Patents by Inventor Hiroshi Kondoh
Hiroshi Kondoh 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).
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Publication number: 20060284180Abstract: There is provided a semiconductor device able to increase the mobility of carriers and reduce the current in the OFF state. The semiconductor device includes a gate electrode, an insulating layer on the gate electrode, a first electrode on the insulating layer, a second electrode on the insulating layer at an interval with the first electrode, an organic semiconductor layer disposed in the interval between the first electrode and the second electrode and covering at least part of the first electrode and the second electrode, and a first resistance layer formed on the organic semiconductor layer and having an electrical resistance lower than that of the organic semiconductor layer. The first resistance layer is formed from conductive polymers.Type: ApplicationFiled: August 25, 2006Publication date: December 21, 2006Inventor: Hiroshi Kondoh
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Patent number: 7132976Abstract: An automotive radar which can process signals at high speed to detect a target in a wide angle range is provided. The automotive radar comprises a transmitting antenna which emits an electromagnetic wave, two receiving antennas which receive the electromagnetic wave reflected by a target, an antenna plate on which the transmitting antenna and two receiving antennas are arranged. It also includes a drive which rotates the antenna plate in an azimuth direction, which corresponds to the direction of arrangement of the two receiving antennas, to scan a detection angle formed by the two receiving antennas. The drive has rest time between scans to stop rotation. The automotive radar also includes a signal processor which detects the azimuth angle of the target with respect to a reference direction during the rest time according to received signals from the two receiving antennas and the rotation angle of the antenna plate at rest.Type: GrantFiled: August 19, 2005Date of Patent: November 7, 2006Assignee: Hitachi, Ltd.Inventors: Hiroshi Shinoda, Toshiyuki Nagasaku, Hiroshi Kondoh
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Publication number: 20060243971Abstract: An organic transistor is capable of emitting light at high luminescence efficiency, operating at high speed, handling large electric power, and can be manufactured at low cost. The organic transistor includes an organic semiconductor layer between a source electrode and a drain electrode, and gate electrodes shaped like a comb or a mesh, which are provided at intervals approximately in the central part of the organic semiconductor layer approximately parallel to the source electrode and the drain electrode. The organic semiconductor layer consists of an electric field luminescent organic semiconductor material such as compounds of naphthalene, anthracene, tetracene, pentacene, hexacene, a phthalocyanine system compound, an azo system compound, a perylene system compound, a triphenylmethane compound, a stilbene compound, poly N-vinyl carbazole, and poly vinyl pyrene.Type: ApplicationFiled: June 21, 2006Publication date: November 2, 2006Inventors: Hiroyuki Iechi, Yoshikazu Akiyama, Hiroshi Kondoh, Takanori Tano
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Patent number: 7126153Abstract: An organic transistor is capable of emitting light at high luminescence efficiency, operating at high speed, handling large electric power, and can be manufactured at low cost. The organic transistor includes an organic semiconductor layer between a source electrode and a drain electrode, and gate electrodes shaped like a comb or a mesh, which are provided at intervals approximately in the central part of the organic semiconductor layer approximately parallel to the source electrode and the drain electrode. The organic semiconductor layer consists of an electric field luminescent organic semiconductor material such as compounds of naphthalene, anthracene, tetracene, pentacene, hexacene, a phthalocyanine system compound, an azo system compound, a perylene system compound, a triphenylmethane compound, a stilbene compound, poly N-vinyl carbazole, and poly vinyl pyrene.Type: GrantFiled: December 16, 2002Date of Patent: October 24, 2006Assignee: Ricoh Company, Ltd.Inventors: Hiroyuki Iechi, Yoshikazu Akiyama, Hiroshi Kondoh, Takanori Tano
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Patent number: 7119366Abstract: There is provided a semiconductor device able to increase the mobility of carriers and reduce the current in the OFF state. The semiconductor device includes a gate electrode, an insulating layer on the gate electrode, a first electrode on the insulating layer, a second electrode on the insulating layer at an interval with the first electrode, an organic semiconductor layer disposed in the interval between the first electrode and the second electrode and covering at least part of the first electrode and the second electrode, and a first resistance layer formed on the organic semiconductor layer and having an electrical resistance lower than that of the organic semiconductor layer. The first resistance layer is formed from conductive polymers.Type: GrantFiled: July 15, 2003Date of Patent: October 10, 2006Assignee: Ricoh Company, Ltd.Inventor: Hiroshi Kondoh
