Patents by Inventor Masashi Nakagawa

Masashi Nakagawa 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: 20060050827
    Abstract: An apparatus for performing a channel-to-channel delay correction and frame synchronization with low latency includes, on each of a plurality of channels, a clock-and-data recovery circuit for generating a data signal and a recovery clock signal; a frequency divider circuit for generating a frequency-divided clock of the recovery clock signal; a circuit for detecting the phase difference between the phase of the frequency-divided clock signal and the phase of a clock signal obtained by frequency-dividing a clock signal internal to the device and applying an adjustment so as to reduce the phase difference; a serial-to-parallel converter circuit for converting the data signal from the clock and data recovery circuit to parallel data; a register array for holding the parallel output of the serial-to-parallel converter circuit; and a frame-head detector for detecting a frame head from the output of the register array and outputting a frame detection signal.
    Type: Application
    Filed: September 6, 2005
    Publication date: March 9, 2006
    Applicant: NEC Electronics Corporation
    Inventors: Takanori Saeki, Minoru Nishizawa, Masashi Nakagawa, Hisakazu Nasu
  • Publication number: 20060044197
    Abstract: Rear glass is provided with a patch-like radiation conductor and a first ground conductor surrounding the patch-like radiation conductor. An electronic circuit unit includes a base plate fixed on the rear glass; a frame body which houses a circuit substrate and is fixed on the base plate; and a cover for covering the frame body. One surface of the circuit substrate defines a component-holding surface which is connected with a second end of a feeder cable connected with the radiation conductor and the first ground conductor. The other surface of the circuit substrate is provided with a second ground conductor to function as a radio-wave reflective surface. The radio-wave reflective surface faces the radiation conductor and the first ground conductor disposed on the rear glass such that the radio-wave reflective surface is separated from the radiation conductor and the first ground conductor by a predetermined distance.
    Type: Application
    Filed: June 23, 2005
    Publication date: March 2, 2006
    Inventors: Tomoki Ikeda, Naofumi Shiraishi, Masashi Nakagawa, Satoru Komatsu, Tomoyuki Fukumaru, Hideaki Oshima, Hiroshi Iijima
  • Publication number: 20050285988
    Abstract: An electro-optical device includes a substrate; thin film transistors provided on the substrate and including a semiconductor layer having a channel region thereon; display electrodes provided on the substrate and electrically connected to the thin film transistors; storage capacitors electrically connected to the display electrodes; an interlayer insulating layer deposited on at least one side of an upper layer side and a lower layer side of the semiconductor layer; and a light shielding layer deposited on a side of the interlayer insulating layer not facing the semiconductor layer to shield the channel region from light, in which concave portions locally pitted toward the semiconductor layer are formed on a surface of the interlayer insulating layer not facing the semiconductor layer, in a region where at least edge of the channel region out of the channel region can be shielded from light, and in which the light shielding layer is formed at least in the concave portion to act as a capacitor electrode of at
    Type: Application
    Filed: June 9, 2005
    Publication date: December 29, 2005
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Masashi Nakagawa
  • Publication number: 20050269121
    Abstract: A mounting structure of the on-vehicle electronic circuit unit according to the present invention includes a base plate fixed to a glass plate of an automobile, and a frame mounted on the base plate and surrounded by four side plates. Since recessed parts are provided on the both side of protrusions of the frame, the volume of the frame is reduced. Also, since the tapered portion having a small volume, which is the protruded side of the frame, is protruded to the inside of the automobile, the space of the inside of the automobile becomes enlarged and baggage can be loaded in the vicinity of the glass plate in the rearward of the automobile.
    Type: Application
    Filed: June 6, 2005
    Publication date: December 8, 2005
    Inventors: Tomoki Ikeda, Masashi Nakagawa, Norio Tanaka
  • Patent number: 6963726
    Abstract: First and second waveguides which have respective axes thereof arranged parallel to each other are respectively held by dielectric feeders. A projection wall or a thick wall is formed as a correction part on a front surface of a waterproof cover which covers radiation parts of the dielectric feeders. Due to such a constitution, when radio waves transmitted from neighboring first and second satellites are converged by a reflector and are incident on the inside of respective waveguides, it is possible to delay a phase of radio waves which pass the waterproof cover by the correction part (projection wall or thick wall) so that it is possible to adjust such that radiation patterns of radio waves which are incident on the respective waveguides are reflected on a common portion of the reflector whereby the required reflector can be miniaturized.
