Patents by Inventor Yong-kyu Byun

Yong-kyu Byun 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: 20070097552
    Abstract: A hard disk drive (HDD) includes at least one data storage disk, a spindle motor to which the disk is mounted for rotating the disk, an actuator including a read/write head and a swing arm for moving the read/write head to a predetermined position on the disk for recording/reproducing data, a flexible printed circuit ribbon having a free bending portion and connected to the actuator for transmitting electrical signals to the actuator, and a bracket connecting the flexible printed circuit ribbon to a circuit board. The free bending portion extends over at least one part of the length of the flexible printed circuit ribbon and is thinner than other portions of the flexible printed circuit ribbon. Therefore, the flexible printed circuit ribbon offers minimal resistance to the rotation of the swing arm of the actuator due to its enhanced flexibility.
    Type: Application
    Filed: October 18, 2006
    Publication date: May 3, 2007
    Inventors: Haeng-soo Lee, Yong-kyu Byun
  • Publication number: 20070081275
    Abstract: An actuator and a hard disk drive (HDD) having the same. The actuator of the HDD includes a swing arm to rotate about a pivot and having a suspension with a read/write head mounted on a front end of the swing arm to record and reproduce data , a coil-supporting portion connected to a rear end of the swing arm rotate together with the swing arm to receive voice coil motor (VCM) coil , a magnet positioned above and under the VCM coil to face each other to face the VCM coil, and at least one swing-arm protrusion formed at the rear end of the swing arm to protrude toward the magnet and including a magnetic material so that a bias torque is produced due to an interaction between the at least one swing-arm protrusion and the magnet.
    Type: Application
    Filed: October 12, 2006
    Publication date: April 12, 2007
    Inventors: Jeong-il CHUN, Yong-kyu Byun, Cheol-soon Kim
  • Patent number: 7190549
    Abstract: A slim spindle motor and a micro-drive apparatus including the slim spindle motor are provided. In the spindle motor, a hub is rotatably mounted on a base plate by ball bearings. The hub is used to seat a disk thereon. A ring-shaped magnet is engaged to the outer boundary of the hub. A stator is formed by arranging a plurality of yokes in a round shape around the outer boundary of the ring-shaped magnet. The yokes include cores having curved ends to reduce the central axis offset between the yokes and the ring-shaped magnet. Most of the yokes include coils that cover the cores. Since the central axes of the yokes in the stator are made collinear with the central axis of the ring-shaped magnet, the slim spindle motor can operate stably.
    Type: Grant
    Filed: May 27, 2003
    Date of Patent: March 13, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yong-kyu Byun, Min-pyo Hong, Woo-sup Han
  • Patent number: 7187518
    Abstract: A flexible printed circuit (FPC), electrically connecting a spindle motor on a base of a disk drive with a printed circuit board (PCB) outside of the base, and a disk drive including the FPC, are provided. The FPC includes a wiring portion having one end connected to the spindle motor; a bonded portion connected to the other end of the wiring portion and attached to the base; electrode supports, each having a predetermined elasticity and extending from an outside edge of the bonded portion; a wiring disposed along the wiring portion and the bonded portion; and first electrodes disposed on the electrode supports and connected to the wiring. The first electrodes contact second electrodes disposed on the PCB due to the elasticities of the electrode supports. The disk drive allows the spindle motor to be electrically connected to the PCB using only the FPC, i.e., without using a separate connector.
    Type: Grant
    Filed: June 29, 2004
    Date of Patent: March 6, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Min-pyo Hong, Yong-kyu Byun, Jeong-seok Koh
  • Publication number: 20070047139
    Abstract: A spindle motor assembly includes a spindle motor having a shaft and a hub that rotates on the shaft, and a hard disk having a data storage medium mounted in the form of a whole disk, and a fastener attached to the center of a bottom surface of the disk-shaped data storage medium that faces the spindle motor. The fastener is a screw or a nut. In the case in which the fastener is a screw, a head of the screw is attached to the bottom surface of the hard disk, and the body of the screw is received in a screw hole in the upper portion of the shaft of the spindle motor. In the case in which the fastener is a nut, the nut is engaged with an external thread on an outer circumferential surface of the hub of the spindle motor.
