Recording-or Erasing-prevention Patents (Class 360/60)
  • Patent number: 10649682
    Abstract: Described is a deduplicated storage system that may perform a focused sanitization process by reducing the number of data storage containers that must be sanitized. The system leverages additional characteristics of the files that need to be sanitized such as an initial storage date (e.g. data breach date) of when a sensitive file (e.g. file to be sanitization) was actually stored on the deduplicated storage system. By maintaining a creation date of data containers, the system may limit sanitization to those containers having a creation date on or after the initial storage date of the sensitive file. Accordingly, the system is capable of performing a more focused overwriting of data thereby improving the overall efficiency of the sanitization process.
    Type: Grant
    Filed: October 6, 2017
    Date of Patent: May 12, 2020
    Assignee: EMC IP HOLDING COMPANY LLC
    Inventors: Ramprasad Chinthekindi, Shah Veeral, Abhinav Duggal
  • Patent number: 10622012
    Abstract: A data storage device is disclosed comprising a first disk comprising a first disk surface, a second disk comprising a second disk surface, an elevator actuator configured to actuate a head along an axial dimension relative to the first and second disks, a radial actuator configured to actuate the head radially over the first disk surface or the second disk surface, and a position sensor configured to generate a sinusoidal sensor signal representing a position of the head along the axial dimension. A crashstop_offset along the axial dimension is measured from a crashstop position of the elevator actuator to a zero crossing of the sinusoidal sensor signal.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: April 14, 2020
    Assignee: Western Digital Technologies, Inc.
    Inventors: Kuang-Yang Tu, Jenghung Chen, Lan V. Ngo
  • Patent number: 10474571
    Abstract: Example apparatus and methods provide improved reclamation, garbage collection (GC) and defragmentation (defrag) for data storage devices including solid state drives (SSD) or shingled magnetic recording (SMR) drives. An erasure code (EC) layer that facilitates logically or physically erasing data from the SSD or SMR as a comprehensive GC or defrag is added to the SSD or SMR. Erased data may be selectively recreated from the EC layer as needed. Pre-planned EC write zones may be established to further optimize GC and defrag. Recreated data may be written to selected locations to further optimize SSD and SMR performance. Erasure code data may be distributed to co-operating devices to further improve GC or defrag. Example apparatus and methods may also facilitate writing data to an SMR drive using tape or VTL applications or processes and providing a pseudo virtual tape library on the SMR drive.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: November 12, 2019
    Assignee: Quantum Corporation
    Inventors: Roderick B. Wideman, Don Doemer
  • Patent number: 10430090
    Abstract: According to one embodiment, a semiconductor device includes a non-volatile memory, a temperature measurement circuit that measures a temperature of the non-volatile memory, and a controller. The controller also writes information about the temperature which is measured by the temperature measurement circuit in the non-volatile memory together when writing data in the non-volatile memory. Further, the controller performs write-back processing of writing data, which is written at a temperature in a rewriting temperature range, back when the temperature measured by the temperature measurement circuit is not in the rewriting temperature range.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: October 1, 2019
    Assignee: TOSHIBA MEMORY CORPORATION
    Inventors: Daisuke Nakata, Yu Muraki
  • Patent number: 10347278
    Abstract: A data storage device is disclosed comprising a first actuator configured to actuate a first head over a first disk comprising a first plurality of tracks defined by first servo sectors, and a second actuator configured to actuate a second head over a second disk comprising a second plurality of tracks defined by second servo sectors. The first actuator is controlled based on the first servo sectors in order to first write data to the first disk, and the second actuator is controlled based on the second servo sectors in order to second write data to the second disk. The first writing is inhibited when a shock signal generated based on a shock sensor exceeds a first shock threshold, and the second writing is inhibited when the shock signal exceeds a second shock threshold different from the first shock threshold.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: July 9, 2019
    Assignee: Western Digital Technologies, Inc.
