Patents by Inventor Yasuhiro Nakahara

Yasuhiro Nakahara 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).

  • Publication number: 20120147327
    Abstract: A camera, which is removably mountable on an ophthalmologic photographing apparatus including an illumination optical system configured to illuminate a subject's eye with illumination light, includes an imaging unit configured to form an image from return light from the subject's eye through a photographing optical system in the ophthalmologic photographing apparatus, a development unit configured to develop a moving image or a still image of the subject's eye based on an output signal from the imaging unit with using a development parameter based on a wavelength range of the illumination light, and a display unit configured to display the moving image or the still image developed by the development unit.
    Type: Application
    Filed: August 24, 2010
    Publication date: June 14, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Masao Shikaumi, Motoya Takai, Yasuhiro Nakahara, Hiroki Uchida
  • Publication number: 20120081664
    Abstract: A fundus camera includes an illumination unit to illuminate an ocular fundus of a subject's eye, an autofluorescent exciter filter insertable into and retractable from an illumination optical path of the illumination unit, an observation and photographing unit to receive reflection light from the ocular fundus illuminated by the illumination unit and form an ocular fundus image, an autofluorescent barrier filter insertable into and retractable from an observation and photographing optical path, an image capturing unit to capture an ocular fundus image, and a calculation unit to calculate image data, wherein the calculation unit converts the ocular fundus image which is illuminated using the autofluorescent exciter filter and captured by a color image capturing unit as a color image, in a state that no autofluorescent barrier filter is inserted into the observation and photographing unit, into a monochromatic image from specific color data of each of the pixels.
    Type: Application
    Filed: December 8, 2011
    Publication date: April 5, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Toshiaki Okumura, Yasuhiro Dobashi, Yasuhiro Nakahara, Hiroshi Aoki
  • Publication number: 20120050670
    Abstract: An ophthalmic apparatus including an operation stick to adjust an optical unit, comprising: a rotary dial that is provided on a side surface of the operation stick and rotates with respect to the operation stick; a trigger arranged on a top of the operation stick while being decentered with respect to the operation stick; and a control unit adapted to control to perform one of movement and focusing of the optical unit with respect to an object in accordance with rotation of the rotary dial and perform control to cause the optical unit to start a predetermined operation in accordance with press of the trigger.
    Type: Application
    Filed: July 14, 2011
    Publication date: March 1, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yasuhiro Nakahara, Satoshi Aikawa
  • Patent number: 8092022
    Abstract: A fundus camera includes an illumination unit to illuminate an ocular fundus of a subject's eye, an autofluorescent exciter filter insertable into and retractable from an illumination optical path of the illumination unit, an observation and photographing unit to receive reflection light from the ocular fundus illuminated by the illumination unit and form an ocular fundus image, an autofluorescent barrier filter insertable into and retractable from an observation and photographing optical path, an image capturing unit to capture an ocular fundus image, and a calculation unit to calculate image data, wherein the calculation unit converts the ocular fundus image which is illuminated using the autofluorescent exciter filter and captured by a color image capturing unit as a color image, in a state that no autofluorescent barrier filter is inserted into the observation and photographing unit, into a monochromatic image from specific color data of each of the pixels.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: January 10, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshiaki Okumura, Yasuhiro Dobashi, Yasuhiro Nakahara, Hiroshi Aoki
  • Publication number: 20110170063
    Abstract: An ophthalmologic imaging apparatus that captures an image of a subject's eye is provided. The apparatus includes a focusing unit configured to focus light returned from the subject's eye that is illuminated by the light of a first wavelength, onto an imaging unit, and a moving unit configured to move the focusing unit based on an optical path length difference between the light of the first wavelength and the light of a second wavelength that is different from the first wavelength when light returned from the subject's eye that is illuminated by the light of the second wavelength is focused onto the imaging unit.
