Patent application number | Description | Published |
20110267304 | MULTI-CHIP TOUCH SCREENS - The exemplary devices and processing techniques allow multiple measurement devices or chips to work together to sample a screen that is larger than one measurement device might sample, by allowing sharing X or drive lines amongst the measurements devices. Particular implementations of the subject matter described in this specification can be implemented so as to realize one or more of the following optional advantages. The sharing of the drive lines may allow for a screen sized or otherwise configured to have more measurement nodes than would be produced by the sum of the nodes that could be measured by the individual devices. For a screen that requires multiple measurement devices, the drive line sharing thus may allow use of a smaller number of measuring devices. | 11-03-2011 |
20110291944 | SYSTEMS AND METHODS FOR IMPROVED TOUCH SCREEN RESPONSE - This document discloses examples of systems, methods, and articles of manufacture that may provide one or more advantages relating to determining which touch on a touch screen is intended and which touch or touches are inadvertent. | 12-01-2011 |
20120235937 | Two-Dimensional Touch Sensors - In a touch sensor, as well as providing touch position data, additional data is provided on the shape of the touch. This is achieved by having sampling nodes on a finer mesh than the size of the actuating object, typically a finger, so each finger touch activates a group of adjacent nodes on the sensor. In this way, each touch has a shape formed by the activated nodes. The shape allows the touch sensor to report an angle with each touch and data indicating how elongate the touch is, preferably both together as a vector in which the direction of the vector gives the angle and the magnitude of the vector gives the ellipticity. For each frame of data collected from the sensor array, the sensor outputs an (x, y) coordinate of touch position and a further (x, y) coordinate of a shape vector. | 09-20-2012 |
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 |
20130141382 | Touch Sensor With Force Sensing - In one embodiment, a touch sensor includes a panel, a plurality of sense electrodes underlying the panel, a plane of known potential underlying the plurality of sense electrodes, and a controller communicatively coupled to the plurality of sense electrodes. The controller is configured to determine whether an object has pressed the panel by: measuring capacitances at each of a plurality of sense electrodes across the panel, the capacitances associated with a distance between the plurality of sense electrodes and the plane of known potential, comparing the measured capacitances across the panel with one or more criteria associated with a deformation of the panel, and determining, based on the comparison, whether an object has pressed the panel. | 06-06-2013 |
20130147752 | Touch Sensor With Adaptive Touch Detection Thresholding - In one embodiment, a method includes receiving, by a controller coupled to a touch sensor, a plurality of signals from a plurality of sense electrodes, the plurality of signals indicative of an amount of capacitance between the touch sensor and an external object. The method further includes accessing a stored threshold value, determining a strength of a charge return path between the touch sensor and a ground, and adjusting the stored threshold value based on the determined strength of the charge return path. The threshold value indicates a threshold magnitude of the signals from the plurality of sense electrodes to process as a touch by the external object. | 06-13-2013 |
20130162583 | Enhanced Touch Detection Methods - In one embodiment, a method includes sending a first set of signals to a first set of lines of a touch sensor. The method also includes receiving a second set of signals on a second set of lines of the touch sensor in response to sending the first set of signals. The second set of lines are capacitively coupled to the first set of lines. The method includes sending a third set of signals and receiving a fourth set of signals. The fourth set of signals is capacitively generated based on the third set of signals. The method also includes determining a fifth set of signals by compensating the second set of signals based on the fourth set of signals and determining whether a touch occurred based on the fifth set of signals. | 06-27-2013 |
20140253488 | Touch Panel Deformation Compensation - In one embodiment, a method includes receiving, from a touch sensor of a device, one or more signals corresponding to touch or proximity inputs within a touch-sensitive area of the touch sensor. The touch sensor comprising one or more nodes. The method also includes applying an offset to one or more of the signals. The offset corresponding to a variation in a distance between a touch panel and a ground plane or display of the device. The method also includes determining whether a touch input to the touch sensor has occurred based at least in part on the signals and the offset as applied. | 09-11-2014 |