    Inventors: Toshihisa Kiyonaga, Peng Huang, Junya Takeda, Edward C. Sibal
  • Patent number: 10303601
    Abstract: One embodiment facilitates a write operation in a shingled magnetic recording device. During operation, the system receives, by a controller module of the device, a request to write first data, wherein the device has a plurality of bands with overlapping tracks for storing data. In response to determining that the first data is updated data corresponding to original data stored in a first band, the system appends the updated data to a second band with available storage space. The system merges the updated data with the original data.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: May 28, 2019
    Assignee: Alibaba Group Holding Limited
    Inventors: Shu Li, Xiaowei Jiang
  • Patent number: 10268383
    Abstract: Two or more read modes of a data storage system and device are defined. The data storage device is capable of concurrently reading from two or more tracks using two or more read transducers. The read modes utilize different numbers of the two or more read transducers while reading data. The read modes are selected based on an operating condition of the data storage system or device.
    Type: Grant
    Filed: September 6, 2016
    Date of Patent: April 23, 2019
    Assignee: Seagate Technology LLC
    Inventors: Mehmet Fatih Erden, Scott Warmka, Mark Allen Gaertner, Jon D. Trantham
  • Patent number: 10222396
    Abstract: An electronic device for visually representing an impact event is provided. The electronic device includes an accelerometer, a gyroscope, and a magnetometer for measuring its acceleration, angular rotation, and magnetic field intensity relative to its motion. Using any suitable filter, a normalization process is used to standardize readings from the accelerometer, gyroscope, and magnetometer. The electronic device also includes impact location and impact severity determination procedures executable by its processor from its memory module to provide an impact indicator or a visual representation of the impact which may indicate possible damage, shock or fracture incurred on the device. The impact indicator serves as a preview of impacts by displaying gradients of green, yellow and red depicted in increasing severity, i.e., from “no impact” event to “severe impact” event.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: March 5, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Alberto Iv Evangelista, Jose Mari Esguerra, Kyle Benedict Sy, Patrich Paolo Datu, Kohleen Fortuno, Joe-mar Chavez, Joseph Paulo Los Banos
  • Patent number: 10198727
    Abstract: A communication device has a processing unit, a transmit circuit, and an antenna. The processing unit generates a carrier signal and modifies the carrier signal based on a notch modulation procedure having notch delay and a notch width. The notch width is selected based on a desired modulation index. The resulting modulation signal is provided to the transmit circuit, which generates a wireless data signal that is transmitted by the antenna.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: February 5, 2019
    Assignee: Square, Inc.
    Inventors: Afshin Rezayee, Jason Binder, Emad Bidari
  • Patent number: 10109322
    Abstract: A data storage device that includes a housing and at least one data storage medium within the housing. The data storage device further includes an anti-shock system having at least one piezoelectric layer on a portion of the housing and at least one element electrically coupled to the at least one piezoelectric layer. The at least one element provides a deflection control signal to the at least one piezoelectric layer.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: October 23, 2018
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Hao Sun, Aravind Pitty, Xiong Liu
  • Patent number: 10103839
    Abstract: A method for forward error concealment encoding of a digital signal data stream including a sequence of individual digital samples, includes encoding one or more of the individual digital samples according to an encoding mode selected from a number of predetermined encoding modes in accordance with a value of the respective digital sample, wherein encoding includes determining an encoded digital sample as a combination of bits of the respective digital sample and a predetermined number of forward error concealment bits arranged into predetermined bit positions of the encoded digital sample in accordance with the selected encoding mode. A method for forward error concealment decoding of a digital signal data stream including a sequence of encoded individual digital samples is provided, and includes decoding one or more of the individual encoded samples into respective decoded digital samples according to a decoding mode selected from a number of predetermined decoding.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: October 16, 2018
    Assignee: ANT-ADVANCED NETWORK TECHNOLOGIES OY
    Inventors: Seppo Nikkila, Tom Lindeman
  • Patent number: 10091009
    Abstract: A broadcast transmitter and a method of processing broadcast data in the broadcast transmitter are disclosed. The method includes the steps of performing RS encoding and CRC encoding on mobile service data to build RS frames belonging to an ensemble, wherein each of the RS frames are mapped into data groups, wherein each of the data groups comprises known data sequences and a portion of FIC data including information for rapid mobile service acquisition, wherein the information for rapid mobile service acquisition includes transport stream identification information for identifying a mobile broadcast carrying a mobile service that includes the mobile service data and C/N indication information for indicating whether the FIC data are applicable to a current transmission frame or a next transmission frame, multiplexing data in the data groups and main service data, and transmitting a transmission frame including the multiplexed data.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: October 2, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Jeong Woo Kim, In Hwan Choi, Chul Soo Lee, Jae Hyung Song, Sang O Park
