Abstract: A method for compensating electromagnetic inductive pressure level of an electromagnetic pen is disclosed. First of all, an electromagnetic pen is provided on a touch panel, wherein the touch panel has a sensor layer and at least one sensor coil on a transparent substrate, the sensor coil is located on the peripheral region of the transparent substrate and around the sensor layer. Then a signal amplitude of the electromagnetic pen is calculated and a pressure level value is calculated via a frequency of the electromagnetic pen. Next distances between the sensor coil and the electromagnetic pen are calculated to obtain the location of the electromagnetic pen. Then a pressure level compensation value is obtained from a pressure level compensation value table. Finally, a compensated pressure level value is obtained by adding the pressure level value and the pressure level compensation value.

Abstract: A coil detection circuit thereof for an electromagnetic input device including a plurality of first loop coils and second loop coils includes a first detection unit, a second detection unit and a selection unit. When the selection unit selects one the first loop coils to emit an electromagnetic signal for each one of the second loop coils, each one of the second loop coils forms a second closed loop for receiving the electromagnetic signal, and the second detection unit detects a second signal. When one of the second loop coils forms an open circuit or short circuit, the second detection unit detects an open-circuit signal or a short-circuit signal.

Abstract: A touch input system provided in the present invention includes a touch panel, a conducting coil, and an electromagnetic pen. The touch panel has a sensing area and a marginal area. The conducting coil is disposed on the touch panel. The conducting coil has a circuit with a plurality of turns wound by a conductive wire, and the circuit with the plurality of turns is located at the marginal area and surrounds the sensing area. The electromagnetic pen is utilized to transmit an electromagnetic signal to the conducting coil for performing a detection of a touch pressure. The electromagnetic pen includes a pen tip which is utilized to contact the sensing area for performing a detection of a touch position, and the pen tip is a conductor. A touch input method is further provided in the present invention.

Abstract: An electromagnetic induction panel structure includes a multilayer substrate, a first cover unit and a second cover unit. The multilayer substrate includes a first outermost lateral conductive layer and a second outermost lateral conductive layer respectively disposed on two opposite outermost surfaces thereof. The first cover unit is disposed on the first outermost lateral conductive layer. The second cover unit is disposed on the second outermost lateral conductive layer. For example, the first cover unit includes a first insulating layer directly formed on the first outermost lateral conductive layer for directly contacting the first outermost lateral conductive layer. The second cover unit includes a second insulating layer directly formed on the second outermost lateral conductive layer for directly contacting the second outermost lateral conductive layer.

Abstract: A handwriting input apparatus used with an electromagnetic pen is disclosed. The handwriting input apparatus comprises a controller, an electromagnetic antenna board, a signal processing circuit and a charging circuit. The signal processing circuit processes the electromagnetic signals received by the electromagnetic antenna board. The charging circuit used to charge the electromagnetic pen includes a first device which is used to output a first voltage to charge the electromagnetic pen after a voltage of the handwriting input apparatus being inputted. The charging circuit further includes a programmable voltage device connecting to the first device. The programmable voltage device is controlled by the controller to change the first voltage according to the detection of the first voltage by the controller.

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 pressure-sensitive pointer is disclosed. The electromagnetic pointer comprises a pen core and an oscillating circuit. The pointer core has a pointer tip. The oscillating circuit comprises a plurality of conductive terminals and a conductor. A capacitance of the oscillating circuit is increased through the contact between the conductive terminals and the conductor as a force is applied upon the pointer tip. When pointer's tip is been pressed, the pointer's frequency will have an obvious transition while its pressure-sensitivity is maintained.

Abstract: An electromagnetic pen with electromagnetic and ink writing functions is disclosed. The electromagnetic pen includes at least one pen tube assembly, a core mechanism, a pen tip, a ferrite core, a core holder, an elastic conductor and a circuit board. The pen tip and the core are configured in the pen tube assembly and are controlled by the core mechanism.

Abstract: The present invention relates to a new electromagnetic pen without a battery, and particularly relates to a new electromagnetic pen without a battery, which has two coils inside. An oscillator circuit and a resonance circuit are formed in the new electromagnetic pen respectively by the two coils. The oscillator circuit is formed for emitting electromagnetic signals to a tablet, and the resonance circuit is formed for receiving the electromagnetic energy emitted from the tablet. Therefore, unlike the conventional electromagnetic pen without a battery, which only receive the electromagnetic energy and emit the electromagnetic signals in a short period, the new electromagnetic pen of this invention can receive the electromagnetic energy emitted from the tablet continuously, so the oscillator circuit can emit the electromagnetic signals to the tablet continuously.

Abstract: A handwriting input apparatus used with an electromagnetic pen is disclosed. The handwriting input apparatus comprises a controller, an electromagnetic antenna board, a signal processing circuit and a charging circuit. The signal processing circuit processes the electromagnetic signals received by the electromagnetic antenna board. The charging circuit used to charge the electromagnetic pen includes a first device which is used to output a first voltage to charge the electromagnetic pen after a voltage of the handwriting input apparatus being inputted. The charging circuit further includes a programmable voltage device connecting to the first device. The programmable voltage device is controlled by the controller to change the first voltage according to the detection of the first voltage by the controller.

