VOLTAGE INTERPOLATING CIRCUIT
Granted: January 2, 2014
Application Number:
20140002433
A display driver maps a selection code (a digital signal) to a reference voltage which is then used to produce a particular intensity of the radiation emitted from a pixel on a display screen (e.g., a LCD display). This mapping may be performed by one or more DACs in the display driver. However, instead of transmitting all of the different possible reference voltages to the DACs, only a subset of the reference voltages are transmitted. Each DAC may include an interpolator circuit that…
FULLY ADDRESSABLE TRANSMITTER ELECTRODE CONTROL
Granted: January 2, 2014
Application Number:
20140002410
Circuit architecture is provided to allow for flexible touch transmit signaling of a display device having an integrated capacitive sensing device. The circuit architecture includes an addressable selection module for non-sequentially selecting a plurality of transmitter electrodes to be driven for capacitive sensing. The circuit architecture supports a high voltage drive scheme that provides voltage sources for capacitive sensing and for updating the display device. The circuit…
SYSTEMS AND METHODS FOR SWITCHING SENSING REGIMES FOR GLOVED AND UNGLOVED USER INPUT
Granted: January 2, 2014
Application Number:
20140002340
The various embodiments described herein provide input devices configured to selectively operate in two different sensing regimes. The first sensing regime is configured to determine positional information for ungloved fingers in the sensing region. The second sensing regime is configured to determine positional information for gloved fingers in the sensing region. The input devices are further configured to switch from operating in the first sensing regime to the second sensing regime…
SYSTEMS AND METHODS FOR DETERMINING TYPES OF USER INPUT
Granted: January 2, 2014
Application Number:
20140002114
The embodiments described herein thus provide devices and methods that facilitate improved input devices. Specifically, the devices, systems and methods provide the ability to accurately determine user input using multiple different sensing regimes. The different sensing regimes can be used to facilitate accurate position determination of objects both at the surface and away from the surface. For example, the different sensing regimes can be used to determine position information for…
SYSTEMS AND METHODS FOR REDUCING EFFECTS OF INTERFERENCE IN INPUT DEVICES
Granted: December 26, 2013
Application Number:
20130346008
The embodiments described herein provide devices and methods that facilitate improved input device performance. Specifically, the devices and methods provide improved resistance to the effect of interference on input devices, and in particular, to the effect of unison noise on proximity sensors that use capacitive techniques to generate images of sensor values. The devices and methods provide improved resistance to the effects of interface by using multiple images of sensor values, where…
SYSTEMS AND METHODS FOR SENSOR DEVICES HAVING A NON-COMMENSURATE NUMBER OF TRANSMITTER ELECTRODES
Granted: December 19, 2013
Application Number:
20130335252
A processing system for an input device includes a transmitter modules coupled to a plurality of transmitter electrodes including a first set and a second set of transmitter electrodes, the first set and second set being disjoint and having different sizes. The transmitter module is configured to simultaneously transmit a first plurality of transmitter signals with the first set of transmitter electrodes during a first period, and to simultaneously transmit a second plurality of…
SYSTEM AND METHOD FOR GRADIENT IMAGING SENSORS
Granted: December 12, 2013
Application Number:
20130328821
A processing system for an input device includes a transmitter module, a receiver module, and a determination module. The transmitter module, which includes transmitter circuitry, is coupled to a plurality of transmitter electrodes and configured to drive a first end of a first transmitter electrode of the plurality of transmitter electrodes to produce a first voltage gradient across the first transmitter electrode. The receiver module is configured to receive a plurality of resulting…
TWO LAYER CAPACITIVE SENSOR
Granted: October 17, 2013
Application Number:
20130270095
The embodiments described herein provide improved sensor devices and methods that facilitate improved sensor devices. Specifically, the devices and methods provide capacitive image sensors that require only two layers of conductive elements formed on a single substrate. The ability to provide an image sensor using only a single substrate with two layers of conductive elements may substantially reduce the cost and complexity of the capacitive image sensor. In one embodiment, an input…
REDUCING BENDING EFFECTS IN TOUCH SENSOR DEVICES
Granted: October 17, 2013
Application Number:
20130271161
A capacitive image sensor for detecting an input object includes a first substrate and a second substrate. A compressible region is defined between the first substrate and the second substrate. The first substrate is deflectable towards the second substrate. A transmitter electrode, receiver electrode, and bending effect electrode are disposed on the first substrate. The bending effect electrode is disposed between the transmitter electrode and receiver electrode and is configured to…
REDUCING BENDING EFFECTS IN TOUCH SENSOR DEVICES
Granted: October 17, 2013
Application Number:
20130271160
A capacitive image sensor for detecting an input object includes a first substrate and a second substrate. A compressible region is defined between the first substrate and the second substrate. The first substrate is deflectable towards the second substrate. A transmitter electrode, receiver electrode, and bending effect electrode are disposed on the first substrate. The bending effect electrode is disposed between the transmitter electrode and receiver electrode and is configured to…