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Patent number: 7084761Abstract: There is provided a device in which surroundings of a building can be monitored using a sensor; when detecting an intruder, an object can be detected even in the case of bad weather; and a predetermined area can be monitored using as few sensors as possible. The device includes a security system which emits a radio wave from a building to a predetermined area outside the building to detect an object, and on the basis of output of the object detecting unit, a judgment is made as to whether or not the object will intrude into the predetermined area.Type: GrantFiled: August 23, 2002Date of Patent: August 1, 2006Assignee: Hitachi, Ltd.Inventors: Shiho Izumi, Hiroshi Kuroda, Satoru Kuragaki, Kazuhiko Sato, Terumi Nakazawa, Kenichi Mitzuishi, Kazuaki Takano, Mitsuhide Sasaki, Hiroshi Kondoh, Mikito Tsubota
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Publication number: 20060158369Abstract: An automotive radar which can process signals at high speed to detect a target in a wide angle range is provided. The automotive radar comprises a transmitting antenna which emits an electromagnetic wave, two receiving antennas which receive the electromagnetic wave reflected by a target, an antenna plate on which the transmitting antenna and two receiving antennas are arranged. It also includes a drive which rotates the antenna plate in an azimuth direction, which corresponds to the direction of arrangement of the two receiving antennas, to scan a detection angle formed by the two receiving antennas. The drive has rest time between scans to stop rotation. The automotive radar also includes a signal processor which detects the azimuth angle of the target with respect to a reference direction during the rest time according to received signals from the two receiving antennas and the rotation angle of the antenna plate at rest.Type: ApplicationFiled: August 19, 2005Publication date: July 20, 2006Inventors: Hiroshi Shinoda, Toshiyuki Nagasaku, Hiroshi Kondoh
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Publication number: 20060139206Abstract: There is provided a highly accurate velocity sensor having a reduced detection error. A sensor circuit unit generates an electromagnetic wave and emits it from a transmission antenna. Furthermore, a reception antenna receives a reflection wave from the ground and a mixer mixes it with a local signal, thereby generating a low-frequency signal. The electromagnetic wave emitted from the sensor circuit unit shapes a beam by a dielectric lens before emitting it toward the ground. Here, the beam shape is such that the beam width in the vicinity of the sensor is smaller than the beam width in the vicinity of the ground.Type: ApplicationFiled: August 19, 2005Publication date: June 29, 2006Inventors: Toshiyuki Nagasaku, Hiroshi Kondoh, Hiroshi Shinoda
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Publication number: 20060055585Abstract: There is provided a radar system for improving distance resolution while preventing generation of ghost by an object located in the outside of the effective distance for detection. In this radar system, the signal generated by a voltage-controlled oscillator is transmitted only for the predetermined period by turning ON a switch only for the predetermined time length t1 with an interval of the predetermined period t2. Moreover, the time for detecting the receiving signal is limited to the predetermined period t3 (=t1) from the timing of transmission of the transmitting signal and the reflection signal from the object located in the outside of the effective distance is eliminated by limiting a local signal inputted to a mixer to the period t1.Type: ApplicationFiled: January 3, 2005Publication date: March 16, 2006Inventors: Toshiyuki Nagasaku, Hiroshi Kondoh
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Patent number: 6933881Abstract: An automotive radar having a high level of azimuth accuracy and a broad detectable range by virtue of preventing leaks of unnecessary waves to receiving antennas is to be provided. A transmitting array antenna 1 and receiving array antennas 2a, 2b are arranged on an antenna plate (grounding conductor plate) 3 which serves to ground the antennas, and radio wave absorbers 4 are arranged on two sides of the edges 15 of the antenna plate 3. The radio wave absorbers 4 may be configured of, for instance, a sponge material containing radio wave absorbing grains.Type: GrantFiled: July 15, 2003Date of Patent: August 23, 2005Assignee: Hitachi, Ltd.Inventors: Hiroshi Shinoda, Hiroshi Kondoh, Shiho Izumi
