Synaptics Patent Grants

Reduction in latency between user input and visual feedback

Granted: July 11, 2017
Patent Number: 9703411
A system comprising a display screen configured for displaying images, a touch sensor having a sensing region, a host processing system and a touch screen control system. The touch screen control system comprising touch sensor control circuitry configured to operate the touch sensor and display control circuitry configured to operate the display screen. The display circuitry comprising a first memory configured to hold a primary image and a second memory configured to hold a secondary…

Driving sensor electrodes for proximity sensing

Granted: July 11, 2017
Patent Number: 9703430
In an example, a processing system includes: a sensor module comprising sensor circuitry, the sensor module configured to: drive, during a first time period, a first sensor electrode of a first plurality of sensor electrodes for absolute capacitive sensing, a second sensor electrode of the first plurality of sensor electrodes with a reference signal, and at least one sensor electrode of a second plurality of sensor electrodes with a guard signal, to acquire first changes of capacitance…

Noise detection and mitigation for capacitive sensing devices

Granted: July 11, 2017
Patent Number: 9703431
Techniques, including a method, for detecting an input object. The method includes driving sensing signals onto and receiving resulting signals with a first plurality of sensor electrodes and a second plurality of sensor electrodes to determine first changes of capacitance between the first plurality of sensor electrodes and an input object and the second plurality of sensor electrodes and the input object. The method also includes driving the first plurality of sensor electrodes with…

Hybrid large dynamic range capacitance sensing

Granted: July 11, 2017
Patent Number: 9703436
A processing system that includes a charge integrator, a compensation unit, and a fine signal processing unit. The compensation unit detects when the output of the charge integrator is outside of a certain range related to the dynamic range of the charge integrator and adds or subtract charge from an input of the charge integrator in response. The compensation unit records a count of the number of times that charge is added or subtracted and produces a coarse sensing result from this…

Driver IC for display panel

Granted: July 11, 2017
Patent Number: 9704450
For each display line cycle, inputs to a pair of differential input terminals of a driving circuit are alternately switched in a cycle shorter than the display line cycle between a gradation voltage and a reference voltage. According to this, a chopping operation of switching polarities of offset appearing at the output of the driving circuit within one display line is performed for a plurality of times, and accordingly, a pixel of each display line maintains brightness information in…

Display device having an integrated sensing device with improved proximity sensing

Granted: July 4, 2017
Patent Number: 9696858
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,…

Methods and systems for detecting a position-based attribute of an object using digital codes

Granted: July 4, 2017
Patent Number: 9696863
Methods, systems and devices are described for detecting a position-based attribute of a finger, stylus or other object with a touchpad or other sensor having a touch-sensitive region that includes a plurality of electrodes. Modulation signals for one or more electrodes are produced as a function of any number of distinct digital codes. The modulation signals are applied to an associated at least one of the plurality of electrodes to obtain a resultant signal that is electrically…

Biometric object sensor and method

Granted: July 4, 2017
Patent Number: 9697411
A biometric image sensor system and method is disclosed which may comprise a first light source having a first wavelength ?1, a second light source having a second wavelength ?2, a photodetector configured and positioned to receive light of the first wavelength ?1 and light of the second wavelength ?2 reflecting from a biometric object being imaged and to produce a first output indicative of the amount of reflectance of the light of the first wavelength ?1 and a second output indicative…

System and method for detecting an active pen with a matrix sensor

Granted: June 27, 2017
Patent Number: 9690397
A processing system, input device, and method are disclosed to detect an active input device. The method includes operating a first portion of a plurality of sensor electrodes to receive an active input signal from an active input device, and operating a second portion of the plurality of sensor electrodes to receive capacitive sensing data corresponding to a passive input device. The first and second portions include at least one sensor electrode in common. The method also includes…

System and method for determining input object information from proximity and force measurements

