Patents by Inventor Gyu-chan Jun

Gyu-chan Jun 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: 7327639
    Abstract: A hybrid head to record and reproduce high density data. The hybrid head to record and reproduce data includes an element to record and reproduce data which is formed at the back side of a slider. The element to record and reproduce data includes an energy source to supply energy required to heat a predetermined region of a recording medium to be data-recorded, a magnetic field applier to apply a magnetic field to the predetermined region of the recording medium heated by the energy supplied from the energy source, a data reproducer to reproduce data from the recording medium, a channel to allow the magnetic field supplier to transmit the energy supplied from the energy source to the predetermined region of the recording medium, a heat shield element to prevent heat from being transmitted from the channel to other elements around the channel, a write pole covering the heat shield element, and a magnetic field generator to generate a magnetic field to the write pole.
    Type: Grant
    Filed: March 31, 2003
    Date of Patent: February 5, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-seob Jang, Kun-ho Chu, Dae-sik Kim, Gyu-chan Jun, Young-min Cheong
  • Patent number: 7107604
    Abstract: A disk cartridge is provided. The disk cartridge includes a case for containing a disk and a transparent window installed to seal the case. An external light accesses the disk through the transparent window of the disk cartridge. However, foreign matter such as dust is prevented from entering the disk cartridge.
    Type: Grant
    Filed: December 31, 2001
    Date of Patent: September 12, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Gyu-chan Jun, Soon-kyo Hong, Dong-seob Jang, Young-min Cheong, Du-il Kim
  • Patent number: 7079455
    Abstract: An optical reading and writing system including a base; an optical disk rotatably mounted on the base; an optical pickup including an objective lens, focusing a light beam to form a light spot on a recording surface of the optical disk; an actuator arm mounted on the base such that the actuator arm can pivot in the radial direction of the optical disk by a voice coil motor; a load beam supported by the actuator arm, and capable of moving slightly up and down and in the radial direction of the optical disk by an external force; a flexure attached to the load beam, supporting a slider to enable the slider to contact the recording surface; and a driving unit mounted on free ends of the actuator arm and the load beam, providing a driving force in the radial direction to the free end of the load beam.
    Type: Grant
    Filed: February 6, 2001
    Date of Patent: July 18, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-min Cheong, Cheol-sung Yeon, Ho-cheol Lee, Dong-seob Jang, Gyu-chan Jun
  • Patent number: 7042816
    Abstract: An optical pickup apparatus for an optical disk drive records or reproduces data on or from an optical disk, includes an optical head section including an object lens focusing an incident light on the optical disk, a slider on which the object lens is mounted, wherein the slider floats over the optical disk by an air bearing generated between the optical disk and the slider, a bobbin on which the slider is mounted, and a flexure disposed between the slider and the bobbins elastically supporting the slider. A driving unit drives the slider in a tracking direction and a focusing direction. In the above construction, the slider floats over a recording surface of the optical disk due to an air bearing and a near field between the object lens and the optical disk can be controllably maintained.
    Type: Grant
    Filed: October 30, 2001
    Date of Patent: May 9, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-min Cheong, Byoung-young Bae, Dong-seob Jang, Gyu-chan Jun
  • Patent number: 6910218
    Abstract: In a slim type optical disc drive, an optical pickup unit and an optical pickup transport assembly are installed on a main base disposed in a housing having a lower case and an upper case. A spindle motor is mounted on a tray so as to slide in and out of the housing. A spindle motor printed circuit board is mounted on the tray, and a main printed circuit board is fixed to the lower case. A flexible printed circuit connects the spindle motor and main printed circuits boards. The tray includes a table which supports the spindle motor, and side frame bars located at sides of the tray and spaced apart from the table. A pair of guide ribs are arranged in the housing to guide the movement of the table. In the slim type optical disc drive, only the spindle motor is disposed on the tray.
    Type: Grant
    Filed: November 6, 2002
    Date of Patent: June 21, 2005
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dae-kyong Park, Bu-hyun Sung, Dong-seob Jang, Gyu-chan Jun
  • Patent number: 6847606
    Abstract: An air-bearing slider for an optical disk drive for recording/reproducing information onto/from an optical disk while floating and moving at a predetermined height from the rotatably installed optical disk due to a dynamic air pressure is disclosed. The air-bearing slider includes a slider main body having an objective lens installation hole formed through the slider main body so that an objective lens can be installed, and an opening formed through the slider main body at one side portion of the objective lens installation hole, so that air flow flowing under the slider main body can flow out through the opening via the objective lens installation hole when the slider is floating as a result of dynamic air pressure.
