Patents by Inventor Koji Fujii

Koji Fujii 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: 7019563
    Abstract: A first control potential setting means (1) generates a first control potential (N2) which reverses the magnitude relationship with a second control potential (N3) when an input signal (IN) reaches the vicinity of a logical threshold value. A second control potential setting means (2) generates the second control potential (N3) which changes in the same direction as the input signal (IN), in accordance with a change in input signal (IN). An output means (3) includes transistors (Q5, Q6), and generates an output signal (OUT) having a predetermined potential on the basis of the first control potential (N2), the second control potential (N3), and a reset signal (RSET). A reset means (4) turns off the transistor (Q6) while a waveform shaping circuit is in operation.
    Type: Grant
    Filed: January 21, 2004
    Date of Patent: March 28, 2006
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Hiroki Morimura, Toshishige Shimamura, Koji Fujii, Satoshi Shigematsu, Yukio Okazaki, Katsuyuki Machida
  • Patent number: 6998572
    Abstract: A machining apparatus includes a light source (1) for generating light energy, an optical system (2, 3) for guiding the generated light energy to a joint position of a workpiece, a table (5a) on which the workpiece is mounted, and a heating device (5b) provided at the table for heating the workpiece. The machining apparatus, a machining method and production equipment using the machining apparatus allow the workpiece to be locally heated fast, which is applicable to soldering or the like.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: February 14, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Tadashi Endo, Masahiro Sato, Koji Fujii, Dokei Nagayasu, Mamoru Watanabe, Yasuhiro Goto, Hisahide Ishino, Kenshi Kotani, Hiroyuki Kuriaki, Takashi Shimizu
  • Publication number: 20050258877
    Abstract: A first control potential setting means (1) generates a first control potential (N2) which reverses the magnitude relationship with a second control potential (N3) when an input signal (IN) reaches the vicinity of a logical threshold value. A second control potential setting means (2) generates the second control potential (N3) which changes in the same direction as the input signal (IN), in accordance with a change in input signal (IN). An output means (3) includes transistors (Q5, Q6), and generates an output signal (OUT) having a predetermined potential on the basis of the first control potential (N2), the second control potential (N3), and a reset signal (RSET). A reset means (4) turns off the transistor (Q6) while a waveform shaping circuit is in operation.
    Type: Application
    Filed: January 21, 2004
    Publication date: November 24, 2005
    Applicant: Nippon Telegraph and Telephone Corporation
    Inventors: Hiroki Morimura, Toshishige Shimamura, Koji Fujii, Satoshi Shigematsu, Yukio Okazaki, Katsuyuki Machida
  • Publication number: 20050259502
    Abstract: A row decoding circuit (171) outputs a select signal to a row set in a row range setting unit (172) to select a select signal line (103), processing results from processing circuits (102) on this row are output to a data output line (104), and a row adder (106) adds processing results output to a data output line (104) of a column set in a column range selector (105).
    Type: Application
    Filed: February 13, 2004
    Publication date: November 24, 2005
    Inventors: Toshishige Shimamura, Hiroki Morimura, Koji Fujii, Satoshi Shigematsu, Katsuyuki Machida
  • Patent number: 6943489
    Abstract: The CRT device comprises a cold cathode electron gun that includes cathodes, a peripheral focusing electrode, and an accelerating electrode. The cathode has a structure in which an emitter electrode and a gate electrode are joined together with an insulating layer interposed therebetween. The electric potential difference from the emitter electrode is 60V for the gate electrode, 0V for the peripheral focusing electrode, and 4.6 kV for the accelerating electrode.
    Type: Grant
    Filed: April 25, 2003
    Date of Patent: September 13, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Takashi Itoh, Masahide Yamauchi, Koji Fujii
  • Patent number: 6943491
    Abstract: In a picture tube device with a field-emission cold cathode, including a plurality of electron-emitting cathodes, and a lead electrode provided with a plurality of apertures surrounding the plurality of electron-emitting cathodes respectively, a surface of the lead electrode has a curved shape that is convex in an electron emission direction. This makes it possible to obtain a high-resolution and high-performance picture tube device that has an excellent focus performance over an entire beam current.
