Synaptics Patent Grants

Method and system for dual node sensing

Granted: October 17, 2017
Patent Number: 9791970
A system for a capacitive sensing device includes transmitter electrodes configured to transmit transmitter signals, receiver electrodes configured to receive resulting signals including effects corresponding to the transmitter signals. The system further includes dual nodes corresponding to a first capacitive coupling between the transmitter electrodes and the receiver electrodes, and primary nodes corresponding to a second capacitive coupling between the transmitter electrodes and the…

Multi-sensor touch integrated display driver configuration for capacitive sensing devices

Granted: October 17, 2017
Patent Number: 9791990
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…

Multi-mode capacitive sensor

Granted: October 17, 2017
Patent Number: 9792482
A method and device for providing a multi-modal capacitive sensor, including a plurality of sensor electrodes, in an electronic device is provided. In a first mode, the capacitive sensor is configured to capture an image of a biometric object. In a second mode, the capacitive sensor is configured to provide presence detection functionality. In the second mode, the capacitive sensor includes at least one first electrode and at least one second electrode selected from a plurality of sensor…

Systems and methods for coarse-to-fine ridge-based biometric image alignment

Granted: October 17, 2017
Patent Number: 9792485
Systems and methods for aligning images are disclosed. A method includes: receiving a first skeletonized biometric image; generating a first coarse representation of the first skeletonized biometric image; identifying a set of candidate transformations that align the first skeletonized biometric image to a second skeletonized biometric image based on comparing transformed versions of the first coarse representation to a second coarse representation of the second skeletonized biometric…

System and method for low power input object detection and interaction

Granted: October 10, 2017
Patent Number: 9785217
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…

Force enhanced input device with shielded electrodes

Granted: October 10, 2017
Patent Number: 9785296
An input device includes an input surface and a first substrate mechanically coupled to the input surface. The first substrate includes a first plurality of sensor electrodes configured to detect an input force applied by an input object to the input surface. The input device further includes a conductive material disposed between the input surface and the first plurality of sensor electrodes. The conductive material shields the first plurality of sensor electrodes from effects of the…

Structures and manufacturing methods for glass covered electronic devices

Granted: October 10, 2017
Patent Number: 9785299
The disclosure is directed to electronic device displays which are constructed to withstand damage from an impact resistance test wherein a steel ball of 2 g having a diameter of 8 mm is dropped from a designated height greater than 1 ft, more preferably greater than 2 ft, even more preferably greater than 3 ft, still even more preferably greater than 4 ft, yet even more preferably greater than 5 ft and even more preferably greater than 6 ft. The displays are configured using, for…

Systems and methods for image alignment

Granted: October 10, 2017
Patent Number: 9785818
Systems and methods for image alignment are disclosed. A method includes: determining a first set of patches for a first image and a second set of patches for a second image, wherein each patch in the first and second sets of patches comprises a portion of the first and second image, respectively; determining a set of possible match pairings of a patch from the first set and a patch from the second set; for each match pairing in the set of possible match pairings, computing a…

Systems and methods for biometric image alignment

Granted: October 10, 2017
Patent Number: 9785819
Systems and methods for aligning images are disclosed. A method includes receiving an input image of a biometric object; identifying a plurality of sets of candidate transformations, wherein each set of candidate transformations included in the plurality of sets of candidate transformations aligns the input image to a different enrollment image included in a plurality of enrollment images; grouping the plurality of sets of candidate transformations into a combined set of candidate…

Capacitive sensor architecture for biometric sensing

Granted: October 10, 2017
Patent Number: 9785821
A capacitive sensor a method of making a capacitive sensor are disclosed. The capacitive sensor includes: a plurality of rows of sensor electrodes included in a first layer; a plurality of columns of sensor electrodes included in a second layer, where the plurality of columns of sensor electrodes are arranged orthogonally to the plurality of rows of sensor electrodes to form a two-dimensional sensing array; and, a plurality of conductive elements included in a third layer disposed…

Sensing during non-display update time to avoid interference

Granted: October 10, 2017
Patent Number: 9786254
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…

