CN201196774Y - Wireless writing pad with digital speech transmission - Google Patents
Wireless writing pad with digital speech transmission Download PDFInfo
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- CN201196774Y CN201196774Y CNU2008200342742U CN200820034274U CN201196774Y CN 201196774 Y CN201196774 Y CN 201196774Y CN U2008200342742 U CNU2008200342742 U CN U2008200342742U CN 200820034274 U CN200820034274 U CN 200820034274U CN 201196774 Y CN201196774 Y CN 201196774Y
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- mcu
- handwriting pad
- digital speech
- interface circuit
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Abstract
The utility model discloses a wireless handwriting pad with digital voice transmission, which comprises wireless terminal equipment and wireless receiving equipment, wherein the wireless terminal equipment and the wireless receiving equipment transmit data through a wireless carrier. The wireless terminal equipment comprises a handwriting pad, a microphone, a keyboard array, an MCU and a wireless transmission module, wherein an output of the handwriting pad is connected with the MCU through a handwriting pad controller; an output of the microphone is amplified, is subject to A/D conversion and then is connected with the MCU; the keyboard array is connected with the MCU; an output of the MCU is connected with an input end of the wireless transmission module; the wireless receiving equipment comprises a wireless transmission module, an MCU and an interface circuit for connecting an I/O port of a computer, wherein an output of the wireless transmission module is connected with the MCU; and the MCU is connected with the interface circuit. The equipment has strong anti-jamming ability, reduces the cost, also perfectly plays the function of a terminal, and truly realizes the control to multimedia.
Description
Technical field
The utility model belongs to the computer peripheral equipment field, specifically is a kind of wireless handwriting pad with the digital speech transmission.
Background technology
At present, the wireless computer telepilot has been widely used in Industry Control and the teaching.Remote-control handle sends infrared or wireless control signal, after the Computerized remote-control receiver is received this signal, by the corresponding self-defined study of button, again this signal is discerned processing, thereby realizes the whole resources of computer are controlled.Along with people's requirement is more and more higher, the function of wireless computer telepilot is nowhere near.In the process of using, need to increase more Word message, can carry out remote voice transfer.In a lot of multimedia equipments, be furnished with equipment such as wireless voice-transmission system, wireless UltraVNC, wireless handwriting pad, these systems are separate, cause cost to raise, and can not use simultaneously, though increased input like this, do not get a desired effect.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the utility model proposes the wireless handwriting pad that a kind of new band digital speech transmits, concrete technical scheme is as follows:
The wireless handwriting pad of band digital speech transmission comprises wireless terminal device, radio receiver, and wireless terminal device and radio receiver transmit data by wireless carrier.Wireless terminal device comprises handwriting pad, microphone, keyboard array, MCU and wireless transport module, the output of handwriting pad connects MCU, microphone by the handwriting pad controller output amplification back connects MCU, keyboard array connection MCU by A/D conversion back, and the output of MCU connects the input end of wireless transport module; Radio receiver comprises wireless transport module, MCU and is connected the interface circuit of computer I/O mouth that the output of wireless transport module connects MCU, MCU connecting interface circuit.
As improvement, described radio receiver also comprises the voice D/A converter, and MCU by the D/A change-over circuit, delivers to audio amplifier with digital voice data after amplifying.
Described wireless transport module is the 2.4G radio transmission apparatus.
The interface circuit that connects computer I/O mouth is RS232 interface circuit or usb circuit, or the two has.What described RS232 interface circuit adopted is the HWD232 chip.What described usb circuit adopted is the CY7C63723 chip.
The MCU of described wireless terminal device adopts be P89LPC930, handwriting pad controller adopt what be that TSC2046 chip, 2.4G radio transmission apparatus adopt is the NRF24E1 chip; The shared NRF24E1 chip of the wireless transport module of described radio receiver and MCU.
The utility model also has the function of wireless transmission digital speech and handwriting pad data except the function with wireless computer telepilot.This device combines wireless computer remote control, wireless digital voice and wireless handwriting pad first, can realize the function of intelligent wireless keyboard, wireless handwriting pad and wireless digital voice transfer.Computing machine is connected with other electric equipment orders, as light fixture, DVD, sound-track engraving apparatus, projector, stereo set or the like add wireless handwriting pad input, the multimedia of making can be brought into play incisively and vividly.The wireless handwriting pad of band digital speech transmission concentrates in together the function of keyboard, voice and handwriting pad, just can replace three original wireless devices with a wireless terminal, antijamming capability is strong, both reduced cost, make the function of this terminal bring into play incisively and vividly again, really realize multimedia control.
Description of drawings
Fig. 1 is a system chart of the present utility model
Fig. 2 is the circuit block diagram of wireless terminal device
Fig. 3 is the circuit block diagram of radio receiver
Radio receiver 1, wireless terminal device 2
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and embodiment.
1. wireless terminal device
Wireless terminal device need be finished the collection keyboard data, and the control handwriting pad is gathered the handwriting pad data in real time, gather speech data, with be converted into the digital signal of pcm encoder after the speech data amplification by A/D, adopt the frequency modulation pattern, three kinds of digital signals are transmitted by the ISM band of 2.4G.Different wireless terminal devices has different address codes and radio receiver is corresponding one by one.
2. based on the radio receiver of USB interface or RS232 interface
Radio receiver is based on the HID equipment (because USB interface is with its various advantages, application surface is more and more wider, and the radio receiver in this example includes only usb circuit) of USB interface or RS232 interface.ISM band by 2.4G receives data, carries out demodulation; The data separating that receives is come out.Keyboard and board data are transferred to computing machine by USB interface, and the data of pcm encoder are carried out the D/A conversion, deliver to audio amplifier after amplifying.
