CN2854700Y

CN2854700Y - Radio filmslide player based on embedded system

Info

Publication number: CN2854700Y
Application number: CNU2005200316689U
Authority: CN
Inventors: 李哲; 张克俭; 王玥; 陈绚; 罗佳鑫
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-08-26
Filing date: 2005-08-26
Publication date: 2007-01-03
Anticipated expiration: 2015-08-26

Abstract

The utility model provides an embedding-device-based wireless projector slice display apparatus consisting of controller and receiver. The controller is a handheld embedded device, the core of which is formed by a chip of open multimedia application platform (OMAP).The utility model is a special data terminal that integrates functions of file storage, projector slice display, bluetooth wireless communication and laser pen, and is provided with a universal USB interface, a laser emitting head, a LCD display screen and a keyboard.Connected to a projector, the receiver comprising a programmable gate array FPGA as its core, can be directly connected to the VGA interface of the projector and can exchange data with the handheld controller through bluetooth wireless communication. The receiver input image signals to the projector for display after the received data are processed.Wireless data communication between the controller and receiver is realized by a pair of bluetooth modules capable of performing bluetooth wireless communication therebetween.

Description

Wireless lantern slide playing device based on embedded system

Technical field

The utility model belongs to a kind of wireless lantern slide play apparatus based on embedded system, it adopts embedded and two gordian techniquies of Bluetooth wireless communication, changed traditional lantern slide speech mode, a complete data terminal of a kind of Nover practical, suitable lantern slide playing speech easy to operate, with low cost is provided for the user.

Background technology

In occasions such as international conference, academic report, thesis defense, speeches, we can see the figure of slide file.Lantern slide makes our speech become more lively, has expressed speaker's thought effectively.But we find the place of some deficiency in the process of carrying out slide demonstration, have both caused the waste of resource, make the speaker be difficult to keep the continuity of thinking and speech again.It is which inconvenience? let us looks to use the overall process 1. of lantern slide lecture to make slide file first.2. slide file is copied in the hard disk of the used computer of when speech presentation slides by other mediums (as floppy disk, USB flash disk etc.).3. click your slide file, this moment slide file content will you computer monitor and projector show simultaneously on the right giant-screen.4. tell about in the process, when you have to and carry out some shirtsleeve operations before getting back to computer---switch to down one page, switch to page up or the like, until telling about end.

The flow process the inside of giving a report from above, we have the place of following some inconvenience as can be seen:

(1) in order when doing demonstration, to use an application program PowerPoint in the computer, we have to a computer is removed to the demonstration place, and carry out some loaded down with trivial details line and debugging, at this moment, this computer as slide demonstration does not need to do other thing, only need configuration PowerPoint program just enough, other resource on the computer equals waste.

(2) some simple change actions-upward switching, following switching or the like-we are trapped in the computer next door.Even the excitement that you say is just dense, perhaps in the middle of the audience, exchange with it, you also have to one " just a moment,please; please see down one page ", go to the preceding a mouse click of computer then, this can cause the discontinuous of thinking, and that tells about is discontinuous, simultaneously, we must hold an other thing in hand: laser pen.

This shows, current when using lantern slide to give a report, exist some wastings of resources and a lot of inconvenience really.

Summary of the invention

The purpose of this utility model just provides a kind of wireless lantern slide play apparatus based on embedded system, to bring bigger convenience and free space to the speaker when reducing cost.

