Abstract: This application is directed to controlling bandwidths of clock recovery circuit in an electronic device. The electronic device includes a clock recovery circuit and a bandwidth controller coupled to the clock recovery circuit. The clock recovery circuit is configured to receive a data signal carrying a stream of data bits according to a reference clock frequency and recover a clock signal from the data signal. The bandwidth controller is configured to control the clock recovery circuit to start with a pull-in bandwidth, settle at a target bandwidth, and apply an intermediate bandwidth between the pull-in bandwidth and target bandwidth. The intermediate bandwidth is greater than the target bandwidth and less than the pull-in bandwidth. In some implementations, the bandwidth controller controls the clock recovery circuit to apply one or more additional bandwidths to the clock signal after the pull-in bandwidth and the intermediate bandwidth and before the target bandwidth.

Abstract: This application is directed to frequency controlling in an electronic device that includes a selector, a clock generated, and a controller. The selector selects one of a first reference signal and a second reference signal as an input signal having an input phase. The clock generator receives the input signal and generates a periodic signal, and the periodic signal has an output phase that matches the input phase of the input signal. While the first reference signal is selected as the input signal, the controller identifies a temporal range including a peak instant at which the second reference signal reaches a peak frequency, select a switching instant within the temporal range based on a known temporal position of the peak instant with respect to the temporal range, and control the selector to select the second reference signal as the input signal at the switching instant.

Abstract: This application is directed to frequency controlling in an electronic device (e.g., a retimer of a data link). The electronic device includes a selector, a clock generated, and a controller. The selector selects one of a first reference signal and a second reference signal as an input signal having an input phase. The clock generator receives the input signal and generates a periodic signal with reference to the input signal, and the periodic signal has an output phase that matches the input phase of the input signal. While the first reference signal is selected as the input signal, the controller determines whether the second reference signal is in a temporal range in which the second reference signal reaches a peak frequency and controls the selector to select the second reference signal as the input signal in accordance with a determination that the second reference signal is in the temporal range.

Abstract: Controlling Duty Cycle Distortion with a Mixed-Signal Circuit A method controls the duty cycle distortion of clock signals. An electronic device obtains an input clock signal and generates a first output voltage and a second output voltage from the input clock signal. The first output voltage has a first direct current (DC) voltage level indicating, in real time, a first duty cycle length of high voltage duty cycles of the input clock signal. The second output voltage has a second DC voltage level indicating, in real time, a second duty cycle length of low voltage duty cycles of the input clock signal. The difference between the first and second DC voltage levels corresponds to the duty cycle distortion level of the input clock signal. A duty cycle control signal is generated based on the difference between the first and second DC voltage levels to control the high voltage duty cycles of the input clock signal.

Abstract: An electronic device includes a capacitive sense array and is coupled to a stylus including a conductive tip and a conductive wire module. The conductive tip and wire module of the stylus are driven by a tip drive signal and a wire drive signal simultaneously. The tip and wire drive signals have a single stylus drive frequency. While the conductive tip and wire module are driven by the tip and wire drive signals, the electronic device scans the capacitive sense array to obtain a plurality of capacitive sense signals from a plurality of sense electrodes of the capacitive sense array. The electronic device generates a composite image of the capacitive sense array based on the plurality of capacitive sense signals and processes the composite image to determine one or more orientation parameters (e.g., a tilt angle) of the stylus with respect to a surface of the capacitive sense array.

Abstract: This application is directed to a capacitive sense array including a two-dimensional array of capacitive sense elements. Each capacitive sense element is formed by a respective intersection of (i) a respective row electrode in a first electrode layer and (ii) a respective column electrode in a second electrode layer. Each column of the capacitive sense elements includes two or more interdigitated column electrodes. Each row electrode forms two or more rows of capacitive sense elements at intersections with the column electrodes.

Abstract: This application is directed to transferring data over a data link coupled between two electronic devices. The data link includes a retimer having a full data path and a bit level data path that are coupled in parallel. The data link is initiated with the full data path and a first sequence of data packets is transferred via the full data path in accordance with a low data rate setting. While transferring the first sequence of data packets, the first sequence of data packets is manipulated in the full data path to establish a connection of the data link, and in response to establishing the connection of the data link, the data link is switched from the full data path to the bit level data path.

