Patents by Inventor Tatsunori Fujiwara

Tatsunori Fujiwara 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: 8587894
    Abstract: A disc device includes a first cam gear 13 having a cam groove 13d, and engaged with and released from one gear of a power transmission system, and a second cam gear 14 having a hole portion 14d corresponding to the cam groove 13d, laid on the first cam gear 13 and rotatably supported relative to the first cam gear 13, and engaged with and released from one gear of the power transmission system.
    Type: Grant
    Filed: July 10, 2009
    Date of Patent: November 19, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventors: Akihito Onishi, Takaharu Eguchi, Yoshifumi Awakura, Tatsunori Fujiwara, Akinori Tsukaguchi
  • Patent number: 8381605
    Abstract: A disc device has a sliding member 16 that operates in response to a rotational force of the first partially toothless gear 13 to disconnect a power transmission system from a disc conveying roller, and a protruding portion 16a disposed on this sliding member 16 is brought into contact with a rising portion 17b of a rotary lever 17 at an initial position of the sliding member before the sliding member starts operating, so as to restrict a rotation of the rotary lever 17 in such a way that a pin 17a does not come into contact with a wall surface of a cam groove 13d.
    Type: Grant
    Filed: July 13, 2009
    Date of Patent: February 26, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventors: Akihito Onishi, Takaharu Eguchi, Yoshifumi Awakura, Tatsunori Fujiwara, Akinori Tsukaguchi
  • Patent number: 8272003
    Abstract: A disc apparatus includes: a playback unit 1 provided with a conveying roller 5 and a disc guide 3 to be vertically movable with respect to an apparatus main body; a moving means for moving downward the conveying roller and the disc guide in amounts of travel which are different from each other to avoid contact of the roller and the guide with a disc 14 with interlocking an operation that the loaded disc 14 is moved downward to be mounted on a turntable 6; and a disc-guide-cum-position-regulating member 102 attached to the apparatus main body corresponding to a disc loading port such that the playback unit is restrained from moving to the disc loading port side.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: September 18, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takaharu Eguchi, Yoshifumi Awakura, Akihito Onishi, Tatsunori Fujiwara, Akinori Tsukaguchi
  • Patent number: 8127319
    Abstract: A disk reproducing apparatus includes a disk detecting lever that has a switch abutting section and a light intercepting section and rotates according to the loading operation and the ejecting operation of a disk caused by abutment of the outer edge of the disk against a detecting pin; a single switch that is switched by the switch abutting section and thereby detects the loading start position, and also the inserting position of the disk; and a single photosensor that detects the inserting position of the disk with keeping the light intercepting condition thereof by either the light intercepting section or the disk and also detects the ejection end position when the light intercepting condition brought about by the disk has been released and then the light intercepting condition brought about by the light intercepting section is released.
    Type: Grant
    Filed: June 4, 2008
    Date of Patent: February 28, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yoshifumi Awakura, Takaharu Eguchi, Tatsunori Fujiwara, Daisuke Morimoto
  • Patent number: 8117629
    Abstract: A lever having an end rotatably supported by a rack is disposed, a long groove is formed in either another end of the lever or a base chassis and extends in a direction approximately perpendicular to a direction of transporting an optical pickup, a fulcrum member is disposed in either the base chassis or the other end and is rotatably and slidably engaged with the long groove, and to slide along the long groove when the optical pickup is transported, and a spring that always exerts a pushing force in a direction of rotating the lever with the other end being a fulcrum and with the end being a point of action to exert a pushing force of bringing the rack into contact a gear series upon the rack is disposed between a predetermined position of the base chassis and an intermediate position of the lever.
    Type: Grant
    Filed: August 7, 2008
    Date of Patent: February 14, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventors: Daisuke Morimoto, Takaharu Eguchi, Tatsunori Fujiwara, Yoshifumi Awakura
  • Publication number: 20110202937
    Abstract: A disc apparatus includes: a playback unit 1 provided with a conveying roller 5 and a disc guide 3 to be vertically movable with respect to an apparatus main body; a moving means for moving downward the conveying roller and the disc guide in amounts of travel which are different from each other to avoid contact of the roller and the guide with a disc 14 with interlocking an operation that the loaded disc 14 is moved downward to be mounted on a turntable 6; and a disc-guide-cum-position-regulating member 102 attached to the apparatus main body corresponding to a disc loading port such that the playback unit is restrained from moving to the disc loading port side.
    Type: Application
    Filed: May 15, 2009
    Publication date: August 18, 2011
    Inventors: Takaharu Eguchi, Yoshifumi Awakura, Akihito Onishi, Tatsunori Fujiwara, Akinori Tsukaguchi
  • Publication number: 20110161993
    Abstract: A disk device includes: a disk detecting member 17 pushed and moved by a disk; a rotation body 20 driven by the movement of the disk detecting member 17 to move a slide member 11; a tubular body 23 provided coaxially on the surface of the rotation body 20 and having an axially cutaway section; and an arm section 24 provided on the slide member 11 and abutted against the peripheral surface of the tubular body to cause the moving force exerted on the slide member 11 to act on the center of the rotation body 20.