  • Patent number: 10068599
    Abstract: In one general embodiment, a method includes calculating a differential position value based on readback signals from at least two servo readers of a magnetic head reading servo tracks of a magnetic recording tape. The differential position value is compared to a previously-calculated differential position value. An action is performed in response to determining that the difference between the differential position value and the previously-calculated differential position value is in a predefined range. In another general embodiment, an apparatus includes a magnetic head having at least two servo readers, and a controller in communication with the servo readers. The controller is configured to detect a sudden change in a width of a magnetic recording tape based on a differential position value derived from relatively more current servo readback data and a second differential position value derived from relatively older servo readback data.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: September 4, 2018
    Assignee: International Business Machines Corporation
    Inventors: Nhan X. Bui, Randy C. Inch, David L. Swanson, Tomoko Taketomi
  • Patent number: 9928717
    Abstract: A human body tumbling detection method and device and a mobile terminal system are disclosed. The method may include: when detecting that resultant acceleration of a human body is less than a low acceleration threshold a0, capturing a resultant acceleration sequence I0 within fixed time; in a two-dimensional coordinate system using resultant acceleration and time as coordinate axes and a0 as a reference line, calculating a curve area above the reference line and a curve area below the reference line that are enclosed by curves in I0 coordinates and the reference line; and when a difference between the curve area above the reference line and the curve area below the reference line is less than a curve area threshold ?S, and time occupied by resultant acceleration below the reference line is greater than a low acceleration time threshold ?T, determining that the human body tumbles.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: March 27, 2018
    Assignee: Shenzhen ZhiYing Technologies Co., Ltd.
    Inventor: Kun Hu
  • Patent number: 9904691
    Abstract: An information processing device includes a creating unit that creates correspondence information that, based on reproduction history information representing a date and time of reproduction of content information and photographing history information representing a date and time of photographing of image information, associates the content information with the image information.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: February 27, 2018
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Yuhei Shimada, Manabu Ueda, Hiroyuki Hattori, Yuichi Ueno
  • Patent number: 9892041
    Abstract: Various methods and systems for optimizing cache consistency are disclosed. For example, one method involves writing data to a file during a write transaction. The file is stored in a persistent storage device and cached in a non-volatile storage device. The method determines if an in-memory flag associated with the persistent storage device set. If the in-memory flag is not set, the method increases a generation count associated with the persistent storage device before a write transaction is performed on the file. The method then sets the in-memory flag before performing the write transaction on the file. In other examples, the method involves using a persistent flag associated with the non-volatile storage device to maintain cache consistency during a data freeze related to the taking of a snapshot by synchronizing generation counts associated with the persistent storage device and the non-volatile storage device.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: February 13, 2018
    Assignee: Veritas Technologies LLC
    Inventors: Anindya Banerjee, Ryan Lefevre
  • Patent number: 9858964
    Abstract: A data storage device can employ a transducing head that accesses data stored on a data storage medium as directed by a controller. In response to experiencing a power disruption, the controller can predict at least one performance metric lost due to the power disruption and subsequently compensate for the power disruption by assuming the at least one predicted performance metric is correct.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: January 2, 2018
    Assignee: Seagate Technology LLC
    Inventors: Bo Wei, CheeHou Peng
  • Patent number: 9716735
    Abstract: Embodiments provide efficient delivery of multiple media channels to in-transport terminals, for example, to reduce channel zapping delay in a bandwidth efficient manner. For example, an in-transport media (ITM) server can distribute multiple channel offerings to ITM clients in a transport craft. Meanwhile, the ITM server can monitor which channel offerings are presently being consumed via the ITM clients, and can transmit feedback to a remote media server, accordingly. Based on the feedback, the ITM server can receive the channel offerings from the remote media server, in such a way that one or more of the channel offerings is received as a low-fidelity instance when not presently being consumed via any of the ITM clients, and one or more of the channel offerings is received as a high-fidelity instance when presently being consumed via at least one of the ITM clients.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: July 25, 2017
    Assignee: ViaSat, Inc.
