Patents by Inventor Nobutaka Okuyama

Nobutaka Okuyama 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: 20040244061
    Abstract: A first video receiver is controlled to interrupt live watching of a television broadcast program; and thereafter, a second video receiver installed in another location can be controlled to continue display of the program from the interrupted point in the program.
    Type: Application
    Filed: March 24, 2004
    Publication date: December 2, 2004
    Inventors: Nobutaka Okuyama, Satoshi Mio
  • Publication number: 20040183485
    Abstract: An electron beam trajectory controlling device includes a main deflection section having a first main coil and defining a first path and being configured to control a trajectory of an electron traveling along the first path. The main deflection section includes a first auxiliary coil provided proximate the first main coil. A minor deflection section is provided adjacent to the main deflection section and has a first minor coil that is coupled to the first auxiliary coil. The minor deflection section defines a second electron path that is aligned to the first path. The minor deflection section cooperates with the main deflection section to control the trajectory of the electron.
    Type: Application
    Filed: March 9, 2004
    Publication date: September 23, 2004
    Applicant: Hitachi, Ltd.
    Inventors: Soichi Sakurai, Hiroshi Jitsukata, Nobutaka Okuyama, Katsumi Hirota
  • Patent number: 6737818
    Abstract: An electron beam trajectory controlling device includes a main deflection section having a first main coil and defining a first path and being configured to control a trajectory of an electron traveling along the first path. The main deflection section includes a first auxiliary coil provided proximate the first main coil. A minor deflection section is provided adjacent to the main deflection section and has a first minor coil that is coupled to the first auxiliary coil. The minor deflection section defines a second electron path that is aligned to the first path. The minor deflection section cooperates with the main deflection section to control the trajectory of the electron.
    Type: Grant
    Filed: November 14, 2002
    Date of Patent: May 18, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Soichi Sakurai, Hiroshi Jitsukata, Nobutaka Okuyama, Katsumi Hirota
  • Publication number: 20030094910
    Abstract: An electron beam trajectory controlling device includes a main deflection section having a first main coil and defining a first path and being configured to control a trajectory of an electron traveling along the first path. The main deflection section includes a first auxiliary coil provided proximate the first main coil. A minor deflection section is provided adjacent to the main deflection section and has a first minor coil that is coupled to the first auxiliary coil. The minor deflection section defines a second electron path that is aligned to the first path. The minor deflection section cooperates with the main deflection section to control the trajectory of the electron.
    Type: Application
    Filed: November 14, 2002
    Publication date: May 22, 2003
    Applicant: Hitachi, Inc.
    Inventors: Soichi Sakurai, Hiroshi Jitsukata, Nobutaka Okuyama, Katsumi Hirota
  • Patent number: 6492783
    Abstract: Horizontal line misconvergences produced at screen upper and lower portions, among rasters displayed by side electron beams are corrected without producing degradation in vertical deflection sensitivity so much and changing horizontal trapezoidal distortion. In a deflection yoke provided with a top-and-bottom pair of saddle-type horizontal deflection coils and a right-and-left pair of saddle-type deflection coils and mounted to and used in a color cathode ray tube having an in-line arranged electron gun, a pair of sub-cores is provided from side to side or above and below on the electron gun side of the deflection yoke. At least one pair of correction coils is wound around each of the pair of sub-cores.
    Type: Grant
    Filed: July 20, 2001
    Date of Patent: December 10, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Souichi Sakurai, Nobuyuki Koganezawa, Nobutaka Okuyama, Takeshi Kaneki
  • Publication number: 20020101204
    Abstract: Horizontal line misconvergences produced at screen upper and lower portions, among rasters displayed by side electron beams are corrected without producing degradation in vertical deflection sensitivity so much and changing horizontal trapezoidal distortion.