    Type: Application
    Filed: June 10, 2010
    Publication date: July 14, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Hideyuki Ooban, Yasuhiro Nakahara, Hiroshi Itoh
  • Publication number: 20110090457
    Abstract: A method of producing an ophthalmic imaging apparatus includes the steps of producing an imaging unit configured to capture an image of an image subject in visible light and infrared light; adjusting the color tone of the imaging unit using a color-tone adjustment unit having a first optical member configured to absorb infrared light; and connecting the adjusted imaging unit and an optical system having a second optical member whose characteristic is the same as a characteristic of the first optical member and configured to capture an optical image of an eye to be examined.
    Type: Application
    Filed: September 28, 2010
    Publication date: April 21, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Masao Shikaumi, Yasuhiro Nakahara
  • Publication number: 20100302506
    Abstract: A fundus camera includes an illumination unit to illuminate an ocular fundus of a subject's eye, an autofluorescent exciter filter insertable into and retractable from an illumination optical path of the illumination unit, an observation and photographing unit to receive reflection light from the ocular fundus illuminated by the illumination unit and form an ocular fundus image, an autofluorescent barrier filter insertable into and retractable from an observation and photographing optical path, an image capturing unit to capture an ocular fundus image, and a calculation unit to calculate image data, wherein the calculation unit converts the ocular fundus image which is illuminated using the autofluorescent exciter filter and captured by a color image capturing unit as a color image, in a state that no autofluorescent barrier filter is inserted into the observation and photographing unit, into a monochromatic image from specific color data of each of the pixels.
    Type: Application
    Filed: May 27, 2010
    Publication date: December 2, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Toshiaki Okumura, Yasuhiro Dobashi, Yasuhiro Nakahara, Hiroshi Aoki
  • Patent number: 7401248
    Abstract: A method for deciding a destination server among a plurality of servers to which applications are migrated upon occurrence of a failure on one of the servers is provided. The method includes the steps of obtaining required performance information of each of the applications when each of the plurality of servers is normally operating, obtaining furnishing performance information of each of the plurality of servers in operation, specifying at least one of the servers having a composition capable of running the applications migrated upon occurrence of a failure on one of the servers, comparing the required performance information and the furnishing performance information, and specifying one of the servers that has an application execution performance closest to an application execution performance on the server having the failure, and that meets a specified availability.
    Type: Grant
    Filed: November 4, 2004
    Date of Patent: July 15, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Yasuhiro Nakahara, Kunihisa Nitta
  • Publication number: 20070299892
    Abstract: An algebra operation method includes the steps of converting algebra operations for a plurality of objects which appear in a program into an algebra operation sequence object described using object access data used to access the plurality of objects and object state data used to store states associated with the plurality of objects without immediately evaluating the algebra operations, determining a function to be applied to the algebra operation sequence object, and evaluating the algebra operations by executing the function by designating an argument group required for the function in response to a call of a substitute operator.
    Type: Application
    Filed: June 7, 2007
    Publication date: December 27, 2007
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Yasuhiro Nakahara
  • Publication number: 20050193227
    Abstract: A method for deciding a destination server among a plurality of servers to which applications are migrated upon occurrence of a failure on one of the servers is provided. The method includes the steps of obtaining required performance information of each of the applications when each of the plurality of servers is normally operating, obtaining furnishing performance information of each of the plurality of servers in operation, specifying at least one of the servers having a composition capable of running the applications migrated upon occurrence of a failure on one of the servers, comparing the required performance information and the furnishing performance information, and specifying one of the servers that has an application execution performance closest to an application execution performance on the server having the failure, and that meets a specified availability.