    Inventors: Joshua G. Slater, Joshua J. Righetti, Nirmalkumar Velayudhan
  • Patent number: 9705926
    Abstract: Media files are often tagged, such as by XML or other tagging paradigms, in order to indicate aspects of certain portions of the media file. Disclosed herein, security policy tagging is provided that supports a logically nested or hierarchical structure. Tags may be time- and/or event-altered, such as when a user who is denied access at one point in time may be granted access at a later point in time. The need to amend the security policy based upon the passage of time is reduced or eliminated as portions, or sub-portions, of a media file that may be selectively tagged with security tags may be presented or downloaded based upon the security policy. The a security policy may incorporate rules that change permissions upon the passage of time or the occurrence of an event, without requiring the modification of the presentation, the security tags of the presentation portion, or the security tag associated with a parent portion of the presentation or the presentation itself.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: July 11, 2017
    Assignee: Avaya Inc.
    Inventors: Ajita John, Seamus Hayes, John Rix, Adrian Ryan, Samuel Fisher, David Skiba
  • Patent number: 9679596
    Abstract: A portable computing device prevents a magnetic disk unit protecting function from impairing usability for a user when the processor is used as a tablet PC. The portable computing device includes a magnetic disk unit, a magnetic disk unit protecting section operable when predicting an occurrence of an impact to carry out a magnetic disk unit protecting function for retracting a head of the magnetic disk unit, and a detecting section that detects whether a user is holding the portable computing device or not, and responsive to detecting that the user is holding the portable computing device, temporarily deactivating the magnetic disk unit protecting function.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: June 13, 2017
    Assignee: Lenovo (Singapore) PTE. LTD.
    Inventors: Kazuhiro Kosugi, Takashi Yomo, Mamoru Okada, Tomoaki Kosugi
  • Patent number: 9564162
    Abstract: A data storage device is disclosed comprising a disk, a head, and a shock sensor comprising a first terminal and a second terminal. A first bias signal is applied signal to the first terminal of the shock sensor and a second bias signal is applied to the second terminal of the shock sensor. An oscillating signal is generated by increasing the first bias signal and decreasing the second bias signal, and a resonant frequency of the shock sensor is detected based on the oscillating signal. A physical shock affecting the head actuated over the disk is detected based on a response of the shock sensor to the physical shock and based on the detected resonant frequency of the shock sensor.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: February 7, 2017
    Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
    Inventors: Jaesoo Byoun, Timothy A. Ferris
  • Patent number: 9536561
    Abstract: A request for writing a first index information to a first partition of a serial storage medium of a serial system is received. The serial storage medium includes a first partition for writing the first index information including a first index position, a second partition for storing a data set, the data set including a second index information including a second index position, a memory for determining the second index position, and a module for writing the first index position. A beginning position of the first index is written on the first partition. A determination is made whether the beginning of the first index position is proximate to the second index position. In response to the beginning of the first index position being proximate to the second index position, an interrupted index position is registered. A dummy index is written to the first partition at the interrupted index position.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: January 3, 2017
    Assignee: International Business Machines Corporation
    Inventors: Tohru Hasegawa, Masayuki Iwanaga, Yutaka Oishi
  • Patent number: 9467658
    Abstract: According to one embodiment, a method of descrambling digital multimedia content starts by sending an out-of-band request for encrypted control data to a headend. A descrambler integrated circuit may then receive digital program data in a scrambled, format and the encrypted control data. The encrypted control data may then be decrypted entirely within the descrambler integrated circuit using a multiple-step decryption process starting with a unique key permanently stored in the descrambler integrate circuit and using the partial decryption of control data from the previous decryption step to generate a key to decrypt subsequent encrypted control data. The scrambled digital program data may then be descrambled in the descrambler integrated circuit using the decrypted control data from the last decryption step. Other embodiments are described.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: October 11, 2016
    Assignees: SONY CORPORATION, SONY ELECTRONICS INC.
    Inventor: Brant L. Candelore
  • Patent number: 9454988
    Abstract: A method, and apparatus configured to perform such method, according to various embodiments, includes writing data stored in a buffer onto a recording medium using a write head in a first round of writing. An interval marker is written on the recording medium in the first round of writing when the buffer is empty. Next data is written onto the recording medium after the interval marker in the first round of writing. Data is written in an area of the interval marker in a second round of writing performed subsequent to the first round.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: September 27, 2016
    Assignee: International Business Machines Corporation
    Inventors: Takeshi Nohta, Eiji Tosaka
  • Patent number: 9431061
    Abstract: Technology is disclosed for deferring storage operations (e.g., writes or reads) during hostile events. When a data storage device experiences a hostile event, e.g., a vibration, shock, etc. contact by a head of the data storage device with a disk surface can cause errors or indeed damage. The technology can cause a data storage device to suspend storage operations until the hostile event is no longer detected.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: August 30, 2016
    Assignee: NetApp, Inc.
