Abstract: A driver circuit suitable driving a display panel is provided. The driver circuit includes a display driver circuit and a touch driver circuit. The display driver circuit drives the display panel to be operated in a first mode or a second mode. In the first mode, different areas of the display panel have different frame rates. In the second mode, different areas of the display panel have a same frame rate. The touch driver circuit is coupled to the display driver circuit. The touch driver circuit detects a touch event. When the touch driver circuit detects the touch event, the display driver circuit drives the display panel to be switched from the first mode to the second mode.

Abstract: The touch device includes a processor and a driving circuit. The processor performs an active object detection through the driving circuit to detect a first position of an active stylus on a touch panel. The processor performs a passive object detection through the driving circuit to detect a second position of a passive object on the touch panel. The processor defines a first detection range including the first position. The processor defines a second detection range on the touch panel based on the first detection range, in which the first detection range is mutually exclusive from the second detection range. Then, the processor performs the active object detection in the first detection range through the driving circuit, and the processor disables or ignores the active object detection in the second detection range.

Abstract: A driving system includes a plurality of driver circuits connected in series, wherein each of the plurality of driver circuits is connected to one or two adjacent driver circuits through a master terminal and a slave terminal. The plurality of driver circuits include a first driver circuit and a second driver circuit. The first driver circuit outputs a first synchronization signal through the master terminal. The second driver circuit outputs a second synchronization signal through the slave terminal when receiving the first synchronization signal through the master terminal. A compensation time corresponding to the second driver circuit is calculated according to an output time point of the first synchronization signal and a reception time point of the second synchronization signal.

Abstract: A touch detection method for generating a report includes obtaining a position of a touch point; determining a plurality of reference sensor pads according to the position of the touch point; determining a weight for each of the plurality of reference sensor pads according to the position of the touch point; evaluating a first evaluated peak value of the touch point based on sensing values of the plurality of reference sensor pads and the corresponding weights; and determining whether to generate the report for the touch point according to the first evaluated peak value and a first threshold.

Abstract: A touch and display driving circuit applicable to driving at least one sensing pad of a touch and display panel and its operation method thereof are provided. The touch and display driving circuit includes a source driver circuit and a touch circuit having an analog front-end circuit, being electrically coupled to the sensing pad of the touch and display panel. The source driver circuit is operable and connected with a first operational voltage and a second operational voltage. The analog front-end circuit is operable and connected with a third operational voltage and a fourth operational voltage. The first operational voltage and the second operational voltage of the source driver circuit are different from the third operational voltage and the fourth operational voltage of the analog front-end circuit. By employing the disclosed technical contents, the invention is effective in reducing power consumption and redundant power waste.

Abstract: An operation method of a power supply circuit which is provided with an input voltage to generate a positive output voltage and a negative output voltage is proposed. The power supply circuit includes five switches and is electrically connected with an inductor through a first inductor node and a second inductor node. The disclosed operation method includes determining the power supply circuit to operate in a mode, which includes three operation phases, a first, second and third phase. Energizing currents can be generated and provided both to enhance the positive output voltage and negative output voltage by employing the proposed operation method. Since there is no transition of the voltage level of the second inductor node during the second phase to third phase transition, it is believed that the present invention effectively achieves in suppressing redundant power switching loss and providing optimized output power efficiency.

Abstract: A method for controlling a plurality of types of styluses includes steps of: outputting a first uplink signal corresponding to a first type of stylus among the plurality of types of styluses, to detect the first type of stylus; and outputting a second uplink signal corresponding to a second type of stylus among the plurality of types of styluses, to detect the second type of stylus. The second type is different from the first type.

Abstract: A processor is disposed in a display device and is configured to perform following operations: calculating a total coupling coefficient for a (N?1)th frame according to input data, in which N is a positive integer greater than 1; calculating a coupling coefficient difference value of two adjacent lines for a Nth frame according to the input data; generating a first compensation value for a target sub-pixel according to the coupling coefficient difference value and target input data of the target sub-pixel; generating a second compensation value for the target sub-pixel according to the first compensation value and the total coupling coefficient; generating an output data for the target sub-pixel according to the target input data and the second compensation value; and controlling a display panel in the display device to display a final image according to the output data.

Abstract: The disclosure provides a display device and an operation method thereof. The display device includes a display panel and a driving circuit. The display panel has at least one native conductive line for a display driving operation. The driving circuit is coupled to the at least one native conductive line. During a display driving period, the driving circuit performs the display driving operation on the display panel through the at least one native conductive line. During a heating period, the driving circuit performs a heating operation on the display panel through the at least one native conductive line.

Abstract: A random number generator includes a pre-processing circuit and a chaos random number generator (CRNG). The pre-processing circuit includes a perturbation source and a control circuit, wherein the control circuit is coupled to the perturbation source. The CRNG, which is coupled to the pre-processing circuit, includes a chaos system and a post-processing circuit, wherein the post-processing circuit is coupled to the chaos system.

Abstract: A transformer device and a drive circuit are provided. The transformer device includes an alternating current (AC) input terminal, a bridge rectifier circuit, a high-frequency voltage conversion circuit, a power switch circuit, an optical coupling circuit, a zero voltage and operation voltage dividing circuit, and a primary-side controller. The power switch circuit is controlled by a driving signal. The primary-side controller operates according to an operating voltage. The primary-side controller sets itself to one of multiple operating modes according to a load detection signal provided by the optical coupling circuit and a zero voltage detection signal provided by the zero voltage and operation voltage dividing circuit, and adjusts an amplitude and a frequency of a PWM signal in the driving signal according to the set operating mode. The operating mode at least includes a first load mode, a second load mode, and a standby mode.