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: November 8, 2005
    Assignee: Alps Electric Co., Ltd.
    Inventors: Masashi Nakagawa, Kazutoyo Kajita
  • Publication number: 20050077495
    Abstract: An electrolytic solution for operating electrolytic capacitors which deteriorates extremely little in electrical properties even when used in a high-tension capacitor. The electrolytic solution comprises a compound expressed by general formula (1) below and a compound expressed by general formula (2) below or their salts: where each R is a same or different alkyl group, and R? is hydrogen, a methyl group or an ethyl group, and n is an integer of 0 to 14.
    Type: Application
    Filed: December 9, 2002
    Publication date: April 14, 2005
    Inventors: Noritaka Miyoshi, Masashi Nakagawa, Yasuyuki Yamagawa, Kazuhisa Takii
  • Patent number: 6778146
    Abstract: In a satellite broadcast reception converter, probes are equipped in a circular hole formed in a first circuit board, and plural fixing holes are formed around the circular hole. Snap pawls are formed at open ends of the waveguides formed of sheet metal. The respective snap pawls are inserted in the fixing holes of the first circuit board so as to project to the back surface side of the first circuit board, and the fixing holes of the short caps are snapped into the snap pawls. A dielectric feeder of synthetic resin supported on each waveguide has a first split body with radiation portion projected from the open end of each waveguide and a second split body having a phase converter fixed in the waveguide. The first and second split bodies are unified by inserting a projection equipped to the second split body into a through hole formed at the center of the first split body.
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: August 17, 2004
    Assignee: Alps Electric Co., Ltd.
    Inventors: Masashi Nakagawa, Kazuhiro Sasaki, Yuanzhu Dou
  • Patent number: 6717553
    Abstract: A primary radiator including a waveguide formed by winding a metallic plate into a cylindrical shape and superimposing both ends thereof at a joining portion. Two first flat portions and two second flat portions, extending in the direction of the central axis of the waveguide, are formed so that a first flat portion and a second flat portion alternate at intervals of substantially 90 degrees, thereby forming a total of four flat portions. A dielectric feeder includes a radiator section, an impedance converting section, and a phase converting section.
    Type: Grant
    Filed: May 6, 2002
    Date of Patent: April 6, 2004
    Assignee: Alps Electric Co., Ltd.
    Inventors: Kazuhiro Sasaki, Masashi Nakagawa, Yuanzhu Dou
  • Patent number: 6714166
    Abstract: Each of a first minute radiation pattern and a second minute radiation pattern is provided on a first circuit board so as to be inclined electrically by about 45° from the respective axial lines of a first probe for vertically polarized waves and a second probe for horizontally polarized waves. The first minute radiation pattern is approximately perpendicular to a phase conversion portion of a first dielectric feeder, and the second minute radiation pattern is approximately parallel with a phase conversion portion of a second dielectric feeder. The phase conversion portion of the first dielectric feeder is longer than that of the second dielectric feeder.
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: March 30, 2004
    Assignee: Alps Electric Co., Ltd.
    Inventors: Kazuhiro Sasaki, Masashi Nakagawa, Yuanzhu Dou
  • Patent number: 6697286
    Abstract: A driver circuit for outputting to a transmission line a differential signal occurring between a first output terminal and a second output terminal as transmit data, includes: a first circuit for outputting, when in-phase data is input at a first input terminal thereof, an output signal having a logic level which corresponds to the data to the first output terminal via a resistor; a second circuit for outputting, when opposite-phase data is input to a second input terminal thereof, an output signal having a logic level which corresponds to the data to the second output terminal via a resistor; and an adjusting resistor connected between the fist output terminal and the second output terminal. The resistor is connected between the first and second output terminals and the power supply or the ground respectively, so that an offset voltage of the differential signal can be set at a desired value.
