Abstract: A method and device for determining a single touch or multiple touches is disclosed. A touch related sensing information with a single zero-crossing is used for determining a pair of values, and the locations of a pair of centroids are calculated depending on the pair of values. The distance between the locations of the pair of centroids can be used to determine whether the number of touches is one or more.

Abstract: The present invention provides an integration and analog to digital conversion circuit sharing common capacitors. The circuit comprises a capacitor array module, an integration circuit, and an analog to digital conversion (ADC) logic. The capacitor array module has a plurality of capacitors. The integration circuit is configured to integrate an analog signal by the capacitor array module. The ADC logic is configured to convert the output of the capacitor array module to a digital signal.

Abstract: The present invention provides a mutual capacitive multi-touch screen. The conductive strip pattern allows that, when a touch range of each external conductive object on the mutual capacitive multi-touch screen is larger than a predetermined condition, capacitive coupling between each external conductive object and first conductive strip is greater than capacitive coupling between each external conductive object and second conductive strip, such that the proportion of a driving signal flowing out of the first conductive strip via at least one first external conductive object in the external conductive objects and into the second conductive strip via at least one second external conductive object in the external conductive objects decreases as the number of second external conductive objects increases.

Abstract: A method and device for determining a single touch or multiple touches is disclosed. A touch related sensing information with a single zero-crossing is used for determining a pair of values, and the locations of a pair of centroids are calculated depending on the pair of values. The distance between the locations of the pair of centroids can be used to determine whether the number of touches is one or more.

Abstract: A method and device for signal detection is disclosed. At least one detection period is predefined for detecting a signal of a signal source, a differential signal of a pair of signal sources, or a dual-differential signal of three signal sources during at least one clock cycle.

Abstract: The present invention provides a mutual capacitive multi-touch screen. The conductive strip pattern allows that, when a touch range of each external conductive object on the mutual capacitive multi-touch screen is larger than a predetermined condition, capacitive coupling between each external conductive object and first conductive strip is greater than capacitive coupling between each external conductive object and second conductive strip, such that the proportion of a driving signal flowing out of the first conductive strip via at least one first external conductive object in the external conductive objects and into the second conductive strip via at least one second external conductive object in the external conductive objects decreases as the number of second external conductive objects increases.

Abstract: A power management device of a touchable control system includes a boost circuit boosting an output voltage according to an input voltage, a controlling signal for ballasting charging, and a controlling signal for boosting charging, a detection circuit detecting a predetermined value of the output voltage, a modulation circuit, and a loading circuit. The modulation circuit separately modulates the output voltage by the controlling signal for ballasting charging after the output voltage reaches the predetermined value and by the controlling signal for boosting charging before the output voltage reaches the predetermined value according to the detecting of the detection circuit. The loading circuit receives the reached predetermined value of the output voltage according to the modulation of the modulation circuit, wherein the controlling signal for boosting charging modulating the output voltage is more rapid than the controlling signal for ballasting charging modulating the output voltage.

Abstract: The present invention provides a mutual capacitive multi-touch screen. The conductive strip pattern allows that, when a touch range of each external conductive object on the mutual capacitive multi-touch screen is larger than a predetermined condition, capacitive coupling between each external conductive object and first conductive strip is greater than capacitive coupling between each external conductive object and second conductive strip, such that the proportion of a driving signal flowing out of the first conductive strip via at least one first external conductive object in the external conductive objects and into the second conductive strip via at least one second external conductive object in the external conductive objects decreases as the number of second external conductive objects increases.

Abstract: A signal sensing circuit converts a received current input into a voltage output and provides the voltage output to an analog-to-digital converter (ADC) to generate a digital output signal. The voltage output is associated with a circuit having a first reference impedance, and a reference voltage of the ADC is associated with a circuit having a second reference impedance, wherein the circuit having the first reference impedance and the circuit having the second reference impedance are formed by the same material, so that the ratio between the changes in the current input and the changes in the value of the digital output signal is a constant.

Abstract: The present invention provides an integration and analog to digital conversion circuit sharing common capacitors. The circuit comprises a first capacitor array module, a second capacitor module, an integration circuit, an analog to digital conversion (ADC) logic. The first capacitor array module has a plurality of capacitors. The second capacitor array module has a plurality of capacitors. The integration circuit is configured to integrate an analog signal by said first or said second capacitor array module. The ADC logic is configured to convert the output of said first or said second capacitor array module to a digital signal. The ADC logic performs conversion by said first capacitor array module while said integration circuit performs integration by said second capacitor array module, and said ADC logic performs conversion by said second capacitor array module while said integration circuit performs integration by said first capacitor array module.

