Device and method for block compression and block decompression
Granted: March 31, 2020
Patent Number:
10609401
An image compression device includes: a first compression processing circuit configured to generate a first compressed image data by performing a first block compression process on an image data and a dither value generator circuit. When the first compressed image data associated with a compression target block is generated, the dither value generator circuit is configured to generate at least one dither value in response to block coordinates indicating a position of the compression…
Mixer circuit
Granted: March 31, 2020
Patent Number:
10606386
An input device associated with a sensing region is provided. The input device includes: a sensor electrode configured to receive a resulting signal associated with the sensing region; an auxiliary component configured to generate an output based on a differential current; a mixer circuit coupled to the sensor electrode and including: a current conveyor configured to generate a replica of the resulting signal; and a switch array, in series with the replica and the differential current,…
Voice command processing in low power devices
Granted: March 24, 2020
Patent Number:
10601599
An audio processing device comprises audio input circuitry operable to receive audio input signals and to process the audio input signals to generate audio samples at a first rate. The audio processing device further comprises a first trigger engine operable to detect a keyword within the audio samples. Also, the audio processing device comprises a delay buffer operable to continuously receive and store the audio samples. The delay buffer is further operable to transfer the audio samples…
Semiconductor device for distributing a reference voltage
Granted: March 24, 2020
Patent Number:
10599254
In a semiconductor device in which a reference voltage is generated by a reference voltage generation circuit, and the same reference voltage generated is used in a plurality of circuit units for the purpose of generating a voltage, a sampling and holding circuit of the reference voltage is provided in order to provide a standard voltage to the circuit units. A sampling and holding control circuit that controls the sampling and holding circuit instructs the sampling and holding circuit…
Biometric imaging with hover detection
Granted: March 17, 2020
Patent Number:
10592717
A method and system for fingerprint imaging in an electronic device having a display, a touch sensor with a touch interface and an optical fingerprint sensor with a sensing region is described. The method and system include placing the electronic device in a hover detect mode, the hover detect mode scanning for a hovering finger; detecting the hovering finger; initiating illumination in the sensing region to image a fingerprint of the finger; capturing an image of the fingerprint in the…
Two layer forcepad
Granted: March 17, 2020
Patent Number:
10592057
An input device sensor includes proximity receiver electrodes on a first single layer, force receiver electrodes on a second single layer, and transmitter electrodes configured to transmit a transmitter signal. Each transmitter electrode includes proximity transmitter segments linearly arranged on the first single layer and separated by the proximity receiver electrodes. The transmitter electrodes further each include force transmitter segments linearly arranged on the second single…
Display device with an integrated sensing device having multiple gate driver circuits
Granted: March 17, 2020
Patent Number:
10592022
Embodiments described herein include a method, processing system, and input device having a display device with an integrated sensing device. The method comprises selecting, using first gate driver circuitry, a first subset of a first plurality of gate electrodes of the display device for performing display updating during a first period. The method further comprises selecting, using second gate driver circuitry, a first subset of a second plurality of gate electrodes of the display…
Display driver and display panel module
Granted: March 3, 2020
Patent Number:
10580345
Provided is a display driver which can be used in common in any of COF mounting and COG mounting. In the display driver, a position (or write/output position) of display data output by an output circuit can be changed along a direction of an array of external output terminals S1 to S540 according to mode data, whereby an array of external output terminals to use for output can be selected from more than one kind of arrays different in layout pitch. Therefore, the display driver can be…
Managing linear regulator transient voltages upon sleep transitions
Granted: March 3, 2020
Patent Number:
10579083
An electronic system having a linear voltage regulator and method of operating the linear voltage regulator. A linear voltage regulator of an electronic system has at least three ballast devices. The method of operating includes producing a voltage at an output terminal that is electrically coupled to a node of a first one of the three or more ballast devices; receiving a power mode indication; activating a first additional ballast device of the linear voltage regulator to add first…
Phase locked loop sampler and restorer
Granted: February 25, 2020
Patent Number:
10574242
Systems, methods, and apparatus for a circuit for synchronization of a reference signal and an output signal of a phased-lock loop (PLL) are disclosed. The method comprises continuously generating, by a clock detect circuit connected to the PLL, a clock detect signal indicating whether the reference signal of the PLL is present or lost. The method further comprises continuously sampling and storing, by a loop sampler circuit connected to the PLL, a voltage from a loop filter of the PLL,…
Driver IC and electronic apparatus
