Control Of Relative Speed Between Carriers Patents (Class 360/73.02)
  • Patent number: 9959907
    Abstract: A computer-implemented method can include displaying, within a user interface in a digital media system, a media pane, and a project pane, displaying, within the media pane, a thumbnail group representing a media item, the thumbnail group comprising one or more thumbnails, a thumbnail comprising a plurality of frames, enabling a user to select, from the thumbnail group, a frame of the media item, and upon detecting that the user has selected a frame, creating a group of frames, the group of frames including the selected frame and one or more adjacent frames.
    Type: Grant
    Filed: August 4, 2011
    Date of Patent: May 1, 2018
    Assignee: Apple Inc.
    Inventors: Randy Ubillos, Greg Gilley
  • Patent number: 9025261
    Abstract: A mechanism is provided for determining storage device speed based on a ratio of data compression. A bandwidth (B) is identified between a storage device accessing storage medium and a host application requesting access to data on the storage medium. A host side transfer rate is identified, where the host side transfer rate (HSTR) is a rate of data transfer between the host application and the storage device. For each data set in a set of data sets of a record, a ratio of data compression (R) is identified for the data set; a compression considered host side transfer rate (CCHSTR) is determined; and the storage device speed is set to the compression considered host side transfer rate (CCHSTR) for transmitting the data set to the host application.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: May 5, 2015
    Assignee: International Business Machines Corporation
    Inventors: Tohru Hasegawa, Yutaka Oishi
  • Publication number: 20150015987
    Abstract: A data storage system controller designates critical drives for staggered spin up and other, non-critical drives for spin up only when the controller notifies the appropriate expander. Each expander in the data storage system maintains configuration information for each PHY of the expander and reports completion of spin up when all of the drives designated “staggered spin up” have been spun up. Alternatively, an expander maintains PHY configuration data, designating each PHY as “staggered spin up,” “host notify” or “disabled.” At boot time, only devices connected to PHYs designated “staggered spin up” are spun up in cycles before reporting spin up completion to a host device.
    Type: Application
    Filed: July 29, 2013
    Publication date: January 15, 2015
    Applicant: LSI Corporation
    Inventors: Naveen Krishnamurthy, Naresh Madhusudana
  • Patent number: 8853985
    Abstract: Systems, methods, and other embodiments associated with back-EMF detection for motor control are described. In an embodiment, an apparatus includes a drive circuit configured to apply excitation signals to respective inputs of a motor, a signal inhibit circuit configured to convey a signal to inhibit application of the excitation signals during an interval, and a measuring circuit configured to measure a back-electromotive force (EMF) signal crossing a reference signal during the interval.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: October 7, 2014
    Assignee: Marvell World Trade Ltd.
    Inventors: Ravishanker Krishnamoorthy, Foo Leng Leong, Edy Susanto
  • Publication number: 20140268402
    Abstract: An array may comprise a plurality of disk drives and a controller coupled to the plurality of drives. The controller may be configured to initiate spin-up of one or more first disk drives of the array; determine when each of the first disk drive(s) of the array for which spin-up was initiated reaches a predetermined spin rate that is less than a target spin rate at which the disk drive is ready to process data access commands; and initiate spin-up of one or more second disk drives of the array as the first disk drive(s) is determined to have reached the predetermined spin rate.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 18, 2014
    Applicant: Western Digital Technologies, Inc.
    Inventor: Western Digital Technologies, Inc.
  • Publication number: 20140029132
    Abstract: A method and system for manipulating a spin state of each disk in a drive array is disclosed. In one embodiment, a method includes monitoring input/output (I/O) requests to each disk drive in a disk array and identifying any disk drive as an inactive disk drive based on a number of I/O requests directed to said any disk drive for a given time interval. The method further includes moving data from the inactive disk drive to an active disk drive having a free disk space to store the data and updating metadata associated with the data using a log-structured file system for the disk array. Further, the method includes manipulating a spin state of the inactive disk drive by spinning down the inactive disk drive to conserve power. Furthermore, the method includes redirecting subsequent I/O requests for the inactive disk drive to the active disk drive by accessing the metadata of the log-structured file system.