For achieving the above object, the technical solution adopted in the utility model is: this lantern slide play apparatus is made up of controller and receiver two parts, controller is a handheld device, being one is the embedded equipment of core with open multimedia application platform-OMAP chip, by main processor modules (OMAP5912) A, memory module B, LCD display module C, keyboard interface module D, external interface module E, bluetooth sending module F, laser emitting module G and power module H totally eight modules form, wherein, memory module B, LCD display module C, keyboard interface module D, external interface module E, bluetooth sending module F directly links to each other with the corresponding port of main processor modules (OMAP5912) A, laser emitting module G is an independent module, emission switch S2 and emitting head are installed on is convenient to the place of operating and launching on the hand held controller, be convenient to speaker's operation and emission, this hand held controller is a collection file storage, slide file is play, Bluetooth wireless communication, functions such as laser pen are in the personal data terminal of one, have file management facilities, for example file browses, select, the last nextpage of slide file switches during broadcast, and the demonstration of corresponding information etc., also has a Universal USB interface on the hand held controller, a laser beam emitting head, a LCD display and a keyboard, USB interface is used for sending the slide file of computer or miscellaneous equipment to controller, the laser pen that laser beam emitting head is made, can make things convenient for the speaker in the speech process, to indicate the emphasis part, LCD display and keyboard then are used for man-machine interface, the speaker carries out man-machine conversation by LCD display and keyboard, and controller is operated; It is the receiving trap of core with the on-site programmable gate array FPGA that receiver is one, by main processor modules (on-site programmable gate array FPGA) I, bluetooth receiver module J, VGA interface module K, memory module L and power module M totally five parts form, wherein, bluetooth receiver module J, VGA interface module K, memory module L directly links to each other with the corresponding port of main processor modules (on-site programmable gate array FPGA) I, a general VGA interface that can directly link to each other with projector is arranged on the receiver, receiver directly docks with VGA interface on the projector by it, the picture signal that receives is input on the projector by the VGA interface on the projector plays.

The bluetooth receiver module J of the bluetooth sending module F of controller and receiver is a pair of exclusive data communication module that can realize the wireless transmission of control information and view data, and radio communication and data transmission between controller and the receiver are finished by them.

During use, at first the slide file that the speaker is needed is sent in the storer of controller from computer or miscellaneous equipment by the USB interface on the controller, the controller that slide file will be housed then takes the speech scene to and gets final product, and does not need to have looked for USB flash disk or notebook computer again.Receiver can directly dock with VGA interface on the projector by the VGA interface in advance as stationary installation, also can take on-the-spot directly butt joint to by the speaker, has removed loaded down with trivial details wiring and debugging from.During speech, controller is controlled by the operator is hand-held, at first presses controller switches, shows log-on message on the display screen, occurs the file directory of being stored then.The speaker can select the file that will demonstrate by upper and lower options button, press definite key then, slide image data and operator's control information will be wirelessly transmitted to receiver by bluetooth module this moment, after suitably handling by receiver, picture signal delivered on the projector by the VGA interface play, be simultaneously displayed on the giant-screen.Switch the lantern slide page by key up and down in the speech process, simultaneously, you can also indicate the part that needs emphasis to point out by the laser pen on the controller.

By top description as can be seen, this covering device provides a kind of convenient and practical lantern slide playing speech mode, is fit to various speech occasion, as the auditorium, and meeting room etc.Through inquiry Chinese patent Information Network, do not see the same apparatus report as yet.

Advantage of the present utility model or good effect are:

1) no longer needs computer in the speech process, changed in traditional speech mode dependence computer.

2) variety of issue that is run in the lantern slide playing speech solves one by one, and each functional module is integrated in the equipment, and the integrated level height is with strong points.

3) light, mobility is good, and the device of a pair of MP3 size just can solve the variety of issue in the speech, and is small and exquisite, light, is convenient to carry.

4) easy to operate, the plant factor height, speech is on-the-spot, and it is a complete data terminal, realizes the complete wireless penetration of speech, does not need other redundance unit, and at ordinary times, controller can also be used as USB flash disk and use.

Description of drawings

Fig. 1 is a controller contour structures synoptic diagram;

Fig. 2 is a receiver contour structures synoptic diagram;

Fig. 3 is a connection diagram between controller, receiver, the projector;

Fig. 4 is a controller internal hardware structural representation;

Fig. 5 is the controller software process flow diagram;

Fig. 6 is a receiver internal hardware structural representation;

Fig. 7 is the receiver software flow pattern.

