163 results about "Active pen" patented technology

The present invention relates to a system, method and medium for receiving and acting upon user input. In one embodiment, the user may only have access to a limited input device, like a stylus. Using the present invention, a user is provided with intuitive responses from the system based on inputs from the limited input device.

Embodiments described herein is able to provide a touch display device, an active pen, a touch system, a touch circuit, and a pen recognition method capable of efficiently providing a display function, a touch-sensing function, and a pen-touch-sensing function.

The invention discloses an active pen for a touch module, a touch input system and a driving method of the active pen. The active pen comprises a gravity induction part, an amplifying circuit connected with an output end of the gravity induction part and a signal emission part arranged at a nib of the active pen and connected with an output end of the amplifying circuit, wherein the gravity induction part is used for outputting a corresponding gravity induction output signal according to an included angle between the active pen and the horizontal plane; the amplifying circuit is used for amplifying the gravity induction output signal at corresponding multiple; and the signal emission part is used for sending the amplified signal to the touch module. According to the invention, based on the principle of gravity induction, the change of signal output can be realized through changing the included angle between the active pen and the horizontal plane, namely, the output signal is changed along with the change of the tilt angle of the active pen, so as to provide handwritings at different degrees of thickness and realize difference of line width; in addition, the nib of the active pen can be made of materials without any requirement, thereby lowering the cost.

The invention discloses a touch screen, an active pen, an active pen touch-control system and a relevant driving method. The touch screen comprises touch-control electrodes, auxiliary electrodes and a driving chip, wherein the auxiliary electrodes and the driving chip are positioned among the touch-control electrodes; and the driving chip detects capacitance value changes of the touch-control electrodes according to a touch-control driving signal received by the touch-control electrodes at a touch-control stage of the active pen to judge a touch-control position, and decodes an encoding signal received by the auxiliary electrodes to determine a pressure magnitude. The active pen comprises an active pen body, a pressure sensor for detecting the pressure magnitude and generating an encoding signal, an encoding signal transmission unit for transmitting the encoding signal through a pen hoop of the body, a coordinate driving transmission unit for transmitting a touch-control driving signal through a pen point of the body, and a phase-locking synchronizing unit for controlling the coordinate driving transmission unit and the encoding signal transmission unit to transmit signals simultaneously. The encoding signal and the touch-control driving signal are transmitted and received simultaneously, so that the time of a touch-control stage of the active pen can be shortened.

The invention relates to an electronic-whiteboard active pen and touch input system and a driving method. A microcontroller is arranged in the active pen; the electronic-whiteboard active pen comprises a key switch module, an amplifying circuit module and a high-voltage boosting module, and further comprises a pressure sensor nodule and a pen point module; the pen point module is used for transmitting a high-voltage driving signal treated by the high-voltage boosting module, the amplifying circuit module is used for amplifying a pressure signal collected by the pressure sensor module, and the key switch module is used for achieving the opening function and the closing function of a key. According to the electronic-whiteboard active pen and touch input system and the driving method, changes of the output of the pressure signal quantity are achieved by changing the deformation quantity of the active pen acting on an electronic whiteboard, real brushwork and lines are simulated according to the pressure signal, the active pen can sense changes of writing force of a user, and therefore the thickness of handwriting can be changed according to the changes of the writing force; a key-switch stage signal is sent by pressing a key switch on the active pen, free switching of the color of the writing handwriting is further achieved, and the human-computer interaction effect is good.

The invention provides an active stylus, a touch input system and a driving method thereof. The active touch pen comprises a pen tip and a pen body, wherein a control unit and a signal providing unitare arranged in the pen body; The control unit is used for detecting the detection parameter value corresponding to the tilt angle of the pen body, and adjusting the signal quantity of the output signal supplied from the signal providing unit according to the detection parameter value. An input terminal of the signal supply unit is connected to an output terminal of the control unit for supplyingan output signal through a pen tip. The invention simplifies the control and use process of the active stylus by setting the control unit to detect the detection parameter value corresponding to the tilt angle of the active stylus and adjusting the signal quantity of the output signal according to the detected detection parameter value, and improves the convenience of use. At the same time, the cost and the power consumption can be reduced compared with the existing active pen using the pressure sensor.

The invention provides a signal processing method of an active pen, an active pen and a touch control screen. The method comprises the steps of performing undersampling on received excitation signals of an active pen by using a preset sampling rate, acquiring digital signals of the excitation signals of the active pen, and demodulating the digital signals of the excitation signals of the active pen to obtain demodulation signals; calculating touch control coordinates according to the amplitudes and the phase positions of the demodulation signals and outputting the touch control coordinates. The method can improve the signal processing precision of active pens and increase a signal to noise ratio.