    Type: Application
    Filed: October 7, 2013
    Publication date: January 30, 2014
    Applicant: NetApp, Inc.
    Inventor: Sridhar Balasubramanian
  • Patent number: 8634156
    Abstract: In a storage system, when power supply to HDDs is instantaneously interrupted, a spin up controller of a magnetic disk apparatus spins up the HDDs. On the other hand, based on a response for an access to the HDDs in the magnetic disk apparatus, when detecting that the HDDs as an access destination are spun down, a spin up controller of a control apparatus spins up the HDDs. When a certain number of the HDDs or more are spun down, a separate controller does not permit the magnetic disk apparatus to be used for a given length of time. While the magnetic disk apparatus is not permitted to be used, the HDDs are spun up by using the spin up controller of the magnetic disk apparatus.
    Type: Grant
    Filed: February 7, 2012
    Date of Patent: January 21, 2014
    Assignee: Fujitsu Limited
    Inventors: Akira Sampei, Tsunemichi Harada, Hiroaki Sato, Fumio Hanzawa
  • Patent number: 8405332
    Abstract: Systems, methods and computer program products for reducing or removing current spikes generated during a current recirculation period associated with phase switching in a spindle motor are described. In some implementations, the duty cycle of the drive signals applied to the windings of the spindle motor can be adjusted to reduce or eliminate the current surge resulting from current recirculation. In some implementations, the duty cycle of the drive signals during spin-up can be reduced based on a current limit, and the reduced duty cycle can then be used to drive the spindle motor taking into account of current surges in the supply current.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: March 26, 2013
    Assignee: Marvell International Ltd.
    Inventors: Ravishanker Krishnamoorthy, Foo Leng Leong
  • Patent number: 8401136
    Abstract: Disclosed is a semiconductor integrated circuit for generating a frequency division clock signal that approximates a desired clock signal without increasing a size thereof. The semiconductor integrated circuit masks, for each programmable cycle, a clock signal to be supplied to a transmission clock generation unit 100, thereby delaying a counting operation of a clock counter 101, and setting a timing for extending a transmission clock signal so as to cause a transmission rate of an average frequency of the transmission clock signal to approximate a predetermined transmission rate, wherein the transmission clock generation unit 100 divides a frequency of a clock source signal S301 that is a high-speed clock signal.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: March 19, 2013
    Assignee: Panasonic Corporation
    Inventors: Yoshiaki Fujiwara, Toshio Takita
  • Patent number: 8369040
    Abstract: To provide a storage control device capable of changing the rotation speed of storage devices. A plurality of hard disk drives 1 is mounted in the device mounting unit 7. The rotation speed control unit 2 detects the mounting location of each hard disk drive 1, and determines the rotation speed in accordance with the location of each hard disk drive 1. The rotation speeds of adjacent hard disk drives 1 are different from each other. The rotation speed control unit 2 changes the rotation speed of each hard disk drive 1 to the determined rotation speed.
    Type: Grant
    Filed: November 17, 2009
    Date of Patent: February 5, 2013
    Assignee: Hitachi, Ltd.
    Inventors: Yukiyoshi Takamura, Tomohisa Ogasawara, Yuji Hata
  • Patent number: 8095729
    Abstract: A plurality of disk drives in a disk drive array are synchronized. A synchronization signal is generated at a master disk drive. The synchronization signal is encoded as a radio frequency signal for transmission over a radio frequency network in communication with the plurality of disk drives. The transmitted radio frequency signal is received at a slave disk drive and decoded to recover the synchronization signal. Rotation of a disk in the slave disk drive is synchronized with rotation of a disk in the master disk drive based on the recovered synchronization signal.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: January 10, 2012
    Assignee: AT&T Intellectual Property I, LP
    Inventor: Michael Asher
  • Patent number: 7949825
    Abstract: Disk drives are synchronized by a timing signal generated in a master disk drive. The timing signal is transmitted over a power distribution network common to the disk drives. A slave drive receives the timing signal and synchronizes at least one disk based on the timing signal.
