Patents Examined by Brian M Butcher
  • Patent number: 10410668
    Abstract: A slider configured for heat-assisted magnetic recording includes a laser diode optically coupled to a waveguide of the slider. A power supply is coupled to the laser diode. A preamplifier is coupled to the power supply. The preamplifier is configured to monitor a forward voltage across the laser diode while operating the laser diode at a constant current during a write operation, detect a change in the forward voltage indicative of laser power instability, and generate a signal in response to detecting the forward voltage change.
    Type: Grant
    Filed: January 16, 2019
    Date of Patent: September 10, 2019
    Assignee: Seagate Technology LLC
    Inventors: Declan Macken, Tyler Lenn Perry, Karim Tatah, Andrei Dorobantu, Todd Michael Lammers
  • Patent number: 10403315
    Abstract: Embodiments disclosed herein generally relate to a HAMR head. The HAMR head includes a main pole, a waveguide and a NFT disposed between the main pole and the waveguide. The NFT includes an antenna, and the antenna includes a first portion and a second portion. The second portion may be made of a material having a higher melting point than the material of the first portion. Having the second portion helps reduce the temperature rise of the NFT and reduce the laser power applied to the NFT.
    Type: Grant
    Filed: May 6, 2015
    Date of Patent: September 3, 2019
    Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
    Inventors: Takuya Matsumoto, Vijay Prakash Singh Rawat, Barry C. Stipe
  • Patent number: 10395607
    Abstract: A low color shift display panel includes a pixel array. The pixel array includes a first sub-pixel and a second sub-pixel. Each of the first sub-pixel and second sub-pixel respectively includes a data line, a gate line, a first transistor coupled to the data line and a first liquid crystal capacitor, a second transistor coupled to the data line and a second liquid crystal capacitor, and a third transistor coupled to a common voltage and the second transistor. The first sub-pixel has a first ratio which is the width-to-length ratio of the third transistor divided by the width-to-length ratio of the second transistor. The second sub-pixel has a second ratio which is the width-to-length ratio of the third transistor divided by the width-to-length ratio of the second transistor. The second ratio is smaller than the first ratio.
    Type: Grant
    Filed: July 15, 2015
    Date of Patent: August 27, 2019
    Assignee: INNOLUX CORPORATION
    Inventors: Bo-Chin Tsuei, Yao-Lien Hsieh
  • Patent number: 10388342
    Abstract: Provided herein is an apparatus including a three dimensional crystalline structure including a number of storage locations. The storage locations are arranged in three dimensions within the crystalline structure. A light source is configured to focus a first light with a first energy on one of the storage locations in order to alter a characteristic of the storage location. The light source is further able to focus a second light with a second light energy on the storage location without altering the characteristic. A detector is provided to detect the second light energy.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: August 20, 2019
    Assignee: Seagate Technology LLC
    Inventors: Joachim Walter Ahner, David Marcus Tung
  • Patent number: 10381031
    Abstract: Apparatus and method for disturbance rejection in a control system. In some embodiments, a controller is adapted to position a control object. A disturbance observer generates a disturbance compensation value which is applied to reduce position error resulting from application of mechanical disturbance to the control object. The disturbance observer includes an adaptive filter with at least one dead zone providing a pass-through response with a scalar gain of less than one.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: August 13, 2019
    Assignees: Seagate Technology LLC, Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Sung-Won Park, Sung-Yong Lim, Jae-Seong Lee, Hyunseok Yang
  • Patent number: 10381029
    Abstract: A heat-assisted magnetic recording (HAMR) write apparatus includes a laser for providing energy and resides in proximity to a media during use. The HAMR write apparatus includes a write pole that writes to a region of the media, coil(s) for energizing the write pole and a waveguide optically coupled with the laser. The waveguide includes at least one multi-mode interference (MMI) device. The MMI device has at least one input, a plurality of outputs, a propagation section and a multi-mode interference (MMI) section. Energy from the laser propagates through the propagation section before the MMI section. The propagation section expands the energy from the laser to a plurality of modes. A first portion of the outputs is output from the propagation section. The MMI section is between the propagation section and a second portion of the plurality of outputs.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: August 13, 2019
    Assignee: WESTERN DIGITAL (FREMONT), LLC
    Inventors: Jianwei Mu, Sergei Sochava, Michael V. Morelli
  • Patent number: 10372240