    Type: Application
    Filed: July 20, 2001
    Publication date: August 1, 2002
    Inventors: Souichi Sakurai, Nobuyuki Koganezawa, Nobutaka Okuyama, Takeshi Kaneki
  • Patent number: 6166484
    Abstract: A deflection yoke for a CRT including a horizontal deflection coil having an axial length in an axial direction of the CRT in an installed position that is not less than 60 mm and not more than 80 mm, a vertical deflection coil having an axial length in an axial direction that ranges from 45 mm to 65 mm, and a core having an axial length in the axial direction that ranges from 25 mm to 45 mm. The subject deflection yoke prevents deterioration in horizontal and vertical deflection sensitivity in CRTs having a neck diameter that is greater than 22 mm and less than 26 mm with a deflection angle that ranges from 95 to 110 degrees. In an alternate embodiment a deflection yoke for a CRT including a horizontal deflection coil, a vertical deflection coil disposed outside of the horizontal deflection coil, and a core disposed outside of the vertical deflection coil wherein in an installed position of the yoke, an inner surface of the deflection yoke is circumscribed around a circle having a diameter of 56.
    Type: Grant
    Filed: July 29, 1998
    Date of Patent: December 26, 2000
    Assignees: Hitachi, Ltd., Hitachi Media Electronics Co., Ltd.
    Inventors: Nobutaka Okuyama, Kouji Fukuyama, Soichi Sakurai, Hiroshi Yoshioka, Masao Obara, Misao Ikeda, Takeshi Chiba
  • Patent number: 5701061
    Abstract: A cathode-ray tube apparatus capable of reducing a high frequency electric field radiated from the deflection yoke and the deflection and high voltage circuit to the outside of the cathode-ray tube apparatus. Mounted on the deflection yoke or on the cathode-ray tube are an induction coil for generating a pulse voltage opposite in polarity to a high pulse voltage applied to the h and an electric field cancellation electrode made of a conductive wire to which the opposite polarity pulse voltage is applied. When the opposite polarity pulse voltage is applied to the electric field cancellation electrode, the electric field cancellation electrode radiates an electric field opposite in polarity to the high frequency electric field radiated from the deflection yoke to the outside of the cathode-ray tube apparatus to reduce the intensity of the high frequency electric field.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: December 23, 1997
    Assignees: Hitachi, Ltd., Hitachi Mizusawa
    Inventors: Nobutaka Okuyama, Soichi Sakurai, Kouji Kitou, Hiroki Oguro, Isao Yoshimi, Masao Obara, Michitaka Ohsawa, Kouji Fukuma, Kazuo Majima, Yoshio Yoshiwara, Minoru Furuya
  • Patent number: 5668447
    Abstract: A color cathode-ray tube which includes a deflection yoke having a convergence correcting device and an electron gun provided to the deflection yoke for generating a multiplicity of electron beams.
    Type: Grant
    Filed: July 15, 1996
    Date of Patent: September 16, 1997
    Assignees: Hitachi, Ltd., Hitachi Media Electronics Co., Ltd.
    Inventors: Nobutaka Okuyama, Soichi Sakurai, Kooji Fukuma, Hiroshi Yoshioka, Masao Obara, Naoki Ito, Atsushi Takeyama, Yoshio Satoh
  • Patent number: 5548190
    Abstract: A color cathode-ray tube which includes a deflection yoke having a convergence correcting device and an electron gun provided to the deflection yoke for generating a multiplicity of electron beams.
    Type: Grant
    Filed: September 27, 1995
    Date of Patent: August 20, 1996
    Assignees: Hitachi, Ltd., Hitachi Media Electronics Co., Ltd.
    Inventors: Nobutaka Okuyama, Soichi Sakurai, Kooji Fukuma, Hiroshi Yoshioka, Masao Obara, Naoki Ito, Atsushi Takeyama, Yoshio Satoh
  • Patent number: 5523658
    Abstract: A deflection yoke device comprises a convergence correction circuit connected between a vertical deflection coil and correction coils. The convergence correction circuit includes a first, second and third impedance elements connected in parallel and at least two diodes. The diodes are connected in series in the same direction and respond to a vertical deflection current of the vertical deflection coil to regulate a current flowing through the correction coils to thereby correct the YH mis-convergence.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: June 4, 1996
    Assignee: Hitachi, Ltd.
    Inventors: Kouji Fukuma, Nobutaka Okuyama, Soichi Sakurai, Hiroshi Yoshioka, Yoshihiro Obara, Takahisa Mizuta
  • Patent number: 5498939
    Abstract: A deflection yoke attached to a color cathode ray tube forming multiple electron beams arranged in line, and in particular a deflection yoke having convergence correction apparatus. Circuit components such as a plurality of resistors, variable resistors, and diodes are connected in parallel with vertical deflection coils. A part of a vertical deflection current flowing through the vertical deflection coils is diverted to the circuit components. Furthermore, the amount of the diverted current is made adjustable so that it will differ between a former part of a vertical deflection period and a latter part thereof. As a result, horizontal line misconvergence at upper and lower ends of the screen can be completely corrected.
