Abstract: A smart tablet, a channel switching method, and a computer readable storage medium, which are applied in the technical field of terminals are provided. The smart tablet comprises: at least two system processors, each system processor corresponding to an operating system; a switching unit, which is connected to each system processor respectively; a hub, which is connected to the switching unit; and at least two terminals, each terminal being connected to the hub. The smart tablet, the channel switching method, and the computer readable storage medium are used to solve the problem in the existing technology wherein an operating system after smart tablet switching cannot identify a USB device plugged into a USB terminal corresponding to an operating system before switching, as well as the problems of low identification efficiency and complex operations due to the foregoing problem.

Abstract: The present disclosure, applying to the technical field of interaction intelligent tablets, relates to an annotation display method, device, apparatus and a storage medium. The method comprises: receiving touch data, wherein the touch data is data of a touch point caused by an annotation event that occurs on a touch screen of an interaction intelligent tablet; and displaying an annotation handwriting using the interaction intelligent tablet, wherein the annotation handwriting is obtained according to the touch data, and is drawn on a mouse layer; wherein the mouse layer is a transparent layer and is located above a system view layer. The embodiments of the present disclosure solve the problem that the system view cannot be refreshed when the writing acceleration is performed, and at the same time realize the object of quickly displaying the annotation handwriting.

Abstract: A communication device includes an interface connector for connecting to a computing device to receive a media data and an external power supply, a transmission subsystem for transmitting the media content to a network, a battery power supply, a controller circuit powered by the battery power supply, a sensor, communicatively coupled to the controller circuit, for detecting a movement of the communication device, and a switch circuit for switchably connecting the battery power supply to the transmission subsystem responsive to a first switch control signal that is generated based on a motion detection signal generated by the controller circuit responsive to a detection of the movement by the sensor.

Abstract: A PC module assembly, comprising a PC module support, the PC module support comprising a bottom wall and a first side wall, the first side wall being provided with a first air outlet, an air inlet of a heat dissipation structure communicatively connected to the first air outlet. When mounting of a PC module, the PC module is mounted on the bottom wall, enabling the position of an air outlet of the PC module to correspond to the position of the first air outlet. When the PC module is in an operating state, hot air flow formed by the heat generated inside the PC module enters the first air outlet, and is diverted through the heat dissipation structure, so that the heat is dissipated from the inside of the PC module, thereby allowing the PC module to operate in a stable manner.

Abstract: Provided are a method, an apparatus, an electronic device, and a storage medium for displaying an expansion of a 3D shape, including: determining a 3D shape to be expanded, and acquiring a target expanded state of the 3D shape; searching a preset multi-level information relationship table for an articulation relationship set corresponding to the target expanded state; determining, according to the articulation relationship set and a preset expansion rule library, a target expansion rule for each target plane surface on the 3D shape; and controlling to expand each target plane surface at a predetermined a rate based on the each target expansion rule, and displaying the expansion process in real time. The method dynamically displays an expansion process of a 3D shape to a student, such that the student can understands more about the process of transformation from a 3D shape to a selected expanded state, thereby improving user experience of a teaching demonstration function on an electronic device.

Abstract: The present disclosure discloses an electromagnetic touch structure, a direct-backlight display module and a display. The electromagnetic touch structure includes a frame structure and an electromagnetic screen structure disposed on the rim structure; the frame structure includes a groove-shaped metal rear shell and a rim structure disposed at a peripheral edge of the metal rear shell. The electromagnetic screen structure includes a diffusion panel and an electromagnetic film which are stacked between the metal rear shell and the rim structure, and a permanent magnet structure disposed at a peripheral edge of the electromagnetic film, and the permanent magnet structure is located between the metal rear shell and the rim structure, and the electromagnetic film is disposed above or below the diffusion panel.

Abstract: A method and an apparatus for channel switching in an interactive smartboard including receiving a channel switching request to switch from a first channel to a second channel; detecting a state of a system associated with the second channel; and when the state of the system associated with the second channel is a sleep state or a dormant state, according to the channel switching request, switching a touch receiving service to the system associated with the second channel and switching a current display from the first channel to the second channel, and waking up the system associated with the second channel.

Abstract: The present disclosure discloses an electromagnetic film outlet structure, a direct-type backlight display module and a display.

Abstract: A wireless screen transmission method, an extension device, and a wireless screen transmission system are disclosed. The wireless screen transmission method includes: receiving screen display data and audio data captured by a source end device; transmitting the screen display data and the audio data to a touch screen display end over a wireless network, so that the screen display data and the audio data are presented by the touch screen display end; receiving touch data generated by the touch screen display end over the wireless network; and transmitting the touch data to the source end device, so that an operation corresponding to the touch data is performed by the source end device. The present invention further implements returning of touch data from a display end in a wireless manner based on wireless screen transmission, thereby improving flexibility and convenience of operations.

Abstract: An image erasing method and system include acquiring an erasing operation parameter value corresponding to an erasing operation behavior on an image editing interface, determining whether the erasing operation parameter value exceeds a preset parameter threshold, and if so, displaying a screen clearing button on the image editing interface, wherein an image on the image editing interface is cleared when a trigger command of the screen clearing button is received.

