Abstract: A touch scanning method shortening a first touch latency includes: scanning a Mth column of the N-column touch panel according to a touch scan (TSHD) signal; determining whether the finger is on the Mth column of the N-column touch panel according to a scan data signal; performing a fast done process according to a fast done signal when the finger is on the Mth column of the N-column touch panel; determining whether M equals to N when the finger is not on the Mth column of the N-column touch panel; and resetting M to 1 according to a scan start signal and performing an algorithm according to a finish flag signal.

Abstract: An electronic circuit, adapted to drive a display panel comprising touch sensors, is provided. The electronic circuit can include a display driving circuit, a timing circuit and a touch scan circuit. The display driving circuit drives a touch display panel. The timing circuit receives a flag signal from a processing circuit and generates a scan start signal according to the flag signal. The touch scan circuit generates a plurality of touch scan signals according to the scan start signal and a touch column synchronization signal. The touch scan circuit determines a start time of a touch frame period according to a pulse of the scan start signal. The scan start signal can be asynchronous or delayed with respect to a touch frame synchronization signal generated by the display driving circuit.

Abstract: A touch panel module including a touch panel area and a non-touch panel area is provided. The touch panel module includes a touch panel. The touch panel is located in the touch panel area. The touch panel senses a touch gesture by using a plurality of first and second sensing electrodes. At least one part of the first sensing electrodes is located in the non-touch panel area. Another one part of the first sensing electrodes and a whole of the second sensing electrodes are located in the touch panel area. The touch gesture touches the touch panel module to generate a touch area. A touch position corresponding to the touch gesture on the touch panel is determined based on a ratio of an area of the first sensing electrodes touched by the touch gesture and the touch area.

Abstract: A touch panel module including a touch panel area and a non-touch panel area is provided. The touch panel module includes a touch panel. The touch panel is located in the touch panel area. The touch panel senses a touch gesture by using a plurality of first and second sensing electrodes. At least one part of the first sensing electrodes is located in the non-touch panel area. Another one part of the first sensing electrodes and a whole of the second sensing electrodes are located in the touch panel area. The touch gesture touches the touch panel module to generate a touch area. A touch position corresponding to the touch gesture on the touch panel is determined based on a ratio of an area of the first sensing electrodes touched by the touch gesture and the touch area.

Abstract: The present disclosure provides a detection method for a touch panel. The touch panel comprises a plurality of a first sensing electrode and a plurality of a second sensing electrode. The detection method comprises sensing a total self-capacitance of the first sensing electrodes, a plurality of self-capacitance of the second electrodes and a plurality of mutual capacitance when an object touches the touch panel; obtaining a plurality of self-capacitance of the first sensing electrodes according to the total self-capacitance of the first sensing electrodes, the self-capacitances of the second electrodes and the mutual capacitances and calculating coordinates of an object on the touch panel according to the self-capacitances of the first sensing electrodes.

Abstract: A sensing method for a touch panel is disclosed. The touch panel includes a plurality of sensing lines and a plurality of driving lines. The sensing method includes generating an electromagnetic signal or a capacitive signal; forming a plurality of first loops through the plurality of sensing lines to sense X coordinate of the electromagnetic signal on the touch panel and forming a plurality of second loops through the plurality of driving lines to sense Y coordinate of the electromagnetic signal on the touch panel when the electromagnetic signal is generated; sensing X coordinate of the capacitive signal through the plurality of sensing lines and sensing Y coordinate of the capacitive signal through the plurality of driving lines when the capacitive signal is generated.

Abstract: A touch sensing apparatus includes a touch sensing panel and a touch controller. The touch sensing panel includes a plurality of sensing channels for receiving a plurality of driving signals and sensing a touch event according to the driving signals. In a sensing duration, the touch sensing panel is switched between at least two operation modes among a plurality of operation modes to sense the touch event. The touch controller is configured to determine the type of the touch event according to the sensing results of the touch sensing panel in the at least two operation modes. In addition, a touch sensing method used in the above-mentioned touch sensing apparatus is provided as well.

Abstract: A method for determining an incline angle of electromagnetic pointer is disclosed. The method comprises the following steps. First of all, an electromagnetic input pen/stylus is provided over antennas Xn/Yn along X/Y axes. Then a plurality of antennas at two sides of the antennas Xn/Yn are scanned. Next the signal distributions of the antennas Xn/Yn and the antennas at two side are analyzed. Then the number of antenna sampled of the signal distributions of the antennas at two side is determined. Next the antennas at two side are selected and the signal distributions are sampled and received according to the number of antenna sampled. Finally, an incline angle of the electromagnetic pointer is determined according to the sampled signal distributions.

Abstract: Method for frequency detection and detecting variation of frequency is disclosed. The method comprises the following steps. First of all, a pointer is provided over an electromagnetic position detection apparatus, wherein the pointer emits an electromagnetic signal with a frequency f1. Next a base integration signal is generated according to the integration of the electromagnetic signal with the frequency f1 for a current integration period x. Then a current integration signal is generated according to the integration of the electromagnetic signal with the frequency f1 for the current integration period x and a predetermined electromagnetic signal with a predetermined frequency f0 for the predetermined integration period y. Finally, a frequency variation value ?f between the frequency f1 and a current frequency fc is calculated and obtained according to the current integration signal and the base integration signal.

Abstract: An angle correcting method for a position pointer induced by a handwritten input device is disclosed. The steps of the method includes: firstly, an inclined angle table is provided. Then, a first induced voltage amplitude of a first position where the position pointer touches and a second induced voltage amplitude of a second position where is near to the first position are induced. The ratio of the first induced voltage amplitude to the second induced voltage amplitude is calculated to generate an amplitude ratio. Finally, the inclined angle table is looked up to find an inclined angle according to the amplitude ratio.

