part of the rendering waveform by a time different from each other and have application timing deviated from each other.Type: GrantFiled: February 7, 2017Date of Patent: November 3, 2020Assignee: KONICA MINOLTA, INC.Inventors: Yasuhiko Suetomi, Takakazu Kuki, Keiji Handa, Yuusuke Kimura
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Publication number: 20190070850Abstract: The present application is in at least one aspect directed to solving a problem of providing an inkjet recording device and an inkjet head driving method, in which instantaneous power consumption of a plurality of drive waveform generation circuits can be reduced while not requiring correction of an ink landing position without a complex structure. The problem is solved by dividing a plurality of pressure generating elements into first to n-th sets (n is an integer of 2 or more), and applying drive pulses to the pressure generating elements in the respective sets per every pixel period. The drive pulse combines any one of n time sharing drive waveforms (time sharing drive 1, 2, 3) with a common drive waveform (COM) as a rendering waveform, and the n time sharing drive waves are obtained by delaying a part of the rendering waveform by a time different from each other and have application timing deviated from each other.Type: ApplicationFiled: February 7, 2017Publication date: March 7, 2019Inventors: YASUHIKO SUETOMI, TAKAKAZU KUKI, KEIJI HANDA, YUUSUKE KIMURA
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Patent number: 8317814Abstract: A medical device includes: a medical instrument introduced into a body cavity and having a contact portion that is fixed in contact with a wall within a body, and a wire; an extracorporeal device installed on a body surface and having a hole portion through which the wire can be inserted and removed, fixing mechanisms for fixing the wire inserted through the hole portion, and a housing that is fixed in contact with the body surface; and a pressure adjusting portion provided in one of the medical instrument and the extracorporeal device for maintaining a predetermined tensile force or more that is applied to the wire when the wire is fixed by the fixing mechanism with a body wall being sandwiched between the contact portion and the housing.Type: GrantFiled: January 7, 2009Date of Patent: November 27, 2012Assignee: Olympus Medical Systems Corp.Inventors: Hitoshi Karasawa, Sho Nakajima, Daisuke Asada, Keiji Handa
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Patent number: 8267854Abstract: An endoscope system includes a camera for picking up an image inside a body cavity, a camera side magnet connected to the camera and a fixing magnet, for fixing the camera inside the body cavity by holding an abdominal wall from different surfaces of the abdominal wall, and a second CCU for controlling the camera.Type: GrantFiled: June 4, 2008Date of Patent: September 18, 2012Assignee: Olympus Medical Systems Corp.Inventors: Daisuke Asada, Keiji Handa, Hitoshi Karasawa
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Patent number: 8259167Abstract: A scattering medium internal observation apparatus according to the present invention includes: a light source; an illuminating apparatus that guides light from the light source to an observation object that is a scattering body; and an observation optical system for observing the observation object illuminated by the illuminating apparatus, wherein the illuminating apparatus has a light-guiding member that guides light from the light source to a surface of the observation object, and a light-shielding member that covers the surface of the observation object and which shields light reflected or scattered in the vicinity of the light-guiding member of the observation object is disposed in the vicinity of an end portion of the light-guiding member on an observation object-side.Type: GrantFiled: September 9, 2008Date of Patent: September 4, 2012Assignees: Olympus Medical Systems Corp., Olympus CorporationInventors: Hiroshi Ishiwata, Hiroyuki Nishida, Keiji Handa, Kenji Harano, Daisuke Asada
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Patent number: 8182414Abstract: An endoscope system having a first image pickup device including at least one image pickup unit that is capable of picking up an image of an object, a second image pickup device including at least one image pickup unit, the second image pickup device being different from the first image pickup device, a retaining member being provided for retaining the second image pickup device in a body cavity, and including a camera cable that is connected to the second image pickup device and transmits an image pickup signal obtained by the second image pickup device, and a wire connected to the second image pickup device, a signal processing device that is provided outside the body cavity and processes image pickup signals obtained by the first image pickup device and the second image pickup device, and a display device that displays an image signal outputted from the signal processing device.Type: GrantFiled: June 4, 2008Date of Patent: May 22, 2012Assignee: Olympus Medical Systems Corp.Inventors: Keiji Handa, Hitoshi Karasawa, Daisuke Asada
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Publication number: 20100113872Abstract: A medical apparatus includes a medical instrument that is introduced into a body cavity and has a driven posture control portion; a fixing portion for fixing the medical instrument to a body wall inside a body cavity; a movable portion that is interposed between the medical instrument and the fixing portion and movably connects the medical instrument to the fixing portion; and an extracorporeal device that is installed outside the body and has a posture control portion that moves the medical instrument relative to the fixing portion.Type: ApplicationFiled: January 11, 2010Publication date: May 6, 2010Applicant: OLYMPUS MEDICAL SYSTEMS CORP.Inventors: Daisuke ASADA, Hitoshi KARASAWA, Keiji HANDA, Sho NAKAJIMA
