Provided is an electronic pen with a cylindrical housing including an opening at an end portion of the housing on a pen tip side of the housing, a cylindrical member disposed in the housing and fixed to the housing at a part on the pen tip side of the housing, and a core body formed in a rod shape by a material containing a pigment, the core body including a body portion inserted into the cylindrical member through the opening of the housing and a pull-out portion configured to enable the core body to be pulled out of the housing. A diameter of the body portion of the core body inserted into the cylindrical member is larger than a difference between an outer diameter of the cylindrical member and an inner diameter of the cylindrical member.

A virtual and augmented reality instruction system may include a complete format and a portable format. The complete format may include a board system to capture all movement (including writing and erasing) on the board's surface, and a tracking system to capture all physical movements. The portable format may include a touch-enabled device or digital pen and a microphone, and is designed to capture a subset of the data captured by the complete format. In one embodiment of the complete format, the board system and the tracking system can communicate with each other through a network, and control devices (such as a laptop, desktop, mobile phone and tablet) can be used to control the board system and tracking system through the network. In further embodiments of the complete format, augmented reality can be achieved within the tracking system through the combination of 3D sensors and see through augmented reality glasses.

A voice-controlled electronic device that includes a device housing having a longitudinal axis bisecting opposing top and bottom surfaces and a side surface extending between the top and bottom surfaces. The device can further include one or more microphones disposed within the device housing and distributed radially around the longitudinal axis; a processor configured to execute computer instructions stored in a computer-readable memory for interacting with a user and processing voice commands received by the one or more microphones and first transducer and second transducers configured to generate sound waves within different frequency ranges.

This application provides a display method and a device and relates to the field of communications technologies, so as to display different content on a terminal and an external display apparatus. A specific solution includes: displaying, by the terminal, a first screen, and instructing the external display apparatus to display a first desktop including a first application but not including a second application, where the first screen is different from the first desktop; and displaying, by the terminal in response to a first input of a user on the first screen, a second screen including the first application and the second application on the terminal, and instructing the external display apparatus to display a second desktop including the first application and the second application.

An electronic shelf label that comprises: a display unit that is arranged to display an image, and an interaction interface which is arranged separate from the display unit, wherein the interaction interface is realized as touch sensitive unit that provides a touch-triggered signal, and a processing unit that is connected to the touch sensitive unit and is arranged to process the touch-triggered signal.

The present invention provides a dot film, a multi-layers optic sheet comprising the dot film, and a smart electric board having the multi-layers optic sheet attached thereto, the dot film comprising: a base layer made of a synthetic resin; a resin layer coated with a resin mixture on the rear surface of the base layer; and a dot layer on which fine dots are formed by printing such that a printing material permeates the resin layer, wherein the dot layer has a plurality of dots formed therewith which are spaced apart from each other at crossing points of virtual grid lines, and has location information encrypted therein so as to determine location information of an electronic pen when writing with the electronic pen. According to the present invention, the optic sheet has a thinned thickness, a minimized possibility of an inflow of particles between layers in the production process, and a low reflectance and scattering rate, and thus has an excellent reactivity and recognition rate for the electronic pen, and UV printing is possible as well as the printing of inkjet and laser printers etc., the production cost thereof is low, and there is an effect of easily permeating and printing printed material.

An e-pen includes e-pen sensor electrodes (including a first and a second e-pen sensor electrode) and drive-sense circuits (DSCs) (including a first DSC and a second DSC. The first DSC drives a first e-pen signal having a first frequency via a first single line coupling to the first e-pen sensor electrode and simultaneously senses, via the first single line, the first e-pen signal. Based on e-pen/touch sensor device interaction, the first e-pen signal is coupled into at least one touch sensor electrode of the touch sensor device. The first DSC process the first e-pen signal to generate a first digital signal representative of a first electrical characteristic of the first e-pen sensor electrode. Similarly, the second DSC drives a second e-pen signal having a second frequency via a second single line coupling to the second e-pen sensor electrode and simultaneously senses, via the second single line, the second e-pen signal.

The present invention provides a signal processing circuit including a control unit, a transmission drive unit, an analog switch array, a signal amplification unit, a detection integration unit that are connected in sequence, and a transceiver antenna connected to the analog switch array. The control unit includes an analog-to-digital converter. The signal processing circuit further includes a level conversion unit arranged between the analog-to-digital converter and the signal amplification unit, the level conversion unit is configured to linearly convert signals received by the transceiver antenna, and transmit the linearly converted signals to the analog-to-digital converter. The signal processing circuit has advantages of low cost, fast handwriting speed, and less cursor wobble. The present invention also provides a position detecting device using the same.

Contactless operation of a medical device, such as a hemodialysis (HD) or peritoneal dialysis (PD) device, is provided via a mobile pointing apparatus and a receiving arrangement associated with the medical device. The mobile pointing apparatus includes a signal emitter for emitting an optical or electromagnetic signal, and the receiving arrangement associated with the medical device determines a pointing target of the mobile pointing apparatus relative to the medical device based on the signal emitted by the mobile pointing apparatus and triggers a function of the device based on the pointing target of the mobile pointing apparatus.

The utility model provides an electromagnetic stylus having a tip, a first magnetic core, a second magnetic core and a cartridge. The tip includes a nib arranged at an end portion thereof. The first magnetic core has a first through hole. The second magnetic core is arranged on a distal end of the first magnetic core from the nib, having a second through hole. An inner diameter of the second through hole is less than an inner diameter of the first through hole, the tip sequentially penetrates through the first through hole and the second through hole. A step structure is arranged on a proximal end of the second magnetic core to the nib. A spacer is arranged on an inner wall of the cartridge, the first magnetic core and the second magnetic core are at least partially received in the cartridge and respectively positioned on two sides of the spacer, the step structure abuts against the spacer, a thickness of the step structure is less than a thickness of the spacer along a lengthwise direction of the tip.