    Type: Grant
    Filed: April 10, 2007
    Date of Patent: May 24, 2011
    Assignee: AT&T Intellectual Property I, LP
    Inventor: Michael Asher
  • Patent number: 7461271
    Abstract: An optical recording apparatus with a small form factor optical drive for driving an optical record carrier is operable in different accessing modes having different data rates depending on the power mode of the recording apparatus. A Switch is provided in the recording apparatus for switching a controller for accessing the optical record carrier for reading data from or recording data to the optical record carrier. A first accessing mode has a low data rate and is used in a low power mode, while a second accessing mode has a high data rate and is used or allowed to be used in a high power mode.
    Type: Grant
    Filed: November 26, 2003
    Date of Patent: December 2, 2008
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Frank Cornelis Penning, Michael Adrianus Henricus Van Der AA, Bart Van Rompaey, Bart Michiel De Boer, Steven Broeils Luitjens
  • Patent number: 7092184
    Abstract: Using a “reference” sensor, a reference position is detected in a frame of reference that is moving along a predetermined path relative to the reference sensor. The reference position is used to derive a position-dependent indicator of a position-dependent “longitudinal” offset component (i.e. along the path). An output from the target sensor is monitored using a “target window” that is partially based on the position-dependent indicator.
    Type: Grant
    Filed: April 15, 2003
    Date of Patent: August 15, 2006
    Assignee: Seagate Technology LLC
    Inventors: Christopher Thomas Settje, David Louis Schell, Steven Alan Koldewyn, Reed Hanson, Timothy Francis Ellis
  • Patent number: 6969961
    Abstract: A method for controlling the rotation speed of a slave drive is described, where a reference rotation speed and a reference position is provided to a controller. The controller determines an estimated acceleration curve for the slave drive based on an instantaneous rotation speed, an instantaneous position and a maximum rotation-speed-dependent acceleration of the slave drive. The estimated acceleration curve for the slave drive is hereby determined so that after a compensation time, the rotation speed of the slave drive is equal to the reference rotation speed and the position of the slave drive is also equal to an expected reference position, which is determined by the controller based on the reference position, the reference rotation speed and the compensation time.
    Type: Grant
    Filed: September 7, 2004
    Date of Patent: November 29, 2005
    Assignee: Siemens Aktiengesellschaft
    Inventors: Tom Tolkmitt, Heino De Levie
  • Patent number: 6961238
    Abstract: A disk device comprises an HDD, dampers, PCB, and case that houses the HDD, dampers and PCB. The connection direction of the connector of the HDD differs from that of the connector of the PCB by an angle of 90°. A flat cable connecting the connectors is angled at two positions.
    Type: Grant
    Filed: May 9, 2003
    Date of Patent: November 1, 2005
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hiromu Aketagawa, Hiroshi Sawabe, Koichi Kobayashi
  • Patent number: 6819072
    Abstract: A spindle motor control circuit for controlling a motor; including a control circuit to control the motor during at least a low state, a pulse state and a high state, the motor braking during said low state, the control circuit receiving a flyback voltage from the motor during the pulse state and the control circuit receiving a reduced flyback voltage from the motor during the high state.
    Type: Grant
    Filed: March 26, 2001
    Date of Patent: November 16, 2004
    Assignee: Texas Instruments Incorporated
    Inventors: Bertram J. White, Kevin W. Ziemer
  • Patent number: 6788532
    Abstract: An apparatus (e.g. a portable computer) is provided which includes a peripheral device (e.g. a hard disk) and a bracket. The bracket maybe configured to rigidly attach the peripheral device to the apparatus. Further, the bracket may be configured to guide the peripheral device into electrical contact with the apparatus.
    Type: Grant
    Filed: February 28, 2003
    Date of Patent: September 7, 2004
    Assignee: LG Electronics Inc.