    Type: Grant
    Filed: September 6, 2002
    Date of Patent: February 24, 2004
    Assignee: NEC Electronics Corporation
    Inventor: Masashi Nakagawa
  • Patent number: 6677910
    Abstract: A waveguide has a circuit board disposed therein so that the circuit board is orthogonal to the waveguide axis, and the circuit board has a first probe and a second probe formed thereon for respectively extracting the vertically and horizontally polarized waves, and has a fine radiation pattern also formed thereon which intersects each of the axes of the first and second probes at about 45 degrees. The fine radiation pattern is disposed in the vicinity of the waveguide axis and is formed by patterning in a rectangular shape that is asymmetrical relative to each of the axes of the two probes. This configuration allows the fine radiation pattern having a relatively small shape to prevent the electric field of these polarized waves in the waveguide from being disturbed, thereby leading to a reduction in reflection of these polarized waves at the fine radiator while the radiator achieves sufficient isolation between the vertically and horizontally polarized waves.
    Type: Grant
    Filed: March 5, 2002
    Date of Patent: January 13, 2004
    Assignee: Alps Electric Co., Ltd.
    Inventor: Masashi Nakagawa
  • Publication number: 20030072186
    Abstract: Provided is a driver circuit for outputting to a transmission line a differential signal occurring between a first output terminal and a second output terminal as transmit data, including: a first circuit for outputting, when in-phase data is input at a first input terminal thereof, an output signal having a logic level which corresponds to the data to the first output terminal via a resistor; a second circuit for outputting, when opposite-phase data is input to a second input terminal thereof, an output signal having a logic level which corresponds to the data to the second output terminal via a resistor; and an adjusting resistor connected between the first output terminal and the second output terminal, wherein a resistor is connected between the first and second output terminals and the power supply or the ground respectively, so that an offset voltage of the differential signal can be set at a desired value.
    Type: Application
    Filed: September 6, 2002
    Publication date: April 17, 2003
    Applicant: NEC CORPORATION
    Inventor: Masashi Nakagawa
  • Publication number: 20030068980
    Abstract: First and second waveguides which have respective axes thereof arranged parallel to each other are respectively held by dielectric feeders. A projection wall or a thick wall is formed as a correction part on a front surface of a waterproof cover which covers radiation parts of the dielectric feeders. Due to such a constitution, when radio waves transmitted from neighboring first and second satellites are converged by a reflector and are incident on the inside of respective waveguides, it is possible to delay a phase of radio waves which pass the waterproof cover by the correction part (projection wall or thick wall) so that it is possible to adjust such that radiation patterns of radio waves which are incident on the respective waveguides are reflected on a common portion of the reflector whereby the required reflector can be miniaturized.
    Type: Application
    Filed: September 20, 2002
    Publication date: April 10, 2003
    Applicant: Alps Electric Co., Ltd.
    Inventors: Masashi Nakagawa, Kazutoyo Kajita, Kazuhiro Sasaki, Yuanzhu Dou
  • Publication number: 20030058181
    Abstract: Each of a first minute radiation pattern and a second minute radiation pattern is provided on a first circuit board so as to be inclined electrically by about 45° from the respective axial lines of a first probe for vertically polarized waves and a second probe for horizontally polarized waves. The first minute radiation pattern is approximately perpendicular to a phase conversion portion of a first dielectric feeder, and the second minute radiation pattern is approximately parallel with a phase conversion portion of a second dielectric feeder. The phase conversion portion of the first dielectric feeder is longer than that of the second dielectric feeder.
    Type: Application
    Filed: September 20, 2002
    Publication date: March 27, 2003
    Applicant: Alps Electric Co., Ltd.
    Inventors: Kazuhiro Sasaki, Masashi Nakagawa, Yuanzhu Dou
  • Publication number: 20030058183
    Abstract: In a satellite broadcast reception converter, probes are equipped in a circular hole formed in a first circuit board, and plural fixing holes are formed around the circular hole. Snap pawls are formed at the open ends of the waveguides formed of sheet metal. The respective snap pawls are inserted in the fixing holes of the first circuit board so as to project to the back surface side of the first circuit board, and the fixing holes of the short caps are snapped into the snap pawls, whereby the first circuit board 6 is pinched and fixed between the waveguides and the short caps.
    Type: Application
    Filed: September 20, 2002
    Publication date: March 27, 2003
    Applicant: Alps Electric Co., Ltd.
