Patents by Inventor Ikuo Ohtsuka

Ikuo Ohtsuka 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).

  • Patent number: 11988497
    Abstract: An optical unit includes an input portion configured to have measurement light having a wavelength extending from an ultraviolet region to a visible region input thereto, an optical system configured to condense the measurement light in a state where a chromatic aberration is caused to occur, and an opening portion configured not to image light having a wavelength in the visible region and to image light having a wavelength in the ultraviolet region of the measurement light having a chromatic aberration having occurred therein.
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: May 21, 2024
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Ikuo Arata, Satoshi Takimoto, Kenichi Ohtsuka
  • Patent number: 9275183
    Abstract: First and second pin groups are each formed from a plurality of pins associated with specific nets. Pins in the first pin group are to be wired to pins in the second pin group according to their associated nets. A candidate selection unit selects a set of pair candidates each specifying a first pair of pins in the first pin group and a second pair of pins in the second pin group. The first and second pairs of pins are associated with the same pair of nets, and their respective distances are within a specified range. A pair determination unit determines which pins in the first and second pin groups are to be wired in pairs, based on the pair candidates selected by the candidate selection unit.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: March 1, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Ikuo Ohtsuka, Toshiyasu Sakata
  • Patent number: 8930869
    Abstract: A wiring-design aiding method for causing a computer to execute generating paths for buses so that the buses do not cross each other with respect to a wiring area including at least one wiring layer, the paths being represented by corresponding graphics The computer further executes verifying, for each bus, whether wires for nets belonging to the bus are successfully extracted from a component to which the bus is connected; and recording, in the wiring area, graphics representing the nets belonging to a bus for which it is determined in the verification that all the nets belonging to the bus are successfully extracted. The bus-path generation is re-executed with respect to the bus for which it is determined in the verification that at least one of the nets is not successfully extracted.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: January 6, 2015
    Assignee: Fujitsu Limited
    Inventors: Ikuo Ohtsuka, Eiichi Konno, Takahiko Orita, Yoshitaka Nishio, Toshiyasu Sakata
  • Publication number: 20140325469
    Abstract: First and second pin groups are each formed from a plurality of pins associated with specific nets. Pins in the first pin group are to be wired to pins in the second pin group according to their associated nets. A candidate selection unit selects a set of pair candidates each specifying a first pair of pins in the first pin group and a second pair of pins in the second pin group. The first and second pairs of pins are associated with the same pair of nets, and their respective distances are within a specified range. A pair determination unit determines which pins in the first and second pin groups are to be wired in pairs, based on the pair candidates selected by the candidate selection unit.
    Type: Application
    Filed: July 8, 2014
    Publication date: October 30, 2014
    Inventors: Ikuo OHTSUKA, Toshiyasu SAKATA
  • Patent number: 8832630
    Abstract: First and second pin groups are each formed from a plurality of pins associated with specific nets. Pins in the first pin group are to be wired to pins in the second pin group according to their associated nets. A candidate selection unit selects a set of pair candidates each specifying a first pair of pins in the first pin group and a second pair of pins in the second pin group. The first and second pairs of pins are associated with the same pair of nets, and their respective distances are within a specified range. A pair determination unit determines which pins in the first and second pin groups are to be wired in pairs, based on the pair candidates selected by the candidate selection unit.
    Type: Grant
    Filed: July 23, 2012
    Date of Patent: September 9, 2014
    Assignee: Fujitsu Limited
    Inventors: Ikuo Ohtsuka, Toshiyasu Sakata
  • Patent number: 8762910
    Abstract: A wiring design method and apparatus are provided. The wiring design method includes dividing a wiring region represented by wiring region data to generate a plurality of first division regions based on a first wiring rule and generating, when a second wiring rule different from the first wiring rule may be set in the first division region, second division regions with the second wiring rule in the first division region.
