Patents by Inventor Manu Agarwal

Manu Agarwal 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: 20180051594
    Abstract: A turning apparatus includes: an electric motor; a pinion gear that rotationally drives a wheel gear provided in a rotor in a first rotation direction and moves to a first position where the pinion gear can transmit a rotation of the electric motor to the wheel gear and a second position where the pinion gear cannot transmit the rotation of the electric motor to the wheel gear; a current value detection unit that detects a current value of the electric motor in a state where the pinion gear is positioned at the first position; and a control device that controls the electric motor to rotate the pinion gear in a second rotation direction opposite to the first rotation direction based on the current value detected by the current value detection unit
    Type: Application
    Filed: March 24, 2015
    Publication date: February 22, 2018
    Applicant: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Masataka Yamada, Manu Agarwal
  • Patent number: 9880649
    Abstract: Synchronization of display functions and various touch, stylus and/or force sensing functions for devices including a variable refresh rate (VRR) display is disclosed. In some examples, touch, stylus and/or force sensing functions can be synchronized with display frames and a display refresh rate can be adjusted by extended blanking of the display for one or more display frames. In other examples, touch, stylus and/or force sensing functions can be synchronized with display sub-frames and a display refresh rate can be adjusted by extended blanking of the display for one or more display sub-frames. Pre-warning synchronization signals can be generated to prepare one or more scan controllers to implement the appropriate scan events during and after extended blanking periods. Latency between the scan results and the corresponding image on the display can be corrected in software and/or firmware by time-stamping scan results or by dropping scan results from uncompleted scans.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: January 30, 2018
    Assignee: Apple Inc.
    Inventors: Manu Agarwal, Christopher Tann, Brijesh Tripathi, Martin Paul Grunthaner
  • Patent number: 9880664
    Abstract: Noise in sensor panel measurements can be reduced using a common pixel correction algorithm. Noise can be introduced into touch or force sensor panel measurements, for example, by circuitry of a transmit (Tx) section or a receive (Rx) section coupled to one or more sensing nodes of a sensor panel. For example, a digital-to-analog converter in the transmit section or an analog-to-digital converter in the receive section can introduce low-frequency correlated noise. Additionally, transmit and receive sections can introduce uncorrelated noise into the system. Reference nodes, coupled between Tx and Rx sections, can sense correlated and uncorrelated noise from the Tx and Rx sections. The noise measured at reference nodes can be subtract from signals measured at other sensing nodes coupled to the same Rx channel. The measurement at the reference node can be scaled using a scaling parameter to account for differences between reference nodes and sensing nodes.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: January 30, 2018
    Assignee: Apple Inc.
    Inventors: Manu Agarwal, Jason C. Hu, Dhaval Patel, Shahrooz Shahparnia, Sumant Ranganathan
  • Patent number: 9851845
    Abstract: An optically transparent force sensor element compares a force reading from a first strain-sensitive film element with a second strain-sensitive film element, having a compliant and thermally conductive intermediate layer positioned therebetween to compensate for temperature changes. While in the idle state, the optically transparent force sensor can be periodically calibrated to account for additional changes in temperature.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: December 26, 2017
    Assignee: Apple Inc.
    Inventors: John S. Smith, Manu Agarwal
  • Publication number: 20170351368
    Abstract: A sensing device can be included in a display of an electronic device. Various techniques can be used to reduce display noise in the signals output from the sensing device. The techniques include the use of a filtering layer in a display stack, the use of a non-uniform sampling scheme, averaging together noise signal samples sampled over multiple display frames, and inverting a phase of the sampling of the noise signal over multiple display frames.
    Type: Application
    Filed: August 4, 2017
    Publication date: December 7, 2017
    Inventors: Manu Agarwal, Erno H. Klaassen, Hopil Bae, Kingsuk Brahma
  • Publication number: 20170226858
    Abstract: A turning device (30) includes an electric motor (41), a moving gear (53) configured to move between a first position (P1) at which rotation of an output shaft (43) of the electric motor (41) is able to be transmitted to a rotor (11) and a second position (P2) at which rotation of the output shaft (43) is unable to be transmitted to the rotor (11), a movement mechanism (60) configured to move the moving gear (53) between the first position (P1) and the second position (P2), a torque detection unit (44) configured to detect a torque of the output shaft (43) of the electric motor (41), and a control device (61) configured to control the movement mechanism (60) to move the moving gear (53) from the first position (P1) to the second position (P2) based on the torque detected by the torque detection unit (44).
    Type: Application
    Filed: October 30, 2014
    Publication date: August 10, 2017
    Applicant: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Hirokazu KAWASHIMA, Masataka YAMADA, Manu AGARWAL
  • Publication number: 20170226899
    Abstract: A turning apparatus (30) includes an electric motor (41), a moving gear (53) that is movable between a first position at which rotation of an output shaft (43) of the electric motor (41) is able to be transmitted to a rotor (11), and a second position and a third position, which are different from each other and at which rotation of the output shaft (43) is unable to be transmitted to the rotor (11), a movement mechanism (60) configured to move the moving gear (53) between the first position, the second position and the third position, and a control device (61) configured to control the movement mechanism (60) based on a. retreat signal such that the moving gear (53) is moved from the first position to the second position and control the movement mechanism (60) based on an adhesion prevention signal such that the moving gear (53) reciprocates between the second position and the third position.
