Patents Represented by Attorney, Agent or Law Firm Jeffrey P. Aiello
  • Patent number: 6822691
    Abstract: A motion decision value provides a dependable estimate whether motion occurs in a given region of a video image in an interlaced video sequence. The motion detection is particularly applicable in the conversion from interlaced video to progressive video. An input first is fed to an absolute value former which computes a frame difference signal from a difference between the first field and the second field in one frame. A point-wise motion detection in the frame difference signal is then followed by a region-wise motion detection that combines the point-wise motion detection signal with an adjacent point-wise motion detection signal delayed by one field. The motion decision value is then computed from the region-wise motion detection signal and output for further processing in the video signal processing system, such as for choosing whether the spatially interpolated video signal value or the temporally interpolated video signal value should be used for the output.
    Type: Grant
    Filed: October 22, 2001
    Date of Patent: November 23, 2004
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yeong-Taeg Kim, Shin-Haeng Kim
  • Patent number: 6801384
    Abstract: A method, apparatus and computer program for performing a servo seek according to a voltage-constrained sinusoidal acceleration trajectory. In one embodiment, the apparatus comprises a hard disk drive which has a disk with a surface, spin motor, transducer, and an actuator arm to move a transducer across the surface of the disk. The apparatus further includes a controller that controls the actuator arm and to perform a seek having a length. The actuator arm moves the transducer across the surface of the disk with an essentially sinusoidal acceleration trajectory using a substantially constant voltage. In another embodiment, the substantially constant voltage is based on the maximum voltage from a power supply.
    Type: Grant
    Filed: August 22, 2001
    Date of Patent: October 5, 2004
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang Hoon Chu, Jun Seok Shim
  • Patent number: 6798422
    Abstract: A filtering method and filtering system is applied to an edge orientation map obtained from an edge direction detection system in order to keep accurate edge directions and filter out false edges or edges with wrong directions. If an edge direction does not have a certain minimum length, then that direction is filtered out and a default direction is provided. Additional assurances can be obtained by insuring that the edge direction has a certain minimum width. If an edge direction does not have the minimum width, then that edge direction is filtered out and the default direction is provided. A direction smoother can be applied to the directions in the edge orientation map to smooth the changing of neighboring edge directions. This process is found to be effective in improving the visual quality of an image that is interpolated based on edge directions.
    Type: Grant
    Filed: November 8, 2002
    Date of Patent: September 28, 2004
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Xianglin Wang
  • Patent number: 6791775
    Abstract: The present invention is a method and system to determine a quality of a head in a hard disk drive. The method comprises providing a disk having a at least one side with a plurality of tracks, writing on a predetermined track on the plurality of tracks and reading a profile of the predetermined track to provide a first profile value. The head is then moved to an adjacent track where it writes on the adjacent track. A profile of the predetermined track is then read to provide a second profile value. A quality of the head can then be determined based on the first and second values.
    Type: Grant
    Filed: October 15, 2001
    Date of Patent: September 14, 2004
    Assignee: Samsung Electronics, Co., Inc.
    Inventors: Zhaohui Li, Geng Wang, Keung Youn Cho
  • Patent number: 6791778
    Abstract: An apparatus, method and computer program product for a hard disk drive defect detection system. In one embodiment, a method of detecting defects on the surface of a disk having a plurality of tracks is recited. The method comprises reading, one or more times, the servo bits for a plurality of sectors and determining a burst measure for at least one sector, where the burst measure is a function of the burst signals for the sector. This method further comprises determining a reference value, where the reference value is a function of the burst signals of the plurality of sectors, and comparing the burst measure of at least one sector to the reference value to identify a potential defect. In one embodiment, a sector is mapped as defective where its burst measure differs from the reference value by at least 5 percent.
    Type: Grant
    Filed: September 13, 2001
    Date of Patent: September 14, 2004
    Assignee: Samsung Electronics Co., Inc.
    Inventors: Sang Hoon Chu, Jun Seok Shim, Seong Hwon Yu, Soo Il Choi
  • Patent number: 6791780
    Abstract: The present invention is a method and system to optimize a write channel in a hard disk drive. The method comprises providing a disk having a at least one side with a plurality of tracks, and selecting a target track from the plurality of tracks. Data is written at least once on a predetermined plurality of tracks adjacent to either side of the target track and on the target track. Data is also written a predetermined number of times on tracks immediately adjacent to the target track. Data written on the predetermined plurality of tracks adjacent to either side of the target track and on the target track is then read. The process then determines if a number of errors on the tracks is greater than a predetermined criteria, if so, a write current value of the write channel is decreased, otherwise the write current value is increased.