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: June 24, 2014
    Assignee: Fujitsu Limited
    Inventor: Ikuo Ohtsuka
  • Patent number: 8667447
    Abstract: A wiring design apparatus for designing a plurality of wiring lines of a printed circuit board including a plurality of connection posts arranged in a matrix, includes a processor, the processor providing an orthogonal grid including a plurality of rows and columns running over and between the connection posts, providing a plurality of diagonal paths each connecting at least one of the rows with at least one of the columns each running between each of adjacent pairs of the connection posts, and determining a route for each of the wiring lines by exclusively allocating to each of the wiring lines a selected part of the rows, the columns and the paths so that the selected part connects both ends of each of the wiring lines.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: March 4, 2014
    Assignee: Fujitsu Limited
    Inventors: Ikuo Ohtsuka, Takao Yamaguchi, Eiichi Konno, Toshiyasu Sakata, Takahiko Orita
  • Patent number: 8443333
    Abstract: A non-transitory computer-readable recording medium storing a design supporting program causes a computer to perform: acquiring non-complying line lengths of a plurality of wiring paths; drawing for each of the wiring paths a wiring pattern connecting a transmission origin and a transmission destination based on a line length and a wiring route of the wiring path; and controlling the drawing to draw a line for each of the wiring paths, the line being divided into a first line amounting to a non-complying line length acquired at the acquiring and a second line being a wiring pass less the non-complying line length.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: May 14, 2013
    Assignee: Fujitsu Limited
    Inventors: Takahiko Orita, Kazunori Kumagai, Yoshitaka Nishio, Ikuo Ohtsuka, Motoyuki Tanisho
  • Patent number: 8402413
    Abstract: A wiring design apparatus for designing a plurality of wiring lines of a printed circuit board including a plurality of connection posts arranged in a matrix, includes a processor, the processor providing an orthogonal grid including a plurality of rows and columns running over and between the connection posts, providing a plurality of diagonal paths each connecting at least one of the rows with at least one of the columns each running between each of adjacent pairs of the connection posts, and determining a route for each of the wiring lines by exclusively allocating to each of the wiring lines a selected part of the rows, the columns and the paths so that the selected part connects both ends of each of the wiring lines.
    Type: Grant
    Filed: March 11, 2010
    Date of Patent: March 19, 2013
    Assignee: Fujitsu Limited
    Inventors: Ikuo Ohtsuka, Takao Yamaguchi, Eiichi Konno, Toshiyasu Sakata, Takahiko Orita
  • Patent number: 8402414
    Abstract: A computer-readable, non-transitory medium stores therein a design support program that causes a computer executing tentative wiring processing between a first terminal group and a second terminal group in a tentative wiring area to execute a process. The process includes detecting unwired nets occurring in the tentative wiring area consequent to the tentative wiring processing; updating the tentative wiring area by expanding the tentative wiring area according to the number of unwired nets, if any unwired nets are detected at the detecting; controlling to execute the tentative wiring processing and the subsequent detecting with respect to the tentative wiring area updated at the updating; and determining the tentative wiring area to be a wiring area if no unwired nets are detected at the detecting.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: March 19, 2013
    Assignee: Fujitsu Limited
    Inventors: Motoyuki Tanisho, Toshiyasu Sakata, Yoshitaka Nishio, Ikuo Ohtsuka, Kazunori Kumagai
  • Publication number: 20130031525
    Abstract: First and second pin groups are each formed from a plurality of pins associated with specific nets. Pins in the first pin group are to be wired to pins in the second pin group according to their associated nets. A candidate selection unit selects a set of pair candidates each specifying a first pair of pins in the first pin group and a second pair of pins in the second pin group. The first and second pairs of pins are associated with the same pair of nets, and their respective distances are within a specified range. A pair determination unit determines which pins in the first and second pin groups are to be wired in pairs, based on the pair candidates selected by the candidate selection unit.
    Type: Application
    Filed: July 23, 2012
    Publication date: January 31, 2013
    Applicant: FUJITSU LIMITED
    Inventors: Ikuo OHTSUKA, Toshiyasu SAKATA
  • Publication number: 20110246955
    Abstract: A wiring-design aiding method for causing a computer to execute generating paths for buses so that the buses do not cross each other with respect to a wiring area including at least one wiring layer, the paths being represented by corresponding graphics The computer further executes verifying, for each bus, whether wires for nets belonging to the bus are successfully extracted from a component to which the bus is connected; and recording, in the wiring area, graphics representing the nets belonging to a bus for which it is determined in the verification that all the nets belonging to the bus are successfully extracted. The bus-path generation is re-executed with respect to the bus for which it is determined in the verification that at least one of the nets is not successfully extracted.
    Type: Application
    Filed: March 30, 2011
    Publication date: October 6, 2011
    Applicant: FUJITSU LIMITED
    Inventors: Ikuo OHTSUKA, Eiichi Konno, Takahiko Orita, Yoshitaka Nishio, Toshiyasu Sakata
  • Publication number: 20110231810
    Abstract: A computer-readable, non-transitory medium stores therein a design support program that causes a computer executing tentative wiring processing between a first terminal group and a second terminal group in a tentative wiring area to execute a process. The process includes detecting unwired nets occurring in the tentative wiring area consequent to the tentative wiring processing; updating the tentative wiring area by expanding the tentative wiring area according to the number of unwired nets, if any unwired nets are detected at the detecting; controlling to execute the tentative wiring processing and the subsequent detecting with respect to the tentative wiring area updated at the updating; and determining the tentative wiring area to be a wiring area if no unwired nets are detected at the detecting.
