165 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.

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.

Disclosed are a touch-sensing system, a display device, an active pen, and a pen recognition method which can perform rapid and accurate pen recognition as the active pen provides pen identification information to the display device through a predetermined path, and which can also simultaneously process pen inputs through many active pens by distinguishably recognizing the many pens.

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.

A sensor controller is connected to a sensor electrode to detect positions of one or more active pens depending on charge induced on the sensor electrode. The sensor controller includes a processor; and a memory coupled to the processor, the memory storing instructions that, when executed by the processor, cause the sensor controller to: detect that one or more active pens is approaching the sensor electrode using the sensor electrode; pair with the detected one or more active pens and update pairing state information indicative of a pairing state of each of the one or more active pens paired with the sensor controller; and broadcast the pairing state information from the sensor electrode to the one or more active pens via an uplink signal that is a reference for time synchronization.

Disclosed are a touch-sensing system, a display device, an active pen, and a pen recognition method which can perform rapid and accurate pen recognition as the active pen provides pen identification information to the display device through a predetermined path, and which can also simultaneously process pen inputs through many active pens by distinguishably recognizing the many pens.

The invention discloses an electromagnetic handwriting input device and an electromagnetic handwriting input method, which are used for providing a handwriting input function. The electromagnetic handwriting input device comprises an electromagnetic pen and a digitizer, wherein the electromagnetic pen comprises a coil, a capacitor and a circuit board, can emit electromagnetic waves and is either an active pen-like input device with a power supply or a passive pen-like input device without the power supply; and the digitizer is provided with a plurality of antennae or coils arranged orthogonally for inducing the electromagnetic waves of the electromagnetic pen. The electromagnetic handwriting input method comprises the following steps: firstly, utilizing a controller of the digitizer to perform global scan so as to find out a coil position with a maximum induced potential and to find out two adjacent coil positions; performing optimal approximation by a Gaussian distribution function toobtain an accurate coordinate algorithm; and then calculating an accurate coordinate value of the electromagnetic pen with an inclined angle on the digitizer via the operation of a hardware circuit or the operation of a software program.

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.

Some embodiments of the present application provide a signal transmitting and receiving method, a processor chip, an active pen, and a touch screen. The signal transmission method includes: obtainingcharacterizing pressure information and a code for detecting the position of the pen tip according to the detected pressure information, wherein the encoding includes n encoding bits, where n is an integer greater than 1 (101); generating n coded signals (102) corresponding to n coded bits; transmitting each coded signal of the n coded signals at a preset first frequency, a preset second frequency, or a transmission prohibited manner, wherein the first frequency, the second frequency of the n coded signals, and the prohibited transmission are related to pressure information (103); with the above solution, the active pen can output more coordinates of the nib position in unit time, and the touch screen can detect more coordinates of the nib position in unit time, which improves the reporting rate.

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 provides a coding circuit and a coding method of an active capacitance pen. The coding circuit comprises a signal source output circuit, an LC resonance circuit, a NOT gate circuit or inverter and a signal spring. The signal source output circuit outputs a positive amplitude U + signal to the LC resonance circuit. At the same time, the signal source output circuit outputs a negativeamplitude U-signal to the LC resonant circuit through a NOT circuit or an inverter. The LC resonance circuit is connected with a signal spring of the active capacitance pen. By adopting the technicalscheme, the power consumption of the active pen can be reduced under the condition of improving the coding amplitude, the circuit structure is simple, the implementation is convenient, the reliabilityis high, and the conditions of disconnection and even occasional incapability of writing during writing are greatly reduced; and the consistency of products in the production process is easy to control, and the cost is low.

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 present application relates to the field of signal processing technologies, and provides a signal transmitting method, an active pen, a signal receiving method, and a touch screen. The image signal transmission method comprises: separately performing amplitude modulation on the n binary codes representing the information to be transmitted, to obtain n sequentially arranged coded amplitude modulation signals, where n is an integer greater than 1; and sequentially arranging the n coded amplitude modulation signals continuously And transmitting, wherein the coded amplitude modulation signal with the odd number is transmitted at a preset first frequency, and the coded amplitude modulation signal with the even number is arranged to be transmitted at the preset second frequency. In the present application, n coded amplitude modulation signals are continuously transmitted alternately at the first frequency and the second frequency, thereby eliminating the fault tolerance time between therespective coded amplitude modulation signals and reducing the transmission time of the same number of coded amplitude modulation signals, correspondingly The time required for the screen end to complete the detection of the amplitude modulation signal is reduced, thereby improving the reporting rate and improving the anti-interference ability of the touch screen.

