CN202422054U

CN202422054U - Wireless hand writing board with digital audio/video transmission and entity exhibition stand functions

Info

Publication number: CN202422054U
Application number: CN2011204864476U
Authority: CN
Inventors: 王进; 董德琳; 毕长平
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-11-30
Filing date: 2011-11-30
Publication date: 2012-09-05
Anticipated expiration: 2021-11-30

Abstract

The utility model discloses a wireless hand writing board with digital audio/video transmission and entity exhibition stand functions, wherein a microphone, a miniature camera, a miniature sound box are installed on the hand writing board to form wireless terminal equipment; a hand writing board controller, image and voice A/D (analog-to-digital) and D/A (digital-to-analog) converters, a microprocessor MCU (Microprogrammed Control Unit), a wireless transmission module and an I/O (input/output) interface circuit are installed in the hand writing board to form wireless receiving equipment; the output of the hand writing board is connected with the MCU through the hand writing board controller; the signal outputs of the miniature camera, the microphone and the miniature sound box are amplified and are respectively connected with the microprocessor MCU through the image and voice A/D and D/A converters and are output and received by the wireless transmission module; and the hand writing board, the miniature camera and the miniature sound box receive a signal output by a wireless emission module of a computer terminal through the I/O interface circuit and the microprocessor MCU. The wireless hand writing board disclosed by the utility model is convenient and flexible and is capable of realizing wireless multimedia demonstration; in demonstration, a lecturer can freely walk and notes or drawings can be added to the demonstration object, thereby realizing the wireless real-time writing in class teaching and effectively organizing and controling the speech/teaching process.

Description

The wireless handwriting pad of the transmission of band digital audio-video, real object exhibition booth function

Technical field

The utility model belongs to the computer peripheral equipment field, specifically is a kind of wireless handwriting pad with digital audio-video transmission, real object exhibition booth function, and the audio-visual transmission technology of wireless digital realizes the wireless handwriting pad of exhibition booth, microphone, hand-written and function of loudspeaker box.

Background technology

At present, the wireless computer telepilot is own in being widely used in Industry Control and imparting knowledge to students.UltraVNC is discerned processing to this signal again through the corresponding self-defined study of button, thereby realizes the whole resources of computer are controlled.Requiring of Along with people's is increasingly high, and the function of UltraVNC is nowhere near.

In a lot of multimedia equipments, be furnished with equipment such as wireless voice-transmission system, UltraVNC, wireless handwriting pad, but these systems all are separate, cause deployment cost to raise, and can not use simultaneously; The switching of channel between exhibition booth and the computer when especially connecting projector still need be arrived the dais manual operations, and is extremely inconvenient; Simultaneously, real object exhibition booth volume up to now is all huger, take the dais than multiposition and space; Though therefore increased input, be difficult to get a desired effect.

Summary of the invention

The purpose of the utility model is: a kind of wireless handwriting pad with digital audio-video transmission, real object exhibition booth function is provided, and coelectron blank software work is the excellent digital companion of pocket multimedia presentation; Antijamming capability is strong, and is convenient flexible, realizes the radio multimedium demonstration of digital exhibition booth and electronic document; The speaker can freely be walked about at the making of drawing, bulletin meeting-place, teaching classroom, more can on presentation objects, add annotations and comments easily or draw wireless in good time writing on the blackboard in the realization classroom instruction; Show speech/instructor's charisma extremely easily; Effectively organize, control speech/teaching process, further speaker and audience or student's distance, the speaker again need not be in a rush for various gaudy function blocked operations gaudy again in the conventional multi-media classroom; Also need not stand in stand the irradiation of high light before the projector and cause to amphiblestroid infringement; Sight line and the left side that more need not be afraid of to keep off the hearer are dodged the right side and are hided, and the seamless embedding of original and different pocket had both reduced cost; Make the function at terminal bring into play incisively and vividly again, the real realization to multimedia presentation practicality, convenient, control efficiently.

The technical solution of the utility model is: this wireless handwriting pad comprises wireless terminal device and radio receiver, and wireless terminal device and radio receiver are through radiotelegraphy transmission data; Tie clip formula or head microphone, microcam, Miniature acoustics formation wireless terminal device are installed on keyboard array formula handwriting pad; Handwriting pad controller, image A/D converter, voice A/D, D/A converter, microprocessor MCU, wireless transport module and I/O interface circuit are installed in keyboard array formula handwriting pad are constituted radio receiver; The output of handwriting pad connects microprocessor MCU through the handwriting pad controller; Be connected microprocessor MCU through image A/D converter, voice A/D, D/A converter respectively after the signal output of microcam, microphone and Miniature acoustics is amplified, export through wireless transport module again; Handwriting pad, microcam, Miniature acoustics receive the signal of the wireless transmitter module output of computer end through I/O interface circuit, microprocessor MCU.

Wherein, the I/O interface circuit comprises WirelessUSB or RS232 interface circuit.

