Patent application number | Description | Published |
20130257792 | SYSTEMS AND METHODS FOR DETERMINING USER INPUT USING POSITION INFORMATION AND FORCE SENSING - The embodiments described herein provide devices and methods that facilitate improved input device performance. Specifically, the devices and methods provide improved resistance to the effects of errors that may be caused by the motion of detected objects on such input devices, and in particular, to the effect of aliasing errors on input devices that use capacitive techniques to generate images of sensor values. The devices and methods provide improved resistance to the effects of aliasing errors by using force values indicative of force applied to the input surface. Specifically, the devices and methods use the force value to disambiguate determined position information for objects detected in the images of sensor values. This disambiguation of position information can lead to a reduction in the effects of aliasing errors and can thus improve the accuracy and usability of the input device. | 10-03-2013 |
20140267061 | SYSTEM AND METHOD FOR PRE-TOUCH GESTURES IN SENSOR DEVICES - A processing system for an input device is configured to communicate with a host system and comprises a sensor module and a determination module. The sensor module comprises sensor circuitry and is configured to transmit transmitter signals with a plurality of transmitter electrodes and receive resulting signals comprising effects corresponding to the transmitter signals. The determination module is configured to determine, based on the resulting signals and a touch threshold, first positional information associated with a pre-touch state of an input object and second positional information associated with a touch event by the input object. The determination module is further configured to communicate data associated with the first positional information to the host system only upon occurrence of the touch event. | 09-18-2014 |
20140267080 | SYSTEMS AND METHODS FOR IMAGE FILTERING IN SENSOR DEVICES - A processing system for an input device includes a sensor module, a filter module, and a determination module. The sensor module is configured to drive a plurality of transmitter electrodes with transmitter signals; receive, with a plurality of receiver electrodes, resulting signals comprising effects corresponding to the transmitter signals; and produce a first sensor image based on the resulting signals. The filter module is configured to produce a transformed sensor image by applying a spatial filter to the first sensor image. The determination module is configured to positional information and/or the validity of a baseline for the input device based on the transformed sensor image. | 09-18-2014 |
20150015539 | HYBRID CAPACITIVE BASELINE MANAGEMENT - In a method of managing baselines of a capacitive sensing input device, a transcapacitive baseline, a first absolute capacitive baseline, and a second absolute capacitive baseline are acquired with a plurality of sensor electrodes of the capacitive sensing input device. A transcapacitive image, a first absolute capacitive profile, and a second absolute capacitive profile are acquired with the plurality of sensor electrodes. The transcapacitive baseline, the first absolute capacitive baseline, and the second absolute capacitive baseline are managed based on a value of at least one of the first absolute capacitive profile and the second absolute capacitive profile. | 01-15-2015 |