Patents by Inventor Takahiro Tanaka

Takahiro Tanaka 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: 8348289
    Abstract: With a rack-and-pinion mechanism, an impact force is absorbed and reduction in assembling performance is suppressed. An annular fitting groove (51) that extends in the circumferential direction of a rack guide (41) is formed in an outer peripheral face (41a) of the rack guide (41), and an O-ring (52) is fitted in the fitting groove (51) in a state in which the axial movement of the O-ring (52) is restricted. A communication groove (61) that provides communication between an internal space (55), defined by the fitting groove (51) and the O-ring (52), and the outside of the rack guide (41) is formed in the rack guide (41).
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: January 8, 2013
    Assignee: JTEKT Corporation
    Inventors: Takahiro Tanaka, Masahiko Hirose, Yoshiaki Izumi
  • Publication number: 20120319388
    Abstract: A steering apparatus has a column 46, a column 42 fitted to the column 46 and able to make collapsing movement or move, a bracket 21 attached to a vehicle body in such a way that it can be detached with the column 42 by an impact force of a secondary collision, a guide bracket 61 fixed to the column 46 and having a guide groove 63, and a pin 71 fixed to the bracket 21 and movable with the bracket 21 while being guided by the guide groove 63. The guide bracket 61 has a flat plate portion 61d that is not contact with the bracket 21. A guide groove 63 is provided in the flat plate portion 61d. The pin 71 has a head portion 713 at the top having a diameter larger than its shaft portion. The apparatus has a gap setting portion that is in abutment with the upper surface of the bracket 21 when the pin 71 is fixed to the bracket 21 to set the distance between the lower surface of the head portion 713 and the upper surface of the bracket 21 to a predetermined value.
    Type: Application
    Filed: March 15, 2012
    Publication date: December 20, 2012
    Inventors: Toru Ishii, Takahiro Tanaka
  • Publication number: 20120308228
    Abstract: An example is a bandwidth control method employed in an optical line terminal including: determining a first time point at which a first optical network unit starts the processing of transitioning between the states in a case where the first optical network unit is to be transitioned between the states; transmitting a state control signal containing the first time point to the first optical network unit in order to control the first optical network unit to start the processing of transitioning between the states; and stopping allocating a bandwidth used to transmit a signal to the optical line terminal to a second optical network unit during a period from the first time point until it is determined that the first optical network unit has finished the processing of transitioning between the states.
    Type: Application
    Filed: May 24, 2012
    Publication date: December 6, 2012
    Applicant: HITACHI, LTD.
    Inventors: Takahiro TANAKA, Tohru KAZAWA, Shota TAKAGI
  • Publication number: 20120291584
    Abstract: In a steering device having a steering lock device, the stress applied to around a through hole formed in a column to which the steering block device is attached is reduced. Since there is a slight clearance formed, in the vehicle height direction, between the outer periphery of the lock pin and the through hole and also between the guide groove and the engaging convex part, the clamping force is born by the flange section and first ribs and also by the flange section and second ribs without any force applied to the through hole. The engaging convex part is not fitted in the through hole, so that the through hole is only required to be large enough to allow the lock pin whose cross-sectional area is smaller than that of the engaging convex part to come in and out. This makes it possible to reduce the cross-sectional area of the through hole and thereby increase the strength of the outer column.
    Type: Application
    Filed: July 13, 2011
    Publication date: November 22, 2012
    Applicant: NSK
    Inventor: Takahiro Tanaka
  • Patent number: 8272785
    Abstract: A bearing mechanism 1 includes a housing 3 having a cylindrical inner peripheral surface 2, a rack shaft 5 inserted and secured in the housing 3 and having a cylindrical outer peripheral surface 4, and a sliding bearing 6 interposed between the inner peripheral surface 2 of the housing 3 and the outer peripheral surface 4 of the rack shaft 5.