Abstract: A driver circuit configured to drive a display panel to perform a display function and a touch function is provided. The driver circuit includes a plurality of pads and a switch circuit. The plurality of pads are coupled to the display panel and grouped into several pad groups. A synchronization driving signal is applied to the pad groups in a touch sensing phase, and the synchronization driving signal has a first level. The switch circuit is coupled to the pads. The switch circuit is configured to receive a common signal and a system voltage signal, and output the common signal and the system voltage signal to the pad groups in a time division manner. The common signal has a second level, and the system voltage signal has a third level. Voltage levels of the pad groups are changed from the second level to the first level in different times, and the second level is smaller than the first level.

Abstract: An image compensation circuit for controlling a luminance of a display panel is configured to: receive a plurality of image data; perform gamma tuning to convert the plurality of image data into a plurality of original gamma codes according to a plurality of first compensation values corresponding to a first operation mode; calculate a plurality of gamma difference values between the plurality of first compensation values and a plurality of second compensation values corresponding to a second operation mode; and calculate a plurality of output gamma codes corresponding to the second operation mode according to the plurality of original gamma codes by using the plurality of gamma difference values.

Abstract: A method of decoding a picture frame from a bitstream includes grouping N tiles of the picture frame into P sub-pictures, the P sub-pictures being non-overlapping with each other, a first sub-picture of the P sub-pictures comprising Q columns of tiles, N being an integer exceeding 1, P, Q being positive integers, and partitioning a first column of tiles of the Q columns of tiles into M sub-slices, the M sub-slices being non-overlapping with each other, M being an integer exceeding 1. The method further includes obtaining first tile information from a memory prior to decoding a current sub-slice of the M sub-slices, a first processor decoding the current sub-slice of the M sub-slices according to the first tile information, and storing second tile information in the memory upon completion of decoding the current sub-slice of the M sub-slices.

Abstract: An electronic circuit including a plurality of common terminals, a first circuit, a second circuit, and a plurality of switch units is provided. The first circuit is configured to output display driving signals to data lines of a display panel via the common terminals. The second circuit is configured to receive fingerprint sensing signals from fingerprint sensing lines of the display panel via the common terminals. Each of the switch units includes a first terminal coupled to one of the common terminals and a plurality of second terminals coupled to the first circuit and the second circuit. The switch units are grouped into a plurality of groups, and each group corresponds to a fingerprint sensing channel of the second circuit.

Abstract: A driving circuit includes a first driving signal generator, a first voltage conversion circuit and a first switch. The first driving signal generator generates a first driving signal according a first input signal, wherein the first driving signal is a pulse width modulated signal. The first voltage conversion circuit is coupled between the first driving signal generator and a control terminal of a first power transistor, converts the first driving signal to an output driving signal by charges a capacitor and discharges the capacitor, wherein the output driving signal is output to the control terminal of the first power transistor. The first switch is couple with the first power transistor in series, and is controlled by a control signal to be turned-on or cut-off.

Abstract: An image compensation circuit for an image sensor includes a gain amplifier, a compensation control circuit, a memory and a digital-to-analog converter (DAC). The gain amplifier is used for receiving a plurality of image signals from the image sensor and amplifying the plurality of image signals. The compensation control circuit is used for generating a plurality of compensation values for the plurality of image signals. The memory, coupled to the compensation control circuit, is used for storing the plurality of compensation values. The DAC, coupled to the memory and the gain amplifier, is used for converting the plurality of compensation values into a plurality of compensation voltages, respectively, to compensate the plurality of image signals with the plurality of compensation voltages.

Abstract: A display apparatus including a foldable touch display panel and a display driving device is provided. The foldable touch display panel includes a plurality of touch sensors. The display driving device is coupled to the foldable touch display panel. The display driving device is configured to determine a folding angle of the foldable touch display panel according to a capacitance variation of the touch sensors in a folded state, and drive the foldable touch display panel to operate in a full panel display mode or in a partial panel display mode according to the folding angle.

Abstract: The disclosure provides a driving device for a self-luminous display panel and an operation method thereof. The driving device includes multiple GAMMA voltage circuits, a group of driving channels, and a routing circuit. Each driving channel is coupled to the corresponding GAMMA voltage circuit to receive a corresponding group of GAMMA voltages. Each driving channel converts corresponding sub-pixel data into a corresponding gray scale voltage based on the corresponding group of GAMMA voltages. The routing circuit is coupled to the output terminals of the driving channels. The routing circuit dynamically changes the coupling relationship between the driving channels and multiple data lines of the self-luminous display panel during different scanning periods.

Abstract: According to an embodiment of the invention, a backlight driver of driving a light-emitting diode (LED) string via a driving transistor in a load path is provided. The LED string, the driving transistor, and an electrical load are coupled to form the load path. The backlight driver includes a current regulator and a headroom detection circuit. The current regulator is coupled to the driving transistor and the first terminal of the electrical load to control a driving current flowing through the load path according to at least a feedback voltage from a first terminal of the electrical load. The headroom detection circuit is coupled to the first terminal of the electrical load and a voltage regulator to control the voltage regulator to regulate a supply voltage to a first terminal of the LED string according to at least the feedback voltage.