Synaptics Patent Grants

Semiconductor device and electronic device

Granted: February 14, 2017
Patent Number: 9568976
The semiconductor device has a touch panel controller, a processor and a display driver. The semiconductor device is arranged so as to reduce an electric power uselessly consumed while the action of the display driver is stopped or suspended and further, and an electric power uselessly consumed by the touch-detecting action for recovery of the display driver from the state of the action being stopped or suspended. The processor built in the semiconductor device together with the touch…

Baseline management with large input object detection

Granted: February 14, 2017
Patent Number: 9569029
A method for face detection management includes determining, for a first time, a presence of an input object in a sensing region of a capacitance input device. The presence is determined for the first time using a first baseline, and the input object satisfies a size threshold. The method further includes suppressing a reporting of capacitance input device during a predefined time period based on the presence of the input object, determining a disabled state of a display of a host,…

Fingerprint sensing assemblies and methods of making

Granted: February 14, 2017
Patent Number: 9569654
A sensing module, such as a fingerprint sensing module, is disclosed. The sensing module includes a rigid substrate having a cutout, a flexible substrate attached to the rigid substrate, an image sensor including conductive traces formed on the flexible substrate, and a sensor integrated circuit that is connected to the conductive traces of the image sensor. The sensor integrated circuit is disposed in the cutout of the rigid substrate. The sensor integrated circuit can be fully enclosed…

Semiconductor device

Granted: February 14, 2017
Patent Number: 9570049
The semiconductor device includes: a select circuit which selects, from output signals of tiding generators, timing signals formed by one timing generator; another select circuit which is disposed in a stage after the select circuit, and selects the tiding signals selected by the first select circuit or signals regulated in polarity, and outputs the selected signals outward; and a control register provided for variably setting the polarities of the signals regulated in polarity in units…

Capacitive sensing without a baseline

Granted: February 7, 2017
Patent Number: 9563319
A processing system for a capacitive sensing device, including: a sensor module coupled to multiple sensor electrodes and configured to receive multiple resulting signals from the multiple sensor electrodes, where the multiple electrodes includes a first sensor electrode, a second sensor electrode adjacent to the first second electrode, a third sensor electrode adjacent to the first sensor electrode and the second sensor electrode, and a fourth sensor electrode adjacent to the third…

Capacitive input device interference detection and operation

Granted: February 7, 2017
Patent Number: 9564894
A processing system for a capacitive input device comprises sensor circuitry and control logic. The sensor circuitry is configured to be communicatively coupled with sensor electrodes of the capacitive input device. The control logic is configured to operate the capacitive input device in a first mode comprising interference sensing at a first level and input object sensing. The control logic is also configured to operate the capacitive input device in a second mode instead of in the…

Touch detecting circuit and semiconductor integrated circuit using the same

Granted: January 31, 2017
Patent Number: 9557853
A touch detecting circuit includes a discharging circuit, a detecting circuit, and a calibration circuit that is configured with a calibration capacitor connected to a terminal and a current source which is connected to the terminal and can be controlled so as to be on and off, that can be connected via the terminal to a sensing capacitor which is disposed on a touch panel, is provided. In the beginning, the sensing capacitor is charged to a predetermined voltage by the charging circuit,…

Input device with force sensing and haptic response

Granted: January 31, 2017
Patent Number: 9557857
Devices and methods are provided that facilitate improved input device performance. The devices and methods utilize a first electrode disposed on a first substrate, a second electrode coupled to a first side of a piezoelectric material and a third electrode coupled to a second side of the piezoelectric material. The second electrode and the third electrode are configured to facilitate actuation of the piezoelectric material, while the first electrode and the second electrode define at…

Switchable area enhancement for flexible capacitive sensing

Granted: January 31, 2017
Patent Number: 9557860
Embodiments of the invention generally provide an input device having a plurality of sensor electrodes that can be configured to be scanned in a first direction or a second direction. The input device includes a set of sensor electrodes and first and second sets of buses. The first buses are oriented in a first direction and the second buses are oriented in a second direction. The input device also includes a set of switching elements that are each configured to couple one of the sensor…

Display drive circuit and display device

Granted: January 31, 2017
Patent Number: 9558708
A display drive circuit includes: source amplifiers capable of driving source lines of a display panel connected thereto; preamplifiers capable of outputting first gradation voltages; source circuits each including a division of the source amplifiers, provided that the source amplifiers are divided equally; and resistance arrays. Each source circuit is provided with one of the resistance arrays. Each resistance array divides input first gradation voltages to generate second gradation…