    Inventors: David Anthony Slik, Maxim Gerard Smith, John William Haskins, Jr.
  • Patent number: 9398318
    Abstract: Implementations generally relate to providing secure video conferencing. In some implementations, a method includes performing a first encryption of a video stream, wherein the video stream has a first encryption layer from the first encryption. The method further includes performing a second encryption of the video stream, wherein the video stream has a second encryption layer from the second encryption. The method further includes enabling one or more remote nodes to decrypt the second encryption layer. The method further includes enabling one or more end-user nodes to decrypt the first encryption layer.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: July 19, 2016
    Assignee: Google Inc.
    Inventors: Matthew John Leske, Gang Ji
  • Patent number: 9396746
    Abstract: A digital Storage Element is described. A device is configured including a Storage Element for access by a user responsive to a native control code. A processing arrangement executes a control program for controlling the overall device and executing at least a portion of the native control code as part of the control program for interfacing with the Storage Element. A programming arrangement is provided separate from the device for customizing a read channel within the Storage Element. Command, user interaction and data transfer execution are discussed for mitigation of potential mechanical shock effects. Status indications relating to the Storage Element are provided including head position and mechanical shock. Calibration, test and operational monitoring procedures, for using head position status, are described. Failure configuration monitoring is provided in tracking overall performance and design considerations.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: July 19, 2016
    Assignee: Benhov GmbH, LLC
    Inventors: Curtis H. Bruner, John F. Fletcher, Frida E. R. Fletcher
  • Patent number: 9378213
    Abstract: An information processing apparatus includes an inquiry unit configured to inquire, if a drag and drop operation or a copy and paste operation of a file path is performed from a file management unit “A” to a file management unit “B”, what data is dropped of an operating system, a file object acquisition unit configured to acquire, if data is a character string indicating a file path, a file object of the file path, an intra-folder file object acquisition unit configured to acquire, if the data is a character string indicating a folder, a file object in the folder, and an addition unit configured to add the file object acquired by the file object acquisition unit or the file object acquired by the intra-folder file object acquisition unit to a file of a management target of the file management unit “B”.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: June 28, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Takeshi Hayakawa
  • Patent number: 9378075
    Abstract: A data storage service receives a request to perform an operation in a data storage system that consists of many data storage devices, each device having a corresponding set of devices that may cause interference. The data storage service determines a manner in which to perform the operation while evaluating the current activity state of the devices that may cause interference. The data storage service can perform the operation in the determined manner.
    Type: Grant
    Filed: May 15, 2013
    Date of Patent: June 28, 2016
    Assignee: AMAZON TECHNOLOGIES, INC.
    Inventor: Colin Laird Lazier
  • Patent number: 9369756
    Abstract: A device receives a request for a digital video recorder (DVR) to record digital contents. The device identifies the digital contents using metadata included in the request, such as a channel and a time associated with the digital contents, to access additional metadata from an electronic program guide (EPG), such as an identifier. The device uses the additional metadata from the EPG to determine whether the digital contents are available via video on demand (VOD). For example, the device may compare the identifier and/or other metadata for the digital contents to metadata associated with VOD content, such as a VOD catalog. The device may selectively prevent the DVR from recording the digital contents if the digital contents are available via VOD.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: June 14, 2016
    Assignee: VERIZON PATENT AND LICENSING INC.
    Inventors: Deepak Natarajan, Aravind Vaidhyanathan, Vijayan Radhakrishnan, JanardhanReddy Tripuram, Venkatesan M. Sriraman, Sivasubramanian Parthasarathy, Kavitha PanneerSelvam
  • Patent number: 9355667
    Abstract: A data storage device is disclosed comprising a head actuated over a disk comprising a plurality of tracks defined by servo sectors, wherein each servo sector comprises a plurality of servo bursts and the servo sectors define a plurality of servo wedges. A first write operation is executed to a first track and a first absolute position for the head is generated corresponding to a first servo wedge. A second write operation is executed to a second track and a second absolute position for the head is generated corresponding to the first servo wedge. An off-track write condition is detected when executing the second write operation based on the first absolute position and the second absolute position. The first absolute position comprises a track address of the first track and a position error measurement based on the servo bursts in the first servo wedge.