    Type: Grant
    Filed: April 17, 2001
    Date of Patent: January 25, 2005
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Cheol-sung Yeon, Dong-seob Jang, Gyu-chan Jun, Young-min Cheong
  • Patent number: 6801493
    Abstract: An optical pickup device including a slider on which an objective lens is mounted and which is elastically movably supported by a support member, an air bearing member provided in the slider so that a lifting force pushes the slider away from the disk according to air flow generated during rotation of the disc, and an actuator to change the position of the objective lens mounted on the slider in a focus direction relative to the disc. In the optical pickup device, the slider is lifted from a disk using a lifting force acting on the air bearing member and simultaneously the position of an objective lens is adjusted by a piezoelectric device to perform focus control. Therefore, collision between a disk and an objective lens is avoided, and a focal position is effectively controlled just by changing only the position of the objective lens, thereby increasing the reliability of a recording and/or reproducing operation.
    Type: Grant
    Filed: January 22, 2002
    Date of Patent: October 5, 2004
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-seob Jang, Sung-jin Lee, Gyu-chan Jun, Young-min Cheong
  • Patent number: 6738227
    Abstract: A negative pressure air bearing slider includes a pair of front rails having a predetermined air inlet passage interposed therebetween at the front side of the slider where air enters, a negative pressure rail disposed at the rear of the front rails and forming air outlet passages connected to the air inlet passage, and forming a negative pressure space where negative pressure is generated according to the flow of air at the rear thereof, and a rear rail disposed at the rear of the negative pressure space, where a magnetic head is installed. In the slider, a stepped portion protruding toward the air outlet passages is formed at the negative pressure rail.
    Type: Grant
    Filed: April 2, 2001
    Date of Patent: May 18, 2004
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-seob Jang, Gyu-chan Jun
  • Publication number: 20040081030
    Abstract: A hybrid head to record and reproduce high density data. The hybrid head to record and reproduce data includes an element to record and reproduce data which is formed at the back side of a slider. The element to record and reproduce data includes an energy source to supply energy required to heat a predetermined region of a recording medium to be data-recorded, a magnetic field applier to apply a magnetic field to the predetermined region of the recording medium heated by the energy supplied from the energy source, a data reproducer to reproduce data from the recording medium, a channel to allow the magnetic field supplier to transmit the energy supplied from the energy source to the predetermined region of the recording medium, a heat shield element to prevent heat from being transmitted from the channel to other elements around the channel, a write pole covering the heat shield element, and a magnetic field generator to generate a magnetic field to the write pole.
    Type: Application
    Filed: March 31, 2003
    Publication date: April 29, 2004
    Inventors: Dong-seob Jang, Kun-ho Chu, Dae-sik Kim, Gyu-chan Jun, Young-min Cheong
  • Publication number: 20030086358
    Abstract: In a slim type optical disc drive, an optical pickup unit and an optical pickup transport assembly are installed on a main base disposed in a housing having a lower case and an upper case. A spindle motor is mounted on a tray so as to slide in and out of the housing. A spindle motor printed circuit board is mounted on the tray, and a main printed circuit board is fixed to the lower case. A flexible printed circuit connects the spindle motor and main printed circuits boards. The tray includes a table which supports the spindle motor, and side frame bars located at sides of the tray and spaced apart from the table. A pair of guide ribs are arranged in the housing to guide the movement of the table. In the slim type optical disc drive, only the spindle motor is disposed on the tray.
    Type: Application
    Filed: November 6, 2002
    Publication date: May 8, 2003
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dae-kyong Park, Bu-hyun Sung, Dong-seob Jang, Gyu-chan Jun
  • Publication number: 20030053408
    Abstract: A disk cartridge is provided. The disk cartridge includes a case for containing a disk and a transparent window installed to seal the case. An external light accesses the disk through the transparent window of the disk cartridge. However, foreign matter such as dust is prevented from entering the disk cartridge.
