CN102929451A - Intelligent whiteboard system using ultrasonic touch screen - Google Patents
Intelligent whiteboard system using ultrasonic touch screen Download PDFInfo
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- CN102929451A CN102929451A CN 201110236237 CN201110236237A CN102929451A CN 102929451 A CN102929451 A CN 102929451A CN 201110236237 CN201110236237 CN 201110236237 CN 201110236237 A CN201110236237 A CN 201110236237A CN 102929451 A CN102929451 A CN 102929451A
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Abstract
The invention relates to an intelligent whiteboard system using an ultrasonic touch screen. The system comprises an android system module, a liquid crystal display module and an ultrasonic touch screen module, wherein the ultrasonic touch screen module is used as standard universal serial bus (USB) human interface device (HID) input equipment of an android system and can be positioned on the surface of the liquid crystal display module to realize clicking, moving and writing functions, namely a complete touch screen positioning function is realized; and after input data are processed by the android system, a processing result is displayed on the liquid crystal display module. By the system, an electronic whiteboard which is low in cost and has long service life and extra-large size is implemented and can be used as a substitute of a whiteboard product using a projector; and the function of the electronic whiteboard is expanded through a large amount of usable software on an android platform, so that the electronic whiteboard becomes intelligent.
Description
Technical field
The present invention relates to a kind of electric whiteboard system that utilizes the ultrasound wave positioning principle to realize at liquid crystal display, belong to information processing and signal process field.
Background technology
Existing electronic whiteboard is the new high-tech product that has compiled the multiple high-tech means research and development such as most advanced and sophisticated electronic technology, software engineering, in conjunction with computing machine and projector, can realize with no paper office and teaching, it can directly as common blank or blackboard for education be write with pen, then be passed in the computer and go, with respect to projector, common blank, electronic whiteboard has the advantage of himself.The interactive electric whiteboard industry has obtained faster development in the world wide now.Progressively maturation take general education application and business presentations, interactive interactive demonstration as main education and commercial two large application markets, electronic whiteboard market presents prosperity grand view.In the time of the continuous progress of electronic whiteboard technology, break away from the various shortcomings as the viewing hardware carrier with projector, relied on flat panel TV, LCD TV to begin to occur as the novel interactive intellectual education product that shows carrier.Take plate techniques such as liquid crystal as showing the product of carrier, why can be so welcome, key is the defective that change writing process that it can essence may block projector's transmission picture.Have also simultaneously that brightness is high, picture is fine and smooth, color is more saturated, to the characteristics of the not clear sense of ambient light.Its screen has anti-scratch, anticorrosion, easy to clean, impact resistance after special processing, have the screen reflection-proof; Show not to be subjected to the characteristics such as light, infrared ray etc. affect, screen shadow-free etc. when writing, serviceable life is also considerably beyond projector.The main positioning principle that electronic whiteboard uses has following several:
Induction principle of work be adopt one can emitting electromagnetic wave pen, the receiving coil film composition that the horizontal vertical both direction is arranged, the size of film is identical with the viewing area.Positioning principle is, the pen of emitting electromagnetic wave press the intermittent mode emitting electromagnetic wave, when pen during near the film of receiving coil, can sense the electromagnetic wave that pen is launched on the coil.The electromotive force of sensing from the nearest coil groups of pen is higher, and the electromotive force of sensing according to horizontal direction and vertical direction is by calculating X, the Y coordinate position that can obtain a place.Locate relatively accurate but be difficult to realize that the space of a whole page of overlarge area makes.
The principle of infrared technique is: the scanning grid that pipe is formed the horizontal and vertical direction by infrared reception around gathering in the viewing area and emission, form a plane of scanning motion net, when having the object blocks that can stop infrared light to live in the grid certain to horizontal and vertical infrared scan line, just can be by the infrared ray location positioning X of the horizontal and vertical direction that is blocked, the Y coordinate, the location of realizing coordinate.Advantage is that accurate positioning, precision are higher, but the blank of different size just need to have the frame of different size.