3. the user software of computing machine
User software on the computing machine need realize the driver of USB device, subscriber administration interface, and button is provided with function, button recognition function, the data identification function of handwriting pad.Because software section is more common in prior art, neither protection domain of the present utility model, so do not do too much explanation at this.
With reference to figure 1
The utility model comprises wireless terminal device and radio receiver two parts of band digital speech transmission.
The wireless handwriting pad equipment of band digital speech transmission sends data (comprising handwriting pad data, real-time voice data and keyboard data) by the wireless carrier of 2.4G.After radio receiver receives data, handwriting pad data and button data are delivered to computing machine by USB interface, the data that receive by Computer Processing; Digital voice data is carried out the D/A conversion, after amplifying, deliver to audio amplifier.
With reference to figure 2
Wireless terminal device comprises handwriting pad, microphone, keyboard array, MCU and wireless transport module, the output of handwriting pad connects MCU, microphone by the handwriting pad controller output connects MCU by A/D conversion back connection MCU, keyboard array, and the output of MCU connects the input end of wireless transport module; Wireless transport module, MCU and usb circuit, the output of wireless transport module connects MCU, MCU and connects usb circuit.
What the handwriting pad controller adopted is the TSC2046 chip, this chip is realized the control to handwriting pad, give MCU-P89LPC930 after the state of handwriting pad encoded, voice signal is delivered to MCU after sampling by A/D, the keyboard data of MCU sampling simultaneously, formulate Data Transport Protocol, three kinds of data are sent to radio receiver by the NRF24E1 chip.By MCU each built-up circuit is controlled, because Control Software is not a protection domain of the present utility model, so do not do too much explanation at this.
With reference to figure 3
Radio receiver comprises wireless transport module, MCU, usb circuit, D/A change-over circuit and amplifying circuit, the output of wireless transport module connects MCU, MCU the speech data that receives is passed through the D/A change-over circuit, deliver to audio amplifier after the amplification, handwriting pad and keyboard data are delivered to usb circuit.
2.4G radio transmission apparatus and MCU all adopt the NRF24E1 chip to realize, the speech data that receives is delivered to loudspeaker by the D/A change-over circuit of design voluntarily, the handwriting pad and the keyboard data that receive are passed through USB chip for driving CY7C63723, CY7C63723 delivers to USB interface of computer with the data that receive, and by computing machine data is handled.By MCU each built-up circuit is controlled, because Control Software is not a protection domain of the present utility model, so do not do too much explanation at this.
Claims (9)
1. wireless handwriting pad with digital speech transmission, comprise wireless terminal device and radio receiver, wireless terminal device and radio receiver transmit data by wireless carrier, it is characterized in that described wireless terminal device comprises handwriting pad, microphone, keyboard array, MCU and wireless transport module, the output of handwriting pad connects MCU, microphone by the handwriting pad controller output amplification back connects MCU, keyboard array connection MCU by A/D conversion back, and the output of MCU connects the input end of wireless transport module; Radio receiver comprises the interface circuit of wireless transport module, MCU, connection computer I/O mouth, and the output of wireless transport module connects MCU, MCU handwriting pad data and keyboard data are delivered to interface circuit.
2. the wireless handwriting pad of band digital speech transmission according to claim 1 is characterized in that described radio receiver also comprises voice D/A change-over circuit, and MCU by the D/A change-over circuit, delivers to audio amplifier with speech data after the amplification.
3. the wireless handwriting pad of band digital speech transmission according to claim 1 and 2 is characterized in that described wireless transport module is the 2.4G radio transmission apparatus.
4. the wireless handwriting pad of band digital speech transmission according to claim 1 and 2 is characterized in that the interface circuit that connects computer I/O mouth comprises the RS232 interface circuit.
5. the wireless handwriting pad of band digital speech transmission according to claim 1 and 2 is characterized in that the interface circuit that connects computer I/O mouth comprises usb circuit.
6. the wireless handwriting pad of band digital speech transmission according to claim 4 is characterized in that the interface circuit that connects computer I/O mouth comprises usb circuit.
7. the wireless handwriting pad of band digital speech transmission according to claim 4, what it is characterized in that described RS232 interface circuit employing is the HWD232 chip.
8. the wireless handwriting pad of band digital speech transmission according to claim 5, what it is characterized in that described usb circuit employing is the CY7C63723 chip.
9. the wireless handwriting pad of band digital speech according to claim 3 transmission, it is characterized in that the MCU of described wireless terminal device adopts be P89LPC930, handwriting pad controller adopt what be that TSC2046 chip, 2.4G radio transmission apparatus adopt is the NRF24E1 chip; The shared NRF24E1 chip of the wireless transport module of described radio receiver and MCU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200342742U CN201196774Y (en) | 2008-04-21 | 2008-04-21 | Wireless writing pad with digital speech transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200342742U CN201196774Y (en) | 2008-04-21 | 2008-04-21 | Wireless writing pad with digital speech transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201196774Y true CN201196774Y (en) | 2009-02-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200342742U Expired - Fee Related CN201196774Y (en) | 2008-04-21 | 2008-04-21 | Wireless writing pad with digital speech transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201196774Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102611544A (en) * | 2012-02-24 | 2012-07-25 | 康佳集团股份有限公司 | Wireless voice transmission system |
-
2008
- 2008-04-21 CN CNU2008200342742U patent/CN201196774Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102611544A (en) * | 2012-02-24 | 2012-07-25 | 康佳集团股份有限公司 | Wireless voice transmission system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090218 Termination date: 20100421 |