Patents by Inventor Daisuke Mizuno

Daisuke Mizuno 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: 20130255614
    Abstract: Provided is a device for automatically stopping an engine when an automatic stop condition is satisfied and restarting the engine thereafter when a restart condition is satisfied, the device including: a ring gear (12) to be coupled to a crankshaft of the engine; a starter motor (14) for starting the engine; a pinion gear (16) for transmitting rotation of the starter motor to the ring gear; pinion-gear moving means (17) for moving the pinion gear by energization to bring the pinion gear into meshing engagement with the ring gear; and starter control means (11) for controlling a voltage to be applied to the pinion-gear moving means so as to fall within a predetermined range when the pinion gear and the ring gear are brought into meshing engagement by moving the pinion gear by the pinion-gear moving means.
    Type: Application
    Filed: January 24, 2012
    Publication date: October 3, 2013
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Hiroaki Kitano, Daisuke Mizuno, Koichiro Kamei, Kazuhiro Odahara
  • Publication number: 20130233128
    Abstract: The engine starter includes: a starter motor; a pinion unit (30) for sliding in an axial direction on an output shaft of the starter motor; and a ring gear (100) which meshes with a pinion pushed out by a push-out mechanism (60) and receives a transmission of a rotational force of the starter motor to thereby start an engine, and the pinion portion (30) includes a pinion gear divided in the axial direction into two pinion gears which are a first pinion gear (35) having a protruded shape for synchronization, for first colliding with the ring gear upon start of meshing with the ring gear, and a second pinion gear (34) for serving to transmit the rotational force after the meshing.
    Type: Application
    Filed: July 27, 2011
    Publication date: September 12, 2013
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Daisuke Mizuno, Haruhiko Shimoji, Koichiro Kamei, Masami Abe, Kazuhiro Odahara, Masahiko Kurishige, Hiroaki Kitano, Yuhei Tsukahara, Masahiro Iezawa
  • Patent number: 8503538
    Abstract: There are provided a system, an apparatus, and a method for suppressing increase in an amount of distribution data when performing content distribution via a network, improving reliability of the data received by a receiver in the distribution through an unstable transmission path such as a wireless transmission path, enabling provision of the content with a stable quality, and realizing the provision of the content with an optimal quality for the reception environment of content receiver, while suppressing an increase in an amount of processing for improving reliability of the distribution data on both of reception side and a transmission side.
    Type: Grant
    Filed: January 24, 2005
    Date of Patent: August 6, 2013
    Assignee: NEC Corporation
    Inventors: Hiroaki Dei, Daisuke Mizuno, Kazunori Ozawa
  • Publication number: 20130192419
    Abstract: An engine starting device includes: a starter motor; a pinion unit coupled to an output-shaft side of the starter motor by a spline, for sliding in an axial direction; and a ring gear which meshes with a pinion gear of the pinion unit pushed out by a push-out mechanism, and receives a transmission of a rotation force of the starter motor, thereby starting an engine. The pinion unit includes, on all teeth on distal end portions in a meshing axial direction of the pinion gear meshing with the ring gear, synchronization surfaces which are a pair of surfaces parallel with the meshing axial direction, and have a thickness thinner than a tooth thickness of the pinion gear.
    Type: Application
    Filed: November 24, 2011
    Publication date: August 1, 2013
    Applicant: Mitsubishi Electric Corporation
    Inventors: Daisuke Mizuno, Haruhiko Shimoji, Koichiro Kamei, Masami Abe, Masahiko Kurishige, Hiroaki Kitano, Yuhei Tsukahara, Masahiro Iezawa, Kazuhiro Odahara
  • Patent number: 8290692
    Abstract: An engine-starting device for stopping the engine after satisfaction of an idling-stop condition during idling of a vehicle, starting rotation of a starter-motor upon satisfaction of a starter-motor rotation start condition, and causing a pinion gear to mesh with a ring gear upon satisfaction of a pinion gear meshing condition, includes the ring gear to be connected to a crank shaft, the pinion gear for transmitting the starter-motor rotation, a plunger for causing the pinion gear to mesh with the ring gear, and a starter control section for instructing energization of the starter-motor, in which the starter-motor is energized to be rotated upon the satisfaction of the starter-motor rotation start condition prior to clearing of the idling-stop condition in response to a restart request, and the pinion gear is caused to mesh with the ring gear by the plunger upon the satisfaction of the pinion gear meshing condition.