    Type: Grant
    Filed: January 9, 1995
    Date of Patent: March 12, 1996
    Assignees: Hitachi, Ltd., Hitachi Mizusawa Electronics Co., Ltd.
    Inventors: Kooji Fukuma, Soichi Sakurai, Nobutaka Okuyama, Yoshio Satoh, Yoshihiro Obara
  • Patent number: 5475287
    Abstract: A cathode-ray tube apparatus capable of reducing a high frequency electric field radiated from the deflection yoke and the deflection and high voltage circuit to the outside of the cathode-ray tube apparatus. Mounted on the deflection yoke or on the cathode-ray tube are an induction coil for generating a pulse voltage opposite in polarity to a high pulse voltage applied to the h and an electric field cancellation electrode made of a conductive wire to which the opposite polarity pulse voltage is applied. When the opposite polarity pulse voltage is applied to the electric field cancellation electrode, the electric field cancellation electrode radiates an electric field opposite in polarity to the high frequency electric field radiated from the deflection yoke to the outside of the cathode-ray tube apparatus to reduce the intensity of the high frequency electric field.
    Type: Grant
    Filed: March 5, 1993
    Date of Patent: December 12, 1995
    Assignees: Hitachi, Ltd., Hitachi Mizusawa Electronics Co., Ltd.
    Inventors: Nobutaka Okuyama, Soichi Sakurai, Kouji Kitou, Hiroki Oguro, Isao Yoshimi, Masao Obara, Michitaka Ohsawa, Kouji Fukuma, Kazuo Majima, Yoshio Yoshiwara, Minoru Furuya
  • Patent number: 5363022
    Abstract: A horizontal deflection circuit for a CRT supplies an exciting current in such a way that flyback voltages including both a positive voltage and a negative voltage as components are generated in horizontal deflection coils of a horizontal deflection yoke, respectively, during energizing the horizontal deflection yoke to provide a magnetic field for horizontal scans. A positive electric field of VLF and a negative electric field of VLF which are generated in the horizontal deflection yoke by the respective flyback voltages cancel each other to decrease a composite electric field of VLF emitted from the horizontal deflection yoke. This prevents unwanted radiation leaking to the outside of the a CRT display.
    Type: Grant
    Filed: March 5, 1993
    Date of Patent: November 8, 1994
    Assignee: Hitachi Ltd.
    Inventors: Kouji Kitou, Nobutaka Okuyama, Ikuya Arai, Yuji Sano
  • Patent number: 5317239
    Abstract: A deflection yoke having cancelling loop coils for reducing undesired portions of a horizontal deflection magnetic field generated by a deflection yoke body without mislanding. The cancelling loop coils generate a cancelling magnetic field which includes two peaks in a front region and a rear region of the deflection yoke body in which the undesired field portions exist, respectively. The peaks are opposite in direction to the horizontal magnetic field generated by the deflection yoke body, respectively, with same ratio to the deflection magnetic field, so that the undesired magnetic field portions are under-corrected in the front portion and over-corrected in the rear portion.
    Type: Grant
    Filed: January 15, 1993
    Date of Patent: May 31, 1994
    Assignees: Hitachi, Ltd., Hitachi Mizusawa Electronics Co., Ltd.
    Inventors: Hiroki Ohguro, Yoshio Yoshiwara, Minoru Furuya, Nobutaka Okuyama, Soichi Sakurai, Michitaka Ohsawa
  • Patent number: 5281938
    Abstract: A deflection system for a cathode-ray tube including a horizontal deflection core, a magnetic coil, and a vertical deflection coil toroidally wound on the magnetic core. The vertical deflection coil has a plurality of superimposed winding layers arranged with respect to a vertical axis of the deflection system with at least one of the layers of the vertical deflection coil being disposed asymmetrically with respect to the vertical axis or disposed symmetrically with respect to the vertical axis and having winding portions delimiting at least one gap along an extent thereof at a position other than the vertical axis. In this manner, an induced voltage in the at least one of the layers is substantially equal to an induced voltage in each of another of the layers at least in the region of the vertical axis, whereby ringing is substantially prevented.