    Type: Grant
    Filed: November 11, 2014
    Date of Patent: May 31, 2016
    Assignee: Western Digital Technologies, Inc.
    Inventors: Nathan J. Santee, Yanan Huang, Wei Xi, Hien T. Chu, Orhan Beker
  • Patent number: 9286936
    Abstract: Systems and methods for zone-based band mapping in a data storage device are disclosed. In one embodiment, a device may comprise a first data storage medium including a first band of tracks and a second band of tracks, each band of tracks including multiple adjacent tracks that are at least partially overlapped. The device may further comprise a processor configured to receive a write command to store received data to the first band of tracks, read previously stored data from the first band of tracks, modify the previously stored data with the received data to generate first modified data, write the first modified data to the second band of tracks, and assign a first data storage location indicator previously associated with the first band of tracks to the second band of tracks.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: March 15, 2016
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Sundar Poudyal, Ajay Narayan Kulkarni, Joseph Wach
  • Patent number: 9242492
    Abstract: A recording apparatus includes a support shaft that supports a roll-shaped recording medium; a motor that applies a rotational force to the support shaft; a motor control section that controls the motor; and a recording section that performs recording on the recording medium transported from the support shaft, in which the motor control section is capable of controlling the motor so that the motor alternately enters a braking state and a non-braking state.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: January 26, 2016
    Assignee: Seiko Epson Corporation
    Inventor: Daisuke Miyashita
  • Patent number: 9236087
    Abstract: A method for off track prediction comprises predicting a position error signal (PES) of a write head, comparing the predicted PES to an adaptive threshold, and preventing a write operation of the write head if the predicted PES exceeds the adaptive threshold. The adaptive threshold is a function of an on-cylinder limit, a smoothed standard deviation of an actual PES, and a smoothed standard deviation of the predicted PES.
    Type: Grant
    Filed: November 12, 2014
    Date of Patent: January 12, 2016
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventor: Eric J. Dahlberg
  • Patent number: 9218837
    Abstract: Sensor data and audio data are received by a controller. The controller determines if the audio data is above a threshold level. The controller also determines if the sensor data is above a threshold level. The controller can suspend operation of a hard drive based on the data being above or below the threshold level.
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: December 22, 2015
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Manuel Mendoza, Monji G Jabori
  • Patent number: 9147418
    Abstract: A disk drive is disclosed comprising a head, a disk surface comprising servo information, and a dual stage actuator (DSA) servo loop comprising a voice coil motor (VCM) servo loop comprising a VCM and a microactuator servo loop comprising a microactuator operable to actuate the head over the disk surface. A position error signal (PES) is generated based on the servo information, and a first control signal is generated based on the PES. The first control signal is adjusted based on a function of the first control signal to generate a second control signal that compensates for a gain variation of the microactuator, and the microactuator is controlled based on the second control signal.
    Type: Grant
    Filed: June 20, 2013
    Date of Patent: September 29, 2015
    Assignee: Western Digital Technologies, Inc.
    Inventors: Shreekant Gayaka, Min Chen, Young-Hoon Kim, Wei Xi
  • Patent number: 9146686
    Abstract: The present invention has the differences in that the external storage device has at least a hard disk drive and at least a nonvolatile memory logically integrated into a storage media through a low level of a system associated with the external storage device, measures the environmental temperature and measures continuously and records if a vibration is generated according to a time period, and selectively stores the data into the hard disk drive or the nonvolatile memory. By means of the above technique, the present invention may provide the efficacy of exemption of effects from unceasing vibrations and unstable operational temperature of the hard disk drive under a mobile environment.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: September 29, 2015
    Assignee: MOXA INC.