    Type: Grant
    Filed: January 9, 2003
    Date of Patent: September 13, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masahide Yamauchi, Takashi Itoh, Koji Fujii
  • Publication number: 20050151230
    Abstract: A preventive film for a polarizer which comprises a non-oriented three-layer film comprising a polycarbonate film having a glass transition temperature or 100° C. or higher and, laminated on both surfaces thereof, a polybutylene terephthalate film: a releasable preventive film for a polarizing film which comprises the three-layer film and, applied on the surface of the polybutylene terephthalate film side, a silicon based releasing agent; and a polarizing plate preventive film for a polarizing film and the releasable preventive film for a polarizing film as uppermost surface layers of a polarizing film containing a polarizer. The preventive film for a polarizing film and the releasable preventive film for a polarizing film exhibit an extremely small double refraction and can be produced at a low cost, and the polarizing plate using these films allows the detection of optical defects with ease.
    Type: Application
    Filed: December 13, 2002
    Publication date: July 14, 2005
    Applicant: Toyo Kohan Co., Ltd.
    Inventors: Norimasa Maida, Koji Fujii, Go Fukui
  • Patent number: 6914373
    Abstract: A cathode ray tube according to the present invention include a cold cathode electron gun, the cold cathode electron gun including a cold cathode array for emitting electrons through field emission, a gate electrode for controlling the field emission, a first selective electrode provided around the cold cathode array and the gate electrode, and a second selective electrode opposing the first selective electrode, and the second selective electrode is adapted to have a lower potential than the gate electrode and the first selective electrode. In accordance with this configuration, the divergence of electron beams emitted from any positions in the cold cathode array can be converged uniformly upon removing electron beams emitted at a great emission angle. This allows the electron beams thereafter to be made narrower by an electrostatic lens. As a result, the present invention can provide a cathode ray tube capable of forming a high-resolution image.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: July 5, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Takashi Itoh, Masahide Yamauchi, Koji Fujii, Keisuke Koga, Toru Kawase
  • Publication number: 20050128613
    Abstract: A preventive film for a polarizer which comprises a non-oriented two-layer film comprising a polycarbonate film having a glass transition temperature of 100° C. or higher and, laminated on one surface thereof, a polyester him: a preventive film for a polarizer which comprises a non-oriented three-layer comprising a polycarbonate film having a glass transition temperature of 100° C. or higher and a polyester film laminated on one surface thereof and a polybutylene terephthalate film laminated on the other surface thereof and a polarizing pate which uses a polarizing film comprising a polarizer and two sheets of the above film adhered by heating with no use of an adhesive agent to both sides thereof. The preventive film exhibits an extremely small double refraction and is capable of being adhered directly to a polarizer through heating and the polarizing plate can be produced at a low cost.
    Type: Application
    Filed: December 13, 2002
    Publication date: June 16, 2005
    Applicant: Toyo Kohan Co.,Ltd.
    Inventors: Norimasa Maida, Koji Fujii, Go Fukui
  • Publication number: 20050036862
    Abstract: A semiconductor wafer transfer equipment transfers a number of semiconductor wafers 51 that are held in grooves 52 of carriers 53 in the erected state to boat 54 using first and second wafer elevators 22 and 23 equipped with comb-teeth member 31 and wafer grip and transfer unit 24, and first and second wafer elevators 22 and 23 provided corresponding to carriers 53 and boats 54 are equipped with position correction mechanism 30 which corrects the positions of comb-teeth openings 34 of comb shape members 32 and 33 provided to comb-teeth members 31 corresponding to semiconductor wafers 51 housed in grooves 52 of carriers 53.