Embodiment

1 one kinds of wireless lantern slide play apparatus of embodiment based on embedded system

Accompanying drawing 1 is a controller contour structures synoptic diagram, wherein 1, display screen, 2, determine key, 3, the Laser emission switch, 4, laser beam emitting head, 5, options button up and down, 6, the controller body, 7, USB interface;

Accompanying drawing 2 is a receiver contour structures synoptic diagram, wherein 8, the VGA interface, and 9, the receiver body;

Accompanying drawing 3 is a connection diagram between controller, receiver, the projector, wherein 6, the controller body, and 9, the receptacle body, 10, projector, 11, curtain.

Accompanying drawing 4 is a controller internal hardware structural representation, it by main processor modules A, memory module B, LCD display module C, keyboard interface module D, external interface module E, bluetooth sending module F, laser emitting module G and power module H totally eight modules form, constituting one jointly is the embedded equipment of core with main processor modules A.

Main processor modules A: mainly core-integrated package the U4 (OMAP5912 chip) by embedded equipment forms, OMAP5912 is the integrated hardware and software platform of height that TI company produces, it is integrated TMS320C55xDSP kernel and high performance ARM926EJ-S kernel, the digital signal processing capability that the TMS320C55xDS kernel is powerful, for this player provides wide extending space, for example collection of speaker's voice, compression, storage, playback etc.; The ARM926EJ-S kernel is supported 32 and 16 s' instruction set, has memory management unit, can easily (SuSE) Linux OS be transplanted on the ARM.The OMAP5912 chip also has abundant interface control unit, can insert various peripheral hardwares to device easily, and the major function that OMAP5912 chip interface control module is partly realized is as follows:

1) by USB interface control module and extraneous swap data on the sheet, finish data read, reading of data is stored among the Flash USB port, or by the USB port output data.

2) be connected with LCD display by the LCD interface control unit on the sheet, read the fileinfo among the Flash, and this document information is outputed to LCD show.

3) be connected with keyboard by the Keyboard Control unit on the sheet, read the key information of keyboard, and file is managed operation according to key information.

4) be connected with bluetooth module by the UART interface control unit on the sheet, the related data wireless transmission gone out by bluetooth module.

5) be connected with memory module by the FLASH interface control unit on the sheet, be used for storing the code, slide image data of embedded OS, control program etc.

Memory module B (Flash module): U2 forms by the Flash chip, is mainly used to store code, slide image data of embedded OS, control program etc.U4 (OMAP5912) carries out seamless link by FLASH interface control unit on it and U2.Wherein: FLASH A0, the FLASH_A1 of U4 ... the A0 of FLASH_A21, FLASH_A22 and U2, A1 ... A21, A22 link to each other, as address wire; The FLASH_D0 of U4, FLASH_D1 ... the D0 of FLASH_D14, FLASH_D15 and U2, D1 ... D14, D15 link to each other, as data line; The FLASH_CS1 of U4 is connected with the CE of U2, as chip selection signal; The FLASH_OE of U4 is connected with the OE of U2, as the output enable signal; The FLASH_WE of U4 is connected with the WE of U2, as writing enable signal; The FLASH_ADV of U4 is connected with the ADV of U2, as the enable signal of notice U2 latch address; The FLASH_WP of U4 is connected with the WP of U2, as write protect signal; The FLASH_CLK of U4 is connected with the CLK of U2, as the work clock of U2; The FLASH_RDY of U4 is connected with the WAIT of U2, as judging whether the data of U2 are ready to; The FLASH_RP of U4 is connected with the RP of U2, as the read protection signal.