The surface acoustic wave positioning principle is comprised of touch-screen, sonic generator, reverberator and sound wave receptacle, wherein sonic generator can send a kind of high frequency sound wave and cross over screen surface, when finger touched screen, the sound wave on the contact namely was prevented from, and determined thus coordinate position.Surface acoustic wave touch screen is not subjected to the such environmental effects such as temperature, humidity, and bearing accuracy is high, and fabulous scratch resistant property, life-span length, transmittance advantages of higher are arranged, and shortcoming is that cost is high.
The principle of ultrasonic technology is: be transmitted into time of reception according to ultrasound wave and calculate launching site to the distance of acceptance point.What the principle of use on plane positioning adopted is to place two ultrasonic receiving traps that distribute by fixed range on one side of screen, the pen that is used for the location is a ultrasound wave and Infrared Projector, when pen movement during screen surperficial, the ultrasound wave of launching and infrared signal detect along the received device of screen surface, by receiving that hyperacoustic mistiming can converse the distance of pen and two receivers.Adopt the principle of three-point fix, namely can determine the summit principle at a place according to known three length of sides of triangle, calculate the position coordinates at a place.Although this all range finding station-keeping mode has used infrared ray, the general simple ultrasound wave location that is called.Advantage is that the location is relatively accurate, and strong adaptability can use at the equipment of different area, but shortcoming is to be subjected to influence of temperature change larger.
Because large whiteboard system is to surpass more than 60 cun to the requirement of display screen, this moment, hyperacoustic advantage just revealed, and no matter screen is much, and cost is basically identical, produces easy for installation.But liquid crystal display has the problem of heating, and after having solved temperature problem (see patented claim 200910224657.5, a kind of heat-nonuniform plane of eliminating is to the method for localization by ultrasonic interference), the advantage of ultrasonic technology scheme is obvious.
Android is based on the operating system of the open kernel of Linux, is the mobile phone operating system that Google company announced on November 5th, 2007.Software architecture mainly is divided into three parts.The bottom linux kernel only provides basic function, and other application software then by each company's self-developing, write with Java by application program.Data show at the beginning of 2011, and only the operating system Android in 2 years of official listing has surmounted the Saipan system that seeks hegemony 10 years, make it to leap to the most popular intelligent mobile phone platform in the whole world.And beginning is to dull and stereotyped and computer field expansion, and the existing hardware that loads Android operating system is very powerful, existingly comprises the product that two dominant frequency surpass 1GHZ kernel and low-power consumption and emerges, probably fully alternative existing PC gradually.With it supporting application software shop Android Market in 200,000 sections of above different softwares have been arranged, comprise the various different application such as game, office, network, and the interior freeware of Android Market occupies 6 one-tenth at present, as long as used Android operating system, just can use this huge resource.
HDMI (High Definition Multimedia Interface) is HDMI (High Definition Multimedia Interface), it is a kind of digitized video/audio interface technology, it is the tailored version digital interface that is fit to image transmission, it can transmit audio frequency and signal of video signal simultaneously, and the maximum data transmission speed is 5Gbps.Need not simultaneously to transmit advance capable D/A or mould/number conversion at signal.DVI (Digital Video Interface), i.e. digital visual interface.Can use the long distance of cheaply private cable realization, high-quality digital data transmission.Digital visual interface (DVI) is a kind of interface standard of international openness, is widely used at equipment such as PC, DVD, high definition television (HDTV), high-resolution projector.VGA (Video Graphics Array) interface also is the D-Sub interface.All be to be connected by simulation VGA interface between most computing machine and the external display device.Present Liquid Crystal Module and TV have HDMI interface or DVI interface mostly, comprise simultaneously the VGA interface.
The abbreviation of USB (Universal Serial BUS) USB (universal serial bus) is an external bus standard, is used for being connected and communication of standard computer and external unit.It is the interfacing that is applied in PC and built-in field.The plug and play of USB interface support equipment and warm connection function.HID (Human Interface Device) equipment is equipment direct and that the people is mutual, such as keyboard, mouse and joystick etc.But HID equipment might not have man-machine interface, all is HID equipment as long as meet the equipment of HID classification standard, and benefit is plug and play, and a large amount of USB peripheral hardwares all is to use the HID standard now, comprises touch-screen.
