Abstract: A depth sensing system and a depth sensing method are provided. The sensing system includes depth sensing module and a processor for performing the sensing method. The depth sensing method incudes: obtaining a sensed target data set via a depth sensing module; calculating a period number corresponding to a measuring pixel; and calculating an actual range value or an actual depth of the measuring pixel in accordance with a period number and a range value of the measuring pixel. The step of calculating the period number of the target data set includes: calculating a spatial ratio in accordance with the position values of the pixel of optical center and measuring pixel, and a focal length of the depth sensing module; calculating a basic range in accordance with the spatial ratio and an unit depth; and calculating the period number corresponding to the measuring pixel.

Abstract: The device includes a projecting device, an image sensor and a computing circuit. The projecting device provides a light beam having a predetermined pattern that is projected onto an object. The image sensor receives the light beam reflected from the object to generate an image. The computing circuit compares the image with a first ground-truth image and a ground-truth image to generate a first depth value and a second depth value respectively. The first and second depth values are combined to generate a depth result.

Abstract: A method of motion adaptive spatial smoothing includes determining a difference of a block duty of a selected block of a current frame and a block duty of the selected block of a previous frame, generating an original smoothing matrix for the selected block, generating a motion adaptive matrix according to the original smoothing matrix and a difference of the block duty of the selected block of the current frame and the block duty of the selected block of the previous frame, updating a block duty for each block with a corresponding motion adaptive matrix to generate an updated frame, and performing spatial smoothing for the updated frame.

Abstract: A circuit, for a touch panel, comprises a plurality of touch signal processing circuits, coupled to a plurality of sensors of the touch panel to receive a plurality of touch signals, wherein when a first sensor within the plurality of sensors is touched, the first sensor generates a first touch signal of the plurality of touch signals; and a controller, coupled to the plurality of touch signal processing circuits, configured to adjust the first touch signal according to the plurality of touch signals except the first touch signal.

Abstract: A circuit, for a touch panel, comprising N touch signal processing circuits; a backup processing circuit; and a controller, coupled to the N touch signal processing circuits and the backup processing circuit, configured to determine whether one of the N touch signal processing circuits is failed and generate a determining result, and control the N touch signal processing circuits and the backup processing circuit to process N touch signals received from the touch panel to obtain N digital signals according to the determining result.

Abstract: A display driving system, configured to control a scan operation of a display, comprising: a scan control circuit, configured to receive a start position signal and to generate a switch selecting signal according to the scan start position signal; and a scan switch circuit, coupled to the display and the scan control circuit, and comprising a plurality of switches, configured to turn on one of the switches according to the switch selecting signal, to control the display to start the scan operation at a scan start position; wherein the display comprises N scan lines, wherein the scan start position is one of the scan lines.

Abstract: A structured-light three-dimensional (3D) scanning system includes a projector that emits a projected light with a predetermined pattern onto an object; an image capture device that generates a captured image according to a reflected light reflected from the object, the predetermined pattern of the projected light being distorted due to 3D shape of the object, thereby resulting in a distorted pattern; a depth decoder that converts the distorted pattern into a depth map representing the 3D shape of the object; and a depth fusion device that generates a fused depth map according to at least two different depth maps associated with the object.

Abstract: A three-dimensional structure sensing system includes an image sensor that receives a reflected light from an object irradiated by an emitted light, the reflected light being converted into image data representing an image of the object; and a depth processing unit that generates depth data according to the image data. It is determined whether the depth data is affected by a reflective surface according to the image data and the depth data.

Abstract: A touch event processing circuit includes receiving circuits and an average circuit. Each of the receiving circuits includes an operation amplifier, a current processing circuit, and a touch event detection circuit. The operation amplifier receives an input signal from a touch panel, and outputs a first current signal and a second current signal. The current processing circuit processes the first current signal and the second current signal according to a first current average signal and a second current average signal, to generate a processed current signal. The touch event detection circuit detects a touch event according to the processed current signal. The average circuit receives first current signals and second current signals from the receiving circuits; performs an average operation upon the first current signals, to generate the first current average signal; and performs an average operation upon the second current signals, to generate the second current average signal.

Abstract: A luminance control circuit and a luminance control method are provided. The luminance control circuit includes a first converter, average pixel level (APL) calculator, a luminance adjusting circuit and a second converter. The first converter converts a gray level result of an image data into at least one luminance. The APL calculator generates an APL value according to the at least one luminance. The luminance adjusting circuit generates at least one adjusting value according to the APL value and adjust the at least one luminance to be at least one adjusted luminance using the least one adjusting value. The second converter converts the at least one adjusted luminance into an adjusted gray level result of the image data. The adjusted gray level result is negative correlated with the APL value.

Abstract: A method of performing power saving control on a display device includes: generating, by a timing controller of the display device, a power saving start indication and a power saving end indication in response to changing of a refresh rate of the display device; receiving, by a source driver of the display device, the power saving start indication and the power saving end indication; in response to the power saving start indication, allowing a part of circuitry of the source driver to be powered down during a vertical blanking interval; and in response to the power saving end indication, allowing the powered down part of circuitry of the source driver to be woken up during the vertical blanking interval.

