| PERCEPTIVE PIXEL INC. Patent applications |
| Patent application number | Title | Published |
|---|
| 20120110431 | Touch-Based Annotation System with Temporary Modes - One embodiment provides a system for processing gesture inputs on a touch screen display. The system receives a gesture input on the touch screen display. When the gesture is recognized as invoking an annotation canvas, the system determines the height, width and location of an annotation canvas, and displays the annotation canvas on the touch screen display. Then, in response to an input gesture within the annotation canvas, the system recognizes the gesture as an annotation gesture, and executes the annotation gesture. In response to receiving an input gesture outside of the annotation canvas, the gesture is interpreted by the system as a navigation input. | 05-03-2012 |
| 20120038583 | FORCE AND TRUE CAPACITIVE TOUCH MEASUREMENT TECHNIQUES FOR CAPACITIVE TOUCH SENSORS - Methods, systems, and apparatus relate to touch sensors that are configured to measure a true capacitive touch and a force applied to the sensor from a user. Some implementations involve the measurement of force and true capacitive touch simultaneously in a touch capacitive sensor. | 02-16-2012 |
| 20120013565 | Techniques for Locally Improving Signal to Noise in a Capacitive Touch Sensor - Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for digital signal processing (DSP) techniques for generally improving a signal-to-noise ratio (SNR) of capacitive touch sensors. | 01-19-2012 |
| 20120013564 | Capacitive Touch Sensor Having Correlation with a Receiver - Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for digital signal processing (DSP) techniques for generally improving a signal-to-noise ratio (SNR) of capacitive touch sensors. | 01-19-2012 |
| 20120013546 | Capacitive Touch Sensor Having Code-Divided and Time-Divided Transmit Waveforms - Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for digital signal processing (DSP) techniques for generally improving a signal-to-noise ratio (SNR) of capacitive touch sensors. | 01-19-2012 |
| 20110096025 | Projected Capacitive Touch Sensing - Methods, systems, and apparatus relate to touch sensors that are configured to measure input applied to the sensor from a user. Some implementations involve the measurement of changes in capacitance between pairs of adjacent patterned electrodes to detect input at a touch sensor. | 04-28-2011 |
| 20100302196 | Touch Sensing - A touch-screen device includes an imaging waveguide, in which the imaging waveguide has a radiation receiving surface and an imaging surface different than the radiation receiving surface. The imaging waveguide is configured to receive, at the radiation receiving surface, radiation emitted by a contact receiving structure, and transmit the received radiation from a position on the radiation receiving surface to a position and/or angle of incidence on the imaging surface as a function of the position on the radiation receiving surface at which the transmitted radiation was received. An imaging sensor coupled to the imaging surface of the imaging optical waveguide is configured to detect radiation incident upon the imaging surface of the imaging optical waveguide. A processing device coupled to the imaging sensor is configured to determine contact points on the exposed contact surface of a contact receiving structure based on radiation detected by the imaging sensor. | 12-02-2010 |