The concrete following advantage of the utility model:

1, behind the voice collecting, data are delivered to the computer external audio amplifier and are play through A/D, D/A converter after the amplification.

2, Miniature acoustics is play the sound signal from output terminal (computer) in microprocessor MCU receives and be removable.

3, the image data of microcam collection; The Microsoft company that utilization VFW carries out is the video application Software tool bag under the developing Windows platform; Through AVlcap, realize easily that live video stream is caught with single-frame images to catch beginning and end position that simultaneously can control of video; And added function such as catch like sequence frame image through A/D converter, deliver to the projector presentation that computer connects after the amplification.

4, use both can be carried by plate in the exhibition booth of portable wireless, and it is independent also can microcam and application software to be broken away from wireless handwriting pad, as wired " pocket-type exhibition booth ", portable use.

5, the efficient lithium electricity of the chargeable 1000ma of 2.4G wireless transport module guarantees 20 continuous throughout the twenty-four hour24s, exceedes 300 hours super long standby times.

6, wireless handwriting pad can be controlled PC operating system and application software, implements speech/teaching, and realizes exhibition booth and the wireless seamless switching of computer signalling source between the two through button, realizes Miniature acoustics, the conversion of wireless exhibition booth function.

Description of drawings

Fig. 1 is the circuit block diagram of the utility model.

Fig. 2 is the circuit block diagram of the computer end that cooperates with the utility model.

Among the figure: 1 handwriting pad, 2 microphones, 3 microcams, 4 Miniature acousticses, 5 handwriting pad controllers, 6 image A/D converter, 7 voice A/D converters, 8 D/A converters, 9 microprocessor MCU, 10 wireless transport modules, 11 I/O interface circuits.

Embodiment

Like Fig. 1, shown in 2, this wireless handwriting pad comprises wireless terminal device and radio receiver, and wireless terminal device and radio receiver are through wireless carrier transmission data; Tie clip formula or head microphone 2, microcam 3, Miniature acoustics 4 formation wireless terminal devices are installed on keyboard array formula handwriting pad 1; Handwriting pad controller 5, image A/D converter 6, voice A/D, D/A converter 7, voice D/A converter 8, microprocessor MCU9, wireless transport module 10 and I/O interface circuit 11 are installed in keyboard array formula handwriting pad 1 are constituted radio receiver; The output of handwriting pad 1 connects microprocessor MCU9 through handwriting pad controller 5; After amplifying, the signal output of microcam 3, microphone 2 and Miniature acoustics 4 is connected microprocessor MCU9 through image A/D converter 6, voice A/D converter 7, voice D/A converter 8 respectively, again through wireless transport module 10 outputs; Handwriting pad 1, microcam 3, Miniature acoustics 4 receive the signal of the wireless transmitter module output of computer end through I/O interface circuit 11, microprocessor MCU9.

Wireless terminal device need be accomplished the collection keyboard data; The control handwriting pad is gathered handwriting pad data, speech data, video data in real time, speech data, video data is amplified after the shaping digital signal that is converted into pcm encoder through A/D; Adopt the frequency modulation pattern; The digital signal of gathering is transmitted through the ISM band of 2.4G, and different wireless terminal devices has the different address sign indicating number and radio receiver is corresponding one by one; Radio receiver is based on the HID equipment of WirelessUSB interface or RS232 interface; ISM band through 2.4G receives data; Carry out demodulation, the data separating that receives is come out, keyboard and board data are transferred to computing machine through USB interface; Data are carried out A/D, D/A conversion, after amplifying, deliver to projector, computer external audio amplifier.

Claims

1. be with the wireless handwriting pad of digital audio-video transmission, real object exhibition booth function, it is characterized in that: this wireless handwriting pad comprises wireless terminal device and radio receiver, and wireless terminal device and radio receiver are through radiotelegraphy transmission data; At keyboard array formula handwriting pad (1) tie clip formula or head microphone (2), microcam (3), Miniature acoustics (4) formation wireless terminal device are installed upward; Handwriting pad controller (5), image A/D converter (6), voice A/D converter (7), voice D/A converter (8), microprocessor MCU (9), wireless transport module (10) and I/O interface circuit (11) are installed in keyboard array formula handwriting pad (1) are constituted radio receiver; The output of handwriting pad (1) connects microprocessor MCU (9) through handwriting pad controller (5); After amplifying, the signal output of microcam (3), microphone (2) and Miniature acoustics (4) is connected microprocessor MCU (9) through image A/D converter (6), voice A/D converter (7), voice D/A converter (8) respectively, again through wireless transport module (10) output, reception; Handwriting pad (1), microcam (3), Miniature acoustics (4) receive the signal of the wireless transmitter module output of computer end through I/O interface circuit (11), microprocessor MCU (9).

2. the wireless handwriting pad of band digital audio-video transmission according to claim 1, real object exhibition booth function, it is characterized in that: I/O interface circuit (11) comprises WirelessUSB or RS232 interface circuit.