Abstract: A method of performing power saving control on a display device includes: generating, by a timing controller of the display device, a power saving start indication and a power saving end indication in response to changing of a refresh rate of the display device; receiving, by a source driver of the display device, the power saving start indication and the power saving end indication; in response to the power saving start indication, allowing a part of circuitry of the source driver to be powered down during a vertical blanking interval; and in response to the power saving end indication, allowing the powered down part of circuitry of the source driver to be woken up during the vertical blanking interval.

Abstract: An acoustic feature extraction (AFE) circuit includes a plurality of band-pass filters (BPFs) adaptable to a plurality of channels with different band-pass frequency ranges respectively for switchably receiving an amplified signal, thereby generating corresponding filtered signals, the plurality of BPFs including an operational amplifier that is shared among the plurality of channels; and a rectifier switchably coupled to receive the filtered signals, thereby generating a rectified signal. The amplified signal is time-division demultiplexed onto the BPFs in different phases, and the filtered signals are time-division multiplexed onto the rectifier in different phases.

Abstract: The fingerprint sensing circuit includes a photo detector, a capacitor, a current mirror and a switch circuit. The capacitor has a first terminal electrically connected to the first terminal of the photo detector. The current mirror has an input terminal electrically connected to the first terminal of the photo detector and an output terminal electrically connected to a sensing line. In an exposure period, the switch circuit turns off the current mirror. In a sensing period, the switch circuit turns on the current mirror to generate a current on the sensing line, and the detecting circuit is configured to generate a fingerprint signal according to the current.

Abstract: The invention provides a power system for monitoring a working environment of a monitored circuit and adjusting a working voltage of the monitored circuit includes: a power circuit, a voltage-controlled oscillator and a counter. The power circuit is configured to output the working voltage to the monitored circuit through a power supply path. The voltage-controlled oscillator is disposed in or around the monitored circuit and is electrically connected to the power supply path and a ground path to which the monitored circuit is electrically connected, and is configured to output an oscillation frequency in accordance with a signal variation on the power supply path and the ground path. The counter is electrically connected to the voltage-controlled oscillator and is configured to generate a counting number signal in accordance with the oscillation frequency and a synchronizing signal, thereby adjusting the working voltage outputted to the monitored circuit.

Abstract: A 3D location reporting method includes capturing a plurality of 2D image frames having a sensor frame rate and a plurality of 3D depth image frames having the sensor frame rate, wherein the plurality of 2D image frames and the plurality of 3D depth image frames are interleaved, and a first 2D image frame of the plurality of 2D image frames is captured earlier than a first 3D depth image frame of the plurality of 3D depth image frames; calculating a first 3D location according to an N-th 2D image frame of the plurality of 2D image frames and an N-th 3D depth image frame of the plurality of 3D depth image frames; and calculating a second 3D location according to the N-th 3D depth image frame and an (N+1)-th 2D image frame of the plurality of 2D image frames.

Abstract: A current sensing calibration method includes setting a first calibration current, inputting the first calibration current to a current sensing circuit for detecting a first real digital code, acquiring offset calibration data according to the first real digital code and a first ideal digital code corresponding to the first calibration current, setting a second calibration current and a third calibration current, inputting the second calibration current to the current sensing circuit for detecting a second real digital code, inputting the third calibration current to the current sensing circuit for detecting a third real digital code, acquiring gain calibration data according to the second real digital code, the third real digital code, a second ideal digital code, and a third ideal digital code, and acquiring channel temperature calibration data after the current sensing circuit is calibrated according to the offset calibration data and the gain calibration data.

Abstract: A clock data recovery circuit is provided. The clock data recovery circuit includes a charge pump circuit, a voltage controlled delay line circuit, a charge pump current generator, a phase-frequency detector and a frequency detector. The charge pump circuit generates a control voltage according to a first control signal, a second control signal and a charge pump current. The voltage controlled delay line circuit generates a data clock signal according to the control voltage and a reference clock signal. The charge pump current generator generates the charge pump current to the charge pump circuit according to the control voltage. The phase-frequency detector generates the first control signal according to a feedback clock signal and the reference clock signal. The frequency detector generates the second control signal according to the feedback clock signal and the reference clock signal.

Abstract: A timing controller circuit is arranged to control at least a gate in panel (GIP) circuit in a display panel, and includes a data receiving circuit, a timing detection circuit, a control circuit, and a data transmitting circuit, wherein the data receiving circuit is arranged to receive an image data, the timing detection circuit is coupled to the data receiving circuit, and is arranged to detect an input timing of the image data, the control circuit is coupled to the timing detection circuit, and is arranged to determine a GIP timing of the GIP circuit according to the input timing of the image data, and generate a timing control output according to the GIP timing, and the data transmitting circuit is coupled to the control circuit, and is arranged to transmit the timing control output to the GIP circuit.

Abstract: A touch detection system includes a stylus, a panel and a processing circuit. The panel can include a plurality of sensing cells used to receive a first signal and a second signal generated by a touch event. The processing circuit can be coupled to the panel and used to determine a plurality of first areas and a plurality of first intensities corresponding to the first signal, determine a plurality of second areas and a plurality of second intensities corresponding to a second signal, and determine whether the touch event is triggered by the stylus touching the panel according to the first intensities, first areas, the second intensities and the second areas.