Granted: June 27, 2017
Patent Number: 9690438
A processing system for an input device having a sensing region overlapping an input surface and an array of sensor electrodes configured to form a plurality of proximity pixels and a plurality of force pixels. The processing system is configured to: determine a proximity image indicative of positional information for input objects; determine a force image indicative of local deflection of the input surface in response to force applied by the input objects; determine a respective group…

Image processing apparatus, image processing method, display panel driver and display apparatus

Granted: June 27, 2017
Patent Number: 9691347
An image processing apparatus includes a reference value calculating section configured to generate a value that is a weighted average of values of R data, G data, and B data of original RGB data as a reference value. Regarding each of color data such as the R data, the G data, and the B data, a value is calculated that is coincident with a value obtained by adding the value of the color data of the original RGB data to a product of a difference obtained by subtracting the reference…

Differential amplifier circuit and display drive circuit

Granted: June 27, 2017
Patent Number: 9692374
A differential amplifier circuit and display drive circuit having the same are disclosed herein. In one example, a differential amplifier circuit includes a differential pair transistor configure to receive a differential input signal. A current source is connected in series to the differential pair transistor and an output transistor that drives an output terminal on the basis of the differential input signal. The output transistor is configured to increase a current value of a current…

Multi-monitor display system

Granted: June 20, 2017
Patent Number: 9684482
A multi-monitor display is disclosed. A multi-monitor display receives video data configured for a single N×M video display; splits the video data into a plurality of portions spanning the N×M display; and transmits the plurality of portions to a corresponding plurality of displays. The multi-monitor display system can be any system, for example a display-port system or an ePaper system.

Touch and display device having an integrated sensor controller

Granted: June 13, 2017
Patent Number: 9678586
Embodiments of the invention generally provide an input device having a smaller overall physical size and a lower production cost, and is minimally affected by electrical interference versus conventional input devices. Embodiments discussed herein include an input device that has a sensor controller disposed in close proximity to a plurality of sensing elements that are used to sense and acquire positional information of an input object. In one embodiment, the sensor controller and at…

Acquiring multiple capacitive partial profiles for interleaved capacitive sensing

Granted: June 13, 2017
Patent Number: 9678599
Embodiments include a method, input device, and processing system for operating a plurality of sensor electrodes for capacitive sensing. The method includes acquiring a first capacitive partial profile by driving a first capacitive sensing signal onto a first sensor electrode of a first plurality of sensor electrodes while driving a second sensor electrode of the first plurality of sensor electrodes with a substantially constant voltage. The method further includes acquiring a second…

Systems and methods for switching sensing regimes for gloved and ungloved user input

Granted: June 13, 2017
Patent Number: 9678605
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…

Input device with force sensing

Granted: June 6, 2017
Patent Number: 9671898
Devices and methods are provided that facilitate improved input device performance. The devices and methods utilize a first substrate with proximity sensor electrodes and at least a first force sensor electrode disposed on the first substrate. A second substrate is physically coupled to the first substrate, where the second substrate comprises a spring feature and an electrode component. The electrode component at least partially overlaps the first force sensor electrode to define a…

Avoidance of bending effects in a touch sensor device

Granted: June 6, 2017
Patent Number: 9671915
Disclosed herein include an input device, processing system and methods for touch sensing. Implementations advantageously are resistive to diminished performance when a film stack of an input device is bent in response to an input (touch) event. In one implementation, an input device is provided that includes a housing, a plurality of sensor electrodes disposed in a pattern on a substrate, a plurality of routing traces coupled to the sensor electrodes, an electrically conductive shield…

System and methods for determining object information using selectively floated electrodes

Granted: May 30, 2017
Patent Number: 9665214
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…

Tiered wakeup strategy

Granted: May 30, 2017
Patent Number: 9665762
A biometric authentication apparatus and method is disclosed which may comprise a biometric authentication unit which may comprise: a biometric object sensor comprising sensor elements and a sensor computing device; a wake-on-event logic controller maintaining the sensor computing device in one of a powered-off or powered down mode, and including a bulk biometric object detector configured to detect a biometric object on or in the vicinity of the sensor elements and to power-on or…