    Type: Grant
    Filed: October 21, 2008
    Date of Patent: September 25, 2012
    Assignees: Jtekt Corporation, Oiles Corporation
    Inventors: Masahiko Hirose, Yoshihide Ohara, Masaaki Hashimoto, Takahiro Tanaka, Hidetoshi Kaida, Eiji Oki
  • Publication number: 20120212912
    Abstract: An electronic device is disclosed. The electronic device includes a housing, a circuit board, an antenna, electronic components, and a wiring part. The circuit board is built inside the housing on which an opening is formed. The antenna is facing one surface of the circuit board. Electronic components are disposed at the position facing the antenna through the circuit board, on the other surface of the circuit board, in a state such that the electronic components are not fixed to the circuit board The wiring part passes through the opening of the circuit board, with one end connected to the electronic components on one side of the circuit board and other end connected to the circuit board on the other surface of the circuit board.
    Type: Application
    Filed: August 25, 2011
    Publication date: August 23, 2012
    Inventors: Takahiro TANAKA, Mitsuhiro Nishizono, Takumi Ogata, Tadashi Koyama
  • Publication number: 20120212478
    Abstract: According to one embodiment, a display includes a telop detector, a depth corrector, a parallax image generator, and a display module. The telop detector is configured to calculate a probability of each pixel block being a telop. The pixel block is composed of a plurality of pixels in an input image. The depth corrector is configured to correct a predetermined depth of each pixel block in such a manner that as the probability is higher, the depth approaches a center of depth. The parallax image generator is configured to generate a parallax image of the input image based on the corrected depth. The display module is configured to display the parallax image stereoscopically.
    Type: Application
    Filed: August 5, 2011
    Publication date: August 23, 2012
    Inventor: Takahiro Tanaka
  • Publication number: 20120027101
    Abstract: According to an embodiment, a compression noise reduction apparatus of the embodiment includes a peripheral pixel state determination module, a filter strength determination module, and a deringing processing module. The peripheral pixel state determination module determines a state of a flat area and an edge area at a periphery of a filtering target pixel in decoded image. The filter strength determination module determines a filter strength to be used in filter processing in accordance with the state of the flat area and the edge area. The deringing processing module performs deringing processing using the determined filter strength.
    Type: Application
    Filed: February 9, 2011
    Publication date: February 2, 2012
    Inventor: Takahiro Tanaka
  • Patent number: 8000393
    Abstract: According to one embodiment, a video encoding apparatus includes a motion vector calculation module, a motion boundary detection module, and a quantization parameter setting module. The motion vector calculation module calculates motion vectors for respective blocks in an input image. The motion boundary detection module detects a motion boundary between a motion region and a still region in the input image based on the motion vectors of the respective blocks. The quantization parameter setting module sets a value of a quantization parameter used to quantize a block that borders the detected motion boundary to a value smaller than a value which is set when the block does not border the motion boundary in accordance with a detection result of the motion boundary.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: August 16, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Takahiro Tanaka
  • Publication number: 20110175311
    Abstract: With a rack-and-pinion mechanism, an impact force is absorbed and reduction in assembling performance is suppressed. An annular fitting groove (51) that extends in the circumferential direction of a rack guide (41) is formed in an outer peripheral face (41a) of the rack guide (41), and an O-ring (52) is fitted in the fitting groove (51) in a state in which the axial movement of the O-ring (52) is restricted. A communication groove (61) that provides communication between an internal space (55), defined by the fitting groove (51) and the O-ring (52), and the outside of the rack guide (41) is formed in the rack guide (41).