Modulating a reference voltage to preform capacitive sensing

Granted: October 3, 2017
Patent Number: 9778713
This disclosure generally provides an input device that includes a reference voltage modulator that modulates reference voltage rails when performing capacitive sensing. In one embodiment, reference voltage rails are coupled to a DC power source which provides power to operate a panel that includes a display screen integrated with a touch sensing region. Before performing capacitive sensing, the input device may isolate the DC power source from the reference voltage rails and use the…

Semiconductor device and electronic device

Granted: October 3, 2017
Patent Number: 9778725
The semiconductor device has a touch panel controller, a processor, and a display driver. The display driver has a memory circuit which rewritably stores control data for drive control of a display panel from outside the semiconductor device. The processor controls the touch panel controller based on a command provided from outside the semiconductor device, and accesses control data in the memory circuit for controlling internal parts of the semiconductor device. With the aid of the…

Matrix sensor for image touch sensing

Granted: October 3, 2017
Patent Number: 9778790
Embodiments described herein include an input device, 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, an input device includes a plurality of sensor electrodes arranged in a planar matrix array. Each sensor electrode is coupled to unique routing trace and has an identical geometric plan form that is symmetrical about a center of area of the sensor…

Techniques to determine X-position in gradient sensors

Granted: October 3, 2017
Patent Number: 9778798
Embodiments of the invention generate a voltage gradient across a sensor electrode by driving a negative and positive voltage on respective ends of the electrode to identify a location of an input object. Because both negative and positive voltages are used, one location on the sensor electrode will be at a reference voltage (e.g., system ground). This location is used to divide the sensor electrode into two different regions. Based on measuring a change in charge relative to a baseline,…

Calibrating charge mismatch in a baseline correction circuit

Granted: October 3, 2017
Patent Number: 9778804
Various embodiments provide a processing module that calibrates a current-mode baseline correction system to account for features in an input device that lead to “offset” in output of a charge integrator used for sensing presence of an input object. The offset is a difference between a common mode voltage, which is the average voltage output of the charge integrator over a sensing cycle and a mid-rail voltage midway between high and low power supply voltages. Calibration is performed…

Display device, display panel driver and driving method of display panel

Granted: October 3, 2017
Patent Number: 9779514
A display device includes a display panel including a display region and a driver driving each pixel of the display region in response to input image data. The driver calculates area characterization data indicating feature quantities of an image displayed in each of areas defined in the display region for each of the areas, based on the input image data and generates pixel-specific characterization data associated with each pixel by applying filtering to the area characterization data…

Temperature compensated offset cancellation for high-speed amplifiers

Granted: October 3, 2017
Patent Number: 9780736
An apparatus, system, and method are disclosed for compensating input offset of an amplifier having first and second amplifier output nodes. The method comprises generating a proportional-to-absolute temperature (PTAT) current, generating a complementary-to-absolute temperature (CTAT) current, and selecting, based on the input offset, one of the first and second amplifier output nodes into which a compensation current is to be coupled. The compensation current is based on a selected one…

Successive approximation register analog to digital converter with multiple split digital to analog convertors

Granted: October 3, 2017
Patent Number: 9780804
A digital to analog convertor comprises an output line; first, second and third pluralities of capacitors; and first and second bridge capacitors. The first plurality of capacitors is coupled in parallel with one another, coupled with the output line, and comprises a first least significant bit capacitor of a first capacitance value. The second plurality of capacitors is coupled in parallel with one another, coupled with the output line, and comprises a second capacitor of the first…

Hybrid sensing to reduce latency

Granted: September 26, 2017
Patent Number: 9772725
A processing system comprises a sensor module and a determination module. The sensor module is configured to acquire changes in absolute capacitance from a first plurality of sensor electrodes of a sensor electrode pattern. The sensor module is also configured to utilize the changes in absolute capacitance to determine a drive order in which to drive sensor electrodes of the first plurality of sensor electrodes to acquire changes in transcapacitance between the first plurality of sensor…