Granted: February 25, 2020
Patent Number:
10573263
A driver IC is described by which disconnection can be readily prevented from being falsely determined even on condition that an input voltage fed back as a result of output of a detecting voltage by a driver IC is affected by noise on a driven device. The driver IC is arranged so that the latch timing of latching a result of the comparison between an input voltage fed back as a result of a detecting voltage output by the driver IC and the detecting voltage is shift-controlled in each…
Hierarchical gate line driver
Granted: February 25, 2020
Patent Number:
10573214
A hierarchical gate driver circuit for an array of pixel elements. The hierarchical gate driver circuit includes a shift register and two or more groups of gate lines drivers. The shift register is configured to activate a plurality of select lines based at least in part on a periodic clock signal. A first group of gate line drivers is configured to drive a plurality of first gate lines, each coupled to a respective row of first pixel elements in the array, when a first select line of…
Systems and methods for detecting and managing fingerprint sensor artifacts
Granted: February 25, 2020
Patent Number:
10572749
Systems and methods for identifying and managing fixed sensor artifacts, such as scratches and non-operational sensor pixels, in a biometric sensor. A plurality of images acquired by the biometric sensor in response to detection of a biometric object proximal to a sensing surface of the biometric sensor are processed to determine a pixel value for each pixel location in each image. One or more specific pixel locations having substantially the same pixel value in the plurality of images…
Transparent fingerprint sensor pattern
Granted: February 25, 2020
Patent Number:
10572707
A transparent sensor pattern suitable for sensing fingerprint information in a display area is disclosed. The sensor pattern includes a receiver electrode extending in a first direction and a transmitter electrode extending in a second direction different from the first direction. The receiver electrode includes a conductive trace made from an opaque metal material and the receiver electrode is substantially free of transparent conductive material. The transmitter electrode includes a…
Force sensing using sensor electrodes of different materials
Granted: February 25, 2020
Patent Number:
10572081
A method and associated processing system and input device are disclosed, the method comprising acquiring capacitive measurements using individual electrodes of a plurality of first sensor electrodes and a plurality of second sensor electrodes. The first sensor electrodes are formed of a first material having a positive gauge factor, and the second sensor electrodes are formed of a second material having a negative gauge factor. The method further comprises selectively forming one or…
Input sensing using code division multiplexing (CDM)
Granted: February 25, 2020
Patent Number:
10572067
Sensing systems and methods that utilize lower-order zero row sum code division multiplexing (CDM) drive matrices to reduce or eliminate radiative emissions. Measurements corresponding to an input received at a sensing region of the input device are obtained by separately driving multiple subsets of transmitters of the input device, and obtaining measurement values corresponding to each separately-driven subset of transmitters via the receivers, wherein a plurality of measurement…
Automotive acceleration compensation force sensing
Granted: February 25, 2020
Patent Number:
10572065
Automotive acceleration compensation force sensing includes determining a total force value from the measurements from force sensors, obtaining, from an accelerometer, an environmental acceleration value, and calculating an input object force value on an input surface using a total force value and the environmental acceleration value. Automotive acceleration compensation force sensing further includes reporting the input object force value.
Method and system for measuring a phase baseline estimate of an input device
Granted: February 25, 2020
Patent Number:
10572048
An input device may include various sensor electrodes that define various sensor pixels. The input device may further include a processing system coupled to the sensor electrodes. The processing system may obtain a first resulting signal and a second resulting signal from the sensor electrodes. The processing system may determine, using the first resulting signal, an in-phase estimate of a phase delay at a sensor pixel among the sensor pixels. The processing system may determine, using…
Method and apparatus for improved input sensing using a display processor reference signal
Granted: February 18, 2020
Patent Number:
10564775
Embodiments of the invention generally provide a method and apparatus that is configured to reduce the effects of interference that is undesirably provided to a transmitter signal that is delivered from a transmitter signal generating device to a sensor processor to determine if an input object is disposed within a touch sensing region of a touch sensing device. In one embodiment, the sensor processor includes a receiver channel that has circuitry that is configured to separately receive…
Optimized scan sequence for biometric sensor
Granted: February 11, 2020
Patent Number:
10558838
Disclosed are systems and method for imaging an input object. An imaging device includes: a light source that emanates light to a sensing region in which the input object to be imaged is placed; a collimator filter layer; an image sensor array disposed below the collimator filter layer that blocks some light reflected from the input object while other light passes through apertures in the collimator filter layer and arrives at the image sensor array; and a controller configured to cause…