    Type: Application
    Filed: June 23, 2004
    Publication date: February 17, 2005
    Inventors: Koji Fujii, Tomoaki Takeuchi
  • Publication number: 20040232857
    Abstract: A CRT device includes a cold cathode electron gun realizing high resolution in all current areas. A field emitter type cathode having a field emitter array and a gate electrode, a first grid electrode, and a second grid electrode constituting the electron gun are arranged in this order toward a phosphor screen. The potential Vgate of the gate electrode is higher as the beam current is larger. The potential Vg1 of the first grid electrode takes a fixed value smaller than the potential Vgate. As the beam current increases, electrons passing through the gate electrode are accelerated more and converged to a lesser degree, whereas the lens strength of the cathode lens formed by the gate electrode, the first grid electrode, and the second grid electrode is enhanced more. Therefore, the beam diameter at the main lens can be made uniform regardless of the amount of beam current.
    Type: Application
    Filed: March 9, 2004
    Publication date: November 25, 2004
    Inventors: Takashi Itoh, Masahide Yamauchi, Koji Fujii
  • Patent number: 6794822
    Abstract: A field emission electron source includes: a field emission array portion composed of an insulation layer with a plurality of apertures, which is formed on a substrate, an extraction electrode formed on the insulation layer, and a plurality of cathodes formed respectively on the substrate in the plurality of apertures; a cathode base for fixing the field emission array portion; and an electron lens portion composed of a plurality of electrode members having a function of accelerating and converging an electron beam emitted from the field emission array portion. An emission axis of the electron beam emitted from the field emission array portion has a predetermined angle with respect to an optical axis of the electron lens portion. Thus, the field emission array portion can be protected from impact caused by ions generated in the electron lens portion, thereby improving the life of a field emission electron source.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: September 21, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Keisuke Koga, Toru Kawase, Masahide Yamauchi, Koji Fujii, Takashi Itoh
  • Patent number: 6791061
    Abstract: An optical processing apparatus has high reliability and stable welding quality. In the processing apparatus, a semiconductor laser and an optical system are disposed to a flow path of processing gas. The gas protects the semiconductor laser and the optical system from moisture and dust while cooling them. In addition, the apparatus also leads the processing gas to flow through a holder of the optical system to increase cooling effect for the optical system and to improve an optical accuracy. The apparatus guides the processing gas along a surface of a cover glass inside a nozzle ejecting the processing gas to a workpiece, to prevent the surface of the cover glass from being damaged and stained. The processing gas is ejected in a direction coaxial with a direction of output light, so as to shield an area being processed.
    Type: Grant
    Filed: November 25, 2002
    Date of Patent: September 14, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Koji Fujii, Kazushige Hirasawa, Dokei Nagayasu, Makoto Ryudo
  • Publication number: 20040050905
    Abstract: A machining apparatus includes a light source (1) for generating light energy, an optical system (2, 3) for guiding the generated light energy to a joint position of a workpiece, a table (5a) on which the workpiece is mounted, and a heating device (5b) provided at the table for heating the workpiece. The machining apparatus, a machining method and production equipment using the machining apparatus allow the workpiece to be locally heated fast, which is applicable to soldering or the like.
    Type: Application
    Filed: June 10, 2003
    Publication date: March 18, 2004
    Inventors: Tadashi Endo, Masahiro Sato, Koji Fujii, Dokei Nagayasu, Mamoru Watanabe, Yasuhiro Goto, Hisahide Ishino, Kenshi Kotani, Hiroyuki Kuriaki, Takashi Shimizu
  • Publication number: 20040042640
    Abstract: An image processing apparatus includes an image correcting section. When an image of an object is input, the image correcting section performs correction processing for the input image including the object image and outputs the corrected image as an image required for authentication of the object. An image processing method is also disclosed.
