CN202018649U - Electronic whiteboard with file transfer via wireless interface - Google Patents

Abstract

The utility model relates to an electronic whiteboard capable of transmitting files through a wireless interface, which comprises an induction unit, a signal processing unit, a control unit, a display unit and a wireless transmission unit. The sensing unit generates a sensing signal according to the track or position of the contact object, and the signal processing unit processes the sensing signal and generates a track signal. The control unit processes and converts the track signal into a driving signal and data which can be stored or output. And the display unit synchronously displays the track or the position of the contact object according to the driving signal. The wireless transmission unit transmits the data to a mobile device.

Description

Electronic whiteboard with file transfer via wireless interface

technical field

The utility model relates to an electronic whiteboard, in particular to an electronic whiteboard capable of transmitting files through a wireless interface.

Background technique

Interactive electronic whiteboards have been widely used in various conferences, seminars and school teaching for briefing, explanation and teaching. The existing conventional electronic whiteboard operation method for recording data is to scan the written page by a scanning device (Scanner) for subsequent image processing and output through a mechanism transmission mode. In addition, users usually keep the written files by printing. With the prevalence and widespread use of handheld devices such as mobile phones, notebook computers or tablet computers, especially handheld devices are equipped with wireless transmission components or functions, if the electronic whiteboard is equipped with wireless transmission functions, as long as the user The file of the meeting minutes can be transmitted through the wireless interface in real time, achieving paperless meeting minutes, which has the benefits of environmental protection and energy saving. Therefore, an electronic whiteboard capable of transmitting files through a wireless interface can meet the user's demand for downloading data written on the electronic whiteboard with a handheld device.

In view of the defects of the above-mentioned existing electronic whiteboards, the inventor, based on his rich practical experience and professional knowledge in the design and manufacture of such products for many years, and in conjunction with the application of academic theories, actively researched and innovated, in order to create a new type of electronic whiteboard. The electronic whiteboard that can transmit files through the wireless interface can improve the general existing electronic whiteboard and make it more practical. Through continuous research, design, and after repeated trial samples and improvements, the utility model with practical value is finally created.

Contents of the invention

The purpose of this utility model is to overcome the existing defects of the existing electronic whiteboard, and provide an electronic whiteboard with a new structure that can transmit files through a wireless interface. The technical problem to be solved is to enable users to use whiteboard markers or whiteboard erasers. The writing or erasing track generated on the electronic whiteboard can be displayed on the display screen in real time and the generated data can also be processed in real time and output in real time through wireless transmission, and can also be stored in the memory card through the memory card slot, so it can be greatly improved. Improve the convenience of electronic whiteboard use.

The purpose of this utility model and the solution to its technical problems are achieved by adopting the following technical solutions. According to the utility model, an electronic whiteboard capable of transmitting files through a wireless interface includes: an induction unit, which generates an induction signal according to the trajectory or position of a contact object; a signal processing unit, which processes the induction signal. signal and generate a track signal; a control unit, which processes and converts the track signal into a drive signal and data that can be stored or output; a display unit, which synchronously displays the track or track of the contact object according to the drive signal location; and a wireless transmission unit that transmits the data to a mobile device.

The purpose of the utility model and the solution to its technical problems can also be further realized by adopting the following technical measures.

In the aforementioned electronic whiteboard, the sensing board includes an electromagnetic sensing board, a capacitive sensing board or a resistive sensing board.

In the above-mentioned electronic whiteboard, the contact object includes an electromagnetic whiteboard marker and an electromagnetic whiteboard eraser.

The aforementioned electronic whiteboard further includes a memory.

The aforementioned electronic whiteboard, wherein said internal memory includes a multimedia memory card (MMC) and an SD memory card (SD Card).

The aforementioned electronic whiteboard further includes an input/output interface for outputting the data to an external device.

In the aforementioned electronic whiteboard, the external device includes a computer, a printer, a flash drive or a mobile hard disk.

In the aforementioned electronic whiteboard, the input/output interface includes a Universal Serial Bus.

In the aforementioned electronic whiteboard, the file formats of the data include Portable Document Format (PDF), Bitmap (BMP) and JPEG formats.