    Type: Grant
    Filed: September 17, 1991
    Date of Patent: January 25, 1994
    Assignee: Hitachi, Ltd.
    Inventors: Nobutaka Okuyama, Souichi Sakurai, Masaki Nakahara, Michitaka Ohsawa, Ichiri Niitsu
  • Patent number: 5172035
    Abstract: A system for generating magnetic fields to converge a plurality of electron beams in a cathode-ray tube including at least one convergence yoke having a core with a ring-shaped outer periphery and a plurality of magnetic poles on an inner periphery thereof extending toward a neck part of the cathode-ray tube for forming magnetic paths therewith.
    Type: Grant
    Filed: February 12, 1991
    Date of Patent: December 15, 1992
    Assignees: Hitachi, Ltd., Hitachi Mizusawa Electronics Co., Ltd.
    Inventors: Soichi Sakurai, Masaki Nakahara, Takahisa Mizuta, Nobutaka Okuyama, Michitaka Ohsawa, Ichiro Niitsu
  • Patent number: 5086259
    Abstract: A convergence system for a cathode-ray tube having three detection magnetic pole pieces are disposed opposing to each other on both sides of a center beam for forming magnetic paths inside the neck part of a cathode-ray tube. A first convergence yoke is disposed outside the neck part of the cathode-ray tube for forming magnetic paths together with the magnetic pole pieces. A first coil is wound on a first convergence yoke to generate a magnetic field for correcting horizontal misconvergence between the center beam and a side beam on a side of the center beam. A second coil is wound on the first convergence yoke to generate a magnetic field for correcting horizontal misconvergence between the center beam and a side beam on the other side of the center beam. A third coil is wound on the first convergence yoke to generate a magnetic field for correcting vertical misconvergence between the center beam and both side beams.
    Type: Grant
    Filed: March 14, 1990
    Date of Patent: February 4, 1992
    Assignee: Hitachi, Ltd.
    Inventors: Soichi Sakurai, Masaki Nakahara, Takahisa Mizuta, Nobutaka Okuyama, Michitaka Ohsawa, Ichiro Niitsu
  • Patent number: 5070280
    Abstract: A ring magnetic sub-core having a plurality of protrusions inside is disposed adjacent to an electron gun side of a main magnetic core on which a horizontal deflection coil and a vertical deflection coil are wound, and an auxiliary vertical deflection coil connected with said vertical deflection coil is wound around said magnetic sub-core, thereby making it possible to have both improvement of convergence performance and reduction of barrel distortion be consistent with each other. Further, a convergence coil is wound around said magnetic sub-core so as to correct a transverse raster or a longitudinal raster.
    Type: Grant
    Filed: August 9, 1990
    Date of Patent: December 3, 1991
    Assignees: Hitachi, Ltd., Hitachi Mizusawa Elec. Co Ltd
    Inventors: Nobutaka Okuyama, Soichi Sakurai, Kouji Kitou, Michitaka Ohsawa, Ichiro Niitsu, Hiroshi Yoshioka, Atushi Takeyama, Masao Obara, Isao Yoshimi
  • Patent number: 5049847
    Abstract: At least two pairs of auxiliary coils are disposed externally on a deflection yoke at positions which are symmetric with respect to the central axis of a horizontal direction of said deflection yoke and which are separated from each other in the direction of the axis of a cathode ray tube. At least two pairs of auxiliary coils are respectively disposed in front of and at the back of the longitudinal center of a magnetic core. The auxiliary coils have a horizontal length which is longer than its another length. A horizontal deflecting current is supplied to the first pair of auxiliary coils in the direction in which unnecessary radiant magnetic fields generated in front of and at the back of the deflection yoke are suppressed, and a horizontal deflecting current is supplied to the second pair of auxiliary coils in the direction in which an unnecessary radiant magnetic field generated at the back of the deflection yoke is intensified.
    Type: Grant
    Filed: December 14, 1989
    Date of Patent: September 17, 1991
    Assignees: Hitachi, Ltd., Hitachi Mizusawa Electronics Co.
    Inventors: Nobutaka Okuyama, Soichi Sakurai, Masao Obara, Yosio Kikkawa, Michitaka Ohsawa