    Type: Application
    Filed: November 4, 2004
    Publication date: September 1, 2005
    Inventors: Yasuhiro Nakahara, Kunihisa Nitta
  • Publication number: 20040030782
    Abstract: A computer system configuration having a minimum cost is decided automatically in a short time from the computer system configurations having necessary processing performance. The system configuration is expressed by four parameters (performance of CPU, number of CPUs, main memory capacity and I/O processing speed) and the four parameters with which the cost can be minimized are derived by utilizing the numerical analysis method using the method of undetermined multipliers of Lagrange or the like under predetermined constraints concerning a response time of transaction processing. On the other hand, the number of jobs which one CPU provided in the system can execute simultaneously is optimized. The system configuration in which the probability having the response time equal to or longer than A is equal to or lower than B and the cost is minimum is derived.
    Type: Application
    Filed: June 26, 2003
    Publication date: February 12, 2004
    Inventor: Yasuhiro Nakahara
  • Patent number: 6292158
    Abstract: A display system detects the orientation of the image display screen of a movable display device, the image display screen of which can be arbitrarily oriented, and outputs image data stored and related with the detected orientation of the image display screen to the movable display device, to display image corresponding to the image data. The display system changes the orientation of the image display screen stored and related with the image data according to change in the orientation of the image display screen of the movable display device, when the image data is output to the movable display device and a change signal is output.
    Type: Grant
    Filed: May 1, 1998
    Date of Patent: September 18, 2001
    Assignee: Shimadzu Corporation
    Inventors: Hisashi Amafuji, Ryutaro Nasu, Yasuhiko Handa, Keizou Kumai, Yasuhiro Nakahara
  • Patent number: 5021162
    Abstract: To form a gel bed in a cylindrical column for liquid chromatography, a gel bed section is provided between upper and lower liquid-tight partition members, positioned apart from each other at upper and lower positions in the column. Liquid is continuously percolated downward through the gel bed section to form a gel bed in the gel bed section and a liquid pressure is applied onto the upper partition to move the partition member downward following a downward movement of the upper surface of the gel bed.
    Type: Grant
    Filed: January 30, 1990
    Date of Patent: June 4, 1991
    Assignee: Tosoh Corporation
    Inventors: Kiyoaki Sakamoto, Kenichi Matsubara, Yasuhiro Nakahara, Masaki Nomura
  • Patent number: 4927531
    Abstract: To form a gel bed in a cylindrical column for liquid chromatography, a gel bed section is provided between upper and lower liquid-tight partition members, positioned apart from each other at upper and lower positions in the column. Liquid is continuously percolated downward through the gel bed section to form a gel bed in the gel bed section and a liquid pressure is applied onto the upper partition to move the partition member downward following a downward movement of the upper surface of the gel bed.
    Type: Grant
    Filed: February 27, 1989
    Date of Patent: May 22, 1990
    Assignee: Tosoh Corporation
    Inventors: Kiyoaki Sakamoto, Kenichi Matsubara, Yasuhiro Nakahara, Masaki Nomura
  • Patent number: 4755293
    Abstract: An elongate cylindrical column body has a flange at an open end and an annular extension extending beyond the flange in a direction of the length of the column body. The cover has a seal ring fitted therein for supporting a partition member. The seal ring is sized and shaped so that when the cover is placed on the open end of the column body, the seal ring and a guide face defined by the annular extension sealingly overlap one another by a predetermined length. Bolts passing through the flanges of the column body and cover are used to lock the cover onto the column body.
    Type: Grant
    Filed: July 27, 1987
    Date of Patent: July 5, 1988
    Assignee: Toyo Soda Manufacturing Co., Ltd.
    Inventors: Kiyoaki Sakamoto, Yasuhiro Nakahara
  • Patent number: 4174430
    Abstract: A porous polystyrene gel is produced by a suspension polymerization in an aqueous system under an incorporation of more than 5 mole % of a radical polymerization catalyst to a total amount of styrene and divinyl benzene with an inert organic solvent.
    Type: Grant
    Filed: July 24, 1978
    Date of Patent: November 13, 1979
    Assignee: Toyo Soda Manufacturing Co., Ltd.
    Inventors: Shiro Kido, Tetsuo Yokota, Yasuhiro Nakahara