    Type: Application
    Filed: July 28, 2006
    Publication date: March 1, 2007
    Inventors: Yong-kyu Byun, Min-pyo Hong, Cheol-soon Kim, No-yeol Park
  • Publication number: 20070008644
    Abstract: Provided are a method of calculating repeatable runout (RRO) of a hard disk drive (HDD) in a frequency domain, a method of calculating a compensation value using the RRO calculating method, and recording media used therefore. The method of calculating RRO in a disk with a plurality of tracks includes: calculating first set of frequency coefficients for representing the RRO by analyzing a position error signal (PES), which is sampled in a target track, in a frequency domain while a head follows the target track; and calculating the RRO using the first set of frequency coefficients.
    Type: Application
    Filed: June 29, 2006
    Publication date: January 11, 2007
    Inventors: Dong-ho Oh, Yong-kyu Byun, Sang-eun Baek, Jong-youp Shim
  • Publication number: 20060291087
    Abstract: A method and system are disclosed for compensating disturbance applied to a plant, such as a HDD component, controlled by a state control device having an estimator & controller. The estimator & controller is adapted to generate a first control signal in response to a state signal indicating an estimated state of the plant. A second control signal is generated by applying a transfer function H(s) having defined gain/frequency characteristics to a control signal derived from the first control signal. An overall control signal is generated in response to the second control signal and the control signal derived from the first control signal and applied to the plant.
    Type: Application
    Filed: June 26, 2006
    Publication date: December 28, 2006
    Inventors: Sang-min Suh, Sang-eun Baek, Jun-seok Shim, Yong-kyu Byun
  • Patent number: 7106583
    Abstract: Provided is a structure for mounting an embedded type disk drive in an electronic system having opposite surfaces corresponding to both surfaces of the disk drive. The structure includes a mounting damper coupled to a corner portion of the disk drive to protrude from either surface of the disk drive, and a mounting groove formed in each of the opposite surfaces of the electronic system at a position corresponding to the mounting damper. As the mounting damper is inserted in the mounting groove, the disk drive is mounted in the electronic system.
    Type: Grant
    Filed: July 9, 2004
    Date of Patent: September 12, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jeong-seok Koh, Min-pyo Hong, Yong-kyu Byun
  • Patent number: 7099100
    Abstract: An apparatus and method for controlling head loading in a disk drive including a displacement measuring unit measuring a vertical displacement of a disk, a rotational angle detecting unit detecting a rotational angle of a spindle motor, and a controller controlling the movement of an actuator to load a head on the disk while a vertical displacement of a portion of the disk on which the head is loaded is decreasing so that the disk separates farther from a position on which the head is parked. Therefore, the possibility of collision between the head and the disk during head loading is reduced, thereby preventing damage to the head and disk and improving the reliability of the disk drive.
    Type: Grant
    Filed: July 12, 2004
    Date of Patent: August 29, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yong-kyu Byun, Chung-Il Chun
  • Publication number: 20060171066
    Abstract: A disk holder for an off-line servo-track writer is installed at a driving motor of the off-line servo-track writer in a state in which a plurality of disks for information storage are assembled to the disk holder. The disk holder has a flange for supporting the plurality of disks, a mounting portion to be joined to the driving motor is provided at one side of the flange, and a hub is provided at the other side of the flange. A space into which air flows is formed in the hub, and the plurality of disks and a plurality of spacers for maintaining a gap between the plurality of disks are assembled around the outer circumference of the hub. A plurality of pressing members are installed at the hub to move back and forth in a radial direction of the hub.
