Patents by Inventor Toshimitsu Oka

Toshimitsu Oka 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: 6320341
    Abstract: A control device for a movable member includes a DC motor for establishing position transfer of the movable member in such a manner that after a first position of the movable member is stored in a memory, even if the movable member is at a second position, the moving member is returned to the first position only upon manipulating a switch and a motor pulse generating circuit generates a cut-off frequency which is variable depending on a ripple pulse frequency which is indicative of a rotational number of the motor.
    Type: Grant
    Filed: October 29, 1999
    Date of Patent: November 20, 2001
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Toshimitsu Oka, Kohji Aoki, Hideyuki Kanie, Hitoshi Ishikawa
  • Patent number: 6304168
    Abstract: A door approach transmission apparatus comprises an outside door handle 20 having a conductor with a slit 23 disposed in the door handle surface. A slot antenna 21, 23, 24, 25 is disposed at the slit 23, and includes feeding points 24, 25 installed on the conductor. The apparatus also includes a transmitter 26 for applying voltage for radio wave oscillation to the feeding points 24, 25. The above-described door approach transmission and reception apparatus can be used in a door lock control apparatus where a search radio wave is emitted from a vehicle, a portable wireless device 10 receives the search radio wave, and returns an ID signal. An electrically driven door lock apparatus 40 is driven to unlock the door when the returned ID signal coincides with a registered ID signal. The search radio wave is irradiated from the slot antenna. Either of a transmitter 26 and a receiver 33 is selectively connected to the feeding points 24, 25.
    Type: Grant
    Filed: April 21, 1998
    Date of Patent: October 16, 2001
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Takayuki Ohta, Toshimitsu Oka, Yuichi Murakami, Rikuo Hatano, Kiyokazu Ieda
  • Patent number: 6256869
    Abstract: An electronic-component mounting system, including a printed-circuit-board supporting device which positions and supports a printed circuit board, a movable table which is movable, relative to the printed-circuit-board supporting device, in at least one of an X direction and a Y direction which are perpendicular to each other and cooperate with each other to define an X-Y plane parallel to a board-support plane on which the printed circuit board is supported by the supporting device, an electronic-component supplying device which is mounted on the movable table and which includes a component-supply portion from which electronic components are supplied one by one, and an electronic-component mounting device which is mounted on the movable table together with the electronic-component supplying device and which receives the electronic components one by one from the component-supply portion of the supplying device and mounts at least one of the electronic components on the printed circuit board positioned and sup
    Type: Grant
    Filed: July 25, 1997
    Date of Patent: July 10, 2001
    Assignee: Fuji Machine Mfg. Co., Ltd.
    Inventors: Koichi Asai, Toshimitsu Oka
  • Patent number: 6172473
    Abstract: A device for determining a rotational number of an electric dc motor which drives a moving body of an automobile accessory such a sunroof, or a glass pane of a power window includes a switched capacitance filter for eliminating noise from the motor, a cutoff frequency of the switched capacitance filter being dependent on a clock input thereof; a pulse shaping circuit for generating a ripple pulse signal indicative of the rotational number of the motor by wave-shaping an output of the switched capacitance filter; and a pulse generating circuit providing an output pulse signal so as to establish a condition wherein the frequency of the ripple pulse signal is equalized to the cutoff frequency of the a switched capacitance filter.
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: January 9, 2001
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Toshimitsu Oka, Koji Aoki, Hideyuki Kanie, Hitoshi Ishikawa
  • Patent number: 6002341
    Abstract: A vehicle door lock control apparatus includes a remote control unit that provides instructions to effect a lock condition or an unlock condition of a door look mechanism, a door handle switch which detects the operating condition of a door handle, a door lock control unit that effects the lock condition or the unlock condition of the door lock mechanism in response to signals produced by the door handle switch or the remote control unit, and a contact electrode connected to the door lock control unit for detecting operation of the door handle through contact by a user. The remote control unit has an electrode that establishes a capacitance combination between the remote control unit and the door lock control unit.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: December 14, 1999
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Takayuki Ohta, Toshimitsu Oka, Rikuo Hatano
  • Patent number: 5965856
    Abstract: A sheet-like pressure sensitive switch is disclosed. A spacer 2 of an insulating material is interposed between a first film 1 of an insulating material which is provided with a first electrode 1a and a second film 3 of an insulating material which is provided with a second electrode 3a. The spacer 2 has a number of openings 2a, through which the first electrode 1a and the second electrode 3a oppose each other with an air gap therebetween. A first lead wire 4a and a second lead wire 4b are connected to the first electrode 1a and the second electrode 3a, respectively. In a pressure sensitive switch according to a first embodiment, the first and the second film 1, 3 are formed of polyethylene naphthalate films. In a pressure sensitive switch according to a second embodiment, the second film 3 is formed of polyethylene terephthalate film while the first film 1 is formed of polyethylene naphthalate film.
