Patent application number | Description | Published |
20110057670 | SENSING AND DEFINING AN INPUT OBJECT - A mutual capacitance sensor device comprises a plurality of receiver sensor electrodes, a plurality of transmitter sensor electrodes, and a processing system coupled with the plurality of receiver sensor electrodes and coupled with the plurality of transmitter sensor electrodes. The processing system is configured for acquiring a capacitive image from the pluralities of sensor electrodes. The processing system is also configured for correlating a part of the capacitive image with at least one input object template image to determine both a presence and a type of an input object interacting with the mutual capacitance sensor device. | 03-10-2011 |
20110210939 | VARYING DEMODULATION TO AVOID INTERFERENCE - In a method of interference avoidance for a capacitive sensor device, a transmitter signal is transmitted with a transmitter electrode of the capacitive sensor device. A resulting signal is received with a receiver electrode of the capacitive sensor device. The resulting signal corresponds to the transmitter signal. A first demodulated output is acquired by demodulating the resulting signal in a first way. A second demodulated output is acquired by demodulating the resulting signal in a second way, where the second way and the first way differ. A shift is made from using the first demodulated output for determining positional information to using the second demodulated output for determining positional information. The shift is based at least in part upon an amount of interference. | 09-01-2011 |
20110210941 | SENSING DURING NON-DISPLAY UPDATE TIME TO AVOID INTERFERENCE - In a method of capacitive sensing using an integrated capacitive sensor device and display device, a transmitter signal is transmitted with a combination electrode of the integrated capacitive sensor device and display device. The combination electrode is configured for both capacitive sensing and display updating. The transmitter signal transitions at least twice during a non-display update time period associated with row update of the display device. A display of the display device is updated during an update time period. A resulting signal is received with a receiver electrode of the integrated capacitive sensor device and display device during the non-display update time period. The resulting signal corresponds to the transmitter signal. | 09-01-2011 |
20120146938 | SYSTEM AND METHOD FOR DETERMINING USER INPUT USING POLYGONS - Devices and method are provided that facilitate improved input device performance. Specifically, the systems and methods are configured to identify a portion of an image of sensor values as corresponding to at least one sensed object in the sensing region, determine a polygon corresponding to the identified portion of the image, and determine a contact characterization of the at least one sensed object based on the polygon. The determination of a polygon corresponding to a sensed object facilitates improved contact characterization of the sensed object. For example, the determined polygon may be used to determine if the sensed object is actually more than one object. As a second example, the determined polygon may be used to determine the orientation of the sensed object. In addition, determined polygons may be used to more accurately track changes in the position of the sensed object. | 06-14-2012 |
20120146939 | SYSTEM AND METHOD FOR DETERMINING USER INPUT FROM OCCLUDED OBJECTS - The embodiments described herein provide devices and methods that facilitate improved input devices. In one embodiment, an input device is configured to determine if a sensed object includes an occluded portion using an image representative of sensor values, determine a portion of the image corresponding to the sensed object, and approximate a boundary representation of the sensed object wherein if the sensed object does include the occluded portion, the boundary representation encompasses at least part of the occluded portion of the sensed object and at least part of a non-occluded portion of the sensed object. The determination of a boundary representation corresponding to a sensed object facilitates improved characterization of the sensed object. For example, the determined boundary representation may be used to more accurately track changes in the position of the sensed object as the sensed object moves out of the sensing region. | 06-14-2012 |
20120310572 | SENSING AND DEFINING AN INPUT OBJECT - An input device comprises a display, a plurality of sensor electrodes, and a processing system. The plurality of sensor electrodes is configured to detect an input object in a sensing region of the input device. The sensing region overlaps the display. The processing system is coupled with the plurality of sensor electrodes. The processing system is configured for: acquiring a capacitive image from the plurality of sensor electrodes; and correlating a part of the capacitive image with at least one input object template image to determine a type of an input object interacting with the input device. | 12-06-2012 |
20140002114 | SYSTEMS AND METHODS FOR DETERMINING TYPES OF USER INPUT | 01-02-2014 |
20140002340 | SYSTEMS AND METHODS FOR SWITCHING SENSING REGIMES FOR GLOVED AND UNGLOVED USER INPUT | 01-02-2014 |
20140092031 | SYSTEM AND METHOD FOR LOW POWER INPUT OBJECT DETECTION AND INTERACTION - In a method of operating a touch screen, an object interaction is detected with the touch screen while in a first doze mode. It is determined if a detected object interaction with the touch screen is a valid input object interaction with the touch screen. In response to determining the object interaction is a valid input object interaction, the touch screen is transitioned from the first doze mode to a gesture recognition mode. The touch screen is transitioned from the gesture recognition mode to an active mode in response to a determination of a valid gesture interaction with the touch screen by the input object. | 04-03-2014 |
20150054785 | SYSTEM AND METHOD FOR DETERMINING USER INPUT USING POLYGONS - Devices and method are provided that facilitate improved input device performance. Specifically, the systems and methods are configured to identify a portion of an image of sensor values as corresponding to at least one sensed object in the sensing region, determine a polygon corresponding to the identified portion of the image, and determine a contact characterization of the at least one sensed object based on the polygon. The determination of a polygon corresponding to a sensed object facilitates improved contact characterization of the sensed object. For example, the determined polygon may be used to determine if the sensed object is actually more than one object. As a second example, the determined polygon may be used to determine the orientation of the sensed object. In addition, determined polygons may be used to more accurately track changes in the position of the sensed object. | 02-26-2015 |
20150084908 | DEVICE AND METHOD FOR SYNCHRONIZING DISPLAY AND TOUCH CONTROLLER WITH HOST POLLING - Devices, systems, and methods are provided for coordinating the interaction between a touch screen controller and a display controller in an electronic device of the type including a host processor, a touch screen controller configured to acquire capacitive measurements from a touch screen, and a display controller configured to update a display at a refresh frequency and phase. The method includes: sharing a synchronization signal between the display controller and the host processor, the synchronization signal indicative of the refresh frequency and phase; polling the touch screen controller, by the host processor, based on the synchronization signal; and in response to the polling, acquiring the capacitive measurements by the touch screen controller at a sampling rate and phase determined by the refresh frequency and phase. | 03-26-2015 |