Patent application number | Description | Published |
20130057480 | Signal-to-Noise Ratio in Touch Sensors - In one embodiment, a method includes driving at least two of multiple drive lines of a touch sensor at a time, each with one or more electrical pulses. | 03-07-2013 |
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 |
20130106719 | Data Transfer from Active Stylus to Configure a Device or Application | 05-02-2013 |
20130106722 | Pulse- Or Frame-Based Communication Using Active Stylus | 05-02-2013 |
20130106723 | Inductive Charging for Active Stylus | 05-02-2013 |
20130106724 | Executing Gestures With Active Stylus | 05-02-2013 |
20130106725 | Data Transfer from Active Stylus | 05-02-2013 |
20130106731 | Executing Gestures with Active Stylus | 05-02-2013 |
20130106740 | Touch-Sensitive System with Motion Filtering | 05-02-2013 |
20130106741 | Active Stylus with Tactile Input and Output | 05-02-2013 |
20130106759 | Narrow-Band Touch Detection | 05-02-2013 |
20130106760 | Communication Between a Master Active Stylus and a Slave Touch-Sensor Device | 05-02-2013 |
20130106763 | Power Management System for Active Stylus | 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 |
20130106771 | Active-Stylus Nib with Rolling-Ball Tip | 05-02-2013 |
20130106794 | Capacitive Force Sensor | 05-02-2013 |
20130106795 | Dynamic Adjustment of Received Signal Threshold in an Active Stylus | 05-02-2013 |
20130106796 | Active Stylus with Capacitive Buttons and Sliders | 05-02-2013 |
20130106797 | Tuning Algorithm for Noise Reduction in an Active Stylus | 05-02-2013 |
20130106799 | Authenticating with Active Stylus | 05-02-2013 |
20130106800 | Authenticating with Active Stylus | 05-02-2013 |
20130219159 | SINGLE-WIRE BOOTLOADER FOR TARGET DEVICE WITH SELF-PROGRAMMING CAPABILITY - A single-wire bootloader software architecture is disclosed that interfaces with any host device that has a serial port to program memory of a target device using only a single general-purpose I/O pin. The single-wire bootloader does not require any chip hardware resource modules. Instead, the single-wire bootloader implements a single-wire UART in software that monitors a single general-purpose I/O pin for commands from the host device. | 08-22-2013 |
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 |
20140104186 | Active Stylus With A Parallel Communication Channel - A method of one embodiment includes generating, by a stylus, a composite signal. The composite signal includes a first signal having a first frequency, the first signal being used by a touch-sensing device to determine a position of the stylus relative to the touch-sensing device, and a second signal having a second frequency. The second signal may include status information such as an amount of force exerted on the stylus, battery information, orientation information, information indicating whether the stylus is within a threshold distance of the touch-sensing device, information indicating a status of a button of the stylus, and/or information indicating input from a user of the stylus. Furthermore, the second frequency is higher than the first frequency. The stylus sends the composite signal to the touch-sensing device, and an electrode array of the touch-sensing device may receive the composite signal. The touch-sensing device may determine a position of the stylus by processing the composite signal and may also determine the status information by processing the composite signal. | 04-17-2014 |
20140104187 | Stylus Position System - A system of one embodiment includes a touch-sensing device and a stylus. The touch sensing device includes an electrode array, which includes a plurality of electrode line pairs, and a controller. Each electrode line pair includes a first and second electrode line to send a first and second signal, respectively. The stylus includes a sensor to measure the first and second signals, a signal processor to determine position information, and a transmitter to send position information to the touch-sensing device. | 04-17-2014 |
20140104188 | Active Stylus Communication And Position System - A method of one embodiment includes generating, by a touch-sensing device, a first signal comprising information identifying a first electrode line of an electrode array of the touch-sensing device, the first signal having a first strength. The first electrode sends the first signal to a stylus, which receives the first signal, the first signal having a received strength. The stylus sends a second signal comprising information based on the received first signal, and the touch-sensing device receives the second signal. A position of the stylus is determined based at least in part on the information identifying the first electrode line and the received strength of the first signal. | 04-17-2014 |
20140111464 | Touch Sensor With Simultaneously Driven Drive Electrodes - In one embodiment, a method comprises generating, by a controller, a plurality of drive signals. The method further includes simultaneously transmitting, by the controller, the plurality of drive signals to a plurality of drive electrodes disposed on a touch sensor. The method further includes sensing a sense electrode of a plurality of sense electrodes disposed on the touch sensor. The sensing comprises measuring, for each drive electrode of the plurality of drive electrodes, at least one value indicative of a capacitance between the sense electrode and the drive electrode. | 04-24-2014 |
20140118290 | CHIRP SIGNAL TOUCH SENSOR - In one embodiment, an apparatus includes a drive electrode, a sense electrode, a detector, and a controller. The drive electrode is stimulated by an electric signal that has a frequency that varies in time. The sense electrode is capacitatively coupled to the drive electrode. The detector performs a measurement associated with the sense electrode. The controller determines whether a touch on the touch sensor occurred by determining whether the measurement deviates from an expected value by more than an amount. | 05-01-2014 |
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 |