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: 6538970
    Abstract: A disk device is comprised of a CD conveying mechanism which performs the uptake and ejection of CDs by a conveying roller 11. An MD conveying mechanism drives a clamp lever rotating mechanism which performs the refuge of the clamp lever 17 from an initial position and the return of the clamp lever 17 to an initial position by being driven by a CD loading drive motor. A CD is clamped by a clamp mechanism when the CD is loaded onto a fixed position in the device and directed to a turntable. When an MD 24 is loaded or ejected, the MD conveying mechanism drives the refuge or return of the clamp lever 17. The placement of an MD 24 on a turntable is performed by an MD placing mechanism which is driven as a result of an MD 24 being taken up to a fixed position in the device.
    Type: Grant
    Filed: October 10, 2000
    Date of Patent: March 25, 2003
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Tatsunori Fujiwara, Takao Morimoto, Masao Sato
  • Patent number: 6469972
    Abstract: A disk device comprises first and second disk selection projections 102, 103 which regulate an angle of the disk conveyed to a small or large disk positioning recess 121, 122 on the basis of an outer radius of the disk. The first and second disk selection projections have tapered faces 102a, 103a provided at fixed intervals on a disk guiding face 101a facing the conveying roller 111. The disk device further comprises steps 121a, 122a for positioning the small disk 201 or the large disk 200 having an angle regulated in accordance with the outer radius to the small disk positioning recess 121 or to the large disk positioning recess 122.
    Type: Grant
    Filed: September 26, 2000
    Date of Patent: October 22, 2002
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Takao Morimoto, Masao Sato, Tatsunori Fujiwara
  • Patent number: 6445666
    Abstract: A disk device is includes first support shaft which supports a retaining arm, retaining a second turntable, to reciprocate vertically and a second support arm which supports the retaining arm to rotate and refuge horizontally so that the second turntable which supports a second disk which is not stored in a cartridge and which transmits a rotational force to a second disk can be loaded and separated from a first turntable which supports a first disk and which transmits a rotational force to a first disk.
    Type: Grant
    Filed: September 26, 2000
    Date of Patent: September 3, 2002
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Masao Sato, Atsushi Michimori, Takeshi Inatani, Masaaki Takeshima, Tatsunori Fujiwara
  • Patent number: 6434102
    Abstract: A disk device is comprised of a feed roller displacement mechanism which displaces a position of a feed roller 11 to a position lower than a position when a CD 200 is inserted. When a CD 200 is ejected from the turntable, the position of the feed roller 11 displaced downwardly is returned to an initial insertion position.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: August 13, 2002
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Tatsunori Fujiwara, Takao Morimoto, Masao Sato
  • Patent number: 6430145
    Abstract: A disk holding device supports a disk as a recording medium.
    Type: Grant
    Filed: October 12, 1999
    Date of Patent: August 6, 2002
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Takao Morimoto, Tatsunori Fujiwara, Masaki Kobayashi
  • Patent number: 6414929
    Abstract: A flexible engagement section 58e is provided on a slider rack 58 in order to return a slider lock 70 to an initial position with a slider rack 58 when a disk D (ejection operation period) is being ejected from a turntable. The flexible engagement section 58e is pushed towards the slider lock and a cam section 2a is formed on the chassis which engages with the engagement section 70f of the slider lock 70.
    Type: Grant
    Filed: May 19, 2000
    Date of Patent: July 2, 2002
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Tatsunori Fujiwara
  • Publication number: 20020064103
    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: January 23, 2002
    Publication date: May 30, 2002
    Applicant: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yasuyuki Nakanishi, Koutarou Oka, Kei Shirahata, Shigehiro Itou, Tatsunori Fujiwara
  • Publication number: 20020041560
    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: Application
    Filed: October 19, 1999
    Publication date: April 11, 2002
    Inventors: TATSUNORI FUJIWARA, KAZUTOSHI TANIGUCHI, SHEGEKI ASAI, TAKAHARU EGUCHI, TAKAO MORIMOTO
  • Patent number: 6359854
    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 30, 1999
    Date of Patent: March 19, 2002
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yasuyuki Nakanishi, Koutarou Oka, Kei Shirahata, Shigehiro Itou, Tatsunori Fujiwara
  • Publication number: 20010001267
    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: Application
    Filed: January 2, 2001
    Publication date: May 17, 2001
    Inventor: Tatsunori Fujiwara
  • Patent number: 6081494
    Abstract: A disc device having a floating base supported by a chassis through a plurality of elastic members, a holder which is supported on the floating base so as to be able to move vertically with respect to the floating base, and into which a disc cartridge is inserted, a slider, slidably disposed so as to move in directions of inserting and discharging a disc cartridge into and out of the disc device, for holding and carrying a disc cartridge inserted thereinto, and a driving arm, one end part of which is rotatably supported on an axis, and another end part of which can be engaged with the slider for inserting and discharging the disc cartridge. Furthermore, the device having a pair of slide plates slidably fixed on the chassis, for securing the floating base to the chassis and for releasing the floating base from the chassis, a pair of links for sliding the pair of slide plates, and a rotary member for rotating the driving arm so as to drive the slider and for driving the pair of links.