    Type: Application
    Filed: December 31, 2001
    Publication date: March 20, 2003
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Gyu-chan Jun, Soon-kyo Hong, Dong-seob Jang, Young-min Cheong, Du-il Kim
  • Publication number: 20020186645
    Abstract: An optical pickup device including a slider on which an objective lens is mounted and which is elastically movably supported by a predetermined support member, an air bearing member provided in the slider so that a lifting force pushes the slider away from the disk according to air flow generated during rotation of the disc, and an actuator to change the position of the objective lens mounted on the slider in a focus direction relative to the disc. In the optical pickup device, the slider is lifted from a disk using a lifting force acting on the air bearing member and simultaneously the position of an objective lens is adjusted by a piezoelectric device to perform focus control. Therefore, collision between a disk and an objective lens can be avoided, and a focal position can be effectively controlled just by changing only the position of the objective lens, thereby increasing the reliability of a recording and/or reproducing operation.
    Type: Application
    Filed: January 22, 2002
    Publication date: December 12, 2002
    Inventors: Dong-seob Jang, Sung-jin Lee, Gyu-chan Jun, Young-min Cheong
  • Publication number: 20020075772
    Abstract: An optical pickup apparatus for an optical disk drive records or reproduces data on or from an optical disk, includes an optical head section including an object lens focusing an incident light on the optical disk, a slider on which the object lens is mounted, wherein the slider floats over the optical disk by an air bearing generated between the optical disk and the slider, a bobbin on which the slider is mounted, and a flexure disposed between the slider and the bobbins elastically supporting the slider. A driving unit drives the slider in a tracking direction and a focusing direction. In the above construction, the slider floats over a recording surface of the optical disk due to an air bearing and a near field between the object lens and the optical disk can be controllably maintained.
    Type: Application
    Filed: October 30, 2001
    Publication date: June 20, 2002
    Applicant: Samsung Electronics Co. Ltd.
    Inventors: Young-min Cheong, Byoung-young Bae, Dong-seob Jang, Gyu-chan Jun
  • Publication number: 20020018441
    Abstract: An air-bearing slider for an optical disk drive for recording/reproducing information onto/from an optical disk while floating and moving at a predetermined height from the rotatably installed optical disk due to a dynamic air pressure is disclosed. The air-bearing slider includes a slider main body having an objective lens installation hole formed through the slider main body so that an objective lens can be installed, and an opening formed through the slider main body at one side portion of the objective lens installation hole, so that air flow flowing under the slider main body can flow out through the opening via the objective lens installation hole when the slider is floating as a result of dynamic air pressure.
    Type: Application
    Filed: April 17, 2001
    Publication date: February 14, 2002
    Inventors: Cheol-sung Yeon, Dong-seob Jang, Gyu-chan Jun, Young-min Cheong
  • Publication number: 20020008940
    Abstract: A negative pressure air bearing slider includes a pair of front rails having a predetermined air inlet passage interposed therebetween at the front side of the slider where air enters, a negative pressure rail disposed at the rear of the front rails and forming air outlet passages connected to the air inlet passage, and forming a negative pressure space where negative pressure is generated according to the flow of air at the rear thereof, and a rear rail disposed at the rear of the negative pressure space, where a magnetic head is installed. In the slider, a stepped portion protruding toward the air outlet passages is formed at the negative pressure rail.
    Type: Application
    Filed: April 2, 2001
    Publication date: January 24, 2002
    Inventors: Dong-seob Jang, Gyu-chan Jun
  • Publication number: 20010055264
    Abstract: An optical reading and writing system including a base; an optical disk rotatably mounted on the base; an optical pickup including an objective lens, focusing a light beam to form a light spot on a recording surface of the optical disk; an actuator arm mounted on the base such that the actuator arm can pivot in the radial direction of the optical disk by a voice coil motor; a load beam supported by the actuator arm, and capable of moving slightly up and down and in the radial direction of the optical disk by an external force; a flexure attached to the load beam, supporting a slider to enable the slider to contact the recording surface; and a driving unit mounted on free ends of the actuator arm and the load beam, providing a driving force in the radial direction to the free end of the load beam.
    Type: Application
    Filed: February 6, 2001
    Publication date: December 27, 2001
    Inventors: Young-min Cheong, Cheol-sung Yeon, Ho-cheol Lee, Gyu-chan Jun