LCD display module C: form by LCD clock controller U8 (S1L50282F23k100), be used for driving LCD display, operation information when showing the fileinfo of storage and carrying out file management, integrated LCD control module among the primary processor U4 (OMAP5912), U8 can directly link to each other with it easily.Wherein: the LCD_P0 of U4, LCD_P1 ... the BAL1 of LCD_P4 and U8, BAL2 ... BAL5 connects, and the LCD_P4 of U4 also is connected with the BAL0 of U8, as blue input signal; The LCD_P5 of U4, LCD_P6 ... the GAL0 of LCD_P10 and U8, GAL1 ... GAL5 connects, as green input signal; The LCD_P11 of U4, LCD_P12 ... the RAL1 of LCD_P15 and U8, RAL2 ... RAL5 connects, and the LCD_P15 of U4 also is connected with the RAL0 of U8, as red input signal; The LCD_PCLK of U4 is connected with the DCK of U8, as the clock signal of phase point; The LCD_AC of U4 is connected with the DE of U8, as data enable signal.

Keyboard interface module D: adopt 2 * 2 keypad S1, be used for carrying out choosing of file, deletion, operations such as last nextpage switching.Integrated Keyboard Control unit among the U4 (OMAP5912), keypad S1 can directly be attached thereto easily. and wherein: the KB_C0 of U4, KB_C1 are connected with C0, the C1 of S1, as the column signal of keyboard; The KB_R0 of U4, KB_R1 are connected with R0, the R1 of S1, and as the capable signal of keyboard, KB_R0, KB_R1 also connect on the VCC and draw by resistance R 1, R2 respectively.

LCD display module C, keyboard interface module D are main as man-machine interface in controller.Controller can directly be read by OMAP5912 by the control information of keyboard input when carrying out file management, and the control information that will show in the control procedure then shows by the LCD that is connected OMAP5912.

External interface module E: be made up of power supply chip U3, electrostatic protection chip U5, USB standard interface U6, decoupling capacitor C1, wherein U3 provides+power supply of 5V for USB interface; U5 has improved the electrostatic protection ability of USB interface, to reduce the USB circuit by the risk of electrostatic breakdown.By USB interface can with the external unit swap data, download or upload slide file.The control module of the USB of integrated On-The-Go (OTG) type among the primary processor U4 (OMAP5912) makes hand held controller both can be used as slave unit data download from the host computer, can be used as main equipment again and gives other USB device transmission data.U4 is by USB control module and external interface module E seamless link on it.Wherein: the USB_DP of U4 and U6+DATA is connected, as USB+differential data signal; The USB_DM of U4 and U6-DATA is connected, as USB-differential data signal; The GPI09 of U4 is connected with the OC of U3, when excessive or temperature is too high when the USB interface electric current, and the OC output low level of U3, notice U4 is correspondingly processed.

Blue teeth wireless sending module F: form by Bluetooth chip U7 (BRF6100), antenna E1, decoupling capacitor C2.This module is used for carrying out wireless data transmission between controller and receiver, so that be transferred to the slide file data that will show on the receiver that the bluetooth receiver module has been installed by the bluetooth sending module, after being correspondingly processed, deliver to projector, be presented on the giant-screen.Bluetooth technology can reach 721Kb/s when adopting asymmetrical connectionless asynchronous transmission link transmission data, can satisfy the demand fully.

Bluetooth chip U7 (BRF6100) is integrated functions such as the base band of bluetooth, RF, internal memory, voltage management on single-chip, thereby have formed a complete Bluetooth wireless communication module.U7 (BRF6100) chip is applicable to low cost (BRF6100 is only about 4 dollars), the mobile device of extensive application, and its performance and space are that tool is conclusive.

