17results about How to "Improve writing experience" patented technology

The invention discloses a handwriting and screen projection picture superposition system, which is characterized by comprising a screen projection emitter, a receiving end, a writing device, a camera and a display terminal, the screen projection transmitter communicates with the receiving end through WiFi, and transmits a screen projection picture signal to the receiving end; the writing device communicates with the receiving end through Bluetooth, WiFi or a USB interface, and the sensor module is used for detecting pen starting and pen falling actions; through real-time synchronization of handwriting, screen projection pictures and camera pictures, unified output of a plurality of video sources is ensured, the interaction experience is remarkably improved, a buffer area mechanism is introduced, the problems of packet loss, delay and jitter are effectively solved, the continuity of video streams is ensured, and in addition, through a synchronization mechanism combined with timestamp information, the real-time performance of the system is improved. The real-time synchronous display of the handwriting and the video frame is ensured, the delay or dislocation phenomenon is avoided, meanwhile, an Alpha hybrid processing module is introduced, and the pixel fusion of the handwriting and the screen projection picture is realized through an algorithm to optimize the visual effect.

The utility model discloses an anti-interference infrared touch display device capable of realizing zero touch height, the infrared touch display device comprises a display device main body, an infrared emitting LED, an infrared receiving LED and a sensor, the infrared emitting LED and the infrared receiving LED are arranged on the display device main body, the infrared emitting LED and the infrared receiving LED are oppositely arranged, the sensor is arranged on the display device main body, and the sensor is arranged on the display device main body. And the sensor is fixedly mounted on the display equipment main body. (1) due to the detection of the sensor, the coordinate is generated only when the touch is really performed, so that the writing experience is improved, and the touch height of 0 is really achieved; and (2) the requirement on glass is reduced, even if the touch height of the structure is designed to be relatively high, the touch height can be zero under the condition of a sensor, and the experience feeling of a customer is not influenced. And (3) when mosquitoes stop on the surface of the glass, mistaken touch can be prevented due to the fact that the touch force of the mosquitoes is different from that of normal pen and finger touch in force or frequency.

The utility model discloses a chalk clamp which comprises an inner barrel used for installing chalk, the front end of the inner barrel is provided with an opening, the front end of the inner barrel is provided with a plurality of elastic clamping pieces, the outer side of the inner barrel is sleeved with a locking outer barrel, the locking outer barrel is arranged in a front-back moving mode relative to the inner barrel, and the front side of the locking outer barrel is provided with a conical barrel used for pressing the elastic clamping pieces. The elastic clamping pieces are provided with inclined tables matched with the conical barrels, a shifting wheel is rotationally arranged between the two elastic clamping pieces, and the shifting wheel makes contact with the surface of the chalk. When the extension length of the chalk needs to be adjusted, the locking outer barrel is firstly far away from the elastic clamping piece, so that the conical barrel is separated from the inclined table. After the chalk is separated from the elastic clamping piece, the elastic clamping piece is separated from the chalk, in the state, the chalk can stretch out forwards relative to the inner barrel, at the moment, the thumb pokes the poking wheel, the poking wheel rubs against the surface of the chalk to drive the chalk to move forwards, the stretching length of the chalk can be accurately controlled, and a user can have better writing experience when using the chalk.

The invention belongs to the technical field of electronic materials, and relates to a nanometer frosted agent, a preparation method thereof, a composition and an application of the nanometer frosted agent in a paper-like film. The nanometer frosted agent is composed of hollow TPU fiber particles and a silicon dioxide layer which grows on the outer wall of the hollow TPU fiber particles in an in-situ deposition mode. The nano frosted agent composition is prepared from nano frosted agents with different particle size ranges according to a specific proportion; the preparation method of the nano frosted agent comprises the following steps: preparing hollow TPU fiber particles, preparing a solution A containing a silicon source, adding the hollow TPU fiber particles into the solution A, reacting, and then carrying out post-treatment. According to the application, the nano frosted agent or the nano frosted agent composition is prepared into an extrusion type high-wear-resistance and high-resilience paper film. According to the invention, the comprehensive improvement of the paper-like film in four aspects of damping sense, touch sense, wear resistance and optical performance is realized.

