Patent application number | Description | Published |
20130038378 | Touch Sensing With A Common Driver - In one embodiment, an apparatus includes a touch sensor including drive electrodes. The apparatus also includes sense electrodes arranged along a first axis and a second axis. The first and second axes are substantially perpendicular to each other. The apparatus also includes one or more computer-readable non-transitory storage media coupled to the touch sensor that embody logic that drives all the drive electrodes substantially simultaneously with a common drive signal. | 02-14-2013 |
20130106713 | Active Stylus with Filter Having a Threshold | 05-02-2013 |
20130106714 | Power Management System for Active Stylus | 05-02-2013 |
20130106715 | Active Stylus with Filter | 05-02-2013 |
20130106716 | Selective Scan of Touch-Sensitive Area for Passive or Active Touch or Proximity Input | 05-02-2013 |
20130106721 | Active Stylus With Surface-Modification Materials | 05-02-2013 |
20130106723 | Inductive Charging for Active Stylus | 05-02-2013 |
20130106724 | Executing Gestures With Active Stylus | 05-02-2013 |
20130106731 | Executing Gestures with Active Stylus | 05-02-2013 |
20130106741 | Active Stylus with Tactile Input and Output | 05-02-2013 |
20130106760 | Communication Between a Master Active Stylus and a Slave Touch-Sensor Device | 05-02-2013 |
20130106764 | Scaling Voltage for Data Communication Between Active Stylus and Touch-Sensor Device | 05-02-2013 |
20130106767 | Modulating Drive Signal for Communication Between Active Stylus and Touch-Sensor Device | 05-02-2013 |
20130106769 | Capacitive and Inductive Sensing | 05-02-2013 |
20130106770 | Active Stylus with Energy Harvesting | 05-02-2013 |
20130106794 | Capacitive Force Sensor | 05-02-2013 |
20130106795 | Dynamic Adjustment of Received Signal Threshold in an Active Stylus | 05-02-2013 |
20130106797 | Tuning Algorithm for Noise Reduction in an Active Stylus | 05-02-2013 |
20130271163 | Current Mirror Self-Capacitance Measurement - In one embodiment, a method includes applying a first current to a capacitance of a touch sensor. The application of the first current to the capacitance for a first amount of time modifies the voltage at the capacitance from the reference voltage level to a first pre-determined voltage level. The method also includes applying a second current to an integration capacitor. The second current is proportional to the first current. The application of the second current to the integration capacitor for the first amount of time modifies the voltage at the integration capacitor from the reference voltage level to a first charging voltage level. The method also includes determining whether a touch input to the touch sensor has occurred based on the first charging voltage level. | 10-17-2013 |
20130278538 | Self-Capacitance Measurement - In one embodiment, a method includes modifying an amount of charge of a capacitance of a touch sensor. The modified amount of charge resulting in a voltage at the capacitance being a first pre-determined voltage level. The method also includes applying a first pre-determined amount of charge to the capacitance. The application of the first pre-determined amount of charge to the capacitance modifying the voltage at the capacitance from the first pre-determined voltage level to a first charging voltage level. The method also includes determining a first difference between the first charging voltage level and a reference voltage level; and determining whether a touch input to the touch sensor has occurred based on the first difference. | 10-24-2013 |
20140043279 | Active Stylus Self-Capacitance Measurement - In one embodiment, a method includes modifying an amount of charge of a capacitance of a touch sensor. The modified amount of charge results in a voltage at the capacitance being a first pre-determined voltage level. The method also includes applying a first pre-determined amount of charge to the capacitance. The application of the first pre-determined amount of charge to the capacitance modifies the voltage at the capacitance from the first pre-determined voltage level to a first charging voltage level. The method also includes determining a first voltage at a sampling capacitor. The first voltage is proportional to a difference between the first charging voltage level and a reference voltage level. The method also includes determining whether a touch and stylus input to the touch sensor has occurred based on the first voltage and a second voltage. | 02-13-2014 |
20140062970 | Tuning Algorithm for Noise Reduction in an Active Stylus - In one embodiment, a stylus receives a signal, the stylus being able to wirelessly transmit signals to and receive signals from a device, and the stylus having a plurality of electrodes disposed in a tip of the stylus. The stylus compares a first value of the signal to a first threshold and determines whether to start a timing period based at least in part on this comparison. If the timing period is started, the stylus compares a second value of the signal to a second threshold and determines whether to stop the timing period based at least in part on this second comparison. If the timing period is stopped, the stylus determines whether the duration of the timing period is within a pre-determined range of timing period values. If so, the stylus processes the signal. | 03-06-2014 |
20140292721 | CURRENT MIRROR SELF-CAPACITANCE MEASUREMENT - In one embodiment, a method includes applying a first current to a capacitance of a touch sensor. The application of the first current to the capacitance for a first amount of time modifies the voltage at the capacitance from the reference voltage level to a first pre-determined voltage level. The method also includes applying a second current to an integration capacitor. The second current is proportional to the first current. The application of the second current to the integration capacitor for the first amount of time modifies the voltage at the integration capacitor from the reference voltage level to a first charging voltage level. The method also includes determining whether a touch input to the touch sensor has occurred based on the first charging voltage level. | 10-02-2014 |
20140340359 | Selective Scan of Touch-Sensitive Area for Passive or Active Touch or Proximity Input - In certain embodiments, an apparatus includes a touch sensor that includes a touch-sensitive area and a touch-sensor controller. The touch-sensor controller is operable to: select a first region around a determined first location associated with an object within the touch-sensitive area, select a second region around the determined first location associated with the object within the touch-sensitive area, and scan two or more electrodes within the first region and two or more electrodes within the second region to determine a second location associated with the object within the touch-sensitive area. | 11-20-2014 |
20150035783 | POSITION DETECTION OF AN OBJECT WITHIN PROXIMITY OF A TOUCH SENSOR - In one embodiment, a method includes applying a drive signal to a first electrode of a sensor to generate an electric field extending at least in part from the first electrode toward a second electrode of the sensor. The electric field includes a first portion and a second portion, and the first portion extends farther away from a plane of the first electrode than the second portion. The method also includes shunting the second portion of the electric field away from the second electrode and receiving a sense signal from the second electrode produced at least in part by the first portion of the electric field. The sense signal indicates whether an object has come within proximity of the sensor. | 02-05-2015 |
20150035784 | Dynamic Clustering Of Touch Sensor Electrodes - In one embodiment, an apparatus includes a sensor having a plurality of electrodes and a controller having a processor and a memory. The memory includes logic operable, when executed by the processor, to connect each electrode of a first subset of the plurality of electrodes, apply voltage to the first subset, and determine a first value associated with a capacitance of the first subset. Based at least on the first value, the logic is further operable to connect each electrode of a second subset of the plurality of electrodes, the second subset having fewer electrodes than the first subset, apply voltage to the second subset, and determine a second value associated with a capacitance of the second subset. | 02-05-2015 |
20150035789 | Dynamic Configuration Of Touch Sensor Electrode Clusters - An apparatus of one embodiment includes a sensor having a plurality of electrodes and a controller having a processor and a memory. The memory includes logic operable to configure the electrodes to form a first cluster pattern having a plurality of first clusters of two or more electrodes, apply voltage to each first cluster, and determine a plurality of first values associated with a capacitance of a first cluster. The logic is further operable to configure the electrodes to form a second cluster pattern having a plurality of second clusters of two or more electrodes, apply voltage to each second cluster, and determine a plurality of second values associated with a capacitance of a second cluster. At least one second cluster is interleaved with an adjacent second cluster. The logic is further operable to determine a position of an object based at least on the second values. | 02-05-2015 |