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: October 16, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hiroaki Kitano, Masahiko Kurishige, Akihiko Imagi, Daisuke Mizuno, Koichiro Kamei, Kazuhiro Odahara, Naohito Kaneda
  • Patent number: 8253775
    Abstract: A multipoint videoconference server is made to swiftly respond to a video switching request from a terminal and a degree of computational complexity is made lower. A server 300 decodes only m (1<m?n) video streams selected from n terminals and stores video streams that need not be decoded in buffers. When an instruction to switch to another stream is received from a terminal, the server 300 uses data accumulated in the buffers and decodes from the latest I frame by going back to the past before starting to provide a video using the video stream.
    Type: Grant
    Filed: June 8, 2006
    Date of Patent: August 28, 2012
    Assignee: NEC Corporation
    Inventors: Daisuke Mizuno, Hiroaki Dei, Kazunori Ozawa
  • Patent number: 8217884
    Abstract: A digital image display capable of controlling an image signal output to a display screen portion, particularly capable of precisely controlling the phase of the image signal, regardless of provision/nonprovision of a function of communicating with an image signal output device is obtained. This digital image display includes an analog-to-digital conversion portion converting a received analog image signal to a digital image signal, a display screen portion displaying the digital image signal converted by the analog-to-digital conversion portion and a control portion controlling a clock value, a phase value, a horizontal position and vertical position of the digital image signal, while the control portion is so formed as to decide the optimum phase value on the basis of pixel data on the boundary between an image region having no image and another image region having an image in the digital image signal when controlling the phase value of the digital image signal.
    Type: Grant
    Filed: March 7, 2008
    Date of Patent: July 10, 2012
    Assignee: Funai Electric Co., Ltd.
    Inventor: Daisuke Mizuno
  • Publication number: 20120103294
    Abstract: An engine starting device for an automatic idling stop system includes: a crank angle sensor for detecting a crank angle of an engine; a ring gear connected to a crankshaft of the engine, for transmitting rotation of the engine; ring gear rpm detecting section; a starter motor for starting the engine; a pinion gear for transmitting rotation of the starter motor to the ring gear; pinion-gear push-out section for pushing out the pinion gear into meshing engagement with the ring gear; and pinion gear push-out control section for driving the pinion-gear push-out section to bring the pinion gear and the ring gear into meshing engagement when the ring gear rpm detected by the ring gear rotational speed detection section becomes smaller than a threshold value which is determined by at least one of the crank angle, a gear range, and a restart condition.
    Type: Application
    Filed: April 15, 2010
    Publication date: May 3, 2012
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Hiroaki Kitano, Masahiko Kurishige, Daisuke Mizuno, Koichiro Kamei, Shiro Yonezawa, Kazuhiro Odahara, Naohito Kaneda
  • Patent number: 8055974
    Abstract: There are provided a content data transmission method, device, and program that minimize serious disturbances in reproduced content on the reception side, caused by a transmission error of encoded data, without sending feedback information from the reception side to the transmission side. When an encoder creates encoded data to be distributed, the encoder creates plural items of encoded data at the same time or creates FEC data at the same time in advance and, when storing the data in a file, stores the data as if the data were one item of encoded data. When a distribution server distributes the data using the file, the plurality of items of encoded data are automatically distributed at the same time and the FEC data is distributed. A client receives the plurality of items of encoded data or the FEC data to reduce the probability of data shortage due to a packet loss and, as a result, the deterioration in the image quality and the audio quality is reduced.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: November 8, 2011
    Assignee: NEC Corporation
    Inventors: Daisuke Mizuno, Hiroaki Dei, Kazunori Ozawa
  • Publication number: 20110055658
    Abstract: There are provided a content data transmission method, device, and program that minimize serious disturbances in reproduced content on the reception side, caused by a transmission error of encoded data, without sending feedback information from the reception side to the transmission side. When an encoder 103 creates encoded data to be distributed, the encoder creates plural items of encoded data at the same time or creates FEC data at the same time in advance and, when storing the data in a file 104, stores the data as if the data were one item of encoded data. When a distribution server 105 distributes the data using the file 104, the plurality of items of encoded data are automatically distributed at the same time and the FEC data is distributed. A client 106 receives the plurality of items of encoded data or the FEC data to reduce the probability of data shortage due to a packet loss and, as a result, the deterioration in the image quality and the audio quality is reduced.