In the aforementioned electronic whiteboard, the wireless transmission unit includes a wireless transmission device or module using Bluetooth, IEEE802.11 or Wi-fi, wireless Universal Serial Bus and Zeebe technology.

The aforementioned electronic whiteboard further includes a power control unit.

In the aforementioned electronic whiteboard, the display device includes a liquid crystal display screen.

In the aforementioned electronic whiteboard, the mobile device includes a mobile phone, a notebook computer or a tablet computer.

Compared with the prior art, the utility model has obvious advantages and beneficial effects. By virtue of the above technical solutions, the utility model provides an electronic whiteboard capable of transmitting files through a wireless interface, including a sensing unit, a signal processing unit, a control unit, a display unit and a wireless transmission unit. The sensing unit generates a sensing signal according to the track or position of the contact object, and the signal processing unit processes the sensing signal and generates a track signal. The control unit processes and converts the track signal into a drive signal and data that can be stored or output. The display unit synchronously displays the track or position of the contact object according to the driving signal. The wireless transmission unit transmits the data to a mobile device. It can achieve considerable technical progress and practicality, and has wide industrial application value. It has at least the following advantages: it discloses an electronic whiteboard that can process handwriting values in real time and transmit files through wireless interfaces. Users can use whiteboard markers or whiteboard erasers to The writing or erasing tracks generated on the electronic whiteboard can be displayed on the display screen in real time, and the generated data can also be processed in real time and output in real time through wireless transmission, and can also be stored in the memory card through the memory card slot, so it can be greatly improved. The convenience of electronic whiteboard use.

The above description is only an overview of the technical solution of the utility model. In order to understand the technical means of the utility model more clearly, it can be implemented according to the contents of the specification, and in order to make the above and other purposes, features and advantages of the utility model better It is obvious and easy to understand. The preferred embodiments are specifically cited below, together with the accompanying drawings, and detailed descriptions are as follows.

Description of drawings

Fig. 1 shows a front view of an electronic whiteboard according to an embodiment of the present invention.

FIG. 2 shows a functional structure diagram of an electronic whiteboard according to an embodiment of the present invention.

3A to 3D respectively show the user interface of the display screen of the control device of the electronic whiteboard according to an embodiment of the present invention.

100: Electronic whiteboard 102: Control device

104: writing board 106: slot for whiteboard eraser

108: Whiteboard marker placement slot 200: Electronic whiteboard

201: Mobile device 203: External device

202: Control unit 204: Display unit

206: Memory 208: Signal processing unit

210: Induction unit 212: Power control unit

214: I/O interface 216: Wireless transmission unit

302: display screen 304: select button

306: Power switch 308: Print key

Detailed ways

In order to further explain the technical means and effects adopted by the utility model to achieve the intended purpose of the invention, the specific implementation of the electronic whiteboard that can transmit files through the wireless interface proposed according to the utility model is described below in conjunction with the accompanying drawings and preferred embodiments. , structure, feature and effect thereof, detailed description is as follows.

Various embodiments of the present application will be described in detail below, and the accompanying drawings are used as examples. In addition to these detailed descriptions, the present invention can also be widely implemented in other embodiments, any easy replacement, modification, and equivalent changes of any of the embodiments are included in the scope of the present case, and the following patent scope is allow. In the description of the specification, many specific details are provided in order to enable readers to have a more complete understanding of the present invention; however, the present invention may still be implemented under the premise of omitting some or all of these specific details. Furthermore, well known procedural steps or components have not been described in detail in order to avoid unnecessarily limiting the present invention.

FIG. 1 shows an electronic whiteboard according to an embodiment of the present invention. As shown in FIG. 1 , the electronic whiteboard 100 of the present invention includes a control device 102 , a writing board 104 , a whiteboard eraser slot 106 and a whiteboard marker slot 108 . The electronic whiteboard 100 includes an interactive electronic whiteboard, which is used together with a whiteboard marker and a whiteboard eraser. The control device 102 includes components such as a control component, a signal processing circuit, a power control circuit, an input/output interface, and a display device including a display screen. The writing board 104 provides an area for the user to write on the electronic whiteboard 100 . The surface of the writing board 104 is a smooth flat plate to provide a working surface for whiteboard markers and whiteboard erasers. The material of the plate includes glass or any other material with a smooth surface. An induction board is disposed under the writing surface of the writing board 104 , and the induction board includes an electromagnetic induction board, a capacitive induction board, and a resistive induction board. The signal processing circuit receives and processes the signal generated by the trace of the whiteboard marker or the whiteboard eraser on the sensing board or the wiping action. The control component performs arithmetic processing according to the signal transmitted by the signal processing circuit to convert the signal generated by the trace or wiping action into a display signal, and the display screen synchronously displays the trace or wipe trace of the whiteboard marker or whiteboard eraser on the sensing board according to the display signal . The control unit can also convert the signal generated by the trace or wipe action into a data to be stored in memory or output to an external device.