Primary processor U4 (OMAP5912) realized with being connected by universal asynchronous serial (UART) interface control unit on its sheet of Bluetooth chip U7 (BRF6100), it comprises: the UART1_CTS of U4, UART1_RTS, UART1_RX, UART1_TX are connected with HC_RTS, HC_CTS, HC_TX, the HC_RX of U7, thereby realize adopting between U4 and U7 the mode swap data of universal asynchronous serial; The CLK32K of U4 is connected with the SLOW_CLK of U7, utilizes the input clock of the 32KHz output clock of OMAP5912 as BRF6100; The GPIO3 of U4 is connected with the RESET of U7, as in case of necessity to the reset signal of BRF6100; The GPIO4 of U4 is connected with the WP of U7, to forbid that the EEPROM on the BRF6100 is carried out write operation.

Laser emitting module G: be used to realize the function of laser pen, it is a relatively independent module that this module and above several module are compared.Because laser emitting module has many products can be for utilizing, for example LM-D007 etc. is easier to so realize the function ratio of laser pen.In this patent, this module is by triode Q1, Q2, light emitting diode D1, and resistance R 3, R4, R5, R6, capacitor C 3, C4, C5 and switch S 2 are formed jointly.Have characteristics such as circuit is simple, with low cost.

Power module H: be made up of power supply chip U1, outlet P1, inductance L 1, inductance L 2, this module is used to produce the working power of other module of controller: VCC, VDD_3V3, VDD_CORE, LCDVCC_3V.Wherein, VDD_3V3, VDD_CORE are as the working power of main processor modules A; VDD_3V3 is as the working power of memory module B, bluetooth sending module F; LCDVCC_3V is as the working power of LCD display module C; VCC is as the working power of keyboard interface module D, external interface module E, laser emitting module G.

Accompanying drawing 5 is the control end software flow pattern, expression be the built-in function process of control end when playing lantern slides.After bringing into operation, software at first connects, then the current page number is put one, send the current page number and current page number previous frame, the view data of next frame, whether detect then has button to press, if do not have, then wait for, when having detected button and press, continuing to detect is which button is pressed again, and " descends " if button, so just send a control code word " BUTTONDOWN " by blue tooth interface, simultaneously with the current page number+1, and then send the view data of the frame of the current page number+1, " go up " if button, so just send a control code word " BUTTONUP ", with the current page number-1, send the view data of the frame of the current page number-1 more simultaneously, if switch, send control code word " POWEROFF " so, finish software flow then.

Accompanying drawing 6 is a receiver inner structure synoptic diagram, and receiver is made up of main processor modules I, bluetooth receiver module J, VGA interface module K, memory module L and power module M.

Main processor modules I: U10 forms by the on-site programmable gate array FPGA module, it is the core of receiver, it is responsible for the image information that bluetooth module receives is buffered among the synchronous dynamic random access memory SDRAM, deposit the information of three pages of images among the SDRAM, they are respectively current page, page up, following one page, to reduce the response time of switching page or leaf up and down, satisfy the requirement of system real time.What store in SDRAM is the picture of jpeg format, after FPGA receives steering order from control end, its decoding need be converted into the rgb signal of VGA interface, by control to signals such as the RGB carrier chrominance signal of image, line synchronizing signal, field sync signals, and with reference to the VGA interface standard, send view data to projector by the VGA interface, the control projector shows slide image.We select the EPF10K100E of ALTER company, and it has 4992 logical blocks and 12 embedded RAM pieces, is enough to finish our requirement to its function.

Bluetooth receiver module J: form by Bluetooth chip U9 (BRF6100), antenna E2, decoupling capacitor C6, be used for receiving the data that controller sends by bluetooth.U4 (OMAP5912) is similar with the interface of U7 (BRF6100) in the Interface and Controler of U10 in the receiver (FPGA) and U9 (BRF6100), and just the universal asynchronous serial (UART) of FPGA device is realized by the VHDL language simulation.

