Abstract:
A detector circuit and detect method of a capacitive touch panel conditionally abort sensing of useless traces of the capacitive touch panel when the capacitive touch panel senses the traces thereof. For a selected trace, the trace voltage thereof is sampled to be compared with a threshold voltage. If the sampled voltage is lower than the threshold voltage, the sensing of this trace is aborted and thus the operation of the detector circuit is reduced to improve the performance of the capacitive touch panel.
Abstract:
A capacitive touchpad includes a plurality of parallel traces configured in a capacitance sensor layout scheme such that the maximum sensor gap is smaller than the sensor pitch to improve the sensor response linearity of the capacitive touchpad.
Abstract:
Ghost resolution sensing methods are provided for capacitive touch panels. When ghost is detected involving two points on a capacitive touch panel, for each of the two points, the intersected traces at that one are concurrently charged to sense the capacitance value from either one of the intersected traces, and according thereto, a real point and a ghost point can be distinguished from each other. Alternatively, the intersected traces are crisscross driven by two synchronous and in phase signals or synchronous but out of phase signals, to sense the capacitance values at the two points. Preferably, intersectional calibration is performed in conjunction therewith, to recognize the real points.
Abstract:
A remote controller controls various electronic devices through device instructions corresponding to the electronic devices. The device instructions are grouped into group instructions for various requirements. Therefore, any one of the group instructions includes device instructions of the same electronic device or different electronic devices. Each group instruction corresponds to a user-defined manipulation, such as a given handwriting trace or voice. In this way, a user can use a single handwriting trace or voice command to order the remote controller to send a corresponding group instruction. Thus, different electronic devices can be controlled to serially execute various instructions.
Abstract:
For a capacitive touch device having a capacitive touch sensor to be sensed to generate sensed values, a sensing apparatus and method statistically analyze the sensed values generated in a certain time period to evaluate the sensing quality thereof, discard the poor reliable sensed values, and re-sense the capacitive touch sensor to generate new sensed values, by which the resultant output signal will have improved reliability.
Abstract:
A fan motor silicon steel sheet structure and a fan motor thereof. The silicon steel sheet structure includes a silicon steel sheet assembly having multiple silicon steel sheets, which overlap one another. The silicon steel sheets include at least one first silicon steel sheet and multiple second silicon steel sheets. The first silicon steel sheet has a first bore and at least one protrusion section. The protrusion section inward protrudes from an inner circumference of the first bore. The first silicon steel sheet is overlaid on one side of the second silicon steel sheets. Each of the second silicon steel sheets has a second bore in communication with the first bore. The fan motor silicon steel sheet structure is able to effectively secure the bearing and provide a dustproof effect. With such structure, the manufacturing cost of the fan motor is lowered.
Abstract:
A detector circuit and detect method of a capacitive touch panel conditionally abort detection of useless traces of the capacitive touch panel when the capacitive touch panel detects the traces thereof. For a selected trace, first several digital values obtained by detecting the selected trace are compared with a threshold value to identify whether the selected trace is useful or not, and if the selected trace is identified useless, an abort signal is triggered to abort detection of the selected trace. Therefore, the performance of the capacitive touch panel is improved with higher frame rate and less power consumption.
Abstract:
Methods are proposed for object positioning for an X-Y projected capacitive touch panel. In an embodiment, capacitance sensing under inphase excitation of traces is applied to set a base value when the capacitive touch panel is not touched and to obtain capacitances at intersections when the capacitive touch panel is touched, and the base value is compared with the measured capacitances to identify touch points. In other embodiments, X-Y projected sensing and all-point sensing are combined to reduce the amount of calculation and achieve the same positioning effect as an all-point capacitive touch panel.
Abstract:
A two-dimensional capacitive touch panel includes three electrodes made from a single sensor layer, with the first one of the electrodes between the other two of the electrodes to establish mutual capacitances between the first electrode and the other two, respectively. The mutual capacitance between the first and second electrodes increases along a direction, and the mutual capacitance between the first and third electrodes decreases along a direction. The first electrode is applied with an excitation signal for sensing variations in the mutual capacitances to calculate a position in the direction that is touched by an external conductor.
Abstract:
Two sensing units are configured as an exciter and a sensor connected to two trace lines, respectively, for mutual capacitance sensing from the capacitance units including these two trace lines. The two sensing units connect the two trace lines together to balance them to a same voltage level first, and then disconnect them from each other. Thereafter, the exciter connects the first trace line to an excitation node to induce a charge change on the second trace line, and the sensor senses the charge change to detect the variation of the mutual capacitance between the two trace lines.