    Abstract: A manual device comprising a body, and at least one reversible tip mounted on the body, the reversible tip comprising a first head, a second head opposite to the first head, a conductive outer casing, an internal part arranged inside the casing, the first head comprising a first pad for a capacitive screen, the first head and the second head being blocked between the internal part and the casing while the internal part is assembled by snap-fitting to the casing, the first head and the second head projecting from the casing.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: August 6, 2019
    Assignee: SOCIETE BIC
    Inventors: Samuel Malinverni, Arnaud Bez
  • Patent number: 10365817
    Abstract: A mobile communication terminal has a controller and a touch display. The touch display is arranged to display at least a first graphical object and a second graphical object, receive a touch, and determine a touch position and a touch duration for the touch. The controller is configured to receive the touch position and the touch duration, determine a graphical object, among the first graphical object and the second graphical object, corresponding to the touch position, determine if the touch duration exceeds a reference time threshold, and if so, generate a click event for the corresponding graphical object. The first graphical object is associated with a first time threshold, and the second graphical object is associated with a second time threshold. The first time threshold is different from the second time threshold.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: July 30, 2019
    Assignee: Doro AB
    Inventors: Peter Cullin, Ola Lennartsson
  • Patent number: 10365712
    Abstract: A system for tracking an object in an ambient environment with respect to a head mounted reference frame may allow the ambient object to be rendered in a virtual display, at a virtual position corresponding to its position in the ambient environment, in response to head movement. The system may detect a position of a head mounted device with respect to a fixed frame of reference in the ambient environment, and may detect an position of the ambient object with respect to the fixed frame of reference in the ambient environment. The system may then translate the detected position of the ambient object to the frame of reference of the head mounted device, or to the head mounted reference frame, to determine a position of the ambient object relative to the head mounted device. This newly determined position may be rendered in the virtual display generated by the head mounted device.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: July 30, 2019
    Assignee: GOOGLE LLC
    Inventors: Zhaoyang Xu, Murphy Stein
  • Patent number: 10365774
    Abstract: A display panel and a display device are disclosed. The display panel includes a first substrate; a first electrode and a second electrode sequentially formed on the first substrate, an organic light emitting layer being interposed between the first electrode and the second electrode and the second electrode being multiplexed as a first pressure detection electrode; a thin film encapsulation layer formed on the first pressure detection electrode, the thin film encapsulation layer comprising at least one organic layer; and a second pressure detection electrode formed on the thin film encapsulation layer, the second pressure detection electrode being multiplexed as a touch detection electrode.
    Type: Grant
    Filed: December 5, 2016
    Date of Patent: July 30, 2019
    Assignees: SHANGHAI TIANMA MICRO-ELECTRONICS CO., LTD., TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Chuanli Leng, Sitao Huo, Feng Lu, Qijun Yao
  • Patent number: 10354680
    Abstract: A system, according to one embodiment, includes: a near field transducer, a return pole, a main pole, a waveguide adjacent the near field transducer, wherein the waveguide extends away from the near field transducer along a direction perpendicular to a media facing surface, at least one cladding layer adjacent to the waveguide, an underlayer positioned behind the near field transducer with respect to the media facing surface, the underlayer extending away from the near field transducer along the direction perpendicular to the media facing surface, and a fill material at least partially surrounding the underlayer, the waveguide and the at least one cladding layer. The underlayer has a lower coefficient of thermal expansion than the fill material. Other systems, and methods are described in additional embodiments.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: July 16, 2019
    Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
    Inventors: Sukumar Rajauria, Robert Smith
  • Patent number: 10339448
    Abstract: A method includes receiving a first set of testing data associated with a first group of electronic devices. The first set of testing data is generated during a tuning test applying a first range of testing parameters. The method further includes receiving a second set of testing data associated with the first group of electronic devices. Further, the method includes determining, based on the first set of testing data and the second set of testing data, a second range of testing parameters that is less than the first range of testing parameters. The method includes testing a second group of electronic devices using a tuning test applying the second range of testing parameters.