    Type: Application
    Filed: November 10, 2010
    Publication date: March 3, 2011
    Applicant: NEC CORPORATION
    Inventors: Daisuke Mizuno, Hiroaki Dei, Kazunori Ozawa
  • Publication number: 20110030018
    Abstract: A recording and reproducing apparatus is installed on a network through which communication with a terminal device is enabled. The recording and reproducing apparatus includes: a recording reservation section that receives a recording reservation request for video data from the terminal device via the network; a communication section that receives the video data which is distributed to the terminal device by using at least one of multicast, broadcast, and unicast; a video recording section that records the received video data based on the recording reservation request; and a video distribution section that distributes the recorded video data to a terminal device that has made a reproduction request for the relevant video data via the network.
    Type: Application
    Filed: April 16, 2009
    Publication date: February 3, 2011
    Inventors: Daisuke Mizuno, Kazunori Ozawa
  • Patent number: 7856585
    Abstract: There are provided a content data transmission method, device, and program that minimize serious disturbances in reproduced content on the reception side, caused by a transmission error of encoded data, without sending feedback information from the reception side to the transmission side. When an encoder creates encoded data to be distributed, the encoder creates plural items of encoded data at the same time or creates FEC data at the same time in advance and, when storing the data in a file, stores the data as if the data were one item of encoded data. When a distribution server distributes the data using the file, the plurality of items of encoded data are automatically distributed at the same time and the FEC data is distributed. A client receives the plurality of items of encoded data or the FEC data to reduce the probability of data shortage due to a packet loss and, as a result, the deterioration in the image quality and the audio quality is reduced.
    Type: Grant
    Filed: December 13, 2004
    Date of Patent: December 21, 2010
    Assignee: NEC Corporation
    Inventors: Daisuke Mizuno, Hiroaki Dei, Kazunori Ozawa
  • Publication number: 20100256896
    Abstract: An engine-starting device for stopping the engine after satisfaction of an idling-stop condition during idling of a vehicle, starting rotation of a starter-motor upon satisfaction of a starter-motor rotation start condition, and causing a pinion gear to mesh with a ring gear upon satisfaction of a pinion gear meshing condition, includes the ring gear to be connected to a crank shaft, the pinion gear for transmitting the starter-motor rotation, a plunger for causing the pinion gear to mesh with the ring gear, and a starter control section for instructing energization of the starter-motor, in which the starter-motor is energized to be rotated upon the satisfaction of the starter-motor rotation start condition prior to clearing of the idling-stop condition in response to a restart request, and the pinion gear is caused to mesh with the ring gear by the plunger upon the satisfaction of the pinion gear meshing condition.
    Type: Application
    Filed: September 14, 2009
    Publication date: October 7, 2010
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Hiroaki KITANO, Masahiko KURISHIGE, Akihiko IMAGI, Daisuke MIZUNO, Koichiro KAMEI, Kazuhiro ODAHARA, Naohito KANEDA
  • Patent number: 7802545
    Abstract: A valve timing controller has the drive circuit which performs a feedback control of the energization to the electric motor based on the target rotation speed and the actual rotation speed of the electric motor, and rotates the electric motor to the target rotation direction. An invalid switch part of the drive circuit suspends the feedback control at the time of change of the target rotation direction.
    Type: Grant
    Filed: July 19, 2007
    Date of Patent: September 28, 2010
    Assignee: Denso Corporation
    Inventor: Daisuke Mizuno
  • Patent number: 7631623
    Abstract: A valve timing controller includes a driving circuit, a control circuit, and a signal line. Receiving electric power from a power source, the drive circuit drives an electric motor according to the control signal, and outputs the rotative direction signal showing the rotation direction of the electric motor. A controlling circuit outputs the control signal generated according to the rotation-direction signal. A signal line transmits the rotation-direction signal to the controlling circuit from the drive circuit. The drive circuit outputs a high-level signal showing the normal rotation direction, and a low level signal showing the reverse rotation direction of the electric motor. When a power supply voltage falls below to the acceptable value, the drive circuit maintains the voltage level of the signal line at high level.
