Abstract: A method for operating a display includes receiving a horizontal synchronization (HSYNC) signal from a display driver of the display, the HSYNC signal including a plurality of pulses; measuring a parameter of the HSYNC signal within a frame; and initiating a touch scan on a touch sensing panel of the display based on the measured parameter.

Abstract: In an example, a method of sensing on a touchscreen including a plurality of touch sensors arranged in rows and columns on the touchscreen is described. The method includes detecting a passive touch on the touchscreen and a positon of an active stylus; determining a plurality of locations across the touchscreen corresponding to the passive touch and a positon of the active stylus, where each of the plurality of locations corresponds to a location of one of the plurality of touch sensors. The method includes transmitting a first uplink signal to a first group of the plurality of locations including a first fraction of the plurality of locations; and transmitting a second uplink signal to a second group of the plurality of locations including a second fraction of the plurality of locations, the first uplink signal being different from the second uplink signal.

Abstract: A fault detector circuit is provided for detecting or controlling any signal related to a laser emitter in an electronic device. The fault detector circuit includes a first NMOS transistor and a comparator. A drain of the first NMOS transistor is coupled to a first supply voltage through the laser emitter. A gate of the first NMOS transistor is coupled to a control voltage. A source of the first NMOS transistor is grounded. The comparator is coupled to the drain of the first NMOS transistor and a reference voltage. The comparator compares a voltage of the drain of the first NMOS transistor with the reference voltage to generate a first detecting signal for determining whether or not the first supply voltage of the laser emitter needs to be cut off.

Abstract: A fault detector circuit is provided for detecting or controlling any signal related to a laser emitter in an electronic device. The fault detector circuit includes a first NMOS transistor and a comparator. A drain of the first NMOS transistor is coupled to a first supply voltage through the laser emitter. A gate of the first NMOS transistor is coupled to a control voltage. A source of the first NMOS transistor is grounded. The comparator is coupled to the drain of the first NMOS transistor and a reference voltage.

Abstract: A proximity sensing module with dual transmitters includes a circuit board, a package housing, a sensing assembly and a transmitter unit. The sensing assembly includes a sensor disposed on the circuit board. The transmitter unit is shielded from the sensing assembly through the package housing and includes a first transmitter and a second transmitter both disposed on the circuit board. One of the first transmitter and the second transmitter is closer to the sensing assembly.

Abstract: A method for ambient light subtraction providing a sensor having an emitter, a receiver, and a processor; performing a first sampling process, during which the emitter does not emit signals, the receiver receives a first ambient light signal converted into a first data set by the processor; performing a second sampling process, during which the emitter emits a detecting signal, the receiver receives a second ambient light signal and the detecting signal converted into a second data set by the processor; performing a third sampling process, during which the emitter does not emit signals, the receiver receives a third ambient light signal converted into a third data set by the processor; deriving an average value by calculating the average of the first data set and the third data set; and deriving a difference value by calculating the difference between the second data set and the average value.

Abstract: A method for ambient light subtraction providing a sensor having an emitter, a receiver, and a processor; performing a first sampling process, during which the emitter does not emit signals, the receiver receives a first ambient light signal converted into a first data set by the processor; performing a second sampling process, during which the emitter emits a detecting signal, the receiver receives a second ambient light signal and the detecting signal converted into a second data set by the processor; performing a third sampling process, during which the emitter does not emit signals, the receiver receives a third ambient light signal converted into a third data set by the processor; deriving an average value by calculating the average of the first data set and the third data set; and deriving a difference value by calculating the difference between the second data set and the average value.

Abstract: A proximity sensing module with dual transmitters includes a circuit board, a package housing, a sensing assembly and a transmitter unit. The sensing assembly includes a sensor disposed on the circuit board. The transmitter unit is shielded from the sensing assembly through the package housing and includes a first transmitter and a second transmitter both disposed on the circuit board. One of the first transmitter and the second transmitter is closer to the sensing assembly.

Abstract: A proximity sensing module with dual transmitters includes a circuit board, a package housing, a transmitter unit and a sensing assembly. The transmitter unit includes a first transmitter and a second transmitter. The first transmitter and the second transmitter are disposed on the circuit board. The sensing assembly includes a sensor disposed on the circuit board. The transmitter unit is shielded from the sensing assembly through the package housing. One of the first transmitter and the second transmitter is nearer to the sensing assembly than the other one is.

Abstract: A proximity sensing module with dual transmitters includes a circuit board, a package housing, a transmitter unit and a sensing assembly. The transmitter unit includes a first transmitter and a second transmitter. The first transmitter and the second transmitter are disposed on the circuit board. The sensing assembly includes a sensor disposed on the circuit board. The transmitter unit is shielded from the sensing assembly through the package housing. One of the first transmitter and the second transmitter is nearer to the sensing assembly than the other one is.