Touch screen technology is a kind of novel man-machine interaction input mode, compares with the mouse input mode with traditional keyboard, and the touch-screen input is more directly perceived.Cooperate identification software, touch-screen can also be realized handwriting input.Touch-screen forms by touching detection part and touch screen controller, touches detection part and is installed in the indicator screen front, for detection of user touch location, then relevant information is sent to touch screen controller; And the Main Function of touch screen controller is to receive touch information from touch point detection device, and converts it to contact coordinate, sends CPU to again.It can receive simultaneously the order that CPU sends and be carried out.Distinguish touch-screen from the prior art principle, can be divided into five basic kind: vector pressure sensing technology touch-screen, resistive technologies touch-screen, capacitance technology touch-screen, infrared technology touch-screen, surface acoustic wave technique touch-screen.The ultrasound touchscreen technology of mentioning herein is the touch-screen that the ultrasound wave positioning principle is realized, and is all different from above several principles, particularly different from the surface acoustic wave technique touch-screen.
WIFI be a kind of can be with terminals such as PC, handheld devices (such as PDA, mobile phone) with the interconnected technology of wireless mode.WIFI is the brand of a Wi-Fi communication technology, is held by WIFI alliance.Purpose is to improve based on the intercommunity between the Wi-Fi product of IEEE 802.11 standards.
Up to now, on the market also less than the whiteboard system in conjunction with localization by ultrasonic technology and Android system advantage.
Summary of the invention
The objective of the invention is to realize the ultrasound wave location in various LCDs, thereby realize low-cost large scale touch screen function, and then can utilize a large amount of softwares on the Android platform to realize a kind of intelligent electronic white board.
The present invention is a kind of intelligent whiteboard system that uses ultrasound touchscreen, it contains Android system module, LCD MODULE and ultrasound touchscreen module, the ultrasound touchscreen module is as the USB HID input equipment of Android system standard, after the Android system handles the data of input, and then the result after will processing sends LCD MODULE to by display interface and shows.This Android system module is the embedded computer system that uses Android operating system, comprise complete hardware and software, hardware can include but not limited to the common modules such as central processing unit, internal memory, video card, sound card, flash memory (Flash) file system, USB interface, audio frequency IO interface, HDMI interface, VGA interface, camera, WIFI, pilot lamp, power module, software comprises complete Android software, comprises that Linux drives layer, Android middle layer and application layer.Application program not only comprises the special software of whiteboard system customized development, also can comprise the built-in software of Android acquiescence, and the function that a large amount of softwares in the Android market are used for this intelligent whiteboard of expansion system can certainly be installed as required.In order to allow Android support the ultrasound touchscreen module, may need to be made amendment in Linux driving layer, Android middle layer.Like this, LCD MODULE is as the display of native system, and the ultrasound touchscreen module is as the touch-screen of native system, and for the ease of understanding, native system can be considered to the Android panel computer of an amplification.
Wherein LCD MODULE can be the large-screen display with liquid crystal display, LCD TV or other principle of HDMI, DVI or VGA interface, such as OLED, plasma display.These interfaces can allow LCD MODULE receive the Android system module by the video information that one of HDMI, DVI or VGA or whole interface send, and show at last; All right audio information when using the HDMI interface, at this moment LCD MODULE can also be play the audio-frequency information that send by the sound box module of a built-in audio decoder.
And the ultrasound touchscreen module is connected with the Android system by USB interface and is identified as USB HID subset.The ultrasound touchscreen module is based on the module that the positioning principle of ultrasound wave and infrared signal positions, and comprises two submodules of transmitter and receiver.Transmitter module can be launched ultrasonic signal and the infrared signal for the location, receiver module then receives ultrasonic signal and the infrared signal of transmitter emission, and the mistiming that arrives according to multiplex ultrasonic calculates distance and the position of the relative receiver module of transmitter module.In native system, the ultrasound touchscreen module positions on the LCD MODULE surface, receiver is installed in the position that the somewhere can receive ultrasonic signal and infrared signal, when transmitter was mobile on the LCD MODULE surface, receiver always can constantly calculate the relative position of the relative receiver of transmitter.This positional information sends the Android system module to by USB interface and processes.