    Type: Grant
    Filed: November 28, 1997
    Date of Patent: October 12, 1999
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Shoji Okada, Toshimitsu Oka, Naofumi Fujie, Kazuya Tanaka, Hitoshi Takayanagi
  • Patent number: 5895900
    Abstract: A pressure sensitive switch includes a first insulating film provided on one surface thereof with an electrode sheet and an insulating spacer having one surface connected to one surface of the first insulating film and a thickness. The insulating spacer is formed with a plurality of holes, each having a diameter larger than the thickness and a plurality of air-vents, each having a width which is narrower than the diameter of the holes in such a manner that the holes and the air-vents are in mutual air communication and extend through the insulating spacer along its thickness direction. A second insulating film is provided on one surface thereof with another electrode sheet and one surface of the second insulating film is connected to the other surface of the insulating spacer. A cord has a first wire and a second wire connected to the electrode sheet of the first insulating film and the electrode sheet of the second insulating film, respectively.
    Type: Grant
    Filed: December 22, 1997
    Date of Patent: April 20, 1999
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Shoji Okada, Toshimitsu Oka, Naofumi Fujie, Kazuya Tanaka, Hitoshi Takayanagi
  • Patent number: 5896090
    Abstract: An occupant sensing apparatus for detecting a seated person on a seat includes a pressure switch disposed in the seat. The pressure switch has a pair of films and a pair of electrodes disposed between the films. The pair of electrodes are spaced in the films so as to define an OFF condition of the pressure switch. The pressure switch is in an ON condition when the electrodes contact each other. The occupant sensing apparatus further includes a controller connected to the electrodes of the pressure switch and determining whether the seat is occupied in accordance with the ON or OFF condition of the pressure switch.
    Type: Grant
    Filed: May 28, 1997
    Date of Patent: April 20, 1999
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Shoji Okada, Toshimitsu Oka, Naofumi Fujie
  • Patent number: 5769471
    Abstract: An apparatus for unlocking a door lock for a vehicle, comprising a plurality of door locks for being mounted on doors of the vehicle, a collision direction detecting device for detecting a direction of an impact applied to a vehicle; and an unlocking mechanism for unlocking a door lock located on a side opposite to a collision side based on the direction detected by the collision direction detecting device.
    Type: Grant
    Filed: September 3, 1996
    Date of Patent: June 23, 1998
    Assignees: Aisin Seiki Kabushiki Kaisha, Toyota Jidosha Kabushiki Kaisha
    Inventors: Yasuaki Suzuki, Naofumi Fujie, Toshimitsu Oka, Kazunori Sakamoto, Kouji Aoki, Osamu Fujimoto, Yutaka Kondoh, Masahiro Miyaji
  • Patent number: 5749173
    Abstract: A regulator for a power window having a safety function for preventing an object from being caught in a closing power window includes a driving unit for raising and lowering the window glass of a vehicle and a driven unit which receives power from the driving unit. When frictional resistance corresponding to relative displacement between the driving and driven units is less than a fixed value during descent of the window glass and exceeds this fixed during ascent of the window glass, the ascending window glass is reversed and made to descend. When the amount of an increase in current to the driving unit during ascent of the window glass increases in a case where the sliding resistance has exceeded a fixed value even once during descent of the window glass, the ascending window glass is reversed and made to descend.
    Type: Grant
    Filed: February 20, 1997
    Date of Patent: May 12, 1998
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Toshihiko Ishida, Toshimitsu Oka, Naofumi Fujie, Hitoshi Ishikawa, Yasuaki Suzuki
  • Patent number: 5689811
    Abstract: An information communication system including an order station for transmitting a command signal to a mobile station, the mobile station including a memory for storing information representing that it has received the transmitted command signal from the order station, but has not responded to the command signal.
