Patent application number | Description | Published |
20130176280 | METHOD OF DETECTING FLOATING MODE OF A TOUCH PANEL - A method of detecting floating mode of a touch panel has steps of reading a sensing cluster and presetting a detection window; taking each sensing point of the sensing cluster as a center point of the detection window; after determining that the center point has a negative sensing value qualifying to be generated under a floating mode, further determining a count of the sensing points other than the center point having the sensing values generated under a grounding mode and incrementing an accumulative number by one if the count exceeds a first critical value; keeping incrementing the accumulative number until each sensing point in the sensing cluster has been taken as the center point of the detection window for scanning; and determining if the accumulative number exceeds a second critical value, and if positive, further determining that the current sensing cluster is generated under the floating mode. | 07-11-2013 |
20130181916 | SCAN METHOD FOR A TOUCH PANEL - A scan method for a touch panel has steps of: receiving a self-sensing frame; calculating sensing slopes between each sensing line and its neighboring sensing lines in the self-sensing frame; determining whether any sensing slope is larger than a slope threshold, and marking the sensing line if the sensing slope is larger than the slope threshold; and executing a mutual scan approach on the marked sensing lines to produce a mutual sensing frame without sensing point caused by noise. Further, the present invention also increases the frame rate since only a part of sensing lines need to be scanned. | 07-18-2013 |
20130222047 | DRIVING METHOD FOR CHARGER NOISE REJECTION IN TOUCH PANEL - A driving method for charger noise rejection in a touch panel has steps of: reading the sensing frame of the touch panel with a self-capacitance sensing mode, marking at least one first-axis sensing line having a recognizable sensing value, and driving the at least one marked first-axis sensing line with a mutual-capacitance sensing mode to acquire at least one sensing value corresponding to at least one sensing point on each one of the at least one marked first-axis sensing line. Accordingly, the charger noise is rejected in the touch panel by the driving method of the present invention. Additionally, a frame rate is further increased since the sensing lines are partially driven under the mutual-capacitance sensing mode. | 08-29-2013 |
20150077386 | SCANNING METHOD WITH ADJUSTABLE SAMPLING FREQUENCY AND TOUCH DEVICE USING THE SAME - A scanning method with adjustable sampling frequency includes steps of pre-scanning a sensing unit of a touch device to acquire capacitance offsets of sensor traces of the sensor unit aligned in at least one of a first-axis direction and a second-axis direction, determining sampling frequencies according to the capacitance offsets of the respective driven sensor traces, and sampling the sensing unit with the determined sampling frequencies. As the capacitance offsets reflect RC load values corresponding to the sensor traces in the first-axis direction, the sampling frequencies can be adjusted according to the actual RC load values when the sensing unit is scanned to receive sensed signals, thereby effectively raising a report rate of touch events. | 03-19-2015 |
20150103040 | TOUCH DEVICE WITH FUNCTION SWITCH CONTROL, SYSTEM WITH THE TOUCH DEVICE, AND METHOD FOR CONTROLLING FUNCTION SWITCH OF THE TOUCH DEVICE - A method for controlling function switch of a touch device has steps of reading sensing information on a touch device when an object approaches or contacts the touch device, determining if the sensing information meets a function-switching condition, and if positive, switching the touch device from the first function mode to the second function mode. When executing an application and receiving a switch-on signal from the touch device, a host computer connected to the touch device activates a function to be switched, for example, an eraser function, a webpage button clicking function, a browser zoom function upon drawing in a drawing application. | 04-16-2015 |
20150145820 | GRAPHICS EDITING METHOD AND ELECTRONIC DEVICE USING THE SAME - The present disclosure provides a graphics editing method, which is adapted to an electronic device having a touch panel and operating in a graphic editing mode. The method includes the following steps. While the electronic device is operating in the graphic editing mode, a first function is executed such that the electronic device displays a graphical trace according to an operation performed on the touch panel by a first touch object. Thereafter, when at least one touch event occurs on the electronic device is detected, the touch panel senses and computes a sensing area associated with the touch event. The electronic device then compares the sensing area and a predefined area threshold. When the electronic device determines that the sensed area is larger than the predefined area threshold, the electronic device executes a second function under the graphic editing mode. | 05-28-2015 |
20150153901 | SCAN METHOD FOR A CAPACITIVE TOUCH PANEL - A scan method for a capacitive touch panel has steps of performing a relatively small first number of estimation scans on multiple sensing lines of a capacitive touch panel and recording results of the estimation scans, marking the sensing lines meeting a predetermined condition according to the results of the estimation scans, and performing a relatively large second number of practical scans on the marked sensing lines. Given the first-stage estimation scans and the second-stage practical scans, the sensing lines possibly touched by a touch object can be rapidly identified and marked, and the second-stage practical scans are performed on the marked sensing lines. Accordingly, noises and errors can be effectively reduced, accurate scan can be ensured, and higher frame rate can be achieved. | 06-04-2015 |