Capacitive sensing using a matrix electrode pattern

Granted: January 24, 2017
Patent Number: 9552089
An electrode matrix that is used for capacitive sensing may be integrated into a display panel of an input device. In one embodiment, source drivers may be mounted on the display panel which drive the display signals and capacitive sensing signals into the display panel. In one embodiment, the capacitive sensing signals may be routed on traces or lines that are interleaved on the same layer as the source lines used for setting a voltage on the pixels in the display panel during display…

Sensor electrode path error diagnosis

Granted: January 24, 2017
Patent Number: 9552121
A processing system for a capacitive sensing input device comprises a sensing module, a first internal diagnostic mechanism, and a determination module. The sensing module is configured to couple with a first sensor electrode path of a plurality of sensor electrode paths, and is configured to drive the first sensor electrode path with a first signal. The first internal diagnostic mechanism is configured to couple with a second sensor electrode path and to acquire a test signal output…

Electronic apparatus and display driver

Granted: January 24, 2017
Patent Number: 9552786
In case that a terminal gradation signal output terminal in a pre-stage display driver and an initial gradation signal output terminal in a next-stage display driver of a plurality of display drivers which are arranged in parallel are used in driving the same gradation signal electrode of a display panel, an output of dummy data from the other gradation signal output terminal which mutually competes with an output timing of a gradation signal from one gradation signal output terminal…

Interference detection using frequency modulation

Granted: January 17, 2017
Patent Number: 9547400
This disclosure generally provides embodiments to reduce the likelihood that an input device fails to detect an interfering signal when performing interference detection using interference bursts that are phase offset from sensor bursts used to perform capacitive sensing. In one embodiment, the input device adjusts the frequency of the interference bursts instead of using interference bursts with the same frequency. Doing so adjusts the phases of the interference bursts relative to each…

Current-mode coarse-baseline-correction

Granted: January 10, 2017
Patent Number: 9541588
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…

Mobile terminal and display panel driver

Granted: January 10, 2017
Patent Number: 9541981
A power circuit section generates a first logic power supply voltage and an analog power supply voltage to supply to a first power supply line and a second power supply line, respectively. A regulator steps the first logic power supply voltage down to generate a second logic power supply voltage and supplies the second logic power supply voltage to a third power supply line. A logic circuit controls A source line driving section and A gate line driving section in response to a decrease…

Capacitive sensing using matrix electrodes driven by routing traces disposed in a source line layer

Granted: January 10, 2017
Patent Number: 9542023
An electrode matrix that is used for capacitive sensing may be integrated into a display panel of an input device. In one embodiment, source drivers may be mounted on the display panel which drive the display signals and capacitive sensing signals into the display panel. In one embodiment, the capacitive sensing signals may be routed on wires or lines that are interleaved on the same layer as the source lines used for setting a voltage on the pixels in the display panel during display…

Signal strength enhancement in a biometric sensor array

Granted: January 10, 2017
Patent Number: 9542589
A biometric imager may comprise a plurality of sensor element traces formed in or on a sensor substrate which may comprise at least a portion of a display screen defining a biometric sensing area and forming in-active pixel locations; an auxiliary active circuit formed in or on the sensor substrate on the periphery of the biometric sensing area and in direct or indirect electrical contact with the sensor element traces; and providing a signal processing interface to a remotely located…

Display control device and data processing system

Granted: January 10, 2017
Patent Number: 9542721
The display control device has a register for holding mode data for giving: a direction about which of a first display mode for performing display control of display data supplied together with a display timing signal from outside, and a second display mode for performing display control of display data written in RAM without accepting supply of a display timing signal from outside to select; and a direction about whether or not to select a scale-up mode for scaling up the display data,…

Keyboards with planar translation mechanism formed from laminated substrates

Granted: January 10, 2017
Patent Number: 9543090
Keyboards with planar translation effecting mechanisms formed by laminated key guides are disclosed. A key assembly for a keyboard includes a keycap having a touch surface for receiving a press force that moves the keycap from an unpressed position toward a pressed position, the unpressed position and pressed position separated in a press direction and a second direction orthogonal to the press direction. A base is included having a laminated key guide contacting a portion of the keycap…