Patents by Inventor Savas Gider

Savas Gider has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20220093842
    Abstract: Aspects of the subject technology relate to an apparatus including a housing, one or more piezoresistive elements and a magnetic actuator. The housing includes a membrane, and the piezoresistive elements are disposed on the membrane to sense a displacement due to a deflection of the membrane. The magnetic actuator is disposed inside a cavity of the housing. The magnetic actuator exerts a repulsive force onto the membrane to reduce the deflection of the membrane.
    Type: Application
    Filed: September 23, 2020
    Publication date: March 24, 2022
    Inventors: Majid KHAN, Roberto M. RIBEIRO, Savas GIDER
  • Publication number: 20220090942
    Abstract: Disclosed is a compact 3-axis coil design for a magnetic tracking system. In an embodiment, compactness is achieved by using a 3-axis coil in the transmitter that includes a scaffold design with a side surface having a curved groove for guiding one or more windings of a z-axis coil, such that the physical geometry is not increased.
    Type: Application
    Filed: September 23, 2021
    Publication date: March 24, 2022
    Inventors: Guangwu Duan, Jian Guo, John Greer Elias, Savas Gider
  • Publication number: 20220065958
    Abstract: Disclosed is a compact, multi-user magnetic tracking system. In an embodiment, a compactness is achieved by using a single coil and inertial sensors at the transmitter and magnetometers and inertial sensors at the receiver for sensing the magnetic field generated by the single coil and for determining a position and attitude of the receiver relative to the transmitter. The transmitter and receiver each include a wireless transceiver for exchanging clock synchronization data and sending transmitter attitude data to the receiver. In another embodiment, frequency or time division multiplexing is used to differentiate between multiple users of the multi-user magnetic tracking system.
    Type: Application
    Filed: August 24, 2021
    Publication date: March 3, 2022
    Inventors: Guangwu Duan, Jian Guo, John Greer Elias, Savas Gider
  • Patent number: 11199425
    Abstract: Magnetic sensing technology can be used to detect changes, or disturbances (e.g., changes in magnetic field strength), in magnetic fields and can be used to measure the precise location/positioning of an electronic device in proximity to a magnetic source. In order to avoid interference by earth's static magnetic field, a modulated magnetic field can be used for magnetic based proximity sensing. Received modulated magnetic field signals can be demodulated to determine a received magnetic field strength. A drive current of a magnetic transmitter coil can be varied to maintain the detected magnetic field strength at a target value or within a desirable range. The drive current can also be varied to remain below a burnout current level that can cause damage to the transmitter coil.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: December 14, 2021
    Assignee: Apple Inc.
    Inventors: Savas Gider, Jian Guo, John Greer Elias
  • Publication number: 20210072176
    Abstract: An electronic device can include a housing defining an internal volume and a pressure sensor assembly disposed in the internal volume and in communication with an ambient environment. The pressure sensor assembly can include a structure at least partially enclosing a sensor volume, a pressure sensor affixed to a die disposed in the sensor volume, and an exposed moisture detection conductor positioned in the sensor volume.
    Type: Application
    Filed: April 21, 2020
    Publication date: March 11, 2021
    Inventors: Caleb C. Han, Brad G. Boozer, David MacNeil, Gregory B. Arndt, Patrick E. O'Brien, Roham Solasi, Tongbi T. Jiang, Ashwin Balasubramanian, William S. Lee, Manoj K. Bhattacharyya, Jiahui Liang, James G. Horiuchi, Savas Gider
  • Patent number: 10914567
    Abstract: Magnetic sensing technology can be used to detect changes, or disturbances (e.g., changes in magnetic field strength), in magnetic fields and can be used to measure the precise location/positioning of an electronic device in proximity to a magnetic source. In order to avoid interference by earth's static magnetic field, a modulated magnetic field can be used for magnetic based proximity sensing. Received modulated magnetic field signals can be demodulated to determine proximity of the sensor to the source of the modulated magnetic field. Devices such as gloves or devices with fingertip nodes based on receiving modulated magnetic fields can be used to detect user hand position.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: February 9, 2021
    Assignee: Apple Inc.
    Inventors: Jian Guo, John Greer Elias, Savas Gider
  • Patent number: 10816612
    Abstract: Disclosed is a magnetometer architecture that uses a separate shield to minimize cross-axis sensitivity with low impact on main axis sensitivity. In an embodiment, a magnetometer with cross-axis shielding comprises: a ring shield; a magnetic yoke disposed within the ring shield; and one or more magnetic field sensors disposed between the ring shield and the magnetic yoke, the magnetic field sensors positioned relative to the ring shield and the magnetic yoke such that flux induced by a magnetic field is absorbed in a cross-axis direction of the magnetometer.
    Type: Grant
    Filed: May 30, 2018
    Date of Patent: October 27, 2020
    Assignee: Apple Inc.