VGA interface module K: adopt the DB-15VGA output interface J1 of standard, be used for being connected between receiver and the projector.U10 (FPGA) needs simulation VGA interface signal to be connected with J1.It comprises that the RED of following signal: U10 is connected with 1 of J1, as the danger signal line; The GREEN of U10 is connected with 2 of J1, as the green line; The BLUE of U10 is connected with 3 of J1, as the blue signal line; The HSYNC of U10 is connected with 13 of J1, as horizontal-drive signal; The VSYNC of U10 is connected with 14 of J1, as vertical synchronizing signal; The SDA of U10 is connected with 12 of J1, as the serial data address wire; The SCL of U10 is connected with 15 of J1, as serial clock.

The memory module L of receiver: comprise U11, U12 (SDRAM) that is used for caching image data and the U15 (EEPROM) that stores the FPGA configuration data.

In U11, U12 (SDRAM), deposit the view data that receives.In order to reduce the response time that the page switches, satisfy the requirement of device real-time, in U11, U12 (SDRAM), deposit the data of page up, current page, following one page.We can realize the read-write to U11, U12 (SDRAM) by U10 (FPGA) programming simulation U11, U12 (SDRAM) interface sequence, it comprise following signal: U10 EA0, EA1 ... the SDADDR1 of EA15 and U11, U12, SDADDR2 ... SDADDR16 connects, as address wire; The ED0 of U10, ED1 ... the SDDATA1 of ED7 and U11, SDDATA2 ... SDDATA8 connects, the ED8 of U10, ED9 ... the SDDATA1 of ED15 and U12, SDDATA2 ... SDDATA8 connects, as data line.Wherein U11 is the least-significant byte data, and U12 is the most-significant byte data; The SDWE of U10 is connected with the nWE of U11, U12, as writing enable signal; The SDCAS of U10 is connected with the nCAS of U11, U12, as column address gating signal; The SDRAS of U10 is connected with the nRAS of U11, U12, as rwo address strobe signals; The CE1 of U10 is connected with the nCS of U11, U12, as chip enable signal; The CLKOUT of U10 is connected with the CLK of U11, U12, as clock signal.

U15 (EEPROM) is used to store the configuration data of FPGA.Different with CPLD, FPGA is based on the gate array mode and provides programmable resource for the user, and the formation of its internal logic structure determines by configuration data.These configuration datas need be loaded among the SRAM of FPGA inside by external control circuit or microprocessor, because the volatibility of SRAM when powering on, all must reconfigure FPGA, thereby finish the function that user program will be realized at every turn.Therefore we use EEPROM that FPGA is configured because the configuration data size of EPF10K100E is 1336K, so the EEPROM of our selection for can repeat erasable EPC2, its capacity is 2M bits.Equally, by U10 (FPGA) programming simulation U15 (EEPROM) interface sequence, we can realize the read-write to U15 (EEPROM), it comprise following signal: U10 EA0, EA1 ... the A0 of EA16 and U15, A1 ... A16 connects, as address wire; The ED0 of U10, ED1 ... the D0 of ED7 and U15, D1 ... D7 connects, as data line; The NAWE of U10 is connected with the nWE of U15, as writing enable signal; The NAOE of U10 is connected with the nAOE of U15, as the output enable signal; The CE0 of U10 is connected with the nCE of U15, as chip enable signal.

Power module M: by power supply chip U13, U14, outlet P2, capacitor C 7, C8, resistance R 7, R8, R9, R10 form, and this module is used to produce the required working power of each module of receiver: VDD_3V3, VDD_2V5.Wherein, VDD_3V3, VDD_2V5 are as the working power of U10 (FPGA); VDD_3V3 is also as the working power of U9 (BRF6100), U11 (SDRAM), U12 (SDRAM), U15 (EEPROM).