    Type: Grant
    Filed: October 15, 2001
    Date of Patent: September 14, 2004
    Assignee: Samsung Electronics Co., Inc.
    Inventors: Hae Jung Lee, Sang Lee, Keung Youn Cho, Ken Bovatsek
  • Patent number: 6778352
    Abstract: The present invention is a shock absorption mechanism for reducing the damage experienced by disk drives, including damage caused by a magnetic head contacting the surface of a magnetic disk, as a result of impact or shock forces experienced by the disk drive. In general, the invention is a means for partially isolating a disk assembly and a related actuator assembly from other parts of the disk drive. In the preferred embodiment the shock absorption mechanism isolates the disk assembly and the actuator assembly from the outer frame of a housing containing the disk assembly and the actuator assembly by establishing a shock energy dissipation and absorption region between a pair of isolation plates holding the disk assembly and the actuation assembly, and other parts of the disk drive.
    Type: Grant
    Filed: December 28, 2000
    Date of Patent: August 17, 2004
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yonkyu Byun, Sangeun Baek, Haesung Kwon, Pyongwon Yim
  • Patent number: 6771458
    Abstract: The inventors have discovered that aerodynamic forces contribute to disk fluttering. If the flow of air about these disk surfaces is unstable, the resulting aerodynamic forces can mechanically excite the disk surfaces, causing fluttering. The invention includes media enclosures constraining such aerodynamic effects, methods of making disk drives with these enclosures, the disk drives. This includes disk drives of at most 13 millimeters in height.
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: August 3, 2004
    Assignee: Samsung Electronics Co., LTD
    Inventors: Seong Hoon Kim, Tae Yeon Hwang, Tho Pham
  • Patent number: 6771451
    Abstract: A method for centering the disk of a disk stack assembly. The method includes the step of applying a torque to the disk stack and spinning the disks. Both the torque and the spinning speed are less than normal operating values. A series of radial forces may then be applied to the disk stack. The series of forces will cause the rotating disks to self center. The rotating disks are eventually spun down and a full torque is applied to the disk stack to secure the disks.
    Type: Grant
    Filed: September 4, 2001
    Date of Patent: August 3, 2004
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Frank Ivan Morris, Scott Tran, Joseph Chang
  • Patent number: 6765748
    Abstract: A method of interleaving servo information fields on a recording medium, and a corresponding recording medium having interleaved servo information fields, that reduce the amount of disk surface area needed for servo information, to thus increase disk surface area available for data storage. The track layout includes regular sector servo fields and reduced sector servo fields interleaved with data fields. The regular sector servo fields include servo correction information such as repetitive run-out (RRO) cancellation values. The servo correction information of the reduced sector servo field does not include servo correction information. The servo correction information of the reduced sector servo field is merged into the regular sector servo field.
    Type: Grant
    Filed: December 13, 2001
    Date of Patent: July 20, 2004
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Andrew B. Shu
  • Patent number: 6762902
    Abstract: A method, apparatus, or product for a rotating disk storage device. In one embodiment, the apparatus includes a disk, a spindle motor that rotates the disk, a transducer, an actuator arm that can move the transducer, and a controller. The controller can control the movement of the actuator arm to move the transducer across the disk surface from a first track to a second track, and determine a position error signal (PES) at one or more positions between the first and second tracks, where the PES includes a non-repeatable disturbance signal. The controller can iteratively generate a disturbance correction signal at the one or more positions based on the PES, combine the disturbance correction signal with the PES to minimize the non-repeatable disturbance signal to provide a corrected PES, and vary, at the one or more positions, the movement of the transducer as a function of the corrected PES.
    Type: Grant
    Filed: October 9, 2001
    Date of Patent: July 13, 2004
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Kok-Kia Chew
  • Patent number: 6762908
    Abstract: A disk drive that has an air deflector which deflects at least a portion of airflow away from an actuator arm assembly of the drive. The air flow is typically generated by a rotating disk of the disk drive.