The invention discloses a stylus mode switching method and device, a stylus and a readable storage medium, and the method comprises the steps: enabling the stylus to work in a universal stylus mode when an awakening signal is received; in the universal pen mode, collecting screen end coding signal frequency information; judging whether the screen end coding signal frequency information is matchedwith active pen protocol frequency characteristics in a preset active pen protocol library; and if matching succeeds, switching to the successfully matched active pen protocol. The stylus works in a universal stylus mode so that a user can normally use the stylus. And meanwhile, a screen end coding signal is obtained to judge whether switching to a preset active pen protocol can be carried out, ifmatching succeeds, switching of the active pen protocol is carried out, the universal pen and the active pen are integrated in the same touch pen, and good compatibility is achieved for different touch devices.

The application provides a pressure detection method, which can be used for preventing the delayed display of the writing pressure of the active pen on the screen. This method is used to detect the pressure generated by the active pen above the screen. The active pen includes a first electrode, a second electrode and a pressure sensor. The first electrode is used to output a first coding signal, and the second electrode is used to output a second coding signal when the pressure sensor detects the first pressure generated by the active pen. The first detection signal corresponding to the firstcoding signal is used to determine the position of the active pen on the screen. The second detection signal corresponding to the second coding signal is used to calibrate the position. The method includes the following steps: when the information of the first pressure is not received, whether the active pen presses the screen is determined according to the second detection signal; if it is determined that the active pen presses the screen, the handwriting of the active pen is displayed through the screen according to the second pressure, and the second pressure is the preset pressure.

A touch-control method for a liquid crystal display device, includes: switching from a display mode to a touch-control mode; determining whether there is a touch made by an object or whether there is an input made by an active pen; in the case where there is the input made by the active pen, starting an active pen detecting sub-mode in which an X-axis direction common electrode of the liquid crystal display device is defined as an X-axis direction receiving electrode, and a Y-axis direction common electrode or a signal electrode is defined as a Y-axis direction receiving electrode; and determining a position or an action of the active pen according to amplitudes of signals of the X-axis direction receiving electrode and the Y-axis direction receiving electrode. A touch-controllable liquid crystal display device is further provided.

The present disclosure provides a touch driving circuit, a touch display device, and a pen data recognition method by a touch circuit, and the touch circuit supplies a touch driving signal to two or more touch electrodes from among the plurality of touch electrodes in a pen data mode, generates sensing data for recognizing pen data which is transmitted from an active pen via the two or more touch electrodes in response to the touch driving signal, and performs range conversion and merger of two or more pieces of sensing data generated by detecting the pen data of same bit value, so as to generate summation sensing data.

Active position indicator comprising a movable tip element (10) configured to be displaced from an initial position in a displacement direction by a tip displacement depending on the force acting on a tip (3) arranged on a distal end of the tip element (10); a position signal circuit connected with said movable tip element (10) and configured to generate an indicator position signal to be applied on the tip (3); and a force sensor for detecting a force acting on the tip comprising a capacitive element with a capacitance value depending on the tip displacement for generating an electric feedback signal indicating the tip displacement; wherein the capacitive element comprises a capacitor distance depending on the tip displacement and a capacitor surface depending on the tip displacement.

The invention relates to an electronic inputting and displaying method, in particular to a method for positioning and displaying writing of an active pen. The method comprises the following steps of: S10 extracting a light spot image of the active pen and binarizing the light spot image to obtain a target image; S20 calculating by using an SUSAN operator to obtain a first stroke coordinate of the active pen; S30 converting the first stroke coordinate to a screen displaying position coordinate and sending to a computer; and S40 controlling a projector to display the writing track of the active pen by using a computer according to the displaying position coordinate. The method in the invention overcomes the defect that the contact position of the active pen is inconsistent with the screen displaying position. Furthermore, the invention also discloses a positioning and displaying device of the active pen.

An electronic apparatus includes a display unit that displays information, a capacitive touch panel layer that transmits display of the display unit, and detects coordinates indicated by an indicator separated from a surface in a predetermined distance, a glass that protects the touch panel layer, and transmits the display of the display unit, a pressure sensor that detects distortion of the glass, and a control unit that validates and invalidates the coordinates detected by the touch panel layer. The control unit validates the coordinates detected by the touch panel layer in a case where the indicator is an active pen, and validates the coordinates most recently detected by the touch panel layer, when a predetermined amount of distortion is detected by the pressure sensor, in a case where the indicator is other than an active pen.

The invention provides a dynamic calibration method for a water outlet reference of an active pen, the active pen and electronic equipment. The dynamic calibration method comprises the following steps: establishing signal communication between the active pen and a touch screen; detecting an output signal emitted by the active pen, recording a change value of the output signal along with time, andwhen a change curve of the output signal along with time has a first change region, a second change region, a third change region and a fourth change region, sending a calibration instruction of a water outlet reference to calibrate the water outlet reference; wherein the first change area is a normal writing signal area; the average value of the output signals of the second change area is smallerthan the minimum value of the writing signals of the first change area; wherein the reduction rate of the third change region is smaller than that of the second change region; wherein the reduction rate of the fourth change region is smaller than that of the third change region. By the adoption of the technical scheme, the accuracy of calibration of the water outlet reference of the active pen isimproved, and the active ratio has better reliability and user experience.