    Type: Application
    Filed: September 25, 2009
    Publication date: June 30, 2011
    Inventors: Akinori Tsukaguchi, Tatsunori Fujiwara, Takaharu Eguchi, Akihito Onishi, Yoshifumi Awakura
  • Publication number: 20110100142
    Abstract: A disc device has a sliding member 16 that operates in response to a rotational force of the first partially toothless gear 13 to disconnect a power transmission system from a disc conveying roller, and a protruding portion 16a disposed on this sliding member 16 is brought into contact with a rising portion 17b of a rotary lever 17 at an initial position of the sliding member before the sliding member starts operating, so as to restrict a rotation of the rotary lever 17 in such a way that a pin 17a does not come into contact with a wall surface of a cam groove 13d.
    Type: Application
    Filed: July 13, 2009
    Publication date: May 5, 2011
    Inventors: Akihito Onishi, Takaharu Eguchi, Yoshifumi Awakura, Tatsunori Fujiwara, Akinori Tsukaguchi
  • Publication number: 20100205624
    Abstract: A lever having an end rotatably supported by a rack is disposed, a long groove is formed in either another end of the lever or a base chassis and extends in a direction approximately perpendicular to a direction of transporting an optical pickup, a fulcrum member is disposed in either the base chassis or the other end and is rotatably and slidably engaged with the long groove, and to slide along the long groove when the optical pickup is transported, and a spring that always exerts a pushing force in a direction of rotating the lever with the other end being a fulcrum and with the end being a point of action to exert a pushing force of bringing the rack into contact a gear series upon the rack is disposed between a predetermined position of the base chassis and an intermediate position of the lever.
    Type: Application
    Filed: August 7, 2008
    Publication date: August 12, 2010
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Daisuke Morimoto, Takaharu Eguchi, Tatsunori Fujiwara, Yoshifumi Awakura
  • Publication number: 20100180288
    Abstract: A disc device includes a conveying roller and a disc guide which are disposed in such a way as to be able to move upwardly and downwardly with respect to a main unit thereof, and a moving unit for downwardly moving said conveying roller and said disc guide by different amounts of travel respectively in synchronization with a downward movement of an inserted disc and placement of the disc on a turntable.
    Type: Application
    Filed: June 5, 2008
    Publication date: July 15, 2010
    Inventors: Takaharu Eguchi, Yoshifumi Awakura, Daisuke Morimoto, Tatsunori Fujiwara
  • Publication number: 20100175077
    Abstract: A disk reproducing apparatus includes a disk detecting lever that has a switch abutting section and a light intercepting section and rotates according to the loading operation and the ejecting operation of a disk caused by abutment of the outer edge of the disk against a detecting pin; a single switch that is switched by the switch abutting section and thereby detects the loading start position, and also the inserting position of the disk; and a single photosensor that detects the inserting position of the disk with keeping the light intercepting condition thereof by either the light intercepting section or the disk and also detects the ejection end position when the light intercepting condition brought about by the disk has been released and then the light intercepting condition brought about by the light intercepting section is released.
    Type: Application
    Filed: June 4, 2008
    Publication date: July 8, 2010
    Inventors: Yoshifumi Awakura, Takaharu Eguchi, Tatsunori Fujiwara, Daisuke Morimoto
  • Patent number: 7406006
    Abstract: A disk apparatus includes a plurality of stockers each for stocking a disk therein, a plurality of stocker moving mechanism arranged around the plurality of stockers, for, when stocking a disk in one of the plurality of stockers and when playing back a disk stocked in one of the plurality of stockers, moving the one of the plurality of stockers upward or downward, each of the plurality of stocker moving mechanism having small-diameter portions at upper and lower ends thereof, and an actuation member movably arranged in a gap between the small-diameter portion of one of the plurality of stocker moving mechanism and an inner surface of a wall of a housing.
    Type: Grant
    Filed: April 6, 2005
    Date of Patent: July 29, 2008
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Tatsunori Fujiwara
  • Publication number: 20050232093
    Abstract: A disk apparatus includes a plurality of stockers each for stocking a disk therein, a plurality of stocker moving mechanism arranged around the plurality of stockers, for, when stocking a disk in one of the plurality of stockers and when playing back a disk stocked in one of the plurality of stockers, moving the one of the plurality of stockers upward or downward, each of the plurality of stocker moving mechanism having small-diameter portions at upper and lower ends thereof, and an actuation member movably arranged in a gap between the small-diameter portion of one of the plurality of stocker moving mechanism and an inner surface of a wall of a housing.
    Type: Application
    Filed: April 6, 2005
    Publication date: October 20, 2005
    Inventor: Tatsunori Fujiwara
  • Publication number: 20050235298
    Abstract: A disk apparatus includes a plurality of stockers each for holding a disk therein, and a plurality of stocker moving mechanisms arranged around the plurality of stockers, for supporting the plurality of stockers, and for, when storing a disk in one stocker and when playing back a disk held by one stocker, moving the stocker upward or downward, wherein when inserting a disk into the disk apparatus or ejecting a disk from the disk apparatus, the plurality of stocker moving mechanisms support one stocker in which the inserted disk is to be stored or which holds the disk to be ejected so that the stocker is inclined downward from its end portion on a back side of the disk apparatus toward its other end portion on a front side of the disk apparatus via which the disk is inserted or ejected.