Abstract: A method for controlling a touch panel is provided. A touch control device has a control circuit and the touch panel. The control circuit first detects a touched point within an entire detection area on the touch panel until a first touched point is detected within the entire detection area. After detecting the first touched point, the control circuit narrows a range of detecting the touched point on the touch panel, so as to detect the touched point within a local detection area on the touch panel. The entire detection area includes and is greater than the local detection area. Accordingly, the time for detecting the touched point can be reduced, and the speed of detecting the touched point can be increased.

Abstract: The present invention discloses a space-bound-free tablet and its coordinate determining circuit for determining a coordinate of a stylus pen. The coordinate is computed by the coordinate determining circuit in which first voltage, a second voltage, and a third voltage is obtained, where the first voltage equals the maximum detection voltage, the second voltage and third voltage are obtained from two antennas, and both of the two antennas are at the same side of the antenna that induces the maximum detection voltage.

Abstract: A multi-antenna loop layout which comprises an array of physical antenna loops, each antenna loop comprising first and second conductive ends. Each conductive end of each antenna loop in the array is coupled to an electrically common contact point that is electrically in common with one or more conductive ends of a subset of other antenna loops in the array. The cumulative total of electrically common contact points, each common contact point being shared by two or more conductive ends of two or more antenna loops in the array, equals a first value T, the first value T being equal to the sum of a second plural value M and a third plural value N. The number of physical antenna loops is equal to at least the product of M and N, and may be as great as T*(T?1)/2.

Abstract: An angle correcting method for a position pointer induced by a handwritten input device is disclosed. The steps of the method includes: firstly, an inclined angle table is provided. Then, a first induced voltage amplitude of a first position where the position pointer touches and a second induced voltage amplitude of a second position where is near to the first position are induced. The ratio of the first induced voltage amplitude to the second induced voltage amplitude is calculated to generate an amplitude ratio. Finally, the inclined angle table is looked up to find an inclined angle according to the amplitude ratio.

Abstract: Method for frequency detection and detecting variation of frequency is disclosed. The method comprises the following steps. First of all, a pointer is provided over an electromagnetic position detection apparatus, wherein the pointer emits an electromagnetic signal with a frequency f1. Next a base integration signal is generated according to the integration of the electromagnetic signal with the frequency f1 for a current integration period x. Then a current integration signal is generated according to the integration of the electromagnetic signal with the frequency f1 for the current integration period x and a predetermined electromagnetic signal with a predetermined frequency f0 for the predetermined integration period y. Finally, a frequency variation value ?f between the frequency f1 and a current frequency fc is calculated and obtained according to the current integration signal and the base integration signal.

Abstract: A method for determining an incline angle of electromagnetic pointer is disclosed. The method comprises the following steps. First of all, an electromagnetic input pen/stylus is provided over antennas Xn/Yn along X/Y axes. Then a plurality of antennas at two sides of the antennas Xn/Yn are scanned. Next the signal distributions of the antennas Xn/Yn and the antennas at two side are analyzed. Then the number of antenna sampled of the signal distributions of the antennas at two side is determined. Next the antennas at two side are selected and the signal distributions are sampled and received according to the number of antenna sampled. Finally, an incline angle of the electromagnetic pointer is determined according to the sampled signal distributions.

Abstract: An electromagnetic antenna loop layout for use with an electromagnetic input apparatus is disclosed. The electromagnetic antenna loop layout comprises a plurality of electromagnetic antenna loops in parallel in each other, wherein each electromagnetic antenna loop has a first terminal connecting to a switch, and at least two adjacent electromagnetic antenna loops has a second terminal connecting to a common end (COM).

Abstract: A method for simultaneously operating multiple pointers on an electromagnetic position detection apparatus is disclosed. The method comprises the following steps. First of all, at least one pointer is provided on the electromagnetic detecting apparatus. Next a scanning process is performed to determine whether a first pointer is recognized. Then if the first pointer is recognized, an electromagnetic power with frequency A is emitted and an electromagnetic signal of the first pointer is received. Next the coordinate of the first pointer is calculated. Next a scanning process is performed to determine whether a second pointer is recognized. Then if the second pointer is recognized, an electromagnetic power with frequency B is emitted and an electromagnetic signal of the second pointer is received. Finally, the coordinate of the second pointer is calculated and the above mentioned steps are repeated.

Abstract: The present invention relates to an electromagnetic inductive system with multi-signals and processing method for multi-signals, and particularly relates to an electromagnetic inductive system capable of identifying frequencies with multi-signals and method capable of identifying frequencies by applying processing method for multi-signals. In the electromagnetic inductive system of the present invention, a position calculating circuit and a pressure calculating circuit are integrated into a multi-signals process circuit. Therefore, the elements and the cost of the electromagnetic inductive system are reduced. Furthermore, it is not necessary to calculate the pressure accurately because the processing method for multi-signals is applied for calculating pressure and selecting functions. Therefore, the method for calculating pressure and selecting functions are simplified and improved.

Abstract: The present invention relates to an integrated substrate and display with electromagnetic sensor loop, and particularly relates to a TFT/CF array substrate and flat display with electromagnetic sensor loop. In the present invention, electromagnetic sensor loop is formed on one substrate of a display panel for getting the integrated substrate with electromagnetic sensor loop. The integrated substrate with antenna loop has both a function of a detecting board and a function of one substrate of the display panel, for example a function of a TFT/CF array substrate.