    Type: Application
    Filed: August 27, 2002
    Publication date: March 4, 2004
    Inventors: Namiko Ikeda, Mamoru Nakanishi, Koji Fujii, Takahiro Hatano, Satoshi Shigematsu, Hiroki Morimura, Yukio Okazaki, Hakaru Kyuragi
  • Patent number: 6661166
    Abstract: A cathode includes emitter tips provided on a substrate, a gate electrode with an electric field formed between the gate electrode and the emitter tips, and terminals and leads for supplying voltages to the emitter tips and the gate electrode, respectively. A shield electrode further is provided between the cathode and a control electrode, and the shield electrode has a cylindrical projecting portion projecting toward the cathode, through which electron beams pass. The disturbance of an electric field by the leads influences the electron beams; however, this can be prevented by the projecting portion. Because of this, even if the size of the cathode is reduced, the distortion of an electron beam spot on a phosphor screen can be reduced. As a result, a cathode-ray tube with high resolution can be provided at a low cost.
    Type: Grant
    Filed: June 4, 2002
    Date of Patent: December 9, 2003
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masahide Yamauchi, Takashi Itoh, Koji Fujii, Keisuke Koga, Toru Kawase
  • Publication number: 20030214218
    Abstract: The CRT device comprises a cold cathode electron gun that includes cathodes, a peripheral focusing electrode, and an accelerating electrode. The cathode has a structure in which an emitter electrode and a gate electrode are joined together with an insulating layer interposed therebetween. The electric potential difference from the emitter electrode is 60V for the gate electrode, 0V for the peripheral focusing electrode, and 4.6 kV for the accelerating electrode.
    Type: Application
    Filed: April 25, 2003
    Publication date: November 20, 2003
    Inventors: Takashi Itoh, Masahide Yamauchi, Koji Fujii
  • Publication number: 20030132695
    Abstract: In a picture tube device with a field-emission cold cathode, including a plurality of electron-emitting cathodes, and a lead electrode provided with a plurality of apertures surrounding the plurality of electron-emitting cathodes respectively, a surface of the lead electrode has a curved shape that is convex in an electron emission direction. This makes it possible to obtain a high-resolution and high-performance picture tube device that has an excellent focus performance over an entire beam current.
    Type: Application
    Filed: January 9, 2003
    Publication date: July 17, 2003
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masahide Yamauchi, Takashi Itoh, Koji Fujii
  • Publication number: 20030133621
    Abstract: A parallel processing logic circuit for sensor signal processing includes sensors and processing units. The sensor and the processing unit are integrated in the same pixel and arranged in a matrix. The processing unit contains a logic structure that consists of a register and a combinational logic function to execute pixel-parallel processing, based on binary data for a sensor, other processing units, and itself. The combinational logic function performs only a predetermined logic function and its dual one exclusively, thereby sharing the circuit resource and reducing the size of the processing unit. The register focusing on compactness also contributes to the small unit.
    Type: Application
    Filed: July 29, 2002
    Publication date: July 17, 2003
    Inventors: Koji Fujii, Satoshi Shigematsu, Hiroki Morimura, Mamoru Nakanishi
  • Publication number: 20030132210
    Abstract: An optical processing apparatus has high reliability and stable welding quality. In the processing apparatus, a semiconductor laser and an optical system are disposed to a flow path of processing gas. The gas protects the semiconductor laser and the optical system from moisture and dust while cooling them. In addition, the apparatus also leads the processing gas to flow through a holder of the optical system to increase cooling effect for the optical system and to improve an optical accuracy. The apparatus guides the processing gas along a surface of a cover glass inside a nozzle ejecting the processing gas to a workpiece, to prevent the surface of the cover glass from being damaged and stained. The processing gas is ejected in a direction coaxial with a direction of output light, so as to shield an area being processed.
    Type: Application
    Filed: November 25, 2002
    Publication date: July 17, 2003
    Inventors: Koji Fujii, Kazushige Hirasawa, Dokei Nagayasu, Makoto Ryudo