Abstract: An exemplary embodiment of the present disclosure illustrates a gesture sensing module disposed on a substrate. The gesture sensing module includes at least one light emitting unit, at least one light sensor, and a control circuit. The light emitting unit provides a light to illuminate a sensing area, wherein a central optical axis of the light forms an angle with a normal vector of the substrate, and the angle is not equal to 0. The light sensor senses a reflection light which a target in the sensing area reflects the light, and generate a sensing signal according to the reflection light. The control circuit coupled to the light sensor and the light emitting unit determines a traveling direction of the target according to the sensing signal.

Abstract: An exemplary embodiment of the present disclosure illustrates a gesture sensing module disposed on a substrate. The gesture sensing module includes at least one light emitting unit, at least one light sensor, and a control circuit. The light emitting unit provides a light to illuminate a sensing area, wherein a central optical axis of the light forms an angle with a normal vector of the substrate, and the angle is not equal to 0. The light sensor senses a reflection light which a target in the sensing area reflects the light, and generate a sensing signal according to the reflection light. The control circuit coupled to the light sensor and the light emitting unit determines a traveling direction of the target according to the sensing signal.

Abstract: An ambient light sensing method is provided. The ambient light sensing method comprises: acquiring the sensitivity settings, an exposure time and obtaining a sensing signal of a light sensor according to the sensitivity settings and the exposure time; determining whether the magnitude of the sensing signal is within a predetermined range when the sensing signal is available, wherein the predetermined range has an upper value and a lower value; updating the sensitivity settings and the exposure time of the light sensor according to the determined result for the magnitude of the sensing signal; and acquiring the sensing signal of the light sensor with the updated sensitivity settings and the updated exposure time.

Abstract: An exemplary embodiment of the present disclosure illustrates a proximity sensing method used in a controller of a proximity sensing device. Firstly, a cross talk value is initialized. After the cross talk value is initialized, whether the cross talk value should be updated is judged at least according to a first sensing value currently received from a sensing unit of the proximity sensing device. When the cross talk value is judged to be updated, the cross talk value is updated at least according to a first sensing value. Then, a compensated sensing value is obtained by subtracting the cross talk value from the first sensing value.

Abstract: An exemplary embodiment of the present disclosure illustrates a proximity sensing method used in a controller of a proximity sensing device. Firstly, a cross talk value is initialized. After the cross talk value is initialized, whether the cross talk value should be updated is judged at least according to a first sensing value currently received from a sensing unit of the proximity sensing device. When the cross talk value is judged to be updated, the cross talk value is updated at least according to a first sensing value. Then, a compensated sensing value is obtained by subtracting the cross talk value from the first sensing value.

Abstract: An ambient light sensing method, comprising: acquiring the sensitivity settings, an exposure time and obtaining a sensing signal of a light sensor according to the sensitivity settings and the exposure time; determining whether the magnitude of the sensing signal is within a predetermined range when the sensing signal is available, wherein the predetermined range has an upper value and a lower value; updating the sensitivity settings and the exposure time of the light sensor according to the determined result for the magnitude of the sensing signal; and acquiring the sensing signal of the light sensor with the updated sensitivity settings and the updated exposure time.

Abstract: A detection method of an optical navigation device is disclosed. The device is used for determining whether an object is lifted from the optical navigation device or not. The method includes steps of reading the detection image detected by the optical navigation device, calculating the image signal value thereof during non-lift status, and integrating a historical threshold value with the image signal value according to adaptive factors for generating an adjustment threshold value serving as the navigation threshold of the detection image. The historical threshold value is the navigation threshold of a former detection image of the detection image. A step of comparing the adjustment threshold with the image signal value for determining whether the image signal value passes the navigation threshold or not may also be included. If the image signal value does not pass the navigation threshold, the object is determined as in the lift status.

Abstract: A tapping detection method of an optical navigation module is disclosed. The module includes an optical sensor and a processor. The method includes steps of calculating a displacement quantity of an object contacting with the optical navigation module according to a sense image sensed by the optical sensor, and comparing the displacement quantity with a displacement threshold value. When the displacement quantity is smaller than the displacement threshold value, the method further includes steps of calculating a brightness difference value of the sense image, and comparing the brightness difference value with a brightness threshold value. When the brightness difference value is smaller than the brightness threshold value, the optical navigation module may be determined to be tapped by the object.

Abstract: An image processing method includes the following steps. The first step is utilizing a linear image capturing apparatus with odd number of image capturing units to capture image portions of object. Next step is taking the image portions which are captured by the first-end and the right-end image capturing units as the reference and comparing the image portions which are captured by the central image capturing units with the reference so as to correct and eliminate the overlapped noise. Next step is interlacing and re-constructing the processed image portions which have no overlapped portions as the integrated image.

Abstract: Disclosed are various embodiments of temperature-compensated relaxation oscillator circuits that may be fabricated using conventional CMOS manufacturing techniques. The relaxation oscillator circuits described herein exhibit superior low temperature coefficient performance characteristics, and do not require the use of expensive off-chip high precision resistors to effect temperature compensation. Positive and negative temperature coefficient resistors arranged in a resistor array offset one another to provide temperature compensation in the relaxation oscillator circuit.