METHOD AND SYSTEM FOR GESTURE IDENTIFICATION
Granted: May 28, 2015
Application Number:
20150145774
A method for gesture identification includes determining a first gesture is performed on a surface sensing region. The first gesture includes at least one input object. The method further includes determining a first action corresponding to the first gesture, and issuing, based on performing the first gesture, a first report reporting the first gesture and the first action. The method further includes determining, within a first predefined length of time subsequent to performing the…
MULTI-PROTOCOL COMBINED RECEIVER
Granted: May 21, 2015
Application Number:
20150143006
A receiver circuit configured to operate in a DisplayPort (DP) mode and a High-Definition Multimedia Interface (HDMI) mode. The receiver circuit includes: termination circuitry configured to receive a DP signal in the DP mode and an HDMI signal in the HDMI mode; and voltage common-mode (VCM) level shifter circuitry configured to operate as a pass-through for the DP signal in the DP mode and generate a converted HDMI signal from the HDMI signal in the HDMI mode.
SINGLE-LAYER MUTI-TOUCH CAPACITIVE IMAGING SENSOR
Granted: April 30, 2015
Application Number:
20150116254
Embodiments of the invention generally provide an input device having a reduced system complexity and low production cost. As the size of input devices, such as touch pads and other similar devices increase, the need for an input device that is able to maintain or even improve the touch sensing accuracy without greatly increasing the manufacturing cost becomes increasingly important. Embodiments of the invention may provide an input device that includes an array of capacitive sensing…
GHOST SUPPRESSION USING HYBRID CAPACITIVE SENSING
Granted: April 30, 2015
Application Number:
20150116253
A processing system for a capacitive input device includes functionality to perform a trans capacitance measurement of an array of sensor electrodes, determine a presence of at least one input object in the sensing region from the trans capacitance measurement, perform an absolute capacitive measurement along a first axis of the array of sensor electrodes, and suppress the determined presence of at least one input object based on a lack of a correlated input object presence from the…
CURRENT-MODE COARSE-BASELINE-CORRECTION
Granted: April 30, 2015
Application Number:
20150115977
The embodiments herein are generally directed to using a current-mode CBC circuit to maintain a voltage bias setting at a receiver when performing capacitive sensing. To do so, the CBC circuit may compensate for the change in voltage at a receiver by providing a current at the input of the receiver. Instead of using a passive CBC capacitor for each receiver, the input device may use a single CBC capacitor and a plurality of current mirrors to source and sink the current required to…
PARASITIC CAPACITANCE FILTER FOR SINGLE-LAYER CAPACITIVE IMAGING SENSORS
Granted: April 23, 2015
Application Number:
20150109233
An approach is provided for estimating and correcting parasitic responses of a touch sensor device. The input device measures a first capacitance signal generated by a first pixel that is covered at least partially by an input object. The input device measures a second capacitance signal generated by a second pixel that is covered at least partially by the input object. The input device measures a third capacitance signal generated by a third pixel. Based on at least the first…
IN-CELL LOW POWER MODES
Granted: April 16, 2015
Application Number:
20150103034
Embodiments described herein include a method and apparatus for capacitive sensing in input devices integrated with a display device. In one embodiment, a processing system for a display device comprising an integrated capacitive sensing device is provided that includes a display driver module, a transmitter module, and a receiver module. The display driver and transmitter modules are configured to operate in a display update mode and a sleep mode. The receiver module is configured to,…
MODULATED POWER SUPPLY FOR REDUCED PARASITIC CAPACITANCE
Granted: April 2, 2015
Application Number:
20150091850
An input device comprising a display device having an integrated capacitive sensing device. The input device includes a plurality of sensor electrodes a plurality of display electrodes, a modulated power supply configured to provide a modulated reference signal, and a processing system. The processing system includes a sensor module configured to drive a plurality of sensor electrodes with a modulated capacitive sensing signal that is based on the modulated reference signal for…
Non-Orthogonal Coding Techniques for Optical Sensing
Granted: April 2, 2015
Application Number:
20150091872
A processing system includes a transmitter module, a receiver module, and a determination module. The transmitter module includes drives a first optical transmitter with a first optical coded signal based on a first code, and drives a second optical transmitter with a second optical coded signal based on a second code. The first code and the second code are non-orthogonal, and the first optical transmitter and the second optical transmitter transmit at overlapping times. The receiver…
SIMULTANEOUS DISPLAY UPDATING AND CAPACITIVE SENSING FOR AN INTEGRATED DEVICE
Granted: April 2, 2015
Application Number:
20150091851
Embodiments of the invention generally provide an input device with an integrated display that drives a capacitance sensing signal on a sensor electrode in parallel with driving a display signal onto a display electrode. To mitigate the interference between the two signals, the input device synchronizes the frequency of the capacitance sensing signal to a line rate used when performing display updating—i.e., the time period used by the integrated display to update a row of pixels. In…