Abstract: An electronic device has a display substrate including a display area, a driver area, and a fan-out area. The fan-out area has interconnects providing electrical accesses to display elements of the display area. The device has a driver chip disposed on the driver area. The driver chip includes a first edge adjacent to the display area and multiple pad groups, each pad group including a respective row of electronic pads that is (i) arranged substantially in parallel with the first edge and (ii) electrically coupled to a respective subset of display elements via respective interconnects routed on a respective region of the fan-out area. The pad groups include a first pad group and a second pad group. The first and second pad groups have two different distances from the first edge and correspond to two different subsets of interconnects routed on two non-overlapping regions of the fan-out area.

Abstract: An electronic device has a display screen and a driver chip disposed on a driver area of the display screen. A fan-out area of the display screen has interconnects configured to provide electrical accesses to display elements of the display area. The driver chip includes a first edge, a second edge, and a row of electronic pads proximate to the first edge. The electronic pads have a first subset of end pads at a first end of the first row, a second subset of end pads at a second opposite end of the first row, and a subset of intermediate pads located between the first subset and second subset of end pads. The first subset of end pads physically contact a first subset of interconnects from the first edge, and the subset of intermediate pads physically contact a second subset of interconnects from the one or more second edges.

Abstract: Touch events are detected on a touch sensing surface coupled to a capacitive sense array and one or more force electrodes. During a plurality of scan cycles, a plurality of capacitive sense signals and one or more force signals are obtained from capacitive sense electrodes of the capacitive sense array and the one or more force electrodes, respectively, and applied to determine a temporal sequence of touches on the touch sensing surface. For each touch of the temporal sequence of touches, a touch location on the touch sensing surface is identified based on the capacitive sense signals, and a force value associated with force applied at the touch location is determined based on the force signals. A gesture associated with the temporal sequence of touches is thereby identified based on the touch locations and the force values of the temporal sequence of touches.

Abstract: This application is directed to detecting touch events on a touch sensing surface coupled to a capacitive sense array and one or more force electrodes. The capacitive sense array includes a plurality of sense electrodes configured to provide a plurality of capacitive sense signals. The force electrodes are configured to provide one or more force signals. A subset of sense electrodes are determined to be associated with a candidate touch based on the capacitive sense signals and their associated baseline values. When force associated with the force signals is below a predetermined force threshold, the candidate touch is determined as an invalid touch (e.g., coverage by a water drop on an area of the touch sensing surface corresponding to the subset of sense electrodes). Baseline values are adjusted for the subset of sense electrodes for determining subsequent touch events associated with the subset of sense electrodes.

Abstract: This application is directed to detecting touch events on a touch sensing surface coupled to a capacitive sense array and one or more force sensors. The capacitive sense array includes a plurality of sense electrodes configured to provide a plurality of capacitive sense signals. The force sensors are configured to provide one or more force signals. In accordance with the plurality of capacitive sense signals, one or more candidate touches are determined on the touch sensing surface, and used to determine an expected force shape. An actual force shape caused on the touch sensing surface by the candidate touches is determined from the one or more force signals. The actual and expected force shapes are compared to determine magnitudes of force associated with each of the one or more touch candidates, thereby determining whether each of the one or more candidate touches is a valid touch.

Abstract: This application is directed to intra-panel communication in a touch display device in which a touch-integrated timing controller (TTCON) is coupled to touch-embedded source drivers (TSDs) via a plurality of forward links and a set of backward links. The forward links include a first subset of display forward links and a second subset of touch forward links. The TSDs are electrically coupled to a display panel including a plurality of display pixels and a plurality of touch sensors. The TTCON sends a display drive signal including display content data and display control data over the display forward links, and sends a touch control signal including an instruction to initiate an operation mode over the touch forward links. Upon receiving the touch control signal, the TSDs identify the instruction to initiate the operation mode, generate touch data accordingly, and return the touch data to the TTCON via the backward links.