SYSTEMS AND METHODS FOR DETERMINING USER INPUT USING POSITION INFORMATION AND FORCE SENSING
Granted: October 3, 2013
Application Number:
20130257792
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…
SYSTEM AND METHODS FOR DETERMINING OBJECT INFORMATION USING SELECTIVELY FLOATED ELECTRODES
Granted: October 3, 2013
Application Number:
20130257784
The embodiments described herein provide devices and methods that facilitate improved sensor devices. In one embodiment, a capacitive input device is provided that includes a processing system, a plurality of sensing electrodes configured to sense objects in a sensing region, a conductor, and a shield layer comprising at least one shield electrode, where the at least one shield electrode is disposed between the plurality of sensing electrodes and the conductor. The processing system is…
SYSTEMS AND METHODS FOR DYNAMICALLY MODULATING A USER INTERFACE PARAMETER USING AN INPUT DEVICE
Granted: October 3, 2013
Application Number:
20130257769
The embodiments described herein provide devices and methods that facilitate improved input device performance. Specifically, the devices and methods provide an input device configured to determine positional and force information for input objects interacting with a sensing region. The system is configured to detect a variable force imparted to an input surface of the sensing region by at least one input object. The variable force dynamically modulates, within a modulation range, a user…
SYSTEM AND METHOD FOR REDUCING TRANSMITTER POWER CONSUMPTION
Granted: October 3, 2013
Application Number:
20130257745
Embodiments of the invention generally provide a method and system that is able to reduce the power consumption needed to drive sensor electrodes included within an input device. The power consumption of the input device is reduced by providing an intermediate electronic storage device that partially drives a sensor electrode before a driver module drives the sensor electrode the remaining amount to the second voltage potential.
SYSTEM AND METHOD FOR SENSING MULTIPLE INPUT OBJECTS WITH GRADIENT SENSOR DEVICES
Granted: September 26, 2013
Application Number:
20130253863
A processing system for an input device includes a transmitter module including transmitter circuitry, a receiver module, and a determination module. The transmitter module is configured to drive the transmitter electrode with a first drive signal to produce a first voltage gradient across the transmitter electrode, wherein the first voltage gradient is non-linear. The receiver module is configured to receive a first resulting signal with a receiver electrode, the resulting signal…
SYSTEM AND METHOD FOR DETERMINING RESISTANCE IN AN INPUT DEVICE
Granted: September 26, 2013
Application Number:
20130249850
A processing system for an input device includes a transmitter module, a receiver module, and a determination module. The transmitter module includes transmitter circuitry and is configured to apply a first differential drive signal across a transmitter electrode to produce a first voltage variation across the transmitter electrode. The receiver module is configured to receive a first resulting signal with a receiver electrode when the first voltage variation is produced across the…
NOISE-ADAPTING TOUCH SENSING WINDOW
Granted: August 1, 2013
Application Number:
20130194229
Embodiments of the invention generally provide an input device with display screens that periodically update (refresh) the screen by selectively driving electrodes corresponding to pixels in a display line, while also using the display screen as a touch area for capacitive sensing. To do this, the input device uses common electrodes for both updating the display and performing capacitive sensing, and interleaves periods of capacitive sensing between periods of updating the display lines…
SINGLE LAYER CAPACITIVE IMAGING SENSORS
Granted: July 18, 2013
Application Number:
20130181943
Embodiments of the invention generally provide an input device that includes a plurality of sensing elements that are interconnected in desired way to acquire positional information of an input object, so that the acquired positional information can be used by other system components to control a display or other useful system components. One or more of the embodiments described herein, utilizes one or more of the techniques and sensor electrode array configuration disclosed herein to…
SINGLE LAYER CAPACITIVE IMAGING SENSORS
Granted: July 18, 2013
Application Number:
20130181942
Embodiments of the invention generally provide an input device that includes a plurality of sensing elements that are interconnected in desired way to acquire positional information of an input object, so that the acquired positional information can be used by other system components to control a display or other useful system components. One or more of the embodiments described herein, utilizes one or more of the techniques and sensor electrode array configuration disclosed herein to…
VIRTUAL GEOMETRIES FOR INTEGRATED DISPLAY AND SENSING DEVICES
Granted: July 11, 2013
Application Number:
20130176276
Embodiments of the present invention generally provide a processing system for a display device integrated with a capacitive sensing device. The processing system includes a driver module including driving circuitry. The driver module is coupled to a plurality of common electrodes configured to be driven for display updating and capacitive sensing. A first transmitter electrode includes a first set of common electrodes of the plurality of common electrodes. A second transmitter electrode…