    Type: Application
    Filed: January 30, 2006
    Publication date: August 3, 2006
    Inventors: Dong-ho Oh, Jae-hyuk Han, Yong-kyu Byun, Ja-choon Koo
  • Patent number: 7085106
    Abstract: An actuator latch apparatus for a data storage device includes a latch lever installed on a base plate of the data storage device capable of pivoting and having a first latch portion provided at one end portion of the latch lever, a spring connected to the other end portion of the latch lever and made of a shape memory alloy to allow the latch lever to pivot in a predetermined direction by being deformed according to application of electric power, and a second latch portion provided at an end portion of an actuator moving a read/write head to a predetermined position of a disk.
    Type: Grant
    Filed: January 13, 2006
    Date of Patent: August 1, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Min-pyo Hong, Yong-kyu Byun, Woo-sup Han, Cheol-soon Kim
  • Patent number: 7085105
    Abstract: An actuator latch apparatus for a data storage device includes a latch lever installed on a base plate of the data storage device capable of pivoting and having a first latch portion provided at one end portion of the latch lever, a spring connected to the other end portion of the latch lever and made of a shape memory alloy to allow the latch lever to pivot in a predetermined direction by being deformed according to application of electric power, and a second latch portion provided at an end portion of an actuator moving a read/write head to a predetermined position of a disk.
    Type: Grant
    Filed: May 27, 2003
    Date of Patent: August 1, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Min-pyo Hong, Yong-kyu Byun, Woo-sup Han, Cheol-soon Kim
  • Publication number: 20060132956
    Abstract: A disk writing apparatus includes: a temperature sensor sensing an ambient temperature of a disk; a sync mark generator generating a sync mark having a pattern when a writing temperature indicating an ambient temperature at which data is written on the disk is sensed, wherein the pattern of the sync mark corresponds to the sensed writing temperature; a writing controller outputting the writing temperature sensed by the temperature sensor to the sync mark generator; a multiplexer adding the sync mark generated by the sync mark generator to the data; and a writing unit writing the data to which the sync mark is added on the disk. Accordingly, error rates when data is written and when data is reproduced can be improved by optimally compensating for the disk writing temperature and the disk reproducing temperature using parameters of devices of an hard disk drive.
    Type: Application
    Filed: December 14, 2005
    Publication date: June 22, 2006
    Inventors: Yong-kyu Byun, Takao Sugawara
  • Publication number: 20060117558
    Abstract: A shipping comb for use when moving an actuator of a hard disk drive, the actuator including a swing arm installed on a base member of the hard disk drive capable of pivoting, at least a pair of load beams coupled to an end portion of the swing arm, and at least a pair of sliders respectively coupled to the load beams to face each other. The shipping comb includes a frame operative to be coupled to the actuator and capable of pivoting, a first finger provided at the frame and for maintaining an interval between the load beams by being inserted between the load beams, and a second finger provided at the frame and for preventing collision between the sliders by being inserted between the sliders.
    Type: Application
    Filed: August 11, 2005
    Publication date: June 8, 2006
    Inventors: Jeong-seok Koh, Haeng-soo Lee, Yong-kyu Byun
  • Publication number: 20060114613
    Abstract: An actuator latch apparatus for a data storage device includes a latch lever installed on a base plate of the data storage device capable of pivoting and having a first latch portion provided at one end portion of the latch lever, a spring connected to the other end portion of the latch lever and made of a shape memory alloy to allow the latch lever to pivot in a predetermined direction by being deformed according to application of electric power, and a second latch portion provided at an end portion of an actuator moving a read/write head to a predetermined position of a disk.
    Type: Application
    Filed: January 13, 2006
    Publication date: June 1, 2006
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Min-pyo Hong, Yong-kyu Byun, Woo-sup Han, Cheol-soon Kim
  • Publication number: 20060098332
    Abstract: Dampers are interposed between plural surfaces of an information storage device and facing surfaces of an electronic device to reduce shocks and vibrations applied to the information storage device mounted inside the electronic device. Each of the dampers includes portions contacting the electronic device, and portions contacting the information storage device, wherein the two portions are set apart on a plane from each other. Each of the dampers includes a flat platelike body part having a first surface facing the electronic device and a second surface facing the information storage device, a plurality of protrusions protruding from predetermined positions of the first surface of the body part and contacting the electronic device, and a plurality of second protrusions protruding from the second surface of the body part and contacting the information storage device, the plurality of second protrusions being set apart on a plane from the plurality of first protrusions.