    Type: Grant
    Filed: July 16, 2007
    Date of Patent: December 15, 2009
    Assignee: DENSO Corporation
    Inventor: Daisuke Mizuno
  • Publication number: 20090207232
    Abstract: A multipoint videoconference server is made to swiftly respond to a video switching request from a terminal and a degree of computational complexity is made lower. A server 300 decodes only m (1<m?n) video streams selected from n terminals and stores video streams that need not be decoded in buffers. When an instruction to switch to another stream is received from a terminal, the server 300 uses data accumulated in the buffers and decodes from the latest I frame by going back to the past before starting to provide a video using the video stream.
    Type: Application
    Filed: June 8, 2006
    Publication date: August 20, 2009
    Inventors: Daisuke Mizuno, Hiroaki Dei, Kazunori Ozawa
  • Patent number: 7538515
    Abstract: A motor controller includes an inverter circuit, a speed detector, an amplifier, a voltage detector, and an offset voltage addition circuit. The inverter circuit drives a motor based on a PWM signal. The speed detector generates an actual speed signal corresponding to an actual speed of the motor. The amplifier outputs a differential voltage by amplifying a difference between the actual speed signal and a target speed signal. The voltage detector outputs a switch signal for switching rotation direction of the motor. The switch signal has a first level, when the differential voltage is equal to or greater than a predetermined value. The switch signal has a second level, when the differential voltage is less than the predetermined value. The offset voltage addition circuit adds an offset voltage to the differential voltage according to the signal level of the switch signal.
    Type: Grant
    Filed: September 20, 2007
    Date of Patent: May 26, 2009
    Assignee: Denso Corporation
    Inventors: Masahiro Tsuchida, Daisuke Mizuno
  • Patent number: 7448351
    Abstract: A valve timing controller includes a driving circuit, a control circuit, and a signal line. The driving circuit controls electricity applied to the electric motor according to a control signal, and generates a rotation-direction signal which indicates a rotation direction of the electric motor by a voltage level. The control circuit outputs the control signal which is generated according to the rotation-direction signal. The rotation-direction signal is transmitted from the driving circuit to the control circuit through the signal line. The driving circuit outputs the rotation-direction signal of high-level during a predetermined period after the control signal is outputted.
    Type: Grant
    Filed: April 30, 2007
    Date of Patent: November 11, 2008
    Assignee: Denso Corporation
    Inventor: Daisuke Mizuno
  • Publication number: 20080218507
    Abstract: A digital image display capable of controlling an image signal output to a display screen portion, particularly capable of precisely controlling the phase of the image signal, regardless of provision/nonprovision of a function of communicating with an image signal output device is obtained. This digital image display includes an analog-to-digital conversion portion converting a received analog image signal to a digital image signal, a display screen portion displaying the digital image signal converted by the analog-to-digital conversion portion and a control portion controlling a clock value, a phase value, a horizontal position and vertical position of the digital image signal, while the control portion is so formed as to decide the optimum phase value on the basis of pixel data on the boundary between an image region having no image and another image region having an image in the digital image signal when controlling the phase value of the digital image signal.
    Type: Application
    Filed: March 7, 2008
    Publication date: September 11, 2008
    Applicant: Funai Electric Co., Ltd.
    Inventor: Daisuke MIZUNO
  • Publication number: 20080088264
    Abstract: A motor controller includes an inverter circuit, a speed detector, an amplifier, a voltage detector, and an offset voltage addition circuit. The inverter circuit drives a motor based on a PWM signal. The speed detector generates an actual speed signal corresponding to an actual speed of the motor. The amplifier outputs a differential voltage by amplifying a difference between the actual speed signal and a target speed signal. The voltage detector outputs a switch signal for switching rotation direction of the motor. The switch signal has a first level, when the differential voltage is equal to or greater than a predetermined value. The switch signal has a second level, when the differential voltage is less than the predetermined value. The offset voltage addition circuit adds an offset voltage to the differential voltage according to the signal level of the switch signal.
    Type: Application
    Filed: September 20, 2007
    Publication date: April 17, 2008
    Applicant: DENSO CORPORATION
    Inventors: Masahiro Tsuchida, Daisuke Mizuno