The electromagnetic induction board is configured with several antenna boards under the writing surface of the writing board 104 to form an area for the user to write on the electronic whiteboard 100 . There are a plurality of antenna loops respectively distributed along the X-axis and the Y-axis on the antenna board for transmitting and receiving electromagnetic signals. The antenna loop on the antenna board is drawn to the frame of the electronic whiteboard 100 , and is controlled by a switch corresponding to the antenna loop to turn on transmitting or receiving electromagnetic signals or turn off to suspend transmitting or receiving electromagnetic signals. The switch corresponding to the antenna loop is controlled by the scanning control and signal processing circuit. The scanning control and signal processing circuit controls the antenna circuit to emit electromagnetic energy one by one, and receives the electromagnetic signals emitted by the electromagnetic whiteboard marker and the electromagnetic whiteboard, and detects the position of the electromagnetic whiteboard marker and the electromagnetic whiteboard on the electronic whiteboard 100 and coordinate positioning.

The electromagnetic induction board is used together with the electromagnetic whiteboard marker and the electromagnetic whiteboard eraser. The electromagnetic whiteboard pen has an ink refill capable of outputting ink for writing, and a related circuit and coil capable of emitting electromagnetic signals. While the ink refill is writing and outputting ink on the electronic whiteboard, the coil will simultaneously send out an electromagnetic signal, causing the electronic whiteboard to generate electromagnetic induction and record the position and movement track of the electromagnetic whiteboard pen. The electronic whiteboard records the ink handwriting on it while writing, and converts the moving track of the electromagnetic whiteboard pen into digital data for storage. The electromagnetic whiteboard eraser can erase the ink writing and the electromagnetic whiteboard marker handwriting on the electronic whiteboard at the same time. The electromagnetic whiteboard eraser has a cloth for erasing ink handwriting and related circuits and coils for emitting electromagnetic signals. By setting the coil at the position corresponding to the center of the wiping cloth, and taking the radius of the wiping cloth as the radius of an erasing area, after the electronic whiteboard senses the electromagnetic signal from the coil, it defines an area that coincides with the wiping cloth. And have the same shape and size of the erasing area, so that when the wiping cloth erases the ink handwriting on the electronic whiteboard, it also erases the corresponding electromagnetic whiteboard marker handwriting defined in the erasing area.

Capacitive sensing boards contain capacitive sensing loops. The capacitive sensing circuit includes a plurality of sensing electrodes (Detection Electrode) and conductor lines connecting the sensing electrodes to the signal processing circuit. The sensing electrodes are arranged to form a sensing detection area. When a contact object such as a whiteboard marker or a whiteboard eraser approaches or touches the sensing electrode, a capacitance is formed between the contact object and the sensing electrode. The position of the contact object on the sensing detection area is the position of the sensing electrode approaching or touching, and the capacitance value of the sensing electrode changes due to the capacitance between the contact object and the sensing electrode. The signal processing circuit detects the capacitance value change of the sensing electrode, and the control component calculates the position of the contact object on the sensing detection area.

The resistive sensing plate includes an upper substrate with upper electrodes and a lower substrate with lower electrodes. The upper and lower substrates are attached to each other but separated by spacers to maintain a distance. When the whiteboard marker or whiteboard eraser touches and presses the upper substrate, the upper electrode and the lower electrode are in contact with each other to generate a voltage corresponding to the position of the whiteboard marker or whiteboard eraser, and the detected voltage value is compared with the corresponding whiteboard marker or whiteboard The location output in wipe coordinates. The upper substrate of the resistive sensing board has an array of touch points (upper electrodes) and a wire layout connecting the touch points, and the lower substrate has a conductor array (lower electrodes) corresponding to the array of touch points. The height of the spacer separates the touch point array and the conductor array, and when the whiteboard pen or whiteboard eraser touches and applies pressure, the touch points of the touch point array and the conductor array conduct, so the position of the whiteboard pen or whiteboard eraser can be used. The signal is transmitted to the control component by the wire, and the position of the whiteboard marker or the whiteboard eraser on the sensing detection area is calculated by the control component.