    Type: Grant
    Filed: July 8, 1996
    Date of Patent: June 27, 2000
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Takao Morimoto, Shigeki Asai, Takayuki Niioka, Tatsunori Fujiwara
  • Patent number: 6078553
    Abstract: A disc device including a floating base supported by a chassis through a plurality of elastic members, a holder which is supported on the floating base so as to be able to move vertically with respect to the floating base, and into which a disc cartridge is inserted, a slider, slidably disposed so as to move in directions of inserting and discharging a disc cartridge into and out of the disc device, for holding and carrying a disc cartridge inserted thereinto, and a switch lever, pivotably supported on the holder, for detecting that a disc cartridge is inserted correctly. A shutter opener slidably is disposed on the holder so as to be able to slide in directions of inserting and discharging the disc cartridge into and out of the holder, the shutter opener having a pair of grooves engaging pins fixed to said holder, the shutter opener having a projecting portion for opening a shutter of the disc cartridge carried by the slider.
    Type: Grant
    Filed: March 18, 1998
    Date of Patent: June 20, 2000
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Takayuki Niioka, Tatsunori Fujiwara, Takao Morimoto, Shigeki Asai
  • Patent number: 5974017
    Abstract: A disc device including a floating base supported by a chassis through a plurality of elastic members, a holder which is supported on the floating base so as to be able to move vertically with respect to the floating base, and into which a disc cartridge is inserted, a slider, slidably disposed so as to move in directions of inserting and discharging a disc cartridge into and out of the disc device, for holding and carrying a disc cartridge inserted thereinto, and a switch lever, pivotably supported on the holder, for detecting that a disc cartridge is inserted correctly. The slider comprises a wrong-insertion preventing lug projecting inwardly from the slider, which can be engaged in a groove formed on one edge of a disc cartridge when the disc cartridge is inserted into the holder, and the switch level has a free end portion which is positioned outside a free end part of the wrong-insertion preventing lug.
    Type: Grant
    Filed: July 8, 1996
    Date of Patent: October 26, 1999
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Takayuki Niioka, Tatsunori Fujiwara, Takao Morimoto, Shigeki Asai
  • Patent number: 5953307
    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 7, 1997
    Date of Patent: September 14, 1999
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yasuyuki Nakanishi, Koutarou Oka, Kei Shirahata, Shigehiro Itou, Tatsunori Fujiwara
  • Patent number: 5898658
    Abstract: A disc device including a floating base supported by a chassis through a plurality of elastic members, a holder which is supported on the floating base so as to be able to move vertically with respect to the floating base, and into which a disc cartridge is inserted, a slider, slidably disposed so as to move in directions of inserting and discharging a disc cartridge into and out of the disc device, for holding and carrying a disc cartridge inserted thereinto, and a switch lever, pivotably supported on the holder, for detecting that a disc cartridge is inserted correctly. A holder is rotatably engaged with the holder arm and accepts a disc cartridge inserted thereto, wherein when replaying the disc cartridge held in the holder, the disc cartridge is loaded onto the floating base by rotating the holder with respect to the holder arm and rotating the holder arm with respect to the floating base.