    Inventor: Shang-Jyh Lin
  • Patent number: 9110841
    Abstract: Systems and methods are disclosed for overlap detection using bitmask region trackers. In an embodiment, an apparatus may comprise a controller configured to maintain a count of writes associated with a selected area of a data storage medium, generate an overlap check bitmask, including an overlap check bit for each of multiple regions of the selected area and that represent an indication of a previous write associated with a respective region from the multiple regions, generate a write check bitmask based on a received write, the write check bitmask including a write check bit for each of the multiple regions of the selected area and representing which of the multiple regions are related to the received write, and increment the count of writes based on comparing the overlap check bitmask with the write check bitmask.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: August 18, 2015
    Assignee: Seagate Technology LLC
    Inventors: Christopher Ryan Fulkerson, Abhay Tejmal Kataria
  • Patent number: 9111101
    Abstract: A mechanism which makes it possible to automatically and appropriately select an erase method of erasing user data in a shorter time such that the user data can by no means be reproduced, according to the type of a connected nonvolatile storage device. An information processing apparatus determines an erase method of erasing an erase area of the nonvolatile storage device according to a management table generated based on attribute information acquired from the nonvolatile storage device. Then, the image forming apparatus erases information stored in the erase area according to the determined erase method.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: August 18, 2015
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kazuhiro Koga, Jun Hamaguchi
  • Patent number: 9082128
    Abstract: A system for tracking user activities on a computing network and generating a peer-group score based on those activities may be implemented in hardware and software that when executed performs steps for receiving at a server information including a device identifier, a user score associated with the device identifier, and content provider information from a content provider, the device identifier being based on one or more of user-configurable and non-user-configurable parameters of a user device used to access network-accessible content of the content provider, categorizing the content provider as belonging to one or more classes of service based on the received information, retrieving from a database one or more provider-generated user scores belonging to an identical one of the one or more classes of service and being associated with an identical device identifier, and generating a peer-group score for the received device identifier based on the received user score and the one or more retrieved provider-ge
    Type: Grant
    Filed: October 13, 2010
    Date of Patent: July 14, 2015
    Assignee: Uniloc Luxembourg S.A.
    Inventor: Craig S. Etchegoyen
  • Patent number: 9036284
    Abstract: Systems and methods are disclosed for isolated bands of fractional tracks in data storage devices, particularly devices employing shingled magnetic recording. In one embodiment, a device may comprise a data storage medium including a first data storage area including tracks overlapped in a shingled manner and having a first circumferential portion of a track to store data, a second data storage area, and a guard area disposed between the first data storage area and the second data storage area, the guard area including a second circumferential portion of the track as a partial guard track. In some embodiments, the guard area may include at least one sector in the first circumferential portion of the track, such that at least one sector of the guard area is interposed between data storage sectors of the first data storage area.
    Type: Grant
    Filed: September 16, 2013
    Date of Patent: May 19, 2015
    Assignee: Seagate Technology LLC
    Inventor: Timothy R. Feldman
  • Publication number: 20150113201
    Abstract: A method and system for preserving data of a storage device are disclosed. In one embodiment, the method includes determining a number of times data is written to a first track in a first region of a storage medium, and rewriting data from a second track that is adjacent to the first track in the first region if the number of times data is written to the first track in the first region exceeds a first predetermined threshold. The method further includes determining a number of times data is rewritten to the second track in the first region, and relocating data from the second track in the first region to a second region of the storage medium if the number of times data is rewritten to the second track in the first region exceeds a second predetermined threshold.
    Type: Application
    Filed: October 18, 2013
    Publication date: April 23, 2015
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Sokhyun Kong, Hoosan Lee, Mai Ghaly
  • Publication number: 20150092293
    Abstract: In one embodiment, a method includes determining a stopwrite threshold based on a standard deviation or a variance at a current position error signal sample, and determining whether the current position error signal sample exceeds the stopwrite threshold. Writing is disabled in response to determining that the current position error signal sample exceeds the stopwrite threshold. Writing is enabled in response to determining that the current position error signal sample does not exceed the stopwrite threshold.