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Publication number: 20090187073Abstract: A medical device includes: a medical instrument introduced into a body cavity and having a contact portion that is fixed in contact with a wall within a body, and a wire; an extracorporeal device installed on a body surface and having a hole portion through which the wire can be inserted and removed, fixing mechanisms for fixing the wire inserted through the hole portion, and a housing that is fixed in contact with the body surface; and a pressure adjusting portion provided in one of the medical instrument and the extracorporeal device for maintaining a predetermined tensile force or more that is applied to the wire when the wire is fixed by the fixing mechanism with a body wall being sandwiched between the contact portion and the housing.Type: ApplicationFiled: January 7, 2009Publication date: July 23, 2009Applicant: OLYMPUS MEDICAL SYSTEMS CORP.Inventors: Hitoshi KARASAWA, Sho NAKAJIMA, Daisuke ASADA, Keiji HANDA
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Publication number: 20090082627Abstract: A medical apparatus includes: a medical device equipped with a driven attitude controller and introduced into a body cavity; a fastener detachably installed on the medical device and used for fastening to a body wall in the body cavity; and an attitude control apparatus equipped with an attitude controller which moves the medical device with respect to the fastener.Type: ApplicationFiled: September 18, 2008Publication date: March 26, 2009Applicant: OLYMPUS MEDICAL SYSTEMS CORP.Inventors: Hitoshi KARASAWA, Daisuke ASADA, Keiji HANDA, Sho NAKAJIMA
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Publication number: 20090009595Abstract: A scattering medium internal observation apparatus according to the present invention includes: a light source; an illuminating apparatus that guides light from the light source to an observation object that is a scattering body; and an observation optical system for observing the observation object illuminated by the illuminating apparatus, wherein the illuminating apparatus has a light-guiding member that guides light from the light source to a surface of the observation object, and a light-shielding member that covers the surface of the observation object and which shields light reflected or scattered in the vicinity of the light-guiding member of the observation object is disposed in the vicinity of an end portion of the light-guiding member on an observation object-side.Type: ApplicationFiled: September 9, 2008Publication date: January 8, 2009Applicants: OLYMPUS MEDICAL SYSTEMS CORP., OLYMPUS CORPORATIONInventors: Hiroshi ISHIWATA, Hiroyuki NISHIDA, Keiji HANDA, Kenji HARANO, Daisuke ASADA
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Publication number: 20080312500Abstract: An endoscope system includes a camera for picking up an image inside a body cavity, a camera side magnet connected to the camera and a fixing magnet, for fixing the camera inside the body cavity by holding an abdominal wall from different surfaces of the abdominal wall, and a second CCU for controlling the camera.Type: ApplicationFiled: June 4, 2008Publication date: December 18, 2008Applicant: OLYMPUS MEDICAL SYSTEMS CORP.Inventors: Daisuke Asada, Keiji Handa, Hitoshi Karasawa
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Publication number: 20080309758Abstract: An endoscope system has a camera which picks up an image in a body cavity, and a needle portion which is an electrode for transmitting a signal picked up by the camera, and which is pierced through a body wall, to transmit the signal from the camera to the outside of the body cavity.Type: ApplicationFiled: June 4, 2008Publication date: December 18, 2008Applicant: OLYMPUS MEDICAL SYSTEMS CORP.Inventors: Hitoshi Karasawa, Keiji Handa, Daisuke Asada
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Publication number: 20080312499Abstract: An endoscope system according to the present invention includes at least one first photographing device that can photograph an object, at least one second photographing device different from the first photographing device, a retaining member for retaining the second photographing device in a body cavity, a signal processing device that processes signals photographed by the first photographing device and the second photographing device, and a display device that displays an image signal outputted from the signal processing device.Type: ApplicationFiled: June 4, 2008Publication date: December 18, 2008Applicant: OLYMPUS MEDICAL SYSTEMS CORP.Inventors: Keiji Handa, Hitoshi Karasawa, Daisuke Asada
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Publication number: 20070027362Abstract: An infrared observation system comprises: a light source unit for generating illumination light for irradiating light including infrared light of a long wavelength exceeding at least a 1000-nm wavelength upon a living body tissue inside or outside the body in a broadband or a narrowband; an infrared image capturing unit for capturing an image using infrared light of a wavelength band exceeding 1000 nm in the light reflected from or transmitted through at the living body tissue; and an identifying unit for facilitating identification between a case in which living body tissue is blood or a blood vessel, and a case in which the living body tissue is other living body tissue, using the difference of moisture extinction properties in the wavelength band exceeding a wavelength of 1000 nm.Type: ApplicationFiled: July 27, 2006Publication date: February 1, 2007Applicant: OLYMPUS MEDICAL SYSTEMS CORP.Inventors: Keiji Handa, Kenji Harano, Hiroyuki Nishida, Hiroshi Ishiwata, Daisuke Asada