    Inventors: Myeong Kyoo Yang, Joung Sea Park, Dong Joon Choi
  • Patent number: 6771883
    Abstract: The travelling speed of a magnetic tape is controlled without considering a detection error caused by the slackening of a magnetic tape or the like. A microcomputer 10, immediately after starting a fast-feeding operation, starts a running rotation of feeding and winding reels 44, 45 (step S205), calculates an N value based on reel pulses and sets an acceleration target (step S210, S215) and simultaneously reads the N value immediately before the previous stop of the rotation from RAM and compares the read N value with the current N value (step S225, S230), prohibits the acceleration of the feeding and winding reels 44, 45 after confirming that the error does not fall within 25% (step S235) whereby when the videotape is rotated to the leader or the trailer, the videotape is prevented from being applied with an excessive load so that damages on the videotape can be reduced.
    Type: Grant
    Filed: January 17, 2001
    Date of Patent: August 3, 2004
    Assignee: Funai Electric Co., Ltd.
    Inventor: Masahiro Abe
  • Patent number: 6617817
    Abstract: A power driver for driving a signal on a load using voltage-mode driver. A system processor generates commands indicating a programmed drive signal desired from the voltage-mode driver. A lead compensator determines a compensated command to compensate for an admittance function of the load. The compensated commands are coupled to the voltage-mode driver, such that the voltage-mode driver generates a voltage output based upon the compensated command.
    Type: Grant
    Filed: June 1, 2001
    Date of Patent: September 9, 2003
    Assignee: STMicroelectronics, Ltd.
    Inventor: John P. Hill
  • Patent number: 6603625
    Abstract: A multi-dimensional computer network is disclosed comprising a multi-dimensional network controller for interconnecting a plurality of computer devices, including a plurality of disk drives, communicating via a network protocol through a plurality of nodes, each node comprising more than two bi-directional ports for simultaneously transmitting data in multiple dimensions through the multi-dimensional computer network. At least one of the disk drives comprises a disk for storing data and an index mark, a spindle motor for rotating the disk, a head for reading the data and the index mark stored on the disk, an index mark detector for generating an index mark detect signal in response to the head reading the index mark, an interface for receiving a spindle sync signal from the multi-dimensional network controller through the network protocol, and a spindle synchronization circuit, responsive to the index mark detect signal, for synchronizing the rotation of the disk to the spindle sync signal.
    Type: Grant
    Filed: September 11, 2000
    Date of Patent: August 5, 2003
    Assignee: Western Digital Technologies, Inc.
    Inventors: Andrew D. Hospodor, Christopher L. Hamlin
  • Patent number: 6538840
    Abstract: A disc drive includes a base and a disc rotatably attached to the base. The disc drive also includes an actuator assembly rotatably attached to said base and a device for moving the actuator assembly. The actuator assembly includes a transducer head in a transducing relationship with respect to the disc. The disc drive includes a disc drive controller for controlling movement of the actuator during track follow and track seek operations. The disc drive controller computes a phase difference time when a command is generated to complete a seek. When a seek is performed, the disc drive controller computes the phase difference time. Then the controller monitors the actual seek time, and adjusts the phase difference time based on a comparison of the actual seek time with the computed phase difference time.
    Type: Grant
    Filed: April 19, 2000
    Date of Patent: March 25, 2003
    Assignee: Seagate Technology LLC
    Inventors: Douglas L. Seewald, Jack A. Mobley
  • Patent number: 6415349
    Abstract: A disk drive has a unified bus forming a signal path for transmitting register data, user data and servo sectors. The unified bus is connected between a channel circuit and a disk controller circuit. The channel circuit has an output stream engine which responds to and provides control signals to multiplex data on the unified bus at various times between demodulated user data, servo sector data and register data.
    Type: Grant
    Filed: January 24, 2000
    Date of Patent: July 2, 2002
    Assignee: Western Digital Technologies, Inc.
    Inventors: Richard W. Hull, Hoover K. Jung, Sanjay S. Mathur