Patent
Negative pixel compensation.
TLDR
In this paper, negative pixel compensation in a touch sensor panel is disclosed, where the panel can compensate for a negative pixel effect in touch signal outputs due to poor grounding of an object touching the panel.Abstract:
Negative pixel compensation in a touch sensor panel is disclosed. The panel can compensate for a negative pixel effect in touch signal outputs due to poor grounding of an object touching the panel. To do so, the panel can reconstruct a captured touch image to remove negative pixel values indicative of the negative pixel effect and compute a composite image from the captured image and the reconstructed image to replace the captured image. In addition or alternatively, the panel can reconstruct a captured touch image to remove negative pixel values indicative of the negative pixel effect and replace the captured image with the reconstructed image.read more
Citations
More filters
Patent
Capacitance to code converter with sigma-delta modulator
TL;DR: An apparatus and method for converting a capacitance measured on a sensor element to a digital code is described in this article, where the switching capacitor is in a feedback loop of the sigma-delta modulator.
Patent
Predictive touch surface scanning
TL;DR: In this paper, a method for locating a conductive object at a touch-sensing surface may include detecting a first resolved location for the conductive objects at the touch surface based on a first scan of the touch sensing surface and determining a second resolved location by performing a second scan of a subset of sensor elements.
Patent
Apparatus and method for reducing average scan rate to detect a conductive object on a sensing device
TL;DR: In this paper, a switch circuit is configured to couple each of a plurality of plurality of capacitive sense elements and a pluralityof capacitance sensors in different modes, such that the switch circuit can couple the plurality of sense elements to individual ones of the two or more of the sense elements in one of the groups.
Patent
Capacitive sensor device
TL;DR: In this article, a capacitive sensor device consisting of a first sensor, a second sensor, and a processing system coupled to the first sensor and the second sensor electrode is configured to acquire a first capacitive measurement by emitting and receiving a first electrical signal.
Patent
Dynamic mode switching for fast touch response
TL;DR: In this paper, a method of operating a touch-sensing surface may include performing a first scan of a first set of electrodes of a touch sensing surface, determining a presence of at least one conductive object proximate to the touch sensor.
References
More filters
Patent
Gestures for touch sensitive input devices
Steve Hotelling,Joshua A. Strickon,Brian Q. Huppi,Imran Chaudhri,Greg Christie,Bas Ording,Duncan Robert Kerr,Jonathan P. Ive +7 more
TL;DR: In this article, the authors described a system for processing touch inputs with respect to a multipoint sensing device and identifying at least one multipoint gesture based on the data from the multi-point sensing device.
Patent
Method and apparatus for integrating manual input
TL;DR: In this paper, a simple proximity transduction circuit is placed under each electrode to maximize the signal-to-noise ratio and to reduce wiring complexity, and segmentation processing of each proximity image constructs a group of electrodes corresponding to each distinguishable contacts and extracts shape, position and surface proximity features for each group.
Patent
Object position detector with edge motion feature and gesture recognition
TL;DR: In this paper, the authors proposed a method of generating a signal comprising providing a capacitive touch sensor pad including a matrix of X and Y conductors, developing capacitance profiles in one of an X direction and a Y direction from the matrix, and determining an occurrence of a single gesture through an examination of the capacitance profile, the single gesture including an application of at least two objects on the capacitive sensor pad.
Patent
Multi-functional hand-held device
TL;DR: In this paper, a multi-functional hand-held device capable of configuring user inputs based on how the device is to be used is presented, and a GUI for each of the multiple functions of the devices is presented.
Patent
Multiple fingers contact sensing method for emulating mouse buttons and mouse operations on a touch sensor pad
Stephen J. Bisset,Bernard Kasser +1 more
TL;DR: In this article, a method and apparatus for detecting an operative coupling between one or more fingers or other appropriate objects and a touch pad includes processes for detection of multiple maxima with intermediate minima in appropriate sequences to emulate the operations of cursor control and button actuations in a pointing and control device.