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 invention relates to the technical field of electronic information. Disclosed are a signal transmitting method, a signal parsing method, an active pen and a touch screen. In the present invention, the signal transmitting method comprises: the active pen performing frequency modulation on information to be delivered to generate a frequency-modulated signal of the information to be delivered; and the active pen transmitting the frequency-modulated signal of the information to be delivered. Also provided are a signal parsing method, an active pen and a touch screen. The signal transmitting method, the signal parsing method, the active pen and the touch screen provided in the present invention greatly improve the refresh rate and solve the problem that the timing sequence of signaltransmission of the active pen and screen terminal detection is complex, and information delivery is time-consuming.

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.

A pointer position detection method performed by a sensor controller connected to a sensor pattern includes: detecting a pen signal transmitted via a pen electrode provided at a distal end of an active pen, detecting a position of the active pen based on a level of the pen signal detected; detecting one or more candidate touch positions of a passive pointer that does not transmit a signal by detecting one or more changes of one or more capacitances of the sensor pattern, and outputting, as the position of the passive pointer, the one or more candidate touch positions remaining after excluding the position of the active pen from the one or more candidate touch positions.

The invention relates to the technical field of touch control, and discloses an active touch control pen and a man-machine interaction device. The active touch control pen comprises a pen body, comprising an active pen core and a pen case surrounding the pen core, wherein a clamping member is arranged between the pen core and the pen case, and the pen core can do deflection movement with the clamping member as a fulcrum when the pen core is forced; a light emitter fixed on the tail of the pen cartridge, the luminous surface being arranged away from the pen cartridge; an optical signal sensingunit located on the rear side of the pen core and capable of sensing a light beam emitted from the light emitter and outputting information on the coordinates of the position where the light beam is irradiated; a micro-control unit connected with the optical signal sensing unit, and used for generating a corresponding driving signal according to the position coordinate information outputted from the optical signal sensing unit, and sending the driving signal to the touch screen through the pen core. Users can control the touch function by changing the pressing force and / or the holding postureof the active stylus, so as to meet more touch requirements and improve the application experience of the stylus.

The invention provides a touch panel and a manufacturing method therefor as well as a touch apparatus. The touch panel comprises a substrate, as well as a plurality of touch electrodes and a plurality of active pen electrodes, that are arranged on the substrate, wherein the size of each active pen electrode is smaller than that of each touch electrode; the touch electrode is used for determining a touch position of a finger; and the active pen electrode is used for determining a touch position of an active pen. According to the touch panel, the manufacturing method for the touch panel, and the touch apparatus, the active pen electrodes are separately arranged as receiving electrodes of the active pen; the size of each active pen electrode is smaller than that of each touch electrode, so that RC loading of the active pen electrodes is very small relative to the touch electrodes; and therefore, signal attenuation of the active pen can be reduced and the touch of the active pen is more sensitive.

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.

The invention provides a writing and locating method of an active pen. In the method, firstly, when the active pen touches a screen, an image acquisition unit shoots and acquires an image on that the active pen touches the screen; secondly, an image binary processing unit carries out binarization processing on the image obtained in the first step, and related coordinates of the image are extracted; thirdly, an image edge processing unit extracts the image edge outline of the image which is processed in the second step; fourthly, a curvature processing module calculates the curvature of each point of the image edge outline which is obtained in the third step; fifthly, the curvature processing module works out the coordinates of the starting position of the active pen according to the curvature obtained in the fourth step; and sixthly, the coordinates obtained in the fifth step are displayed through a display device of a control computer. In the invention, different methods for finding the center of gravity are selected through judging the magnitude of the difference value of the curvature among all the points, and no matter whether the plane in which a user holds the pen is vertical to a writing plane or not, a display position can be automatically corrected to be the position that the user starts from to write with the 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 discloses an active pen communication method and device, a terminal and a storage medium, and the method comprises the steps: obtaining representation pressure information and a code fornib detection according to the pressure information when the pressure information is detected through a pressure sensor, wherein the code comprises n code bits; generating n coding signals corresponding to the n coding bits according to different pressures borne by a pressure sensor; and sending the n coding signals to a touch screen according to the same frequency. The pressure is expressed in adigital coding form, and meanwhile, the coding signals are transmitted by adopting the same frequency, so that in the transmission process, the same-frequency interference is avoided, and the normalwriting is ensured.