The transmitter submodule uses battery to power, in order to save power supply, at transmitter module a trigger switch is installed, so only when the contacting of transmitter and LCD MODULE surface, just can trigger this switch by contact action, then transmitter can constantly launch ultrasonic signal, when transmitter and LCD MODULE disengage, this on off state is changed, and transmitter will stop to launch ultrasonic signal.In general, this trigger switch can adopt mechanical switch, infrared external reflection touch switch.The infrared external reflection touch switch is by continuous emission infrared signal, detect again the distance that the infrared signal intensity of returning through the LCD MODULE surface emitting is judged transmitter and surface, if a kind of switch that distance enough closely will trigger, this switch be a large amount of the use for judging whether people's face contacts touch-screen in the touch-screen mobile phones such as iPhone.The trigger switch of transmitter can correspond to button of USB HID equipment, just as the left button of mouse.Be without loss of generality, the process of location and identification contact-key is as follows, and when the trigger switch of transmitter contacted with the Liquid Crystal Module surface, transmitter began constantly to launch ultrasonic signal and the infrared signal that is used for the location by 15 millisecond periods; When the trigger switch of transmitter and liquid crystal modular gauge emaciated face when contacting, transmitter stops to launch ultrasonic signal and the infrared signal for the location.When receiver receives for ultrasonic signal and the infrared signal of locating in idle condition, can calculate positional information, and think that contact-key is pressed, then by USB HID agreement uploading position information and contact-key information, and enter duty; Receive in working order ultrasonic signal and the infrared signal of receiving for the location when receiver, can calculate positional information, and think that contact-key keeps down state, then by USB HID agreement uploading position information and contact-key information, state is constant; When receiver in working order, continuous 20 milliseconds of ultrasonic signal and infrared signals that do not receive for the location are just uploaded the positional information of last time, and are thought that contact-key upsprings, then pass through USB HID agreement uploading position information and contact-key information, and enter idle condition.Thereby realized the function of complete general touch-screen like this, realized including but not limited to the location, click, moved and writing function, namely realized complete touch screen function.
What need to indicate is, transmitter module in the ultrasound touchscreen module is simultaneously as Infrared remote controller, when the button on the transmitter submodule is pressed, send to infrared receiving circuit special in the receiver by another infrared module key assignments that the button on the transmitter submodule is corresponding and process, receiver is issued Android by USB interface again with the key assignments of identification and is processed.Commonly usedly among the Android return desktop (Home), menu (Menu), return (Back), search (Search) four buttons can realize in this way, the user just can be in far-end remote control operation A ndroid system easily like this, also can increase on demand more button, even allow the user pass through key-press input QWERTY keyboard button.The infrared infrared signal circuit that transmits and receives circuit and the use of ultrasound wave location of this cover is not same set of.Such design can allow the user not need this whiteboard system of controlling that frequent shift position just can be complete.
The USB interface purposes of the Android system module in the native system is a lot, mainly is the peripheral hardware that connects various USB interface, and the peripheral hardware of the USB interface of native system support includes but not limited to USB keyboard, USB mouse, USB storage (USB flash disk).When the keyboard of USB interface was inserted the USB interface of native system, the user can use keyboard to input various characters, as English and Chinese; When the mouse of USB interface is inserted the USB interface of native system, the interface that the user can the mouse-based operation system, this moment, the interface of system can show that a cursor is used for showing the position of current mouse.The Android system module can read the data file in the USB flash disk, then using Android system plug-in to open these files edits and preserves, and do not need other computing machine and notebook, because native system is exactly a complete computer, the form of these files of native system support includes but not limited to text, blank file, Word, Excel, PowerPoint file.The built-in blank program that can write, draw, record of Android system module in the native system, and these contents can be kept in the file of special format, this file is called the blank file.Certain native system also can be opened the file that leaves on the network and edit and preserve.Plug-in benefit be that the user need not an external PC and could show and edit various files, the user can only be with a USB flash disk, and built-in required file just can be imparted knowledge to students, the operation such as meeting, greatly reduce cost and improved degree of convenience, be particularly suitable for school's occasion.