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Patent number: 6693397Abstract: A light-source device includes a lamp unit having a light-source lamp and a device housing which is provided with a lamp-unit container for containing the lamp unit in a removable manner. The device housing includes a CPU for measuring the illumination time of the light-source lamp and an antenna for sending the illumination time measured by the CPU to the lamp unit. The lamp unit includes an RFID tag which is fixed thereto. The RFID tag is provided with an antenna for receiving the illumination time information sent from the antenna of the housing and a rewritable memory for storing the illumination time information received by the antenna of the tag.Type: GrantFiled: July 31, 2002Date of Patent: February 17, 2004Assignee: Olympus CorporationInventors: Keiji Handa, Masanori Yajima, Keisuke Miura, Nobuyuki Furukawa, Shinya Masuda, Keiji Shioda, Takeaki Nakamura
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Publication number: 20030060682Abstract: A light-source device includes a lamp unit having a light-source lamp and a device housing which is provided with a lamp-unit container for containing the lamp unit in a removable manner. The device housing includes a CPU for measuring the illumination time of the light-source lamp and an antenna for sending the illumination time measured by the CPU to the lamp unit. The lamp unit includes an RFID tag which is fixed thereto. The RFID tag is provided with an antenna for receiving the illumination time information sent from the antenna of the housing and a rewritable memory for storing the illumination time information received by the antenna of the tag.Type: ApplicationFiled: July 31, 2002Publication date: March 27, 2003Applicant: OLYMPUS OPTICAL CO., LTD.Inventors: Keiji Handa, Masanori Yajima, Keisuke Miura, Nobuyuki Furukawa, Shinya Masuda, Keiji Shioda, Takeaki Nakamura
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Patent number: 5526249Abstract: A light source device including a lamp-exchanging door which is attached/removed when a lamp is replaced and an electrode-connection/separation arrangement for making connection/separation between an electrode of a lamp driving circuit and an electrode of a lamp when the lamp-exchanging door is attached/removed.Type: GrantFiled: February 25, 1993Date of Patent: June 11, 1996Assignee: Olympus Optical Co., Ltd.Inventors: Isamu Karasawa, Toshiaki Noguchi, Masato Toda, Masanobu Koitabashi, Keiji Handa, Akihiro Amemiya, Yoshihiro Okada, Toshiaki Nishikori, Tsuguhisa Sasai, Kazufumi Takamizawa
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Patent number: 5335154Abstract: A light source comprises a lamp house including a source lamp for emitting illumination light in a certain direction and heat sinks for cooling the source lamp, a base member for holding the lamp house and moving the lamp house to adjust the optical axis of illumination light the source lamp emits, and an optical axis adjustment mechanism operation unit lying outside the lamp house to be manipulated from the side of the lamp house and driving the optical axis adjustment mechanism.Type: GrantFiled: September 8, 1992Date of Patent: August 2, 1994Assignee: Olympus Optical Co., Ltd.Inventors: Masanobu Koitabashi, Masato Toda, Keiji Handa
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Patent number: 5020724Abstract: A nozzle for water jet cutting has a piezoelectric element provided at a position for acting on a fluid in its pressure chamber. A voltage varying with time is applied to the piezoelectric element to provide flow rate oscillation or pressure pulsation to the fluid which is jetted from the nozzle.Type: GrantFiled: October 30, 1989Date of Patent: June 4, 1991Assignee: Agency of Industrial Science and Technology, Ministry of International Trade & IndustryInventors: Fumio Kiyono, Takayuki Saito, Keiji Handa
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Patent number: 4368923Abstract: A nodule collector for deep sea mining includes an outer sledge and an inner sledge disposed in and connected to the outer sledge for trailing movement therewith. The inner sledge is provided with a transversely extending cutting blade, a plurality of jet nozzles arranged along the cutting blade, and a longitudinally oriented duct. When the collector travels across the seafloor, the cutting blade cuts into the seafloor and raises it thereover. The water jets from the nozzles impinge upon the summit of the raised seafloor material so that nodules and sediments at the summit are carried away by the water jets and introduced through the duct into a collecting chamber provided in the outer sledge. The collecting chamber has a special design to prevent entrance of undesirably large sized nodules thereinto and residence of undesirably small sized nodules and sediments therein. The nodules collected in the collecting chamber are successively transported up to the mining ship for recovery.Type: GrantFiled: February 17, 1981Date of Patent: January 18, 1983Assignee: Director-General of Agency of Industrial Science & TechnologyInventors: Keiji Handa, Norio Yamakado