    Type: Grant
    Filed: March 18, 1998
    Date of Patent: April 27, 1999
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Takayuki Niioka, Tatsunori Fujiwara, Takao Morimoto, Shigeki Asai
  • Patent number: 5881040
    Abstract: A disc device comprises a floating base supported by a chassis through a plurality of elastic members, a holder which is supported on the floating base so as to be able to move vertically with respect to the floating base, and into which a disc cartridge is inserted, a slider, slidably disposed so as to move in directions of inserting and discharging a disc cartridge into and out of the disc device, for holding and carrying a disc cartridge inserted thereinto, a turn table disposed on the floating base and rotationally driven by a motor, onto which a disc accommodated within the disc cartridge is loaded, an optical pickup disposed in the floating base, for reading information from the disc which is rotated by the turn table, and a protrusion projecting from the slider to the floating base, the protrusion being brought into contact with the floating base, when the slider undergoes displacement toward the floating base, so as to prevent the slider from coming into contact with either the turn table or the optic
    Type: Grant
    Filed: July 8, 1996
    Date of Patent: March 9, 1999
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Takayuki Niioka, Tatsunori Fujiwara, Takao Morimoto, Shigeki Asai
  • Patent number: 5835474
    Abstract: A disk device includes a chassis, a replay unit for supporting a disk placed within the chassis, rotating the disk, and reading data from the rotating disk, a vibration-isolating unit for holding the replay unit by connecting the replay unit to the chassis and for isolating the replay unit from vibrations, a carrying unit for carrying the disk between a disk inlet and outlet formed on the chassis and a replay position where the disk is to be fixed in the replay unit, a motor for driving the carrying unit, and a flexible printed circuit (FPC). The FPC is mounted to one lateral surface of the motor and is electrically connected to the motor. The FPC has a projecting portion which projects from an upper surface of the motor toward one surface of the disk fixed in the replay unit. The projecting portion of the FPC is adapted to be brought into contact with the disk to prevent the disk from coming into contact with the motor when the disk moves closer to the motor.
    Type: Grant
    Filed: May 2, 1997
    Date of Patent: November 10, 1998
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Takaharu Eguchi, Shigeki Asai, Takayuki Niioka, Tatsunori Fujiwara, Masaki Kobayashi
  • Patent number: 5831965
    Abstract: A cartridge changing device includes a mechanism for restricting the rotation of a loading hook engaged with an inserted cartridge when discharging the cartridge from a holder so that the cartridge does not slide out of the holder and fall out of the device. The holder is movable from a standby position where a cartridge is inserted to a play position where the cartridge can be played. A rotatably disclosed loading hook is engagable with the cartridge inserted into the holder to hold the cartridge. A cartridge transfer mechanism stops the cartridge at a stop position after ejection where the cartridge is ejected out of the holder by restricting a reverse rotation of the loading hook in a direction of releasing the cartridge after ejection by pushing an eject lever.
    Type: Grant
    Filed: October 17, 1996
    Date of Patent: November 3, 1998
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Tatsunori Fujiwara, Takashi Matsuda, Yasuyuki Nakanishi, Koutarou Oka, Kei Shirahata, Shigehiro Itoh
  • Patent number: 5790507
    Abstract: A cartridge changing device comprises a plurality of insertion detecting switches each for detecting an insertion of a cartridge into each holder. If a cartridge is detached from one holder due to a careless operation by an user during a movement of the holder, the cartridge changing device detects the detachment of the cartridge and then putts the holder back into position, thereby preventing damage to the device and cartridge. Furthermore, when a cartridge is inserted into a holder free of a cartridge through an insertion opening of another holder, in which another cartridge is being played, lies just above the former holder in a downward and slanting direction, projecting parts of the former holder, which are inserted into square holes of the open/close door, receive the front end of the inserted cartridge. Thus, the projecting parts prevent the open/close door from being bent.
    Type: Grant
    Filed: September 29, 1995
    Date of Patent: August 4, 1998
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Tatsunori Fujiwara, Takashi Matsuda, Yasuyuki Nakanishi, Koutarou Oka, Kei Shirahata, Shigehiro Itoh
  • Patent number: 5748406
    Abstract: A rotational driving apparatus for disks includes a motor mounting base, a motor attached to the motor mounting base, a turn table made of a non-magnetic material and attached to a rotational shaft of the motor, for supporting a disk thereon, a turn table magnet disposed on the turn table, for absorbing the disk placed on the turn table, and a magnetic plate member disposed on the motor mounting base and under the turn table, thereby generating a transverse force exerted on the rotational motor shaft due to a magnetic force of the turn table magnet which acts on the magnetic plate member so as to tilt the rotational motor shaft.
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: May 5, 1998
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Takao Morimoto, Tatsunori Fujiwara