    Type: Application
    Filed: December 8, 2014
    Publication date: April 2, 2015
    Inventors: Nhan X. Bui, Kevin B. Judd, Tomoko Taketomi
  • Patent number: 8995077
    Abstract: According to one embodiment, an electronic device includes a housing, a sensor, a disk device, a first determination controller, a first changing controller. The sensor senses a vibration of the housing. The disk device stores operation data, the disk device including a head, wherein the head retracts to a safety position when the sensed vibration exceeds a sensitivity level, and the operation data includes an evaluated value for evaluating an operation state of the head, and a threshold corresponding to the evaluated value. The first determination controller determines whether the evaluated value exceeds the threshold. The first changing controller changes the sensitivity level based on the result of the first determination controller.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: March 31, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tsukasa Nunami, Yoshihiro Kaneko
  • Patent number: 8943721
    Abstract: This invention is a huggable picture frame in the form of a person or doll, with an audio playback and recording unit. The shape of the invention is preferably a human shape in a soft sculpture, with a frame capable of holding a photograph. The audio playback and recording unit is activated by at least one remote button. The audio playback and recording unit contains a microphone or other audio input device and a speaker or other audio output device. The audio playback and recording unit and power supply are enclosed within the soft sculpture with sufficient cushioning that the presence of such relatively hard objects is not easily felt while the soft sculpture is hugged or squeezed. The overall impression of the picture frame is a huggable doll, which with a selected photograph, presents a reminder of a particular person to the user of the picture frame.
    Type: Grant
    Filed: July 30, 2012
    Date of Patent: February 3, 2015
    Inventor: Audrey Storch
  • Patent number: 8947818
    Abstract: A disk storage apparatus according to one embodiment includes a head, a storage device, a write module and a controller. The head writes data on a disk. The storage device has a storage area for temporarily storing the data written by the head. The write module writes data to tracks on a disk, while partially overlapping the data with previously written data to adjacent track. The controller detects a drift-off write of the head while writing data, determines a drift-off write area in which the drift-off write is occurred, and protects the data written in the storage area, if the data is written in the drift-off write area.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: February 3, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tatsuo Nitta, Takayuki Kawabe
  • Patent number: 8947819
    Abstract: A disk drive is disclosed comprising a head actuated over a disk, and control circuitry comprising a first shock detector and a second shock detector. A first number of shock events is detected based on the first shock detector, and when the first number of shock events exceeds an upper event threshold, a sensitivity of the first shock detector is decreased. After decreasing the sensitivity of the first shock detector, a second number of shock events is detected based on the second shock detector operating at a higher sensitivity than the first shock detector. When the second number of shock events falls below a lower event threshold, the sensitivity of the first shock detector is increased.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: February 3, 2015
    Assignee: Western Digital Technologies, Inc.
    Inventors: Timothy A. Ferris, Alain Chahwan
  • Patent number: 8941943
    Abstract: A disk drive includes an environmental monitor, a controller and a writing mechanism. The controller acts in response to an output from the environmental monitor to determine if the data capacity of a disk drive could be increased from a first value to a second value. The controller determines the second increased value. The writing mechanism, controlled by the controller, writes data to the disk to realize the increased data capacity of the disk drive. A method for increasing the data capacity of a disk drive from the factory settings for data capacity includes determining if the disk drive is in a favorable or stable environment, writing data to at least one portion of the disk drive at a higher capacity than the factory setting for the at least one portion of the disk drive, and resetting the capacity for at least one portion of the disk drive.
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: January 27, 2015
    Assignee: HGST Netherlands B.V.
    Inventors: Jonathan Darrel Coker, David Robison Hall
  • Patent number: 8937780
    Abstract: In one embodiment, an apparatus includes logic configured to count each data set read and/or write access that used error recovery procedure (ERP) and each data set read and/or write access that did not use ERP, and logic configured to access subsequent data sets to read from and/or write to a data storage medium, wherein any subsequent data set read and/or write access that uses ERP is accessed using an initial ERP step characterized by a first speed of the data storage medium, and wherein the first speed is selected at least partially based on the count. Other systems and methods for ERP data access are described according to more embodiments.
    Type: Grant
    Filed: January 14, 2014
    Date of Patent: January 20, 2015
    Assignee: International Business Machines Corporation
    Inventors: Takashi Katagiri, Pamela R. Nylander-Hill, Yutaka Oishi
  • Patent number: 8922930
    Abstract: The present disclosure generally relates to shingled recording systems, such as shingled magnetic recording (SMR). In some embodiments, systems having a data storage device containing a write cache and shingled bands may store new data from a host in the write cache before writing it to shingled track main storage. The system may determine when to throttle completion of commands based on a number of unique bands associated with data stored in the write cache.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: December 30, 2014
    Assignee: Seagate Technology LLC
    Inventor: Adam Weikal