    Inventors: Savas Gider, Jian Guo, Chaitanya Mudivarthi
  • Publication number: 20200319265
    Abstract: Disclosed is a magnetometer architecture that couples one or more coils to a magnetic yoke to allow the reset of the magnetic yoke and one or more magnetic field sensors simultaneously after, for example, exposure to a large stray magnetic field. Also, disclosed is a magnetometer architecture that integrates separate magnetic pole pieces offset from the yoke that are each wound by a reset coil to allow reset of the one or more magnetic field sensors.
    Type: Application
    Filed: April 5, 2019
    Publication date: October 8, 2020
    Inventors: Savas Gider, Chaitanya Mudivarthi, Joyce M. Mullenix
  • Publication number: 20200103252
    Abstract: Magnetic sensing technology can be used to detect changes, or disturbances (e.g., changes in magnetic field strength), in magnetic fields and can be used to measure the precise location/positioning of an electronic device in proximity to a magnetic source. In order to avoid interference by earth's static magnetic field, a modulated magnetic field can be used for magnetic based proximity sensing. Received modulated magnetic field signals can be demodulated to determine a received magnetic field strength. A drive current of a magnetic transmitter coil can be varied to maintain the detected magnetic field strength at a target value or within a desirable range. The drive current can also be varied to remain below a burnout current level that can cause damage to the transmitter coil.
    Type: Application
    Filed: September 26, 2019
    Publication date: April 2, 2020
    Inventors: Savas Gider, Jian Guo, John Greer Elias
  • Publication number: 20190369169
    Abstract: Disclosed is a magnetometer architecture that uses a separate shield to minimize cross-axis sensitivity with low impact on main axis sensitivity. In an embodiment, a magnetometer with cross-axis shielding comprises: a ring shield; a magnetic yoke disposed within the ring shield; and one or more magnetic field sensors disposed between the ring shield and the magnetic yoke, the magnetic field sensors positioned relative to the ring shield and the magnetic yoke such that flux induced by a magnetic field is absorbed in a cross-axis direction of the magnetometer.
    Type: Application
    Filed: May 30, 2018
    Publication date: December 5, 2019
    Applicant: Apple Inc.
    Inventors: Savas Gider, Jian Guo, Chaitanya Mudivarthi
  • Publication number: 20190265017
    Abstract: Magnetic sensing technology can be used to detect changes, or disturbances (e.g., changes in magnetic field strength), in magnetic fields and can be used to measure the precise location/positioning of an electronic device in proximity to a magnetic source. In order to avoid interference by earth's static magnetic field, a modulated magnetic field can be used for magnetic based proximity sensing. Received modulated magnetic field signals can be demodulated to determine proximity of the sensor to the source of the modulated magnetic field. Devices such as gloves or devices with fingertip nodes based on receiving modulated magnetic fields can be used to detect user hand position.
    Type: Application
    Filed: February 19, 2019
    Publication date: August 29, 2019
    Inventors: Jian GUO, John Greer ELIAS, Savas GIDER
  • Patent number: 9922672
    Abstract: A magnetic read apparatus has an air-bearing surface (ABS) and includes a read sensor and a rear magnetic bias structure. The read sensor includes first and second free layers, a spacer layer and a rear surface opposite to the ABS. The spacer layer is nonmagnetic and between the first and second free layers. The read sensor has a track width in a cross track direction parallel to the ABS. The rear magnetic bias structure magnetically biases the read sensor a stripe height direction perpendicular to the ABS. The read sensor is between the ABS and the rear magnetic bias structure. The rear magnetic bias structure has a width in the cross track direction and a length in the stripe height direction. The length is greater than the width. The width of the rear magnetic bias structure is substantially equal to the track width of the read sensor.