Abstract: A touch panel control circuit and a touch panel. The touch panel control circuit includes a touch transfer module, a main chip and a signal source interface. An input interface (A) of the touch transfer module is configured to be connected to an output interface of a touch input device to receive a first touch coordinate signal form the output interface of the touch input device. A first transmission interface of the touch transfer module is connected to a touch information transmission interface (E) of the main chip. A second transmission interface (B2) of the touch transfer module is connected to the signal source interface.

Abstract: A data transmission device includes a TypeC interface, a wireless module, a first data transformation chip and a microprocessor, wherein the TypeC interface is connected with the first data transformation chip, the first data transformation chip is connected with the TypeC interface and the microprocessor, and the microprocessor is connected with the wireless module. When the TypeC interface of the data transmission device is inserted into a user's terminal device, the data transmission device automatically obtains media data presented on the screen of the terminal device, and transmits the media data being converted and compressed, using the wireless module, to a data receiving device for presentation of the media data.

Abstract: A pluggable module identification system, including: a detection device and a plurality of pluggable modules with surfaces thereof being conductors, where the detection device includes a receptor slot, a grounding assembly is provided on an inner side surface of the receptor slot at a location close to an insertion opening of the receptor slot, a detection assembly is provided on the inner side surface of the receptor slot at location close to a bottom of the receptor slot, the grounding assembly is grounded, and the detection assembly is connected to a main board.

Abstract: A device includes a loudspeaker body, a loudspeaker fastener structure, and a loudspeaker shock absorption structure, in which the loudspeaker absorption structure further comprises a first elastomer, a second elastomer, and a bridging beam, wherein the bridging beam is made of an elastic material, and the first elastomer is connected to the second elastomer by the bridging beam.

Abstract: A communication device includes USB Type-C (USB-C) port to receive a media data presented at a user computing device, a signal converter circuit to convert the media data into a formatted media data, a hardware processor, communicatively coupled to the signal converter and the USB-C port, to compress, according to an encoding scheme, the formatted media data into a compressed media data stream, and a wireless transmission interface to transmit, using a wireless network, the compressed media data stream to a large-format display device for presentation of the media data.

Abstract: Provided are a method, a device and a system for manipulating presentation content of screen transmission. The method includes: receiving play start information for presentation content at a screen transmission source end transmitted by a corresponding screen transmission hardware, and starting a preset play manipulation mode at a screen transmission presentation end (S11); detecting a preset touch operation signal in the play manipulation mode, and obtaining a preset play control instruction corresponding to the touch operation signal (S12); and controlling, according to the play control instruction, the presentation content at the screen transmission presentation end to enter a corresponding play state (S13). Based on this, it is possible to implement manipulation of the presentation content on a large touch screen, facilitate users' operations, and advantageously improve the user experience.

Abstract: The present utility model relates to a loudspeaker, in particular to a loudspeaker and a loudspeaker shock absorption structure, which comprise a first elastomer for connecting with a loudspeaker body and a second elastomer for connecting with a loudspeaker fastener structure, the first elastomer and the second elastomer are connected by a cantilever, the cantilever is made of an elastic material. The present utility model forms a non-coaxial connection structure between the loudspeaker body and the loudspeaker fastener structure by setting a cantilever, so that a force produced by a vibration of the loudspeaker body cannot be directly transmitted to the loudspeaker fastener structure. Instead, the force is acted on the fastener structure in the form of a small force after being weakened by buffering and filtering via the cantilever, thereby greatly reducing a machine vibration caused by a large amplitude of the loudspeaker.

Abstract: A method and system for writing trajectory synchronization among multiple clients are disclosed. The method includes: receiving (S10) segmented writing trajectory data of a real-time writing trajectory transmitted in segments by each transmitting end; forwarding (S20) each segment of the segmented writing trajectory data to each receiving end in real time respectively, where the segmented writing trajectory data is received asynchronously and restored into a real-time writing trajectory by each receiving end; receiving (S30) complete writing trajectory data of a complete writing input transmitted by each transmitting end; and forwarding (S40) the complete writing trajectory data transmitted by each transmitting end to each receiving end, where the complete writing trajectory data is received synchronously and inserted into an interface for display by each receiving end.

Abstract: An interactive device stylus includes a stylus body, a stylus cap disposed at a front end of the stylus body, and a stylus head disposed on the stylus cap. The stylus head is fixed to a front end of the stylus cap via a connecting piece, a through-hole is provided in the connecting piece, and the inner diameter of the through-hole gradually decreases from the inside of the connecting piece to a free end of the connecting piece, so that a limiting portion is formed at the free end of the connecting piece. The stylus head is engaged in the connecting piece via the limiting portion. A fixing rod is provided in the stylus cap, and an end of the fixing rod is pressed against the stylus head.

Abstract: A device includes a loudspeaker body, a loudspeaker fastener structure, and a loudspeaker shock absorption structure, the loudspeaker absorption structure including a first elastomer, a second elastomer, and a bridging beam, wherein the first elastomer is connected to the second elastomer by the bridging beam, the first elastomer is connected with the loudspeaker body, the first elastomer is configured with an annular groove, the loudspeaker body is configured with a snap ring matching the annular groove, and the snap ring is clamped with the annular groove, wherein the second elastomer is connected with the loudspeaker fastener structure, the second elastomer is configured with a through hole, the loudspeaker fastener structure is configured with a connecting post matching the through hole, and the connecting post passes through the through hole of the second elastomer, and wherein the bridging beam is configured with a first opening and a second opening.