Abstract: A detecting device and method for a capacitive touch screen is proposed. The present invention employs a multiple-electrode driving mode, which sequentially drives sets of driving electrodes among driving electrodes. A reduced image is generated from the signals of a plurality of detecting electrodes. In addition, a single-electrode driving mode is employed to drive the first and the last driving electrodes, respectively, thereby obtaining first- and second-side 1D sensing information for single-electrode driving from the signals of the detecting electrodes, respectively. An expanded image can be generated based on the first-side 1D sensing information for single-electrode driving, the reduced image and the second-side 1D sensing information for single-electrode driving in order to detect approaches or touches made by external conductive objects to the capacitive touch screen.

Abstract: Electrodes on a touch sensor are connected with pins of an integrated circuit by wires. The wires connecting a first side of the integrated circuit go under the integrated circuit to the electrodes, and wires connecting a second side of the integrated circuit have segments extending away from the touch sensor under the integrated circuit.

Abstract: A method and device for dual-differential sensing is disclosed. The sensing information can be generated from signals provided by a sensing device with a plurality of sensors. Each value of the sensing information corresponds to signals of three sensors, respectively. The sensing device is flexible and configured on a display. The noise effect of the display on the signal of each sensor corresponds to the distance between the display and the sensor. Besides, the noise effect of the display on each value of the sensing information corresponds to the distances between the display and the three sensors, respectively.

Abstract: A method and the device for palm ignoring disclosed. The device comprises a plurality of strips intersecting each other to form a plurality of intersecting regions. A pair of strips intersecting on an intersecting region contact to each other on a contact point to form a depressed intersecting region. The depression depressed by the palm can be determined by comparing the total impedance of the depression with a threshold so as to be ignored.

Abstract: A method and the device for position detection are disclosed. The device comprises a plurality of strips intersecting each other to form a plurality of intersecting regions. A pair of depressed strips intersecting on an intersecting region contact to each other to form a depressed intersecting region. According to the depressed intersecting regions, each depression can be determined. The total contact impedance of a depressing crossover a plurality of intersecting regions is the parallel contact impedance of the contact impedances of all intersecting regions corresponding to the same depression.

Abstract: A method and the device for position detection are disclosed. The device comprises a plurality of strips intersecting each other to form a plurality of intersecting regions. A pair of depressed strips intersecting on an intersecting region contact to each other on a contact point to form a depressed intersecting region, wherein the contact impedance of the contact point is determined according to the position of the contact point and the voltages on the contact point of one and the other of the pair depressed strips.

Abstract: The method and device for capacitive position detection are disclosed. A capacitive sensing device including pluralities of first sensors and second sensors. A controller obtains a 2-D sensing information, the 2-D sensing information comprises a plurality of first 1-D sensing information from the capacitive sensing device, and obtains at least one second 1-D sensing information, wherein the value of the at least one second 1-D sensing information is generated based on the sum of the sensed values of one of first 1-D sensing information, determines at least one detected range in the 2-D sensing information based on the at least one second 1-D sensing information when the capacitive sensing device is being touched or approached by at least one external object, and determines each touch related sensing information corresponding to the at least one external object in the at least one detected range.

Abstract: A device comprises a plurality of strips intersecting each other to form a plurality of intersecting regions. A pair of strips intersecting on an intersecting region contact to each other on a contact point to form a depressed intersecting region. The erroneously determined intersecting regions can be detected by comparing the contact points with the corresponding intersecting regions so as to provide the only correct contact points.

Abstract: The present invention discloses a multi-stage sample and hold (S/H) circuit that includes: a first S/H circuit for sampling a sensing signal of a sensor multiple times and accumulating them into a first sampled signal, and outputting the first sampled signal; and a second S/H circuit for receiving the plurality of first sampled signals and accumulating them into a second sampled signal. As a result, when one or more first sampled signals are saturated due to instantaneous noise, the second sampled signal is not saturated, thereby increasing the noise tolerance of the multi-stage S/H circuit.

Abstract: The present invention provides a circuit for concurrent integration of multiple differential signals. The circuit comprises a plurality of Stage 1 integration circuits arranged in an array and a plurality of Stage 2 integration circuits arranged in an array. Each of the Stage 1 integration circuits is configured to concurrently integrate an input signal, and to send out a Stage 1 positive signal and a Stage 1 negative signal that is reverse to the Stage 1 positive signal. Each of the Stage 2 integration circuits is configured to integrate a differential signal from a Stage 1 positive signal sent from a corresponding Stage 1 integration circuit and a Stage 1 negative signal sent from another Stage 1 integration circuit next to the corresponding Stage 1 integration circuit to output a Stage 2 signal.