Strong extendability by means of Android, when the Android system module in the native system is supported the WIFI interface, can be used as a WIFI focus (Access Point), can allow other this focus of WIFI equipment access set up grid, read easily the data or other data file that show on the LCD MODULE.This function can be used for following sight: in a lyceum, teacher uses native system to give lessons, open a PowerPoint document by native system, this moment, transmitter module can allow teacher carry out a solution and circle notes as a pen, the computer of the support WIFI function that other student carries, mobile phone, the equipment such as panel computer are after installing necessary software, can access this focus by WIFI, at the computer of oneself, mobile phone, see synchronously the content that the native system LCD MODULE shows on the panel computer, the point solution and the circle that comprise PowerPoint document and teacher are annotated, after finishing, teaching the content of courses and teaching process can also be formed file copy at the computer of oneself, mobile phone, on the flat board, review in order to go home.Certainly the student also can carry out real-time, interactive in the process of listening to the teacher, and the information of controlling and writing demonstration on the computer of oneself, mobile phone, the panel computer is delivered to the Android system module, then is presented on the LCD MODULE.
Android system module in the native system can also be with microphone and camera, behind the software that the support audio frequency and video conversations such as QQ, Skype have been installed, and under the support of necessary network, this whiteboard system just can carry out the Voice ﹠ Video conversation with the miscellaneous equipment of supporting the audio or video conversation so, and carry out real-time interaction by the ultrasound touchscreen module simultaneously, interaction content includes but not limited to exchange written information, even can be used for the strange land interactive game.At this moment native system has just been realized the partial function of a conference system, and need not extra cost.Can imagine, by a large amount of softwares in the Android market are installed, can greatly expand the function of this blank, so native system can be called intelligent whiteboard.
Native system can be packaged in the shell, and namely the receiver submodule in Android system module, LCD MODULE, the ultrasound touchscreen module can merge as a module and is placed in the shell; Also can only the receiver submodule in Android system module and the ultrasound touchscreen module can be merged as a composite module, be placed in the shell with magnet, be fixed on the LCD MODULE by magnetic absorption, because most LCD MODULE are with large tracts of land ferrous metal frame structure body, just in time can be used for fixing.Transmitter submodule in the ultrasound touchscreen module can be placed in the space that this composite module shell reserves.Such benefit is the LCD TV of having sold on the market can be fully utilized, as long as add the function that Android system module and ultrasound touchscreen module just can realize native system, reduce user's cost, just the LCD TV of the enormous quantity that exists in the family can be become the interactive intelligent electronic whiteboard, can be used for family's teaching, visual telephone interaction, interactive game, and various simple to operate easy to learn, need not use the telepilot of somewhat complex design to operate, can greatly increase function and the utilization rate of TV in the family.
Because the modules of native system has all adopted standard interface to interconnect, so can easily separately work alone, if the user if required, module in the system can also consist of common white plate system with other computing machine and work alone, be that LCD MODULE can be passed through separately HDMI, DVI, the VGA interface is connected with other display interface of computer, the ultrasound touchscreen module can be connected with this computing machine as the HID input equipment of standard by USB interface separately, the content that this moment, LCD MODULE showed is the output content on this computing machine, and this moment, the Android system module can not play a role.
The benefit of native system is to utilize to have realized the big screen intelligent whiteboard system in conjunction with cheap ultrasound wave location technology and Android system, has utilized fully the magnanimity software for the Android market development, has greatly enriched the function of intelligent whiteboard.This system not only can be used for the common applications such as teaching, meeting, also can be used for the various occasions such as game, information inquiry.
Description of drawings
It below is diagram of the present invention.
Fig. 1 is the composition schematic diagram that has adopted the electric whiteboard system of this invention.Wherein, the 1.Android system module, 2. LCD MODULE, the 3. receiver in the ultrasound touchscreen module, the 4. transmitter in the ultrasound touchscreen module, 5. display interface connects, and the 6.USB interface connects, 7. the ultrasound touchscreen whiteboard system.
Fig. 2 is a kind of lip pencil structural representation of the transmitter in the ultrasound touchscreen module.Wherein, 1. transmitter, 2. fence, 3. mechanical trigger switch, 2,403. body buttons 3 of 02. body button of 401. body button Isosorbide-5-Nitraes, 5. remote control infrared emission head.