    Type: Grant
    Filed: December 19, 1996
    Date of Patent: November 18, 1997
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Rikuo Hatano, Toshimitsu Oka
  • Patent number: 5657232
    Abstract: A relative speed of a vehicle with respect to a satellite is detected from a deviation of a tuning frequency caused by the Doppler effect, and a vehicle speed is determined from the relative speed. A piezoelectric oscillation gyro detects an angular speed of rotation of the vehicle, which is integrated to determine an azimuth. A travel is detected in terms of the vehicle speed and the azimuth, and the detected travel and information from available GPS satellites are substituted into a navigation equation to solve it for a solution. Alternatively, altitude information detected by an altitude sensor and the angular speed of rotation of the vehicle as detected by the piezoelectric oscillation gyro may be is inputted. The angular speed of rotation is integrated to determine the azimuth. Information from two GPS satellites and information representing azimuth .phi. and altitude .DELTA.z are substituted into the navigation equation to solve it for a solution. Kalman filter is employed.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: August 12, 1997
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Seiji Ishikawa, Yuichi Murakami, Tomio Yasuda, Toshimitsu Oka
  • Patent number: 5631838
    Abstract: A length of time required for the verification of data transmitted from a satellite or satellites is reduced. A distance r1 calculated from a time delay required for the propagation of a radio wave between a transmitting and a receiving site is obtained, as is a line-of-sight distance r2 which is calculated from the positions of a satellite and a point of reception. When a difference between these two distances is small, data from these satellites are regarded as valid data. However, when the difference is large, data is regarded as involving a large error. The position of the point of reception is determined by a positioning calculation which utilizes data from predetermined three or four verified satellites, or is entered by an operator. The position of the satellite is obtained from orbital data which is delivered by that satellite.
    Type: Grant
    Filed: March 11, 1996
    Date of Patent: May 20, 1997
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Seiji Ishikawa, Yuichi Murakami, Tomio Yasuda, Tomohiro Yamamoto, Toshimitsu Oka
  • Patent number: 5402441
    Abstract: A GPS signal receiver has a PN code generator for producing a PN code identical to a PN code in a received GPS signal which is transmitted from a GPS satellite, the PN code produced by the PN code generator being controllable in phase, a PN code correlator for correlating the received GPS signal with the PN code produced by the PN code generator so as to code-strip the received GPS signal, a signal search unit for monitoring a correlated output signal from the PN code correlator and controlling the phase of the PN code produced by the PN code generator to search for a correlated output signal in excess of a predetermined value, a signal determining unit for determining the correlated output signal in excess of the predetermined value as being produced by a direct wave of the GPS signal, and a signal tracking unit for controlling the phase of the PN code produced by the PN code generator to track a peak of the correlated output signal that is determined as being produced by the direct wave of the GPS signal.
    Type: Grant
    Filed: August 17, 1993
    Date of Patent: March 28, 1995
    Assignees: Japan Radio Co., Ltd., Aisin Seiki Kabushiki Kaisha
    Inventors: Koichi Washizu, Toshihiro Kawazoe, Yorihisa Suwa, Yukio Yokoi, Chogo Sekine, Tomio Yasuda, Toshimitsu Oka, Yuichi Murakami, Tomohiro Yamamoto, Seiji Ishikawa
  • Patent number: 5377015
    Abstract: An image processing device for converting a scanned image into a monochrome image includes a scanner for providing an image signal which is applied to a sampling and holding circuit. The output of the scanning and holding circuit is supplied to a peak hold circuit and to a comparator. The output of the peak hold circuit is also applied to the comparator and the output of the comparator is supplied to a D-type flip flop circuit, the output of which is fed back to the input to the comparator from the scanning and holding circuit. The D-type flip flop generates an alteration of black and white level signals when the output from the sampling and holding circuit is close to the threshold level whereby a printer will print alterations of black and white dots.
    Type: Grant
    Filed: September 19, 1991
    Date of Patent: December 27, 1994
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Rikuo Hatano, Toshimitsu Oka
  • Patent number: 5355511
    Abstract: An information communicating system and method comprising an order station and a plurality of mobile stations. When the order station cannot communicate with a mobile station, the order station selects one mobile station which is nearest to the uncommunicable mobile station and orders the selected mobile station to communicate with the uncommunicated mobile station. Communicable mobile station send information to the order station. The selected mobile station communicates with the uncommunicable mobile station appointed by the order station according to an order from the order station, and transmits the position information of uncommunicable mobile station to the order station. The order station displays the position of the mobile station to control movement of the mobile station.
    Type: Grant
    Filed: August 7, 1991
    Date of Patent: October 11, 1994
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Rikuo Hatano, Toshimitsu Oka
  • Patent number: 5159257
    Abstract: A vehicle having an engine starter requires a huge amount of electric power so that when the remaining capacity of the battery is low, the engine starter cannot start the engine quickly. In order to maintain a minimum capacity of the battery necessary to start the engine quickly, an electric power supply apparatus is provided which includes a switching device for stopping a vehicle engine, a timer device for measuring elapsed time after engine stoppage, a capacity detector for detecting remaining capacity of a battery, vehicle equipment driven by the electric power from the battery, a switching member for turning off the power supplied from the battery to the vehicle equipment and a control device for controlling the switching member when the capacity of the battery is below a certain level and the timer device measures the elapsed time.
    Type: Grant
    Filed: February 27, 1991
    Date of Patent: October 27, 1992
    Assignee: Aisin Seiki K.K.
    Inventors: Toshimitsu Oka, Rikuo Hatano