    Inventors: Masashi Nakagawa, Kazuhiro Sasaki, Yuanzhu Dou
  • Publication number: 20020175778
    Abstract: A waveguide has a circuit board disposed therein so that the circuit board is orthogonal to the waveguide axis, and the circuit board has a first probe and a second probe formed thereon for respectively extracting the vertically and horizontally polarized waves, and has a fine radiation pattern also formed thereon which intersects each of the axes of the first and second probes at about 45 degrees. The fine radiation pattern is disposed in the vicinity of the waveguide axis and is formed by patterning in a rectangular shape that is asymmetrical relative to each of the axes of the two probes. This configuration allows the fine radiation pattern having a relatively small shape to prevent the electric field of these polarized waves in the waveguide from being disturbed, thereby leading to a reduction in reflection of these polarized waves at the fine radiator while the radiator achieves sufficient isolation between the vertically and horizontally polarized waves.
    Type: Application
    Filed: March 5, 2002
    Publication date: November 28, 2002
    Inventor: Masashi Nakagawa
  • Publication number: 20020167452
    Abstract: A primary radiator including a waveguide formed by winding a metallic plate into a cylindrical shape and superimposing both ends thereof at a joining portion. Two first flat portions and two second flat portions, extending in the direction of the central axis of the waveguide, are formed so that a first flat portion and a second flat portion alternate at intervals of substantially 90 degrees, thereby forming a total of four flat portions. A dielectric feeder includes a radiator section, an impedance converting section, and a phase converting section.
    Type: Application
    Filed: May 6, 2002
    Publication date: November 14, 2002
    Applicant: Alps Electric Co., Ltd.
    Inventors: Kazuhiro Sasaki, Masashi Nakagawa, Yuanzhu Dou
  • Patent number: 6404256
    Abstract: In a synchronous delay circuit including a first delay circuit array which is constituted of a plurality of cascade-connected delay circuit stages, and a second delay circuit array which is constituted of a plurality of cascade-connected delay circuit stages arranged to have a signal propagating direction opposite to that of the first delay circuit array. Each of the delay circuit stages of the first and second delay circuit arrays includes a CMOS inverter receiving an input signal. A P-channel MOS transistor of the CMOS inverter, a switching P-channel MOS transistor and an additional resistor are connected in series between a power supply line and an output node of the delay circuit stage. An N-channel MOS transistor of the CMOS inverter, a switching N-channel MOS transistor and another additional resistor are connected in series between the ground and the output node of the delay circuit stage.
    Type: Grant
    Filed: August 16, 1999
    Date of Patent: June 11, 2002
    Assignee: NEC Corporation
    Inventors: Koichiro Minami, Takanori Saeki, Masashi Nakagawa
  • Publication number: 20010054926
    Abstract: In a synchronous delay circuit including a first delay circuit array which is constituted of a plurality of cascade-connected delay circuit stages, and a second delay circuit array which is constituted of a plurality of cascade-connected delay circuit stages arranged to have a signal propagating direction opposite to that of the first delay circuit array. Each of the delay circuit stages of the first and second delay circuit arrays includes a CMOS inverter receiving an input signal. A P-channel MOS transistor of the CMOS inverter, a switching P-channel MOS transistor and an additional resistor are connected in series between a power supply line and an output node of the delay circuit stage. An N-channel MOS transistor of the CMOS inverter, a switching N-channel MOS transistor and another additional resistor are connected in series between the ground and the output node of the delay circuit stage.
    Type: Application
    Filed: August 16, 1999
    Publication date: December 27, 2001
    Inventors: KOICHIRO MINAMI, TAKANORI SAEKI, MASASHI NAKAGAWA
  • Patent number: 6265227
    Abstract: The invention relates to the development of a method for assaying an antigen which is associated with disorders caused by mental stress in a human body fluid by way of an immunoassay technique which utilizes an antibody against a mental stress related protein having the following properties or a fragment thereof: (1) having a molecular weight of about 14 kDa (measured by SDS-PAGE); and (2) having the N-terminal partial sequence represented by SEQ ID NO: 1; and a kit for diagnosing disorders caused by mental stress which contains the above-mentioned antibody or a fragment thereof. Thus, the accumulation of mental stress can be easily estimated and judged and the results can be applied to the diagnosis of disorders caused by mental stress.
    Type: Grant
    Filed: July 21, 1998
    Date of Patent: July 24, 2001
    Assignee: Suntory Limited
    Inventors: Takako Inui, Masashi Nakagawa, Yoshitake Terano, Mamiko Ozaki