Embodiment
The below is first embodiment, referring to Fig. 1, ultrasound touchscreen whiteboard system (7) comprises the receiver (3) in Android system module (1), LCD MODULE (2), the ultrasound touchscreen module, the transmitter (4) in the ultrasound touchscreen module.Transmitter (4) in receiver in the ultrasound touchscreen module (3) and the ultrasound touchscreen module forms a complete ultrasound touchscreen module.Can be connected by the HDMI display interface (5) between Android system module (1) and the LCD MODULE (2) and transmit Audio and Video information.Transmitter in the ultrasound touchscreen module (4) can be mobile at the display surface of LCD MODULE (2), when the trigger switch of the transmitter in the ultrasound touchscreen module (4) and LCD MODULE (2) Surface Contact, be triggered, transmitter in the ultrasound touchscreen module (4) just begins constantly to launch ultrasonic signal and infrared signal by the 15ms cycle, and after the receiver in the ultrasound touchscreen module (3) receives these signals, can calculate according to the mistiming of infrared signal and ultrasonic signal arrival the relative position of the transmitter (4) in the ultrasound touchscreen module, it is converted to the locator data that meets USB HID standard again, then connects (6) by USB interface and send Android system module (1) to.Android system module (1) after receiving these locator datas through the Linux driver handles, finally process by the information of touch-screen, so just can identify the user use in the ultrasound touchscreen module transmitter (4) the click (touchs) of certain position, LCD MODULE (2) surface, the movement on LCD MODULE (2) surface, LCD MODULE (2) surperficial the action such as write, finished the function that touch-screen can be finished.Demonstration result after Android system module (1) will be handled again sends LCD MODULE (2) to by HDMI display interface connection (5) and shows.
The below is second embodiment, referring to Fig. 2, this is the structural representation of the transmitter (1) in a kind of ultrasound touchscreen module that adopts the lettering pen shape, transmitter (1) is a pen that includes electronic controller circuit, and electronic control circuit is for generation of corresponding ultrasound wave and various infrared signal.The front end of body also has fence (2) and mechanical trigger switch (3), mechanical trigger switch (3) is made in the position of nib, just be triggered when nib is run into the LCD MODULE surface, transmitter (1) just begins emission location ultrasound wave and infrared signal.Fence (2) is at body week opening with it, can conduct outside the transmitter (1), in order to be received by the receiver by these openings for ultrasonic signal and the infrared signal of location guaranteeing.Transmitter (1) also has a body button 1 (401), body button 2 (402), body button 3 (403), when the user presses these body buttons, remote control with infrared emission head (5) will launch infrared ray with the key assignments of correspondence to receiver, thereby realize distant control function.Body button 1 (401) can corresponding A ndroid system Menu key, a body button 2 (402) can corresponding A ndroid system gets back to desk-top key, the return key that a body button 3 (403) can corresponding A ndroid system.
Claims (10)
1. intelligent whiteboard system that uses ultrasound touchscreen, it is characterized in that it contains Android system module, LCD MODULE and ultrasound touchscreen module, the ultrasound touchscreen module is as the USB HID input equipment of Android system standard, after the Android system handles the data of input, and then the result after will processing sends LCD MODULE to by display interface and shows; Wherein the ultrasound touchscreen module is based on the locating module of ultrasound wave and infrared positioning principle, and comprises transmitter and two submodules of receiver; The ultrasound touchscreen module can position on the LCD MODULE surface, realizes clicking, moving and writing function, namely realizes complete touch screen function.
2. a kind of intelligent whiteboard system that uses ultrasound touchscreen according to claim 1, it is characterized in that LCD MODULE can be liquid crystal display, the LCD TV with HDMI, DVI or VGA interface, the Android system module sends displaying contents to LCD MODULE by these interfaces, can also audio information when using the HDMI interface.
3. a kind of intelligent whiteboard system that uses ultrasound touchscreen according to claim 1, it is characterized in that the Android system module is the embedded computer system that uses Android operating system, the ultrasound touchscreen module is attached thereto and is identified as a HID equipment by USB interface.
4. a kind of intelligent whiteboard system that uses ultrasound touchscreen according to claim 1, its feature at transmitter module simultaneously as Infrared remote controller, when the button on the transmitter submodule is pressed, send to infrared remote control reception circuit special in the receiver by key assignments corresponding to infrared ray and process, receiver is issued the Android system module by USB interface again with the key assignments of identification and is processed.