    Type: Grant
    Filed: January 9, 2017
    Date of Patent: July 2, 2019
    Assignee: Seagate Technology LLC
    Inventors: ChengYi Guo, TeckKhoon Lim, TeckHoon Chua
  • Patent number: 10304482
    Abstract: Devices having an air bearing surface (ABS), the devices include a write pole; a near field transducer (NFT) including a peg and a disc, wherein the peg is at the ABS of the device; an overcoat, the overcoat including a low surface energy layer.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: May 28, 2019
    Assignee: Seagate Technology LLC
    Inventors: Yuhang Cheng, Michael Seigler, Scott Franzen, Tong Zhao, Xiaoyue Huang, Steven C. Riemer, Robert Anthony Fernandez, Douglas H. Cole
  • Patent number: 10276206
    Abstract: Amplitude or phase modulated uncompensated wobble patterns representing address patterns for track addresses of optical media are generated or applied to the media. A filter is applied to the un-compensated wobble patterns to detect a threshold value to signal the existence of a synchronization pattern. A pair of filters can be used to detect the threshold and a zero-crossing. This methodology can detect the existence and timing of the wobble pattern. This can eliminate the need for a timing recovery subfield in the wobble pattern of the prior art.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: April 30, 2019
    Assignee: Oracle International Corporation
    Inventor: Faramarz Mahnad
  • Patent number: 10275099
    Abstract: A touch control device, a driving method of a touch control device, a touch display device, and a driving method of a touch control device are provided. The touch control device comprises a first electrode layer and a second electrode layer. The first electrode and the second electrode layer are electrically insulated from each other. The first electrode layer includes a plurality of mutually insulated first electrodes arranged in an array. The second electrode layer is disposed on a different layer other than the first electrode layer, and includes at least one second electrode. The first electrode is configured to detect a touch position in a first touch control time period, and the first electrode and the second electrode are configured to detect a touch force in a second touch control time period.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: April 30, 2019
    Assignees: Xiamen Tianma Micro-electronics Co., Ltd., Tianma Micro-electronics Co., Ltd.
    Inventors: Ying Sun, Yanfang Tang, Yumin Xu
  • Patent number: 10268282
    Abstract: A foot-operated touchpad system and an operation method thereof are provided. The foot-operated touchpad system includes a touch-sensitive device and a foot-wearable pattern pad. The foot-wearable pattern pad includes a backing layer. The backing layer includes pattern areas that are positioned such that: when a human foot is placed on the backing layer, the pattern areas correspond to a fore part and a heel part of the human foot. A pattern is on one pattern area and patterns on different pattern areas are distinguishable from each other. Each pattern is rotation-sensitive. The pattern includes a number of stylus-type dots that are capable of interacting with the touch-sensitive device.
    Type: Grant
    Filed: September 21, 2016
    Date of Patent: April 23, 2019
    Inventor: Xin Tian
  • Patent number: 10267866
    Abstract: A method of driving a crack detector of an organic light emitting display device according to example embodiments includes: determining an image load of a display panel with respect to image data corresponding to an emission period of the organic light emitting display device when it is driven according to a simultaneous emission driving method, calculating a first sensing value corresponding to a power current that flows into a power supply during the emission period, determining a first crack reference value based on the image load, and determining whether the display panel is cracked by comparing the first crack reference value with the first sensing value.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: April 23, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seung-Jun Lee, O-Gweon Seo, Hong-Kwon Kim
  • Patent number: 10262683
    Abstract: A near field transducer (NFT) is formed between a waveguide and main pole layer at an air bearing surface (ABS). The NFT includes a resonator body layer made of Au, for example, with a front side at a first plane that is recessed a first distance from the ABS and a back side that is at a second plane formed parallel to the ABS and first plane. The NFT also has a peg layer with a rectangular peg portion between the ABS and first plane, and a larger back portion between the first and second planes that overlays directly above the resonator body layer. The peg layer is preferably made of Rh to improve mechanical stability of the NFT without significantly degrading overall optical efficiency of the NFT. A blocker may be formed between the ABS and waveguide to prevent light not coupled to the NFT from reaching the ABS.
    Type: Grant
    Filed: February 1, 2016
    Date of Patent: April 16, 2019
    Assignee: Headway Technologies, Inc.
    Inventors: Matteo Staffaroni, Xuhui Jin, Weihao Xu, Cherng-Chyi Han, Weisheng Hu, Shengyuan Wang
  • Patent number: 10255940
    Abstract: A slider configured for heat-assisted magnetic recording includes a laser diode optically coupled to a waveguide of the slider. A power supply is coupled to the laser diode. A preamplifier is coupled to the power supply. The preamplifier is configured to monitor a forward voltage across the laser diode while operating the laser diode at a constant current during a write operation, detect a change in the forward voltage indicative of laser power instability, and generate a signal in response to detecting the forward voltage change.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: April 9, 2019
    Assignee: Seagate Technology LLC
    Inventors: Declan Macken, Tyler Lenn Perry, Karim Tatah, Andrei Dorobantu, Todd Michael Lammers
  • Patent number: 10249328
    Abstract: A slider comprises an air bearing surface (ABS) and is configured to interact with a magnetic recording medium. A writer is provided on the slider and comprises a write coil having a media-facing surface situated at the ABS. Cooling arms project laterally from peripheral surfaces of the write coil and extend along the ABS. The media-facing surface of the write coil and the cooling arms are exposed to the ABS to facilitate increased cooling of the write coil at the ABS.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: April 2, 2019
    Assignee: Seagate Technology LLC
    Inventors: Gary Joseph Kunkel, Raul Horacio Andruet, James Gary Wessel