    Type: Application
    Filed: November 9, 2005
    Publication date: May 11, 2006
    Inventors: Haeng-su Lee, Yong-kyu Byun
  • Publication number: 20060093245
    Abstract: A fluid dynamic bearing is constructed to support stably a rotating body to which a non-uniform force is applied, and a hard disk drive (HDD) employing the fluid dynamic bearing is provided. The fluid dynamic bearing includes a journal bearing part supporting a rotary shaft in a radial direction of the rotary shaft, a thrust part formed at one end of the rotary shaft, a thrust bearing part facing the thrust part and supporting the rotary shaft in a longitudinal direction of the rotary shaft, and a plurality of grooves formed on a surface of the thrust bearing part and/or the thrust part. The plurality of grooves include a first groove group including a plurality of grooves having the same shape and arrangement, and a second groove group adjacent to the first groove group and including at least one groove asymmetric with respect to the grooves of the first groove group.
    Type: Application
    Filed: October 21, 2005
    Publication date: May 4, 2006
    Inventors: Jae-hyuk Han, Dong-ho Oh, Yong-kyu Byun, Cheol-soon Kim, Jeong-seok Koh, Nam-hoon Lee, Ja-choon Koo
  • Publication number: 20060092574
    Abstract: An actuator arm of an actuator assembly includes a 4-bar linkage structure defined by a trapezoidal shaped opening formed between a front end of the actuator arm and a pivot shaft. A first rounded extension portion and a second rounded extension portion are formed at two corners adjacent to the pivot shaft of the opening, respectively, and a third rounded extension portion is formed at two corners adjacent to a front end of the opening, and hinges H1, H2, H3 and H4 are formed at the actuator arm by the first, second and third extension portions. Design factors determining a shape of the opening are optimized to meet the following relations for the structure of the 4-bar linkage: W(cos ??1)+Z(cos ??1)=?x=0, W sin ?+Z sin ?=?y=0.
    Type: Application
    Filed: November 2, 2005
    Publication date: May 4, 2006
    Inventors: Dong-ho Oh, Yong-kyu Byun, Cheol-soon Kim, Haeng-soo Lee
  • Publication number: 20060092573
    Abstract: A latch system for a hard disk drive and a method of forming the latch system are disclosed. The latch system includes an actuator on which a read/write head is installed, and a latch locking the actuator. The actuator and the latch each has a mass center and a pivot center, and a direction of the mass center of the latch on the basis of the pivot center of the latch is the same as a direction of the mass center of the actuator on the basis of the pivot center of the actuator.
    Type: Application
    Filed: July 6, 2005
    Publication date: May 4, 2006
    Inventors: Jeong-il Chun, Yong-kyu Byun, Min-pyo Hong, Dong-ho Oh, Byoung-gyou Choi
  • Publication number: 20060050431
    Abstract: Provided are a hard disk drive (HDD) assembly and a mobile phone employing the HDD assembly. The HDD assembly includes: a HDD including a base member, a cover member, a spindle motor installed on the base member, at least one data storage disk mounted on the spindle motor, and an actuator pivotably installed on the base member and moving a read/write head to a predetermined position on the disk; a printed circuit board (PCB) disposed beside the HDD and operating the HDD; and a mounting bracket mounted on an electronic device while accommodating the HDD and the PCB, and including a first accommodating space adapted to accommodate the HDD and a second accommodating space disposed beside the first accommodating space and adapted to accommodate the PCB.
    Type: Application
    Filed: June 17, 2005
    Publication date: March 9, 2006
    Inventors: Yong-kyu Byun, No-yeol Park, Min-pyo Hong, Sang-min Suh, Byoung-gyou Choi