The invention discloses an infrared touch point positioning scheme, comprising the following steps: setting the number of scanning directions k and the specific angle of each direction, setting a threshold value t1 of the number of unilaterally blocked light paths, a threshold value t2 of the number of different directions, and a threshold value t3 of the angle of light paths in different directions, performing a frame of scanning, counting the blocked light paths, and if both the X side and the Y side are blocked light paths at the moment, jumping to step S4, otherwise, if only the X side or the Y side is blocked light paths at the moment, the beneficial effects achieved by the invention include: the invention proposes a scheme idea of ​​performing point positioning only according to the X or Y unilateral light paths, and proposes a scheme idea of ​​judging whether to perform point positioning operation according to conditions such as the number of unilaterally blocked light paths and the angle between light paths with different slopes, thereby ensuring the accuracy of the final output point contour and point position, thereby reducing the probability of line breakage in fine pen writing, and at the same time being conducive to reducing the cost of the touch scheme (it can support reducing the number of lamp tubes), thereby achieving the purpose of improving the writing experience.

The embodiment of the present application provides a writing trajectory rendering method, device, writing screen device and storage medium. In the embodiment of the present application, in response to a writing start operation on a book touch screen, the screen refresh service program is controlled to suspend the refresh operation of at least two graphics card caches, and the first graphics card cache to which the first screen data currently displayed on the touch screen is written is determined; in response to a writing sliding operation on the touch screen, the first screen data in the first graphics card cache is dynamically updated using the various track point information generated during the writing sliding operation, so as to display the updated first screen data on the touch screen; in response to a writing end operation on the touch screen, the screen refresh service program is started and controlled to generate the second screen data according to the first screen data and the complete writing trajectory information generated by the writing sliding operation and write it into the first graphics card cache, so as to display the second screen data on the touch screen. Thus, the writing delay time is reduced.

The invention relates to the technical field of coatings, and provides a writing board coating which is arranged on a writing board main body and comprises a base coating and a top coating, microcrystalline cellulose-acrylate modified alkyd resin and first epoxy resin are used as film forming substances in the base coating, and the first epoxy resin and the second epoxy resin are used as film forming substances in the top coating. Acrylate and second epoxy resin are used as film-forming substances in the top-coat paint, and a titanium dioxide-zirconium dioxide-acrylate polymer is added into the top-coat paint. According to the writing board coating provided by the invention, the prime coating and the top coating are compounded, the prime coating endows the coating with excellent adhesive force, and the top coating endows the coating with an excellent self-cleaning function, so that the coating is easy to wipe, the prime coating is combined with the top coating, and the self-cleaning effect is good. The writing board coating with high durability, adhesive force and hydrophobicity can be obtained, and good writing experience is brought.

The embodiment of the present invention discloses a handwriting display method, a touch display device, a computer device and a medium. In a specific implementation, the method includes: obtaining the actual coordinates of the i-th handwriting point input by the user; obtaining the predicted coordinates of the i-th handwriting point according to the actual coordinates of the i-th handwriting point and the actual coordinates of the (i-1)-th handwriting point, wherein the distance between the predicted coordinates of the i-th handwriting point and the actual coordinates of the (i-1)-th handwriting point is greater than or equal to the distance between the actual coordinates of the i-th handwriting point and the actual coordinates of the (i-1)-th handwriting point, and the ratio of the distance between the predicted coordinates of the i-th handwriting point and the actual coordinates of the i-th handwriting point to the distance between the actual coordinates of the i-th handwriting point and the actual coordinates of the (i-1)-th handwriting point is N. i , N i ≥0; the handwriting is displayed according to the predicted coordinates of the i-th handwriting point. This implementation can improve the display delay of the handwriting and enhance the user's writing experience.

The utility model discloses a pen point pressure sensing structure and an electronic pen, and belongs to the technical field of electronic pens, and the pen point pressure sensing structure comprises a pen point assembly which extends in the first direction. The pen cap is provided with a containing space, and at least part of the pen point assembly is located in the containing space. The pressure detection device is located in the containing space and comprises a base plate and a plurality of first pressure sensors, the base plate is connected with the pen point assembly and connected with the inner wall of the pen sleeve, and the first pressure sensors are arranged on the side, facing the pen point, of the base plate and surround the pen point assembly. The first pressure sensor is used for detecting the deformation quantity of the pen point assembly acting on the substrate. The substrate deforms under the acting force of the pen point assembly, the multiple first pressure sensors are used for measuring the deformation quantity of the substrate, and therefore the stress changes of the pen point assembly in multiple directions can be obtained. Through the arrangement, the pressure measurement precision of the pressure detection device can be effectively improved, the pressure expression effect and the pen point stability can be improved, and the writing experience of a user is improved.