FIG. 2 shows a functional structure diagram of an electronic whiteboard according to an embodiment of the present invention. The electronic whiteboard 200 of the present invention includes a control unit 202 , a display unit 204 , a memory 206 , a signal processing unit 208 , a sensing unit 210 , a power control unit 212 , an I/O interface 214 and a wireless transmission unit 216 . The sensing unit 210 includes a sensing board in the electronic whiteboard 200 and related layout circuits, and the sensing board includes an electromagnetic sensing board, a capacitive sensing board, and a resistive sensing board. The sensing unit 210 generates a sensing signal of a contact object. The signal processing unit 208 includes a signal processing circuit. The signal processing unit 208 processes the sensing signal generated by the sensing unit 210 to generate a track or position signal. The control unit 202 includes a microcontroller or processor for processing the track or position signal generated by the signal processing unit 208 to perform various functions of the present invention, including display, printing, storage and wireless transmission. The display unit 204 includes a display screen and a screen driving circuit. The display screen includes a liquid crystal screen, but is not limited to a liquid crystal screen. The memory 206 includes built-in memory and external memory. The built-in memory includes flash memory, random access memory or other storage methods. External memory includes flash memory cards such as multimedia memory card (MMC) and SD memory card (SD Card). The electronic whiteboard 200 can be connected to an external power source through the power control unit 212 . The electronic whiteboard 200 can be connected to the external device 203 through the input/output interface 214 . The I/O interface 214 includes Universal Serial Bus (Universal Serial Bus/USB), but not limited to Universal Serial Bus, and also includes other I/O interfaces. The external device 203 includes a computer, a printer, a flash drive and a mobile hard disk. The mobile device 201 includes a mobile phone, a notebook computer, a tablet computer and any device capable of wirelessly transmitting files. The wireless transmission unit 216 includes a wireless transmission device or module using Bluetooth (Bluetooth), IEEE 802.11 or Wi-fi, Wireless Universal Serial Bus (Wireless Universal Serial Bus) and Zeebe technology.

A contact object such as a whiteboard marker or a whiteboard eraser writes or wipes on the sensor board to generate a sensing signal, which is processed by the signal processing unit 208 to generate a track or position signal of the contact object. The control unit 202 processes the trajectory or position signal output by the signal processing unit 208 to convert it into a driving signal to drive the screen driving circuit, and synchronously displays the trajectory of the contact object written on the electronic whiteboard 200 on the display screen of the display unit 204 . The control unit 202 can also convert the track or position signal output by the signal processing unit 208 into storable file format or exportable data for printing out. The control unit 202 drives or executes the access memory 206 according to the user input operation, or outputs the data to the external device 203 through the I/O interface 214 , or transmits the data to the mobile device 201 through the wireless transmission unit 216 .

In addition, the user can also choose whether to store the track or position of the contact object on the electronic whiteboard, that is, the writing content, in the memory 206 through the user interface displayed on the display screen of the display unit 204, or to print the electronic whiteboard with a printer through the output interface 214. The writing content on the electronic whiteboard, or store the writing content on the electronic whiteboard in the computer, flash drive and mobile hard disk through the input/output interface 214. The control unit 202 can convert the signal value generated by writing or wiping into various formats of file data through a built-in program, such as portable document format or PDF format (Portable Document Format), bitmap format or BMP format and JPEG (Joint Photographic Experts Group) format for easy output printing and archiving. The user can also choose whether to transmit the written content on the electronic whiteboard, that is, the track or position of the contact object, to the mobile device 201 through the wireless transmission unit 216 through the user interface displayed on the display screen of the display unit 204 .