    Type: Grant
    Filed: June 18, 2001
    Date of Patent: July 13, 2004
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Wilson Long, Woocheol Jeong, Kevin Tu
  • Patent number: 6753103
    Abstract: A disk for a hard disk drive. The disk includes a first layer of magnetic material located over a substrate, an intermediate layer located over the first magnetic layer and a second layer of magnetic material located over the intermediate layer. The second layer may include cobalt and chromium. The intermediate layer may include titanium. The first magnetic layer include iron, hafnium and nitrogen (FeHfN). This composition of the first magnetic layer shows higher saturation magnetization and lower roughness, and increases the nucleation field of the disk.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: June 22, 2004
    Assignee: Samsung Electronics Co. Ltd.
    Inventors: Sooyoul Hong, Daehoon Hong, Taekdong Lee, Hyung J. Lee
  • Patent number: 6754040
    Abstract: The inventors have found that by changing the outer wall shape of at least disk spacer, the air flow of the relevant inner region is disrupted, causing particulate adhesion to be minimized. The air flow disruption acts to blow more air through the inner region, effectively moving particles away from the inner region rather than retaining these particles. The inventors call disk spacers with outer wall shapes disrupting inner region air flow, screw-type spacers.
    Type: Grant
    Filed: February 20, 2002
    Date of Patent: June 22, 2004
    Assignee: Samsung Electronics Co., LTD
    Inventor: Seong Hoon Kim
  • Patent number: 6747843
    Abstract: The invention includes a method of A wipping part of the load ramp is a convex finger crossing the read-write head path of motion with respect to a lifting tab engagably moving across the loading ramp.
    Type: Grant
    Filed: March 26, 2002
    Date of Patent: June 8, 2004
    Assignee: Samsung Electronics Co., LTD
    Inventors: Vinod Sharma, Joseph Chang, Hyung Jai Lee
  • Patent number: 6744590
    Abstract: A method, apparatus, and computer program product for a hard disk drive servomechanism. In one embodiment, the apparatus comprises a disk which has a surface, a spindle motor that rotates the disk, a transducer which can write information onto the disk and read information from the disk, and an actuator arm that can move the transducer across the surface of the disk. The apparatus further includes a controller. The controller can determine a seek length from a first track to a second track, determine a seek time based on the seek length, scale the seek time in response to a velocity error between a calculated velocity and a design velocity for the seek length, and control the actuator arm to move the transducer across the disk surface from the first track to the second track using an acceleration trajectory.
    Type: Grant
    Filed: May 16, 2001
    Date of Patent: June 1, 2004
    Assignee: Samsung Electronics Co., Inc.
    Inventors: Sang Hoon Chu, Ju Il Lee, Jun Seok Shim, Won Goo Kim
  • Patent number: 6744597
    Abstract: An actuator beam that can be incorporated into an actuator arm assembly of a hard disk drive. The actuator beam may include a dynamic absorber that extends from a distal end of the beam. The dynamic absorber may attenuate any resonant displacement in the actuator beam induced by a shock load that is applied to the hard disk drive.
    Type: Grant
    Filed: October 29, 1999
    Date of Patent: June 1, 2004
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Tu Nguyen, Haeng Soo Lee, Woo-Sung Kim
  • Patent number: 6731468
    Abstract: A latch for securing an actuator arm of a hard disk drive. The latch has a catch portion that can engage a latch portion of the actuator arm. The latch also has a pusher portion and a crash stop portion that engage the actuator arm during movement into a latched position and prevent the latch from rebounding away from the arm. The pusher and crash stop portions eliminate the need for a separate crash stop in the disk drive. Eliminating the separate crash stop component reduces the complexity and cost for mass producing the disk drive.
    Type: Grant
    Filed: January 23, 2002
    Date of Patent: May 4, 2004
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kelly Williams, Ron Kirkish, Joseph Chang
  • Patent number: 6722901
    Abstract: A protective cap for an electrical connector of a hard disk drive. The connector is assembled to a hard disk drive that contains one or more electrical circuits. The protective cap can be placed onto the top of the electrical connector to prevent an electrostatic discharged onto the connector. The cap can therefore protect the electrical circuits from damage due to an electrostatic discharge onto the connector.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: April 20, 2004
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Youn Tai Kim, Sung Wook Kim, Gregory Tran
  • Patent number: 6724575
    Abstract: The present invention is a method and apparatus for providing an electrical substrate. The electrical substrate comprises a dielectric layer; and a first conductive layer attached to the dielectric layer, in which the first conductive layer has an elliptical cross-section. The electrical substrate may be used in a flexible circuit that connects the read/write head to electronic circuitry in a hard disk drive.
    Type: Grant
    Filed: November 15, 2000
    Date of Patent: April 20, 2004
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Eunkyu Jang