    Type: Application
    Filed: April 14, 2005
    Publication date: October 20, 2005
    Inventor: Tatsunori Fujiwara
  • Patent number: 6842907
    Abstract: A MD loading mechanism for a multidisk MD reproducing apparatus capable of storing a plurality of MDs and of reproducing information recorded on the plurality of MDs successively comprises: a plurality of cartridge holders for holding MD cartridges therein, respectively; a MD cartridge storage unit for storing the plurality of cartridge holders therein in a stack so that the back end surfaces of the MD cartridges held within the cartridge holders can be seen from outside, provided with a plurality of insertion slots through which the MD cartridges are inserted in the cartridge holders and cartridge holder locking means for locking the cartridge holders within the MD cartridge storage unit; and a cartridge holder transfer means for transferring the cartridge holder holding a desired MD cartridge from the MD cartridge storage unit to the MD reproducing apparatus.
    Type: Grant
    Filed: April 14, 2003
    Date of Patent: January 11, 2005
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yasuyuki Nakanishi, Koutarou Oka, Kei Shirahata, Shigehiro Itou, Tatsunori Fujiwara
  • Patent number: 6760914
    Abstract: A MD loading mechanism for a multidisk MD reproducing apparatus capable of storing a plurality of MDs and of reproducing information recorded on the plurality of MDs successively comprises: a plurality of cartridge holders for holding MD cartridges therein, respectively; a MD cartridge storage unit for storing the plurality of cartridge holders therein in a stack so that the back end surfaces of the MD cartridges held within the cartridge holders can be seen from outside, provided with a plurality of insertion slots through which the MD cartridges are inserted in the cartridge holders and cartridge holder locking means for locking the cartridge holders within the MD cartridge storage unit; and a cartridge holder transfer means for transferring the cartridge holder holding a desired MD cartridge from the MD cartridge storage unit to the MD reproducing apparatus.
    Type: Grant
    Filed: January 23, 2002
    Date of Patent: July 6, 2004
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yasuyuki Nakanishi, Koutarou Oka, Kei Shirahata, Shigehiro Itou, Tatsunori Fujiwara
  • Patent number: 6757234
    Abstract: A disk device includes a lock mechanism for displacing the entirety of a playing section supported through a shock-absorbing member on an outer chassis towards a disk insertion mouth by the movement of a cam flap 112 which performs loading and ejection operations and which forms a section of the playing section. The lock mechanism fixes and locks the playing section by pressing a portion of the playing section against a wall component of the outer chassis situated on a side of the disk insertion mouth.
    Type: Grant
    Filed: January 2, 2001
    Date of Patent: June 29, 2004
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Tatsunori Fujiwara
  • Patent number: 6751179
    Abstract: A supplementary roller is disposed on the end of a disk guiding section 71 so that the outer face 72c of the cylindrical shaped section 72b of the supplementary roller is placed on the conveying roller 73 side by the protruding section 71a formed on disk guiding section 71.
    Type: Grant
    Filed: October 19, 1999
    Date of Patent: June 15, 2004
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Tatsunori Fujiwara, Kazutoshi Taniguchi, Shigeki Asai, Takaharu Eguchi, Takao Morimoto
  • Publication number: 20030174592
    Abstract: A MD loading mechanism for a multidisk MD reproducing apparatus capable of storing a plurality of MDs and of reproducing information recorded on the plurality of MDs successively comprises: a plurality of cartridge holders for holding MD cartridges therein, respectively; a MD cartridge storage unit for storing the plurality of cartridge holders therein in a stack so that the back end surfaces of the MD cartridges held within the cartridge holders can be seen from outside, provided with a plurality of insertion slots through which the MD cartridges are inserted in the cartridge holders and cartridge holder locking means for locking the cartridge holders within the MD cartridge storage unit; and a cartridge holder transfer means for transferring the cartridge holder holding a desired MD cartridge from the MD cartridge storage unit to the MD reproducing apparatus.
    Type: Application
    Filed: April 14, 2003
    Publication date: September 18, 2003
    Applicant: Mitsubish Denki Kabushiki Kaisha
    Inventors: Yasuyuki Nakanishi, Koutarou Oka, Kei Shirahata, Shigehiro Itou, Tatsunori Fujiwara
  • Patent number: 6584055
    Abstract: A disk device is provided with an MD carrying mechanism which uptakes an MD 24, places the MD 24 on a turntable, and performs the ejection of the MD 24 from the turntable by the displacement of the holder drawing lever 39 which forms part of a linking mechanism when the cartridge of the MD 24 is inserted into an MD holder. The disk device also comprises a clamp lever avoidance mechanism which refuges the clamp lever 17, which is used for clamping the CD 200, to a position which does not interfere with the uptake and ejection of the MD during uptake and ejection of the MD by the MD carrying mechanism.
    Type: Grant
    Filed: October 10, 2000
    Date of Patent: June 24, 2003
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Takao Morimoto, Masao Sato, Tatsunori Fujiwara