Patents by Inventor Yohei Nagai

Yohei Nagai 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: 10318825
    Abstract: In a vehicle-mounted image recognition apparatus, a resolution of an image projected on an imaging plane of an image sensor is different at a position away from a center between a circumferential direction and a radial direction. To make a circumferential resolution higher than a radial resolution, at least a lower half of the imaging plane is located closer to a circumferential focus than a middle of a radial focus and the circumferential focus at a position off the optical axis center of the image projected on the image sensor through the image-forming optical system. This is achieved by adjusting the position of the imaging plane when manufacturing or by selecting a lens with high circumferential resolution. This apparatus improves recognition accuracy in recognizing traffic lanes without using an expensive lens exhibiting high resolution both in the circumferential direction and in the radial direction.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: June 11, 2019
    Assignees: NIDEC COPAL CORPORATION, NIDEC ELESYS CORPORATION
    Inventors: Yuta Nakamura, Yohei Nagai, Yushi Takehara, Naoya Takeda
  • Publication number: 20180060678
    Abstract: In a vehicle-mounted image recognition apparatus, a resolution of an image projected on an imaging plane of an image sensor is different at a position away from a center between a circumferential direction and a radial direction. To make a circumferential resolution higher than a radial resolution, at least a lower half of the imaging plane is located closer to a circumferential focus than a middle of a radial focus and the circumferential focus at a position off the optical axis center of the image projected on the image sensor through the image-forming optical system. This is achieved by adjusting the position of the imaging plane when manufacturing or by selecting a lens with high circumferential resolution. This apparatus improves recognition accuracy in recognizing traffic lanes without using an expensive lens exhibiting high resolution both in the circumferential direction and in the radial direction.
    Type: Application
    Filed: October 25, 2017
    Publication date: March 1, 2018
    Inventors: Yuta NAKAMURA, Yohei NAGAI, Yushi TAKEHARA, Naoya TAKEDA
  • Patent number: 9836659
    Abstract: In a vehicle-mounted image recognition apparatus, a resolution of an image projected on an imaging plane of an image sensor is different at a position away from a center between a circumferential direction and a radial direction. To make a circumferential resolution higher than a radial resolution, at least a lower half of the imaging plane is located closer to a circumferential focus than a middle of a radial focus and the circumferential focus at a position off the optical axis center of the image projected on the image sensor through the image-forming optical system. This is achieved by adjusting the position of the imaging plane when manufacturing or by selecting a lens with high circumferential resolution. This apparatus improves recognition accuracy in recognizing traffic lanes without using an expensive lens exhibiting high resolution both in the circumferential direction and in the radial direction.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: December 5, 2017
    Assignees: NIDEC COPAL CORPORATION, NIDEC ELESYS CORPORATION
    Inventors: Yuta Nakamura, Yohei Nagai, Yushi Takehara, Naoya Takeda
  • Patent number: 9407802
    Abstract: An imaging apparatus includes an image-forming optical system assembly, an image sensor, a sensor retaining portion that retains the image sensor, a coupling portion that is fixed to the image-forming optical system assembly, and a movement suppressing member that is immovable with respect to the coupling portion. The image-forming optical system assembly includes an optical system-side adhesive surface, the coupling portion includes an opposite surface, and the sensor retaining portion includes a sensor-side adhesive surface. A first adhesive is filled in at least a portion of a gap between the optical system-side adhesive surface and the sensor-side adhesive surface, and comes into contact with both of the optical system-side adhesive surface and the sensor-side adhesive surface. The movement suppressing member contacts the opposite surface, and contacts the sensor retaining portion on a surface facing the rear side out of surfaces of the sensor retaining portion.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: August 2, 2016
    Assignees: NIDEC COPAL CORPORATION, NIDEC ELESYS CORPORATION
    Inventors: Yuta Nakamura, Yohei Nagai, Yushi Takehara, Naoya Takeda
  • Publication number: 20160180178
    Abstract: In a vehicle-mounted image recognition apparatus, a resolution of an image projected on an imaging plane of an image sensor is different at a position away from a center between a circumferential direction and a radial direction. To make a circumferential resolution higher than a radial resolution, at least a lower half of the imaging plane is located closer to a circumferential focus than a middle of a radial focus and the circumferential focus at a position off the optical axis center of the image projected on the image sensor through the image-forming optical system. This is achieved by adjusting the position of the imaging plane when manufacturing or by selecting a lens with high circumferential resolution. This apparatus improves recognition accuracy in recognizing traffic lanes without using an expensive lens exhibiting high resolution both in the circumferential direction and in the radial direction.