Abstract: This application is directed to detecting touch events on a touch sensing surface coupled to a capacitive sense array and one or more force sensors. The capacitive sense array includes a plurality of sense electrodes configured to provide a plurality of capacitive sense signals. The force electrodes are configured to provide one or more force signals. In accordance with the capacitive sense signals, one or more candidate touches are detected on the touch sensing surface, and the detected candidate touches include a first candidate touch. When it is determined that force associated with the one or more force signals is associated with a grip on an edge area of the touch sensing surface, the first candidate touch is associated with the grip on the edge area of the touch sensing surface, and is designated as an invalid touch.

Abstract: This application is directed to controlling display power consumption of a display panel by dynamically adjusting the voltage level of the display power supply. The display panel includes a plurality of display pixels, each driven by the display power supply. Video data corresponds to an image frame to be displayed on the display panel and includes a plurality of multibit data items. Each display pixel is associated with a respective multibit data item defining a magnitude of a drive current of the respective display pixel. A first multibit data item is identified in the video data for a first display pixel to be driven to provide a corner luminance level on the image frame. A corner drive voltage is determined among a plurality of drive voltages of the display pixels based on the first multibit data item and applied to adjust the voltage level of the display power supply.

Abstract: An exemplary touch-sensitive array for optimized edge detection includes a first electrode structure having opposing first and second ends and including: a first transmit (TX) electrode pair at the first end of the first electrode structure, a plurality of core TX electrodes disposed between the first and second ends of the first electrode structure, and a second TX electrode pair at the second end of the first electrode structure. The touch-sensitive array further includes a second electrode structure having opposing first and second ends and including: a first receive (RX) electrode pair at the first end of the second electrode structure and including a first plurality of connection members, a plurality of core RX electrodes disposed between the first and second ends of the second electrode structure, and a second RX electrode pair at the second end of the second electrode structure and including a second plurality of connection members.

Abstract: This application is directed to transferring data over a data link coupled between two electronic devices. The data link includes a retimer having a full data path and a bit level data path that are coupled in parallel. A first sequence of data packets is transferred via the bit level data path of the retimer. While transferring the first sequence of data packets, the data link detects initiation of an equalization procedure based on an initiation data packet in the first sequence of data packets. In accordance with detection of the initiation of the equalization procedure, the data link selects the full data path of the retimer for data transfer over the data link. During the equalization procedure, a second sequence of data packets immediately follows the first sequence of data packets, and is transferred via the full data path of the retimer.

Abstract: This application is directed to transferring data over a data link coupled between two electronic devices. The data link includes a retimer having a full data path and a bit level data path that are coupled in parallel. A first sequence of data packets is transferred via the bit level data path of the retimer. While transferring the first sequence of data packets, the data link detects initiation of an equalization procedure based on an initiation data packet in the first sequence of data packets. In accordance with detection of the initiation of the equalization procedure, the data link selects the full data path of the retimer for data transfer over the data link. During the equalization procedure, a second sequence of data packets immediately follows the first sequence of data packets, and is transferred via the full data path of the retimer.

Abstract: The various implementations described herein include systems, methods and/or devices used to enable false touch detection. An exemplary method is performed at a touch-sensitive device and includes performing a plurality of scans of the touch-sensitive array during a time window, response data is captured from each of the plurality of scans. Distilling a value for each respective scan from the response data captured during the respective scan. Identifying a set of peaks from the distilled values, each peak having a plurality of characteristic values. The method further includes: (i) determining a metric for the peaks based on the plurality of characteristic values associated with each peak; (ii) determining whether the metric satisfies a criterion, and (iii) in response to determining that the metric satisfies the criterion, rejecting at least some of the response data captured during the time window as representing at least one false touch.

Abstract: This application is directed to a display device that integrates a two-dimensional array of display elements and a two-dimensional array of capacitive sense elements. A common electrode layer includes a two-dimensional array of common electrodes, which are used in both display elements and capacitive sense elements. One or more sensing control interconnects and a plurality of driving interconnects are arranged in parallel with each other and on top of a first row of common electrodes. Each sensing control interconnect is configured to provide a touch sensing control signal to enable/disable electrical access to common electrodes in the first row of common electrodes in a touch sensing mode. Each common electrode in the first row is electrically coupled to two or more respective driving interconnects in a display driving mode, while each of the plurality of driving interconnects is electrically coupled to a single respective common electrode.