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Publication number: 20050128134Abstract: An automotive radar having a high level of azimuth accuracy and a broad detectable range by virtue of preventing leaks of unnecessary waves to receiving antennas is to be provided. A transmitting array antenna 1 and receiving array antennas 2a, 2b are arranged on an antenna plate (grounding conductor plate) 3 which serves to ground the antennas, and radio wave absorbers 4 are arranged on two sides of the edges 15 of the antenna plate 3. The radio wave absorbers 4 may be configured of, for instance, a sponge material containing radio wave absorbing grains.Type: ApplicationFiled: January 31, 2005Publication date: June 16, 2005Inventors: Hiroshi Shinoda, Hiroshi Kondoh, Shiho Izumi
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Publication number: 20050128081Abstract: In a position detecting system using a radar which transmits/receives a microwave or a millimeterwave, the area to be monitored is surrounded by a plurality of reflectors, and the coordinate values of the reflectors and a detected object are calculated based on the signals reflected from the reflectors and the detected object and then compared. When the coordinate value of the detected object is inside the area to be monitored, it is determined that the detected object is an intruding person or the like and an alarm is given. When the coordinate value of the detected object is outside the area to be monitored, it is determined that the detected object is not an intruding person or the like and no alarm is given. Calibration and self-diagnosis of the radar are periodically performed using at least one of the reflectors, thereby maintaining optimal performance of the radar.Type: ApplicationFiled: January 11, 2005Publication date: June 16, 2005Inventors: Naoyuki Kurita, Hiroshi Kondoh, Mikito Tsubota
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Patent number: 6897735Abstract: The oscillator includes an active device, a substrate, a microstrip line formed on the substrate, and a dielectric block. The resonator is made up with the microstrip line and the dielectric block that is disposed so as to couple with the microstrip line. The active device produces a negative resistance in a desired oscillation frequency band. The dielectric block is set such that a resonance frequency of the lowest order mode of the dielectric block is lower than a desired oscillation frequency, and the resonance frequency of one of the higher order modes coincides with the desired oscillation frequency. The oscillator is generated with the higher order mode of the resonator. Thus, the invention provides at a low cost a millimeter wave band oscillator of a low phase noise by using this oscillator, and a transmitter-receiver module and a radar system applying this oscillator to the local signal generator.Type: GrantFiled: February 13, 2002Date of Patent: May 24, 2005Assignee: Hitachi, Ltd.Inventors: Toshiyuki Nagasaku, Naoyuki Kurita, Hiroshi Kondoh
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Publication number: 20050093738Abstract: The invention intends to provide a sensor module suitable for miniaturization and reduction in costs, in the radar sensor that uses a millimeter or sub-millimeter wave signal of which frequency is more than 20 GHz. To accomplish this problem, the radar sensor is integrated into a one chip MMIC, in which an active circuit including an oscillator and a mixer is formed with an antenna on one semiconductor substrate. Further, the MMIC is sealed with a resin package. A dielectric lens is formed on the resin package over the antenna to attain a desired beamwidth. Thereby, the lens and the resin package can integrally be formed by a metal mold, thus reducing the cost.Type: ApplicationFiled: November 12, 2004Publication date: May 5, 2005Inventors: Toshiyuki Nagasaku, Hiroshi Kondoh, Hiroshi Shinoda
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Publication number: 20050079829Abstract: An antenna switch having a simple configuration and realizing high isolation between transmitting and receiving is provided. The antenna switch has a first switch connected between a transmitting terminal 31 and an antenna terminal 4, a transmission circuit 9 whose one end is connected to the antenna terminal and which shifts a phase of a transmitting signal by 90 degrees at use frequency, a second switch 6 whose one end is connected to the other end of the transmission circuit 9 and whose other end is grounded, and a plurality of third switches 7, 8 connected between the other end of the transmission circuit 9 and the plurality of receiving terminals 32, 33.Type: ApplicationFiled: August 20, 2004Publication date: April 14, 2005Inventors: Takashi Ogawa, Hiroshi Kondoh, Hidenori Suenaga, Akishige Nakajima