    Type: Application
    Filed: October 14, 2015
    Publication date: June 23, 2016
    Inventors: Yuta NAKAMURA, Yohei NAGAI, Yushi TAKEHARA, Naoya TAKEDA
  • Publication number: 20160028929
    Abstract: An imaging apparatus includes an image-forming optical system assembly, an image sensor, a sensor retaining portion that retains the image sensor, a coupling portion that is fixed to the image-forming optical system assembly, and a movement suppressing member that is immovable with respect to the coupling portion. The image-forming optical system assembly includes an optical system-side adhesive surface, the coupling portion includes an opposite surface, and the sensor retaining portion includes a sensor-side adhesive surface. A first adhesive is filled in at least a portion of a gap between the optical system-side adhesive surface and the sensor-side adhesive surface, and comes into contact with both of the optical system-side adhesive surface and the sensor-side adhesive surface. The movement suppressing member contacts the opposite surface, and contacts the sensor retaining portion on a surface facing the rear side out of surfaces of the sensor retaining portion.
    Type: Application
    Filed: June 25, 2015
    Publication date: January 28, 2016
    Inventors: Yuta NAKAMURA, Yohei NAGAI, Yushi TAKEHARA, Naoya TAKEDA
  • Patent number: 4974485
    Abstract: In an electronic musical instrument of the waveshape memory type including at least one waveshape memory for storing and reproducing sample values of a musical sound wave to be generated, the waveshape memory stores the sample values of the complete waveshape of a musical tone with a shaped envelope.
    Type: Grant
    Filed: June 24, 1983
    Date of Patent: December 4, 1990
    Assignee: Yamaha Corporation
    Inventors: Yohei Nagai, Shimaji Okamoto
  • Patent number: 4967635
    Abstract: In an electronic musical instrument of the waveshape memory type including at least one waveshape memory for storing and reproducing sample values of a musical sound wave to be generated, the waveshape memory stores the sample values of the complete waveshape of a musical tone with a shaped envelope.
    Type: Grant
    Filed: April 26, 1988
    Date of Patent: November 6, 1990
    Assignee: Yamaha Corporation
    Inventors: Yohei Nagai, Shimaji Okamoto
  • Patent number: 4763553
    Abstract: In an electronic musical instrument of the waveshape memory type including at least one waveshape memory for storing and reproducing sample values of a musical sound wave to be generated, the waveshape memory stores the sample values of the complete waveshape of a musical tone with a shaped envelope.
    Type: Grant
    Filed: October 2, 1985
    Date of Patent: August 16, 1988
    Assignee: Nippon Gakki Seizo Kabushiki Kaisha
    Inventors: Yohei Nagai, Shimaji Okamoto
  • Patent number: 4704931
    Abstract: A keyboard musical instrument includes: a keyboard; an acoustic musical tone production mechanism for generating an acoustic musical tone; a tone generator for generating an electronic musical tone; a solenoid driver for inhibiting generation of the acoustic musical tone from the acoustic musical tone production mechanism; and an operation panel for designating a musical tone to be inhibited. When a player designates a musical tone to be inhibited via the operation panel in advance and then depresses a key on the keyboard, the generation of the acoustic musical tone is inhibited by means of the solenoid driver.
    Type: Grant
    Filed: June 16, 1986
    Date of Patent: November 10, 1987
    Assignee: Nippon Gakki Seizo Kabushiki Kaisha
    Inventors: Yohei Nagai, Yoshimasa Isozaki
  • Patent number: 4383462
    Abstract: In an electronic musical instrument of the waveshape memory type including at least one waveshape memory for storing and reproducing sample values of a musical sound wave to be generated, the waveshape memory stores the sample values of the complete waveshape of a musical tone with a shaped envelope.
    Type: Grant
    Filed: August 8, 1979
    Date of Patent: May 17, 1983
    Assignee: Nippon Gakki Seizo Kabushiki Kaisha
    Inventors: Yohei Nagai, Shimaji Okamoto
  • Patent number: 4351212
    Abstract: An electronic musical instrument comprises a note code producer for producing note codes respectively having n bits representing juxtaposed notes aligned by a semitone interval step. The note codes to be generated are selected from a binary code table consisting of successively aligned binary values corresponding to an order of alignment of the notes in a musical scale and the table omits either one of the largest and smallest values to be represented by the lowest m bits (n>m). A modified note code generator produces modified note codes by repetitively adding the lowest m bits of each note code to further lower order digits below the least significant bit of each note code, and a sound system generates musical tones having frequencies corresponding to the modified note codes.
    Type: Grant
    Filed: April 21, 1980
    Date of Patent: September 28, 1982
    Assignee: Nippon Gakki Seizo Kabushiki Kaisha
    Inventors: Shimaji Okamoto, Yohei Nagai
  • Patent number: 4301704
    Abstract: An electronic musical instrument generates musical tone signals by digitally executing the calculations of equations representing frequency modulation. The instrument comprises a keyboard information generating circuit for generating key information concerning depressed key numbers and key touch information concerning key operation, a plurality of system parameter generating circuits for providing parameter information in response to the outputs of a tone color selecting switch section, a plurality of system musical tone signal forming sections each for producing musical tone signals through the digital calculation of the FM equation in accordance with the abovementioned informations, and a musical tone generating section for producing musical tones by combining the musical tone signals provided by the musical tone signal forming sections, the musical tone signal forming sections calculating the FM equation by using different parameters provided by the parameter generating circuits.