Abstract: An embodiment of the present invention provides a stylus as an inputting device of a handwriting system. The stylus comprises a jog ball, a signal emitting circuit for emitting electromagnetic waves, an resonant circuit for determining the frequencies of the emitting electromagnetic waves, and a button and ball circuit that comprises a pair of sensing units respectively arranged at up and down side of the jog ball for tracking the rolling of the jog ball.

Abstract: A handwriting device with a magnetic recharging site is disclosed. The handwriting device comprises a tablet with a magnetic recharging site and an electromagnetic pen with a magnet. The electromagnetic pen includes a coil for transmitting electromagnetic signals, a magnetic permeable material inside the coil, charging electrodes, a super capacitor or a battery and a first magnet. The tablet has a handwriting area, a pen's recharging socket, charging electrodes, a charging circuit and a second magnet. The recharging site is located adjacent the handwriting area for accommodating the electromagnetic pen, and the charging electrodes connect to the charging circuit of the tablet which can provide electrical power to the magnetic electromagnetic pen. The first and second magnets are used to mount the electromagnetic pen on the pen recharging socket through the magnetic force along a correct direction.

Abstract: The present invention relates to a multi-function electromagnetic pen, and particularly relates to an electromagnetic pen with a multi-function tail part. This electromagnetic comprises a body, a pen-tip part, and a multi-function electromagnetic ring. The pen-tip part is disposed on the front part of the electromagnetic pen and the multi-function electromagnetic ring is disposed on the tail part (or rear end part) of the electromagnetic pen. The multi-function electromagnetic ring can emit different electromagnetic signals with different frequencies. These electromagnetic signals with different frequencies are defined by a tablet to represent different functions (or modes), for example erasing function (or mode), magnifying function (or mode), and palette knife function (or mode). A user can control and change the frequency of the electromagnetic signal emitted form the multi-function electromagnetic ring by pressing the switch on the body of the electromagnetic pen.

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: The present invention discloses an electromagnetic induction handwriting system and its single side coordinate determining method for determining a coordinate of a stylus on a handwriting apparatus. The coordinate is computed by a first voltage, a second voltage, and a third voltage, where the first voltage equals the maximum detection voltage, the second voltage and the third voltage are obtained from two antennas, and both of the two antennas are arranged at the same side of the antenna that induces the maximum detection voltage.

Abstract: An electromagnetic manuscript input apparatus and a method thereof are provided for a manuscript input function. The electromagnetic manuscript input apparatus includes an electromagnetic pen and a digitizer. The digitizer includes a plurality of antennas and windings orthogonally distributed for inducing the electromagnetic waves of the electromagnetic pen. According to the electromagnetic manuscript input method, a controller of the digitizer is used to perform a whole region scanning process to find out a position of a winding having a maximum induction potential, and further find out positions of two immediately adjacent windings. An operation equation directly derived from a Gauss distribution is provided for calculating the coordinates of the electromagnetic pen on the digitizer based on the three positions and their corresponding induction potentials.

Abstract: A handwriting input device with electromagnetic power transmitting is disclosed herein and includes a micro-controller, a power transferring coil, an electromagnetic pen and a filter. The micro-controller is configured to control for the first signal producing and the power transferring coil is configured to transfer the electromagnetic power of the first signal. The electromagnetic pen is configured to receive the electromagnetic power of the first signal and transform the electromagnetic power to be the second signal to transmit. The antenna loops are configured to receive the second signal and the filter is configured to filter the noise of the second signal.

Abstract: The present invention relates to a new electromagnetic pen without a battery, and particularly relates to a new electromagnetic pen without a battery, which has two coils inside. An oscillator circuit and a resonance circuit are formed in the new electromagnetic pen respectively by the two coils. The oscillator circuit is formed for emitting electromagnetic signals to a tablet, and the resonance circuit is formed for receiving the electromagnetic energy emitted from the tablet. Therefore, unlike the conventional electromagnetic pen without a battery, which only receive the electromagnetic energy and emit the electromagnetic signals in a short period, the new electromagnetic pen of this invention can receive the electromagnetic energy emitted from the tablet continuously, so the oscillator circuit can emit the electromagnetic signals to the tablet continuously.

Abstract: The present invention relates to a multi-function electromagnetic pen, and particularly relates to an electromagnetic pen with a multi-function tail part. This electromagnetic comprises a body, a pen-tip part, and a multi-function electromagnetic ring. The pen-tip part is disposed on the front part of the electromagnetic pen and the multi-function electromagnetic ring is disposed on the tail part (or rear end part) of the electromagnetic pen. The multi-function electromagnetic ring can emit different electromagnetic signals with different frequencies. These electromagnetic signals with different frequencies are defined by a tablet to represent different functions (or modes), for example erasing function (or mode), magnifying function (or mode), and palette knife function (or mode). A user can control and change the frequency of the electromagnetic signal emitted form the multi-function electromagnetic ring by pressing the switch on the body of the electromagnetic pen.

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.