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Patent number: 6862001Abstract: A high frequency communication device which can reduce undesired electromagnetic coupling inside and outside a box thereof in which circuit parts constituting a transmitter-receiver circuit are contained. Periodic structures (6) are provided on at least a part of a wall constituting a box (1, 4, 5) so that the periodic structures (6) serve as a filter which has a non-propagating frequency band corresponding a frequency band covering an undesired electromagnetic emission inside the box. Thus, undesired electromagnetic emission energy from any electromagnetic emission source can be confined locally to prevent a possible problem of electromagnetic interference.Type: GrantFiled: January 4, 2002Date of Patent: March 1, 2005Assignee: Hitachi, Ltd.Inventors: Hiroshi Kondoh, Hiroshi Shinoda, Kenji Sekine
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Patent number: 6859164Abstract: In a position detecting system used to monitor a suspicious person and to give an alarm by using a radar which transmits/receives a microwave or a millimeterwave, the shape of a detectable area of the radar and that of the area to be monitored are not always equal to each other, and thus, an alarm may be erroneously given in response to the object outside the area to be monitored. For its solution, the area to be monitored is surrounded by a plurality of reflectors, and the coordinate values of the reflectors and the detecting object are calculated based on the signals reflected from the reflectors and the detecting object and then compared. When the coordinate value of the detecting object is inside the area to be monitored, it is determined that the detecting object is an intruding person or the like and an alarm is given.Type: GrantFiled: March 1, 2002Date of Patent: February 22, 2005Assignee: Hitachi, Ltd.Inventors: Naoyuki Kurita, Hiroshi Kondoh, Mikito Tsubota
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Publication number: 20050030231Abstract: A high frequency circuit module for use in an automotive radar or the like, in which RF circuit parts are mounted on both sides of a hard multilayer dielectric substrate, and a transmission line connecting the RF circuit parts provided on both sides is constructed by a via group including a periodical structure or a via having a coaxial structure perpendicular to faces of the multilayer dielectric substrate. As the multilayer dielectric substrate, a hard multilayer substrate using metallic layers as a microstrip line wiring layer, a DC/IF signal line layer, and grounding metal layers for shielding which are disposed on and under the DC/IF signal line is employed. By using the transmission line achieved by a through via having the periodical structure or the through via having the coaxial structure, an electromagnetic wave propagating in parallel between the grounding conductors is confined.Type: ApplicationFiled: September 1, 2004Publication date: February 10, 2005Inventors: Hideyuki Nagaishi, Hiroshi Kondoh
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Patent number: 6853329Abstract: A monopulse radar system for detecting an azimuth depending upon amplitude difference or phase difference between signals respectively received by plural receiving antennas, includes: a transmitting array antenna and a receiving array antenna each including antenna elements forming an antenna train, at least one antenna switch disposed among the elements of the transmitting array antenna and/or the receiving array antenna, and a switch controller for turning ON/OFF the antenna switch to change an aperture length of the transmitting array antenna and/or the receiving array antenna thereby changing a beam shape thereof. The antenna elements of the transmitting array antenna and the receiving array antenna are formed on a dielectric substrate. A dielectric length between the antenna train formed by the antenna elements and the antenna switch is ½ dielectric wavelength.Type: GrantFiled: March 1, 2004Date of Patent: February 8, 2005Assignee: Hitachi, Ltd.Inventors: Hiroshi Shinoda, Hiroshi Kondoh
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Publication number: 20050001757Abstract: An automotive radar having a high level of azimuth accuracy and a broad detectable range by virtue of preventing leaks of unnecessary waves to receiving antennas is to be provided. A transmitting array antenna 1 and receiving array antennas 2a, 2b are arranged on an antenna plate (grounding conductor plate) 3 which serves to ground the antennas, and radio wave absorbers 4 are arranged on two sides of the edges 15 of the antenna plate 3. The radio wave absorbers 4 may be configured of, for instance, a sponge material containing radio wave absorbing grains.Type: ApplicationFiled: July 15, 2003Publication date: January 6, 2005Inventors: Hiroshi Shinoda, Hiroshi Kondoh, Shiho Izumi