    Type: Grant
    Filed: August 12, 2016
    Date of Patent: March 20, 2018
    Assignee: Western Digital (Fremont), LLC
    Inventors: Daniele Mauri, Savas Gider, Hui Zhao, Ming Mao
  • Patent number: 9812155
    Abstract: A method provides a magnetic read apparatus. A sensor stack is deposited. The read sensor is defined from the stack such that the sensor has sides forming a junction angle of 75 degrees-105 degrees from a sensor bottom. Defining the sensor includes performing a first ion mill at a first angle and a first energy and performing a second ion mill at a second angle greater than the first angle and at a second energy less than the first energy. The first angle is 5 degrees-30 degrees from normal to the top surface. After the first ion mill, less than half of the stack's bottom layer depth remains unmilled. Magnetic bias structure(s) adjacent to the sides may be formed. The magnetic bias structure(s) include a side shielding material having at least one of the saturation magnetization greater than 800 emu/cm3 and an exchange length less than five nanometers.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: November 7, 2017
    Assignee: WESTERN DIGITAL (FREMONT), LLC
    Inventors: Anup Ghosh Roy, Guanxiong Li, Daniele Mauri, Ming Mao, Goncalo Albuquerque, Savas Gider
  • Patent number: 9564150
    Abstract: A method and system provide a magnetic read apparatus. The magnetic read apparatus includes a substrate and an isolation circuit. The isolation circuit includes a bias resistor and a capacitor residing on the substrate. The bias resistor and the capacitor are connected in parallel through the substrate.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: February 7, 2017
    Assignee: WESTERN DIGITAL (FREMONT), LLC
    Inventors: Savas Gider, Neil D. Knutson, Steven C. Rudy
  • Patent number: 9472216
    Abstract: A magnetic read apparatus has an air-bearing surface (ABS) and includes a differential read sensor, side bias structure(s) and rear magnetic bias structure(s). The differential read sensor includes first and second free layers and a nonmagnetic spacer layer between the first and second free layers in a down-track direction. The side bias structure(s) are adjacent to the first and second free layers in a cross-track direction perpendicular to the down-track direction. The side bias structure(s) magnetically bias the first and second free layers in the cross-track direction. The differential read sensor is between the ABS and the rear magnetic bias structure(s). The rear magnetic bias structure(s) provide a first magnetic bias for the first free layer in a first direction along a stripe height direction perpendicular to the ABS and provide a second magnetic bias for the second free layer in a second direction opposite to the first direction.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: October 18, 2016
    Assignee: Western Digital (Fremont), LLC
    Inventors: Daniele Mauri, Savas Gider, Hui Zhao
  • Patent number: 9449621
    Abstract: A magnetic read apparatus has an air-bearing surface (ABS) and includes a read sensor and a rear magnetic bias structure. The read sensor includes first and second free layers, a spacer layer and a rear surface opposite to the ABS. The spacer layer is nonmagnetic and between the first and second free layers. The read sensor has a track width in a cross track direction parallel to the ABS. The rear magnetic bias structure magnetically biases the read sensor a stripe height direction perpendicular to the ABS. The read sensor is between the ABS and the rear magnetic bias structure. The rear magnetic bias structure has a width in the cross track direction and a length in the stripe height direction. The length is greater than the width. The width of the rear magnetic bias structure is substantially equal to the track width of the read sensor.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: September 20, 2016
    Assignee: WESTERN DIGITAL (FREMONT), LLC
    Inventors: Daniele Mauri, Savas Gider, Hui Zhao, Ming Mao
  • Patent number: 8675318
    Abstract: A method and system for providing a read magnetic transducer having an air-bearing surface (ABS) is described. The magnetic read transducer includes a first shield, a read sensor stack, an antiferromagnetic (AFM) tab, and a second shield. The read sensor stack includes a pinned layer, a spacer layer, and a free layer. The spacer layer is nonmagnetic and between the pinned layer and the free layer. A portion of the read sensor stack is at the ABS. The AFM tab is recessed from the ABS and adjacent to a portion of the pinned layer. The read sensor resides between the first shield and the second shield.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: March 18, 2014
    Assignee: Western Digital (Fremont), LLC
    Inventors: Kuok San Ho, Savas Gider, Daniele Mauri, Ming Mao, Sining Mao
  • Patent number: 8630068
    Abstract: A method and system for providing a magnetic transducer having an air-bearing surface (ABS) is described. The magnetic read transducer includes a first shield, a magnetoresistive sensor, at least one soft magnetic side shield, and a second shield. The magnetoresistive sensor includes a sensor layer having at least one edge in the track width direction along the ABS. The at least one soft magnetic side shield is adjacent to the at least one edge of the sensor layer. The at least one soft magnetic side shield has a full film permeability of at least ten. The magnetoresistive sensor is between the first shield and the second shield and free of an in-stack hard bias layer.
    Type: Grant
    Filed: November 15, 2011
    Date of Patent: January 14, 2014
    Assignee: Western Digital (Fremont), LLC
    Inventors: Daniele Mauri, Chih-Ching Hu, Ming Mao, Kuok San Ho, Savas Gider
  • Patent number: 8331058
    Abstract: A method and apparatus for providing a write head with an improved pole tip to improve overwrite and/or adjacent track interference. A cross pole tip writer is provided with a shape that is designed to reduce the saturation on the pole tip and aid in the concentration of flux to the down track.
    Type: Grant
    Filed: May 28, 2004
    Date of Patent: December 11, 2012
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Savas Gider, Wen-Chien David Hsiao, Quan-chiu Harry Lam, Terence Tin-Lok Lam, Edward Hin Pong Lee, Yansheng Luo, Vladimir Nikitin, Changqing Shi, Xiaoyu Sui
  • Patent number: 7538977
    Abstract: A method and apparatus for providing improved flux focusing in a write head is disclosed. The present invention uses a diamagnetic material to provide flux focusing in a storage device. An embodiment of the present invention includes diamagnetic material having a magnetic susceptibility substantially equal to or greater than 1×10?5. Another embodiment of the present invention includes diamagnetic material selected from a group comprising graphite and bismuth.
    Type: Grant
    Filed: April 30, 2004
    Date of Patent: May 26, 2009
    Assignee: Hitachi Global Storage Technologies B.V.
    Inventors: Savas Gider, Wen-chien David Hsiao