    Type: Application
    Filed: January 18, 2011
    Publication date: July 21, 2011
    Applicant: JTEKT CORPORATION
    Inventors: Takahiro TANAKA, Masahiko HIROSE, Yoshiaki IZUMI
  • Patent number: 7961977
    Abstract: According to one embodiment, an image processing apparatus includes an ? filter that compares the difference between a pixel value of a target pixel to be processed and that of a surrounding pixel neighboring the target pixel in each pixel block of an input image with a predetermined threshold. When the difference exceeds the predetermined threshold, the ? filter performs the replacement of the pixel value of the surrounding pixel. The predetermined threshold includes at least two different thresholds, a first threshold and a second threshold larger than the first threshold. When the difference exceeds the second threshold, the ? filter performs the replacement of the pixel value of the surrounding pixel in stages such that the pixel value of the surrounding pixel approaches that of the target pixel.
    Type: Grant
    Filed: April 23, 2010
    Date of Patent: June 14, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Takahiro Tanaka
  • Publication number: 20110069901
    Abstract: According to one embodiment, an image processing apparatus includes an ? filter that compares the difference between a pixel value of a target pixel to be processed and that of a surrounding pixel neighboring the target pixel in each pixel block of an input image with a predetermined threshold. When the difference exceeds the predetermined threshold, the ? filter performs the replacement of the pixel value of the surrounding pixel. The predetermined threshold includes at least two different thresholds, a first threshold and a second threshold larger than the first threshold. When the difference exceeds the second threshold, the ? filter performs the replacement of the pixel value of the surrounding pixel in stages such that the pixel value of the surrounding pixel approaches that of the target pixel.
    Type: Application
    Filed: April 23, 2010
    Publication date: March 24, 2011
    Inventor: Takahiro Tanaka
  • Publication number: 20100278467
    Abstract: A bearing mechanism 1 includes a housing 3 having a cylindrical inner peripheral surface 2, a rack shaft 5 inserted and secured in the housing 3 and having a cylindrical outer peripheral surface 4, and a sliding bearing 6 interposed between the inner peripheral surface 2 of the housing 3 and the outer peripheral surface 4 of the rack shaft 5.
    Type: Application
    Filed: October 21, 2008
    Publication date: November 4, 2010
    Inventors: Masahiko Hirose, Yoshihide Ohara, Masaaki Hashimoto, Takahiro Tanaka, Hidetoshi Kaida, Eiji Oki
  • Patent number: 7798504
    Abstract: A bush bearing includes a synthetic resin-made bush having a circumferential groove on its outer peripheral surface; an endless annular elastic member fitted in the circumferential groove of the bush; and a positioning structure for determining the position of the bush in a B direction with respect to an inner peripheral surface of a gear housing.
    Type: Grant
    Filed: January 12, 2007
    Date of Patent: September 21, 2010
    Assignees: JTEKT Corporation, OILES Corporation
    Inventors: Masahiko Hirose, Masaaki Hashimoto, Yoshihide Ohara, Takahiro Tanaka, Hidetoshi Kaida, Masao Shimura
  • Patent number: 7780176
    Abstract: A center take-off rack-and-pinion steering apparatus includes a cylindrical rack housing having an elongate hole extending in a longitudinal direction, a mounting bracket for mounting ends of a pair of tie rods on a rack shaft, and a slider interposed between the mounting bracket and the rack shaft and slidable in an inner periphery of the elongate hole. The inner periphery of the elongate hole and the slider include sliding contact sections that are brought into sliding contact with each other along with the slide of the slider slides. The sliding contact sections include at least a pair of curved sliding contact surfaces that are brought into sliding contact with each other in a curved shape when seen in an axial direction of the rack shaft.