    Type: Application
    Filed: November 5, 2014
    Publication date: August 10, 2017
    Applicant: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Hirokazu KAWASHIMA, Masataka YAMADA, Manu AGARWAL
  • Patent number: 9726922
    Abstract: A sensing device can be included in a display of an electronic device. Various techniques can be used to reduce display noise in the signals output from the sensing device. The techniques include the use of a filtering layer in a display stack, the use of a non-uniform sampling scheme, averaging together noise signal samples sampled over multiple display frames, and inverting a phase of the sampling of the noise signal over multiple display frames.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: August 8, 2017
    Assignee: Apple Inc.
    Inventors: Manu Agarwal, Erno H. Klaassen, Hopil Bae, Kingsuk Brahma
  • Publication number: 20170090668
    Abstract: Noise in sensor panel measurements can be reduced using a common pixel correction algorithm. Noise can be introduced into touch or force sensor panel measurements, for example, by circuitry of a transmit (Tx) section or a receive (Rx) section coupled to one or more sensing nodes of a sensor panel. For example, a digital-to-analog converter in the transmit section or an analog-to-digital converter in the receive section can introduce low-frequency correlated noise. Additionally, transmit and receive sections can introduce uncorrelated noise into the system. Reference nodes, coupled between Tx and Rx sections, can sense correlated and uncorrelated noise from the Tx and Rx sections. The noise measured at reference nodes can be subtract from signals measured at other sensing nodes coupled to the same Rx channel. The measurement at the reference node can be scaled using a scaling parameter to account for differences between reference nodes and sensing nodes.
    Type: Application
    Filed: September 24, 2015
    Publication date: March 30, 2017
    Inventors: Manu AGARWAL, Jason C. HU, Dhaval PATEL, Shahrooz SHAHPARNIA, Sumant RANGANATHAN
  • Publication number: 20170046008
    Abstract: The disclosed embodiments relate to forming an area on a touchscreen which electrically isolates a portion of the viewable area of the touchscreen from a capacitive sensor associated with the touchscreen.
    Type: Application
    Filed: April 21, 2014
    Publication date: February 16, 2017
    Inventors: Cheng Chen, Erik A. Uttermann, Kevin D. Gibbs, Manu Agarwal, Martin P. Grunthaner
  • Patent number: 9557868
    Abstract: A touch sensor may overlap a display. A transparent shield layer that is grounded around its edges may be interposed between the display and the touch sensor to help prevent noise from display data lines from reaching the touch sensor. The data lines may extend along a first dimension. The touch sensor may have first elongated electrodes that extend along the first dimension and second elongated electrodes that extend along a second dimension that is perpendicular to the first dimension. The second electrodes may be interposed between the first electrodes and the data lines. Pen present electrodes may be used to gather pen present data associated with a stylus on the touch sensor. Adjacent noise sensors may collect noise data that is removed from the pen present data.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: January 31, 2017
    Assignee: Apple Inc.
    Inventors: Manu Agarwal, Shahrooz Shahparnia, Vivek Pant
  • Publication number: 20170010723
    Abstract: Several techniques for driving a force sensor to reduce common mode offset are disclosed. The force sensor can include at least one set of individual strain sensitive structures formed on or in a surface of a substrate. Each set of individual strain sensitive structures can include one or more strain sensitive structures. At least one external resistor is operably connected in series between a first output of one or more transmitter channels and at least one set of strain sensitive structures. The external resistor(s) effectively increases the resistances of the strain sensitive structures to reduce the common mode offset. Additionally or alternatively, one or more signal generators may be connected to one or more transmitter channels. Each signal generator is configured to produce one or more signals that is/are designed to reduce common mode offset.
    Type: Application
    Filed: September 23, 2016
    Publication date: January 12, 2017
    Inventors: John Stephen Smith, Manu Agarwal, Christian M. Sauer
  • Publication number: 20160377501
    Abstract: Systems and methods for accurately and precisely measuring the resistance of a resistive sensor of a matched resistive sensor pair disposed on opposite surfaces of a substrate. Certain embodiments include coupled each sensor of the matched resistive sensors to a thermally-isolated pair of reference resistors contained within an integrated circuit so as to form a Wheatstone bridge. A controller associated with the integrated circuit can adjust the resistance of the thermally-isolated pair of reference resistors until the ratio of resistances matches to the ratio of resistances between the sensors of the matched pair.