5. a kind of intelligent whiteboard system that uses ultrasound touchscreen according to claim 1, the transmitter that it is characterized in that the ultrasound touchscreen module be by with the contact action trigger switch on LCD MODULE surface, transmitter just can be launched ultrasonic signal, and this switch is mechanical switch or infrared external reflection touch switch; This trigger switch is represented as a button in the USB HID equipment.
6. a kind of intelligent whiteboard system that uses ultrasound touchscreen according to claim 1, it is characterized in that the Android system module can read the data file in USB flash disk or the network, then using Android system module plug-in to open these files edits and preserves, and do not need other computing machine and notebook, the form of these files to include but not limited to text, blank file, Word, Excel, PowerPoint file.
7. a kind of intelligent whiteboard system that uses ultrasound touchscreen according to claim 1, it is characterized in that the Android system module can a built-in WIFI focus, interior perhaps other data file that can allow other this system of WIFI equipment access read to show on the LCD MODULE; And allow the message transport of controlling and write demonstration with other WIFI equipment to the Android system module, and then be presented on the LCD MODULE.
8. a kind of intelligent whiteboard system that uses ultrasound touchscreen according to claim 1, it is characterized in that the Android system module can be with microphone and camera, this whiteboard system can carry out the Voice ﹠ Video conversation with the miscellaneous equipment of supporting the audio or video conversation so, and carrying out real-time interaction by the ultrasound touchscreen module simultaneously, interaction content includes but not limited to written information.
9. a kind of intelligent whiteboard system that uses ultrasound touchscreen according to claim 1, it is characterized in that the receiver submodule in Android system module and the ultrasound touchscreen module can merge as a composite module, be placed on together in the shell that magnet is housed, be fixed on the LCD MODULE by magnetic absorption, the transmitter submodule in the ultrasound touchscreen module also can be placed in this composite module shell.
10. a kind of intelligent whiteboard system that uses ultrasound touchscreen according to claim 1, it is characterized in that this blank can also consist of common white plate system with other computing machine and work alone, be that LCD MODULE can be connected with other display interface of computer by HDMI, DVI, VGA interface separately, the ultrasound touchscreen module can be connected with this computing machine as the HID input equipment of standard by USB interface separately, and the content that this moment, LCD MODULE showed is the output content on this computing machine.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103472933A (en) * | 2013-09-09 | 2013-12-25 | 吉林大学 | Portable hand input device and method based on microphones |
| CN103813022A (en) * | 2014-03-06 | 2014-05-21 | 联想(北京)有限公司 | Information processing method and electronic devices |
| CN103995566A (en) * | 2014-04-23 | 2014-08-20 | 方科峰 | Application method for computer system display screen after being unfolded |
| CN104881192A (en) * | 2015-05-28 | 2015-09-02 | 努比亚技术有限公司 | Operation recognition method and device, and terminal |
| CN107274726A (en) * | 2017-07-20 | 2017-10-20 | 安庆状元郎电子科技有限公司 | A kind of wall-inlaid type electronic whiteboard shown with writing integrated |
| CN110288858A (en) * | 2018-04-17 | 2019-09-27 | 北京丰信达科技有限公司 | A kind of children's company wired home blackboard |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103472933A (en) * | 2013-09-09 | 2013-12-25 | 吉林大学 | Portable hand input device and method based on microphones |
| CN103472933B (en) * | 2013-09-09 | 2017-02-01 | 吉林大学 | Portable hand input device and method based on microphones |
| CN103813022A (en) * | 2014-03-06 | 2014-05-21 | 联想(北京)有限公司 | Information processing method and electronic devices |
| US9509851B2 (en) | 2014-03-06 | 2016-11-29 | Beijing Lenovo Software Ltd. | Information processing method and electronic device |
| CN103995566A (en) * | 2014-04-23 | 2014-08-20 | 方科峰 | Application method for computer system display screen after being unfolded |
| CN104881192A (en) * | 2015-05-28 | 2015-09-02 | 努比亚技术有限公司 | Operation recognition method and device, and terminal |
| CN107274726A (en) * | 2017-07-20 | 2017-10-20 | 安庆状元郎电子科技有限公司 | A kind of wall-inlaid type electronic whiteboard shown with writing integrated |
| CN110288858A (en) * | 2018-04-17 | 2019-09-27 | 北京丰信达科技有限公司 | A kind of children's company wired home blackboard |
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Application publication date: 20130213 |