    Type: Application
    Filed: February 24, 2011
    Publication date: September 22, 2011
    Applicant: FUJITSU LIMITED
    Inventors: Motoyuki TANISHO, Toshiyasu SAKATA, Yoshitaka NISHIO, Ikuo OHTSUKA, Kazunori KUMAGAI
  • Publication number: 20110225561
    Abstract: A non-transitory computer-readable recording medium storing a design supporting program causes a computer to perform: acquiring non-complying line lengths of a plurality of wiring paths; drawing for each of the wiring paths a wiring pattern connecting a transmission origin and a transmission destination based on a line length and a wiring route of the wiring path; and controlling the drawing to draw a line for each of the wiring paths, the line being divided into a first line amounting to a non-complying line length acquired at the acquiring and a second line being a wiring pass less the non-complying line length.
    Type: Application
    Filed: March 9, 2011
    Publication date: September 15, 2011
    Applicant: FUJITSU LIMITED
    Inventors: Takahiko ORITA, Kazunori KUMAGAI, Yoshitaka NISHIO, Ikuo OHTSUKA, Motoyuki TANISHO
  • Publication number: 20110093829
    Abstract: A non-transitory, computer-readable recording medium stores therein a design support program that causes a computer to execute selecting a wiring path whose line length is greatest among a plurality of wiring paths making up a wiring group leading from a transmission origin to a transmission destination; detecting insufficient line lengths of the wiring paths not selected, insufficiency being determined with respect to the line length of the selected wiring path; calculating the area of insufficiency according to a sum of the detected insufficient line lengths; allocating to a vicinity of the wiring group, a line length adjustment region corresponding to a sum of the areas of insufficiency calculated at calculating; and controlling a display screen to display the wiring group and the allocated line length adjustment region.
    Type: Application
    Filed: October 14, 2010
    Publication date: April 21, 2011
    Applicant: FUJITSU LIMITED
    Inventors: Takahiko Orita, Kazunori Kumagai, Yoshitaka Nishio, Ikuo Ohtsuka, Motoyuki Tanisho
  • Publication number: 20100235804
    Abstract: A wiring design apparatus for designing a plurality of wiring lines of a printed circuit board including a plurality of connection posts arranged in a matrix, includes a processor, the processor providing an orthogonal grid including a plurality of rows and columns running over and between the connection posts, providing a plurality of diagonal paths each connecting at least one of the rows with at least one of the columns each running between each of adjacent pairs of the connection posts, and determining a route for each of the wiring lines by exclusively allocating to each of the wiring lines a selected part of the rows, the columns and the paths so that the selected part connects both ends of each of the wiring lines.
    Type: Application
    Filed: March 11, 2010
    Publication date: September 16, 2010
    Applicant: FUJITSU LIMITED
    Inventors: Ikuo OHTSUKA, Takao YAMAGUCHI, Eiichi KONNO, Toshiyasu SAKATA, Takahiko ORITA
  • Patent number: 7765510
    Abstract: A wiring design device for an integrated circuit has been disclosed, which is capable of easily changing a via to a redundant via in a route for which search has been completed but which has been found to be changed after the design has advanced and of easily obtaining an optimum solution of a route even if the via is changed to the redundant via.
    Type: Grant
    Filed: January 31, 2008
    Date of Patent: July 27, 2010
    Assignee: Fujitsu Microelectronics Limited
    Inventor: Ikuo Ohtsuka
  • Publication number: 20100100862
    Abstract: A wiring design method and apparatus are provided. The wiring design method includes dividing a wiring region represented by wiring region data to generate a plurality of first division regions based on a first wiring rule and generating, when a second wiring rule different from the first wiring rule may be set in the first division region, second division regions with the second wiring rule in the first division region.
    Type: Application
    Filed: October 15, 2009
    Publication date: April 22, 2010
    Applicant: FUJITSU LIMITED
    Inventor: Ikuo OHTSUKA
  • Publication number: 20080209384
    Abstract: A wiring design device for an integrated circuit has been disclosed, which is capable of easily changing a via to a redundant via in a route for which search has been completed but which has been found to be changed after the design has advanced and of easily obtaining an optimum solution of a route even if the via is changed to the redundant via.
    Type: Application
    Filed: January 31, 2008
    Publication date: August 28, 2008
    Applicant: FUJITSU LIMITED
    Inventor: Ikuo Ohtsuka