Accompanying drawing 7 is the software flow pattern of receiver, at first controller is passed the frame image information of coming after software brings into operation and read in corresponding internal memory: the former frame district, the present frame district, one frame district, back, wait for then receiving control code, if the control code of receiving is then judged control code, if " BUTTONDOWN ", whether be last page content, if show so " being last page " if judging current so, if not, then show the picture material in the one frame district, back, simultaneously, receive the view data that controller transmits, with the former frame of memory field with the position of the current page number+1, present frame, the view data of back one frame is upgraded.Same, if control code of receiving " BUTTONUP ", whether be first page, if show so " being first page " if then judging current, if not, then show the picture material in the one frame district, back, simultaneously, the view data that receiving end/sending end transmits, with the former frame of memory field with the position of the current page number-1, the view data of present frame, back one frame is upgraded.If the control code of receiving " POWEROFF " is then closed demonstration, software finishes.

The course of work of this device is as follows: receiver is directly received in the on-the-spot baloption by the VGA interface as stationary installation; Controller is a hand-held device, slide file is read into main processor modules A (OMAP5912) by external interface module E (USB interface), be stored in simultaneously among the memory module B (Flash), and show by the LCD display on the controller, be transplanted to the management that embedded OS on the OMAP5912 is responsible for slide file.

When the playing lantern slides file, controller is hand-held by the lecturer, and select the slide file that to play by the keyboard on it, choose the back by definite key, started the Application Software Program of controller this moment, Application Software Program is transferred to the bluetooth sending module with the view data of slide file and control information by universal asynchronous serial (UART) and sends, and the lecturer can indicate the part that needs emphasis to point out by the switching of nextpage on the Keyboard Control slide file on the controller and by laser pen; At receiving end, in case open the power supply of projector, the application software of receiver is moved thereupon, waits for that transmitting terminal sends view data and control information.View data receives and is buffered among the SDRAM by the bluetooth module of receiver.What store in SDRAM is the picture of jpeg format, after FPGA receives steering order from control end, the image data decoding is converted into the rgb signal of VGA interface, and by control to signals such as the RGB carrier chrominance signal of image, line synchronizing signal, field sync signals, with reference to the VGA interface standard, send view data to projector by the VGA interface, the control projector shows slide image on giant-screen.

For reducing the response time of switching page or leaf up and down, satisfy the requirement of system real time, in SDRAM, deposit the information of three pages of images, they are respectively current page, page up, following one page, the software program of controller and receiver has guaranteed the realization of this function.

By top description as can be seen, this cover system provides a kind of convenient and practical meeting, report control mode.In use, can also add greater functionality, this thinking can be developed into different field simultaneously according to the market demand.

Claims

1, a kind of wireless lantern slide playing device based on embedded system, it is characterized in that, this lantern slide play apparatus is made up of controller and receiver two parts, controller is a handheld device, be one with open multimedia application platform---the OMAP chip is the embedded equipment of core, by main processor modules (A), memory module (B), LCD display module (C), keyboard interface module (D), external interface module (E), bluetooth sending module (F), laser emitting module (G) and power module (H) totally eight modules are formed, wherein, memory module (B), LCD display module (C), keyboard interface module (D), external interface module (E), bluetooth sending module (F) directly links to each other with the corresponding port of main processor modules (A), laser emitting module (G) is an independent module, emission switch (S2) and emitting head are installed on the hand held controller, receiver is the equipment that can directly link to each other with the VGA interface of projector, being one is the receiving trap of core with the on-site programmable gate array FPGA, by main processor modules (I), bluetooth receiver module (J), VGA interface module (K), memory module (L) and power module (M) totally five parts are formed, wherein, bluetooth receiver module (J), VGA interface module (K), memory module (L) directly links to each other with the corresponding port of main processor modules (I), and the bluetooth sending module (F) of controller is a pair of exclusive data communication module that can realize the wireless transmission of control information and view data with the bluetooth receiver module (J) of receiver.

2, the wireless lantern slide playing device based on embedded system as claimed in claim 1 is characterized in that: a Universal USB interface is arranged, a laser beam emitting head, a LCD display and a keyboard on the controller.

3, the wireless lantern slide playing device based on embedded system as claimed in claim 1 is characterized in that: receiving end has a general VGA interface that can directly link to each other with projector.