3A to 3D respectively show the user interface of the display screen of the control device of the electronic whiteboard according to an embodiment of the present invention. As shown in FIG. 3A , the user interface displayed on the display screen 302 of the control device in the first figure provides the user with the choice whether to store the written content on the electronic whiteboard, or output it to a printer through the I/O interface to print on the electronic whiteboard. written content, or transmit to a mobile device through a wireless transmission unit using Bluetooth technology. The storage method can be stored in mobile devices such as flash drives through the input and output interfaces, or directly stored in external memory such as flash memory cards such as multimedia memory cards and SD memory cards. Before storage, output to external devices and wireless transmission, the control unit must convert the signal value generated by writing or erasing into file data in various formats. The selection button 304 on the control device provides the user with function selection. The power switch 306 is the power switch of the electronic whiteboard, and printing can be performed by pressing the print key 308 . The control device also includes a memory card slot for the user to use the memory card to save and output the input and write data records on the electronic whiteboard in real time. The memory card slot 208 can accommodate flash memory cards such as multimedia memory cards and SD memory cards. The input and output interface slot also includes a USB slot, which can provide an electronic whiteboard input and output interface to connect with devices such as computers, printers, and flash drives.

If the user selects the wireless transmission unit to transmit to the mobile device through the selection button on the control device, the display screen of the control device presents the user interface as shown in Figure 3B. The user selects the Bluetooth technology wireless transmission file with the selection direction key and presses Press the OK button to transfer. If the user chooses to output to the printer through the I/O interface through the selection button on the control device to print the written content on the electronic whiteboard, the display screen of the control device presents the user interface as shown in Figure 3C, and the user uses the direction keys to select After printing the parameters, press the print key 308 to print. If the user selects the storage file through the selection button on the control device, the display screen of the control device presents the user interface as shown in Figure 3D. The user selects the storage method with the selection direction keys and presses the OK button to save, wherein the storage Ways include storing in mobile devices such as flash drives or storing in flash memory cards through the I/O interface.

The above are only preferred embodiments of the present utility model, and do not limit the utility model in any form. Although the utility model has been disclosed as above with preferred embodiments, it is not intended to limit the utility model. Any Those who are familiar with this profession, without departing from the scope of the technical solution of the present utility model, can use the technical content disclosed above to make some changes or modify equivalent embodiments with equivalent changes, but all without departing from the technical solution of the utility model Any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the utility model still belong to the scope of the technical solution of the utility model.

Claims (13)

1. An electronic whiteboard capable of transmitting files through a wireless interface, characterized in that it comprises: A sensing unit, which generates a sensing signal according to the trajectory or position of the contact object; a signal processing unit, the signal processing unit processes the sensing signal and generates a track signal; a control unit, the control unit processes and converts the trajectory signal into a drive signal and data that can be stored or output; a display unit, which synchronously displays the track or position of the contact object according to the driving signal; and A wireless transmission unit transmits the data to a mobile device. 2 . The electronic whiteboard according to claim 1 , wherein the sensing board comprises an electromagnetic sensing board, a capacitive sensing board or a resistive sensing board. 3 . 3. The electronic whiteboard according to claim 1, wherein the contact object comprises an electromagnetic whiteboard marker and an electromagnetic whiteboard eraser. 4. The electronic whiteboard as claimed in claim 1, further comprising a memory. 5. The electronic whiteboard according to claim 4, wherein the memory includes a multimedia memory card and an SD memory card. 6. The electronic whiteboard as claimed in claim 1, further comprising an input/output interface for outputting the data to an external device. 7. The electronic whiteboard according to claim 6, wherein the external device comprises a computer, a printer, a flash drive or a mobile hard disk. 8. The electronic whiteboard as claimed in claim 6, wherein the I/O interface comprises a Universal Serial Bus. 9. The electronic whiteboard according to claim 1, wherein the file format of the data includes portable document format, bitmap format and JPEG format. 10. The electronic whiteboard according to claim 1, wherein the wireless transmission unit includes a wireless transmission device or module using Bluetooth, IEEE 802.11 or Wi-fi, wireless universal serial bus and Zeebe technology. 11. The electronic whiteboard according to claim 1, further comprising a power control unit. 12. The electronic whiteboard as claimed in claim 1, wherein the display device comprises a liquid crystal display screen. 13. The electronic whiteboard according to claim 1, wherein the mobile device comprises a mobile phone, a notebook computer or a tablet computer. the

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