The invention relates to the field of art auxiliary equipment, and discloses a writing brush calligraphy auxiliary practice copying table which comprises a table top, a supporting plate is movably installed in the middle of the upper surface of the table top, a lower frame plate is fixedly installed at the top end of the supporting plate, and an upper frame plate is fixedly installed at the top end of the lower frame plate. An acrylic light-transmitting plate is fixedly connected to the top end of the upper frame plate, a manuscript display screen is fixedly installed in the middle of the supporting plate, a first pressing roller is movably installed on one side of the top end of the acrylic light-transmitting plate, and a second pressing roller is movably installed on the other side of the top end of the acrylic light-transmitting plate; the side, close to the first pressing roller, of the top end of the supporting plate is movably provided with a facsimile paper winding roller, and facsimile paper is wound around the outer diameter of the facsimile paper winding roller. The auxiliary copying device is convenient to assist copying, can reduce interference, can automatically change paper for drying, is adjustable in table top height and angle, is suitable for different people, and improves the writing experience and copying effect.

The invention relates to the technical field of stroke loss reason detection, in particular to a dot matrix pen stroke loss reason detection method and system based on a lightweight convolutional network, and the method comprises the steps: obtaining real-time writing data, importing the real-time writing data into a trained lightweight convolutional network model, carrying out the feature recognition, obtaining real-time writing features, and carrying out the recognition of the real-time writing features. The real-time writing characteristics comprise a movement track, handheld pressure and a timestamp; the real-time writing features are subjected to visualization processing, a visualization motion trail diagram corresponding to the real-time writing features is obtained, and the visualization motion trail diagram comprises the motion trail of the dot matrix pen in the writing process and the holding pressure at each writing moment; and determining a target stroke loss reason based on the visual motion trail diagram, and feeding back the target stroke loss reason. The method is convenient for improving the timeliness and accuracy of determining the stroke loss reason.

The invention relates to a rear pressure valve type mark pen which comprises a pen holder and an ink storage cavity separation cylinder. An inner cavity of the pen holder comprises a first ink storage cavity and a second ink storage cavity which are separated by an ink storage cavity separation cylinder, and the first ink storage cavity is located at the front end. The rear pressure valve type mark pen further comprises a stirring assembly and a plug. The stirring assembly is located in the first ink storage cavity. The stirring assembly is connected with the plug and is driven by the plug to stir ink. According to the mark pen, ink can be better stirred and mixed uniformly, and the mark pen is particularly suitable for propylene mark pen ink which is prone to toner sedimentation.

This utility model proposes a pen, including a writing sleeve and a pen refill. The writing sleeve consists of an upper sleeve and a lower sleeve that can move relative to each other axially. The pen refill is disposed inside the writing sleeve. The upper sleeve and / or the lower sleeve have at least one channel on their outer wall, inner wall, and / or in the middle, and the channel is filled with a filling material. Through the above structural design, while satisfying the basic function of writing, different filling materials and different types of channels can be selected to achieve different usage effects, affecting the user's visual and olfactory senses and user experience.

The invention relates to the technical field of blackboards, in particular to a multifunctional dual-purpose integrated teaching blackboard and a using method thereof.The blackboard comprises a mounting base, a driving part, a positioning part, a control part, a flexible blackboard and a flexible screen, the driving part and the positioning part are both mounted on the mounting base, and the two ends of the flexible blackboard are connected with the two ends of the flexible screen respectively to form a closed loop; the closed loop bypasses the driving part and the positioning part, the driving part can drive the closed loop to rotate, a detection part capable of detecting the front size of the flexible screen is mounted on the mounting seat, the detection part, the driving part and the flexible screen are all connected with a control part, and the control part can control the resolution of the flexible screen. According to the integrated blackboard, by rotating the closed loop formed by the flexible blackboard and the flexible screen, the proportion between the flexible blackboard and the flexible screen on the front face of the blackboard can be changed at will according to needs, even the whole front face can be the flexible blackboard or the whole front face can be the flexible screen, and a teacher can switch the flexible blackboard and the flexible screen more conveniently in the teaching process.

The utility model discloses a novel pen point structure and an electronic pen, and the novel pen point structure comprises a fixed rod, a pen point, a pen point and a pen point, the wear-resistant part is coated outside the ball head, and the wear-resistant part is used for being in contact with a screen; and the plastic part is arranged on the periphery of the wear-resistant part in a sleeving manner so as to fix the wear-resistant part. The pen point has the effects of improving the friction coefficient of the pen point and being not easy to damage a screen.