MULTI-SENSOR TOUCH INTEGRATED DISPLAY DRIVER CONFIGURATION FOR CAPACITIVE SENSING DEVICES
Granted: April 2, 2015
Application Number:
20150091849
Embodiments of the disclosure generally provide an integrated control system having an integrated controller that is configured to provide both display updating signals to a display device and a capacitive sensing signal to a sensor electrode that is disposed within the integrated input device. The internal and/or external signal routing configurations described herein can be adapted to reduce signal routing complexity typically found in conventional devices and reduce the effect of…
TARGETED TRANSCAPACITANCE SENSING FOR A MATRIX SENSOR
Granted: April 2, 2015
Application Number:
20150091848
Embodiments described herein include a display device having a capacitive sensing device, a processing system and a method for detecting presence of an input object using a capacitive sensing device. In one embodiment, the display device includes a plurality of sensor electrodes arranged in a matrix. The processing system performs absolute capacitive sensing with the matrix of sensor electrodes. When an area of interest is detected using the absolute capacitive sensing techniques, the…
MODULATED BACK PLATE FOR CAPACITIVE SENSING
Granted: April 2, 2015
Application Number:
20150091846
Embodiments described herein include an input device comprising a display device having an integrated capacitive sensing device, a processing system, and a method for detecting presence of an input object. In each of these embodiments, a modulation source provides modulation signals between a back plate and a system ground of the input device. Other embodiments include a display device having a capacitive sensing device, a processing system and a method for detecting presence of an input…
DISPLAY GUARDING TECHNIQUES
Granted: April 2, 2015
Application Number:
20150091843
Embodiments described herein mitigate the effect of a coupling capacitance between a sensor electrode in a touch sensor and a display electrode in a display screen. An input device, which includes the touch sensor and display screen, may transmit a guarding signal on the display electrodes when performing capacitive sensing. In one embodiment, the guarding signal may have similar characteristics as a modulated signal (e.g., similar amplitude and/or phase) driven on the sensor electrode…
MATRIX SENSOR FOR IMAGE TOUCH SENSING
Granted: April 2, 2015
Application Number:
20150091842
Embodiments described herein include a display device having a capacitive sensing device, a processing system and a method for detecting presence of an input object using a capacitive sensing device, all of which include a grid electrode for improved absolute sensing. Other embodiments include a display device having a capacitive sensing device, a processing system and a method for detecting presence of an input object using a capacitive sensing device, wherein the capacitive sensing…
FAR-FIELD SENSING WITH A DISPLAY DEVICE HAVING AN INTEGRATED SENSING DEVICE
Granted: April 2, 2015
Application Number:
20150091840
Embodiments of the present invention generally provide an input device comprising a display device integrated with a capacitive sensing device. The input device includes a plurality of transmitter electrodes, each transmitter electrode comprising one or more common electrodes configured to be driven for display updating and capacitive sensing, a plurality of near-field receiver electrodes configured to perform capacitive sensing in a near-field sensing region, and a plurality of…
TRANSCAPACITIVE INPUT OBJECT SENSING
Granted: April 2, 2015
Application Number:
20150091838
In a method of input object sensing, a plurality of transmitter electrodes are driven in a first way to acquire a first sub-frame image with the plurality of transmitter electrodes and a plurality of receiver electrodes of a sensor electrode pattern during a first sub-frame of a transcapacitive sensing frame. The plurality of transmitter electrodes is also driven in a second way to acquire a second sub-frame image with the plurality of transmitter electrodes and the plurality of receiver…
MATRIX SENSOR FOR IMAGE TOUCH SENSING
Granted: April 2, 2015
Application Number:
20150091587
Embodiments described herein include a display device having a capacitive sensing device, a processing system and a method for detecting presence of an input object using a capacitive sensing device. In one embodiment, the display device includes a plurality of sensor electrodes, a field shaping electrode, and a processing system. Each sensor electrode includes at least one common electrode. Dimensions of each sensor electrode correspond to dimension of pixel elements of the display…
USING A PRINTED CIRCUIT TO OFFSET CHARGE DURING CAPACITIVE SENSING
Granted: March 26, 2015
Application Number:
20150084876
In a method of capacitive sensing an absolute capacitive sensing signal is driven through at least one of a plurality of routing traces of a printed circuit. Absolute capacitive sensing is performed with at least one sensor electrode of a plurality of sensor electrodes in a sensor electrode pattern. The at least one sensor electrode is coupled with the at least one of the plurality of routing traces. An offsetting signal is transmitted on a parallel conductor overlapping the at least one…
DITHERING TO AVOID PIXEL VALUE CONVERSION ERRORS
Granted: March 5, 2015
Application Number:
20150062150
Embodiments of the present invention generally provide a method for processing an image. The method includes receiving a plurality of input pixel values associated with a video frame and determining that a first portion of pixel values included in the plurality of input pixel values is within a first set of excluded values. The method further includes dithering the first portion of pixel values to generate a first plurality of dithered values. Each dithered value included in the first…