    Type: Grant
    Filed: May 1, 1978
    Date of Patent: November 24, 1981
    Assignee: Nippon Gakki Seizo Kabushiki Kaisha
    Inventors: Yohei Nagai, Tetsuo Nishimoto, Shimaji Okamoto
  • Patent number: 4257303
    Abstract: An electronic musical instrument of a partials synthesis type and the partials are processed in a time division multiplex fashion. One cycle of the time division multiplex sequence consists of a plurality of processing time slots, which are divided into two to four groups. Each group of time slots are used for processing partials which form a discrete musical tone. Thus two to four types of musical tones can be formed at the same time, which realizes an ensemble performance.
    Type: Grant
    Filed: July 30, 1979
    Date of Patent: March 24, 1981
    Assignee: Nippon Gakki Seizo Kabushiki Kaisha
    Inventors: Yohei Nagai, Shimaji Okamoto
  • Patent number: 4138915
    Abstract: An electronic musical instrument of a waveshape memory type comprising: a plurality of waveshape memories for storing waveshapes of different tone color, and means for variably mixing the outputs of the plurality of waveshape memories for generating tone signals of varying tone color. The mixing ratio of the different waveshapes may be varied with the lapse of time or according to the touch of the key operation or to the tone pitch.
    Type: Grant
    Filed: March 2, 1977
    Date of Patent: February 13, 1979
    Assignee: Nippon Gakki Seizo Kabushiki Kaisha
    Inventors: Yohei Nagai, Shimaji Okamoto
  • Patent number: 4133242
    Abstract: A waveshape memory type electronic musical instrument produces a tone signal by cyclically reading wave value samples of a tone waveshape stored in a waveshape memory. The electronic musical instrument comprises a function generator for generating a periodic function signal which includes the mathematical product of an amplitude term varying as a function of time and a cyclic term of a selected frequency, and a multiplier for modulating a part of the tone waveshape by the periodic function signal, thereby producing a musical tone signal changing in waveshape as time lapses.
    Type: Grant
    Filed: March 2, 1977
    Date of Patent: January 9, 1979
    Assignee: Nippon Gakki Seizo Kabushiki Kaisha
    Inventors: Yohei Nagai, Shimaji Okamoto
  • Patent number: 3960044
    Abstract: A keyboard arrangement having an after-control signal detecting sensor means connected to electric circuitry to use the signal generated by this sensor means as an after-control signal for controlling various musical effects. This sensor means comprises a conductive flexible first electrode, a conductive second electrode, and a conductive elastic member, such as a conductive rubber, interposed between the first and second electrodes and adhered thereto, the conductive elastic member varying its resistance according to the degree by which it is compressed and deformed. With this arrangement, the resistance of the conductive elastic member will vary as it is compressed and/or deformed by playing keys in proportion to the positions of the depressed keys. This variation of resistance is employed so as to after-control the tone coloring, tone volume, vibrato, and other musical effects.
    Type: Grant
    Filed: October 17, 1974
    Date of Patent: June 1, 1976
    Assignee: Nippon Gakki Seizo Kabushiki Kaisha
    Inventors: Yohei Nagai, Kiyoshi Kawamura
  • Patent number: 3943812
    Abstract: A touch responsive sensor for an electronic keyboard musical instrument of a variable capacitor type, which comprises a pair of electrodes spaced apart from each other, and an intermediate electrode interposed between the pair of electrodes and separated from each of the pair of electrodes by a dielectric. The intermediate electrode is movable from near one of the pair of electrodes toward the other of the pair of electrodes in accordance with the movement of each playing key of the electronic musical instrument. Thus, in the course of a key depressing movement, first and second touch responsive controlling signals are derived from, respectively, between the one of the pair of electrodes and the intermediate electrode and between the other of the pair of electrodes and the intermediate electrode in accordance with the variation of capacitance produced therebetween.
    Type: Grant
    Filed: November 1, 1974
    Date of Patent: March 16, 1976
    Assignee: Nippon Gakki Seizo Kabushiki Kaisha
    Inventors: Yohei Nagai, Masatada Wachi
  • Patent number: D1024963
    Type: Grant
    Filed: August 10, 2022
    Date of Patent: April 30, 2024
    Assignee: EBARA CORPORATION
    Inventors: Akihiro Ochiai, Kazuma Nishimura, Yohei Oishi, Takahide Ozawa, Masayuki Nagai, Shin Takahashi, Yuhei Shinchi