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: August 24, 2010
    Assignee: JTEKT Corporation
    Inventors: Yoshihide Ohara, Masahiko Hirose, Masaaki Hashimoto, Mutsumi Watanabe, Takahiro Tanaka
  • Patent number: 7739793
    Abstract: A method of manufacturing a rack guide base body wherein a cavity (40) is formed which has a pair of semicylindrical convex surfaces (44a and 44b) and a pair of flat surfaces (45) each located between the semicylindrical convex surfaces (44a and 44b), and has a recessed surface (41) located on one axial end portion side inwardly of the semicylindrical convex surfaces (44a and 44b) and the flat surfaces (45) and a cylindrical surface (42) located on the other axial end portion side inwardly of the semicylindrical convex surfaces (44a and 44b) and the flat surfaces (45); a hollow portion (9c) is formed for allowing the cavity (40) to communicate with a hollow portion (10c) at one flat surface (45) and with a hollow portion (8c) at the other flat surface (45); a rack guide base body (50) is die cast by forcing molten metal of aluminum from the hollow portion (10c) into the cavity (40); and runners (56) integrally joined to flat surfaces (55) of the rack guide base body (50) formed by the respective flat surfaces
    Type: Grant
    Filed: April 26, 2005
    Date of Patent: June 22, 2010
    Assignees: JTekt Corporation, Oiles Corporation
    Inventors: Kazuhiro Yamamoto, Masao Shimura, Yoshiro Kuzumi, Masahiko Hirose, Masaaki Hashimoto, Takahiro Tanaka, Katsutoshi Nishimura
  • Publication number: 20100135397
    Abstract: According to one embodiment, a video encoding apparatus includes a motion vector calculation module, a motion boundary detection module, and a quantization parameter setting module. The motion vector calculation module calculates motion vectors for respective blocks in an input image. The motion boundary detection module detects a motion boundary between a motion region and a still region in the input image based on the motion vectors of the respective blocks. The quantization parameter setting module sets a value of a quantization parameter used to quantize a block that borders the detected motion boundary to a value smaller than a value which is set when the block does not border the motion boundary in accordance with a detection result of the motion boundary.
    Type: Application
    Filed: September 28, 2009
    Publication date: June 3, 2010
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventor: Takahiro TANAKA
  • Patent number: 7588258
    Abstract: A steering apparatus includes an attaching bracket connecting end portions of a pair of tie rods to a rack shaft. The attaching bracket includes a base which is fixed to the rack shaft and includes at least one fixing member inserting hole through which a fixing member fixing the attaching bracket to the rack shaft is provided, and a supporting stay supporting the end portions of the pair of tie rods via ball joints respectively. The supporting stay extends from an intermediate portion of the base in an axial direction of the rack shaft. A center of the ball joint supporting the end portion of each of the tie rods is positioned offset from an axial line of the fixing member by a predetermined distance when viewed along the axial direction of the rack shaft.
    Type: Grant
    Filed: November 27, 2007
    Date of Patent: September 15, 2009
    Assignee: JTEKT Corporation
    Inventors: Masaaki Hashimoto, Masahiko Hirose, Yoshihide Ohara, Takahiro Tanaka
  • Publication number: 20090000853
    Abstract: A bush bearing 7 includes a synthetic resin-made bush 17 having a circumferential groove 16 on its outer peripheral surface 15; an endless annular elastic member 18 fitted in the circumferential groove 16 of the bush 17; and a positioning means 19 for determining the position of the bush 17 in a B direction with respect to an inner peripheral surface 12 of a gear housing 6.
    Type: Application
    Filed: January 12, 2007
    Publication date: January 1, 2009
    Inventors: Masahiko Hirose, Masaaki Hashimoto, Yoshihide Ohara, Takahiro Tanaka, Hidetoshi Kaida, Masao Shimura
  • Patent number: 7451330
    Abstract: There are provided a mobile device that is equipped with a musical composition-reproducing section and capable of curtailing the battery drain as much as possible, and a mobile device that prevents the quality of reproduced musical tones from being degraded even if the voltage level of the battery lowers. A battery voltage detector monitors an voltage level of a battery. The musical composition-reproducing section is controlled such that the number of parts of the musical composition reproduced by the musical composition-reproducing section is reduced when the monitored voltage level of the battery becomes lower than a reference value.
    Type: Grant
    Filed: November 7, 2005
    Date of Patent: November 11, 2008
    Assignee: Yamaha Corporation
    Inventor: Takahiro Tanaka