    Type: Application
    Filed: June 24, 2015
    Publication date: December 29, 2016
    Inventors: Manu Agarwal, John Stephen Smith, Sumant Ranganathan
  • Publication number: 20160370915
    Abstract: Various timing schemes can be used to synchronizing display functions with touch and/or stylus sensing functions for devices including a variable refresh rate (VRR) display. In a continuous-touch mode, for example, extended blanking can result in frame judder due to mismatch or latency between reporting of sensing data and the display. To minimize these issues, sensing operations can reset to re-synchronize with the display operation, and unreported data from sensing scans can be discarded or ignored. In some examples, a display frame can be divided into two sub-frames, and a system can be configured to perform a touch sensing scan during the first sub-frame of a display frame. At the conclusion of extended blanking, the sensing operations can reset to re-synchronize with the display. The touch sensing scan can be completed in one intra-frame pause and can begin at the start of the display frame.
    Type: Application
    Filed: September 25, 2015
    Publication date: December 22, 2016
    Inventors: Manu AGARWAL, Hopil BAE, Kingsuk BRAHMA
  • Publication number: 20160259465
    Abstract: A force sensing device can be included in a display. Noise produced by various sources can be injected into the force signals produced by the force sensing device. Example noise sources include, but are not limited to, the display, Johnson or Thermal noise from the force sensing device, system noise, and magnetically-coupled or background noise produced by ambient light sources. A sampling scheme that includes one or more noise cancelling techniques can be employed to reduce the amount of noise in the force signals.
    Type: Application
    Filed: May 19, 2015
    Publication date: September 8, 2016
    Inventors: Manu Agarwal, John Stephen Smith
  • Publication number: 20160216833
    Abstract: A system can include a display, a first device, and a second device all operatively connected to a controller. The first and second devices each use or share at least a portion of the display area. The controller is adapted to transmit during a pixel refresh time period of the display a first signal that is received by the first device. The first sync signal indicates a first time period in which a first operation can be performed in the first device. The controller is also adapted to transmit a second sync signal that is received by the second device indicating a second time period in which a second operation can be performed in the second device. The second time period can be during the pixel refresh time period or outside of the pixel refresh time period.
    Type: Application
    Filed: September 30, 2013
    Publication date: July 28, 2016
    Inventors: Christopher J. Butler, Peter W. Richards, Christian M. Sauer, Manu Agarwal
  • Publication number: 20160147319
    Abstract: A touch sensor may overlap a display. A transparent shield layer that is grounded around its edges may be interposed between the display and the touch sensor to help prevent noise from display data lines from reaching the touch sensor. The data lines may extend along a first dimension. The touch sensor may have first elongated electrodes that extend along the first dimension and second elongated electrodes that extend along a second dimension that is perpendicular to the first dimension. The second electrodes may be interposed between the first electrodes and the data lines. Pen present electrodes may be used to gather pen present data associated with a stylus on the touch sensor. Adjacent noise sensors may collect noise data that is removed from the pen present data.
    Type: Application
    Filed: November 21, 2014
    Publication date: May 26, 2016
    Inventors: Manu Agarwal, Shahrooz Shahparnia, Vivek Pant
  • Publication number: 20160092010
    Abstract: Synchronization of display functions and various touch, stylus and/or force sensing functions for devices including a variable refresh rate (VRR) display is disclosed. In some examples, touch, stylus and/or force sensing functions can be synchronized with display frames and a display refresh rate can be adjusted by extended blanking of the display for one or more display frames. In other examples, touch, stylus and/or force sensing functions can be synchronized with display sub-frames and a display refresh rate can be adjusted by extended blanking of the display for one or more display sub-frames. Pre-warning synchronization signals can be generated to prepare one or more scan controllers to implement the appropriate scan events during and after extended blanking periods. Latency between the scan results and the corresponding image on the display can be corrected in software and/or firmware by time-stamping scan results or by dropping scan results from uncompleted scans.
    Type: Application
    Filed: September 29, 2014
    Publication date: March 31, 2016
    Inventors: Manu AGARWAL, Christopher Tann, Brijesh Tripathi, Martin Paul Grunthaner
  • Publication number: 20160048266
    Abstract: An optically transparent force sensor element compares a force reading from a first strain-sensitive film element with a second strain-sensitive film element, having a compliant and thermally conductive intermediate layer positioned therebetween to compensate for temperature changes. While in the idle state, the optically transparent force sensor can be periodically calibrated to account for additional changes in temperature.
    Type: Application
    Filed: July 8, 2015
    Publication date: February 18, 2016
    Inventors: John S. Smith, Manu Agarwal
  • Publication number: 20150355762
    Abstract: Systems, apparatuses, and methods for performing mid-frame blanking. A first portion of a frame is driven to a display and then a first mid-frame blanking interval is generated. Following this first mid-frame blanking interval, a second portion of the frame is driven to the display, followed by a second mid-frame blanking interval, followed by a third portion of the frame, and so on. Any number of mid-frame blanking intervals may be introduced in a given frame. During each mid-frame blanking interval, touch sensing is performed to detect touch events on the screen for in-cell touch type displays. For displays with touch sensors electrically separated from the display common voltage layer, special sense scan steps are performed during mid-frame blanking intervals. By performing touch sensing or special sense scan steps during a frame rather than only at the end of a frame, the performance of touch sensing is improved.
    Type: Application
    Filed: June 4, 2014
    Publication date: December 10, 2015
    Inventors: Brijesh Tripathi, Manu Agarwal, Peter F. Holland