CN2610571Y

CN2610571Y - Multifunction radio control device of multimedia demonstration system

Info

Publication number: CN2610571Y
Application number: CNU03233821XU
Authority: CN
Inventors: 勾延根; 龙伟; 李瑾坤
Original assignee: YAAN XIBU INTER NETWORK COMMUNICATION INDUSTRIAL REGION Co Ltd
Current assignee: YAAN XIBU INTER NETWORK COMMUNICATION INDUSTRIAL REGION Co Ltd
Priority date: 2003-04-04
Filing date: 2003-04-04
Publication date: 2004-04-07
Anticipated expiration: 2013-04-04

Abstract

The utility model relates to a multifunctional wireless control device of the multimedia demonstration system, comprising an emitter, a receiver and a driving control three parts, wherein the emitter and the receiver employ the meter wave communication; the emitter is a small-sized remote controller and provided with a laser indicating switch inside besides coding and modulating the emission; the receiver finishes receiving the demodulation, the decoding and the transmission, and is connected on a serial port of the computer and supplied the power directly through a control line of the serial port of the computer without being connected with the power supply additionally; the driving control is a CD software arranged on the computer; the emitter and the receiver are corresponded according to each group; the key-presses on the emitter except the laser indicating switch can all simulate any combined key-press of the computer through the user-defined, in order to achieve the purpose of randomly controlling the demonstration process and the laser prompt according to the requirement of the user. The utility model realizes the best demonstration effect of the wireless demonstration and the wireless communication, and the whole demonstration process is natural, gentle and humanized.

Description

The multifunction wireless control device of multimedia presentation system

One, technical field

The utility model relates to the auxiliary equipment of computer, specifically is a kind of multifunction wireless control system of multimedia presentation system.

Two, background technology

Usually, when carrying out multimedia presentation, in order to control the demonstration progress, the demonstrator must be in person with mouse or keyboard operating computer closely.Therefore in common presentation process, the demonstrator always can only near movable zone very little computer, even sits in the computer next door.So not only limit to demonstrator's self activity space, also increased demonstrator and spectators' distance, made lively multimedia presentation originally lack the important affinity and the ditch general character.Same problem also appears at many occasions such as multimedia teaching, multimedia conferencing, electronic demonstration.For needing a kind of control device, head it off controls.Chinese patent 01232523 " wireless bulletin indication remote control " makes the operator can be in radio transmits the transmissible scope in unit movable arbitrarily.But the receiver of this device needs special power supply setting, and structure is comparatively complicated, and does not have the laser indication.

Three, summary of the invention

The purpose of this utility model provides a kind of simple in structure, easy to use, and receiver does not need special power supply, the self-defined computer button of energy, the control device of arbitrarily controlling presentation process and adopting laser to indicate.

The purpose of this utility model reaches like this; A kind of multifunction wireless control device of multimedia presentation system is made of reflector, receiver and drive controlling three parts.Reflector adopts metric wave to communicate by letter with receiver.Reflector has coding and modulate emission two parts, and receiver has receiving demodulation, decoding and transmission three parts, and drive controlling is meant installation drive software on computers, i.e. CD.Reflector is built-in with a laser designator, and a laser knowledge switch and plurality of keys are arranged on the panel.The circuit of receiver is divided into wireless signal and is converted to digital signal and exchanges two parts with computerized information, and receiver is directly powered by the control line of serial ports of computers.Receiver adopts the direct power supply of the control line of serial ports of computers to be meant on the control line of serial ports and sends high level, the burst power supply.Each receiver can only receive the signal of a specific emitter, and reflector and receiver are corresponding one by one by every group.Button on the reflector except that the laser designator switch can both be self-defined, the combination in any button of simulation computer.

This use is novel to have the following advantages;

1, receiver does not need to connect in addition power supply, and is simple in structure, reliable, easy to use.

2, the button except that the laser designator switch can be by self-defined on the reflector, the combination in any button of simulation computer, thus reach the purpose of arbitrarily controlling presentation process by customer requirements.Realized that demonstration is wireless, linked up wireless the best demonstration effect, natural, affine, the hommization of whole teaching demonstration process.

3, in presentation process, except the control presentation process, the utility model has also been realized the integrated of demonstration control and laser indication, uses laser to indicate and demonstrates prompting, make presentation process more lively, flexible, give top priority to what is the most important.

4, reflector is connected by wireless telecommunications with receiver, and by wireless telecommunications are encoded, each receiver can only receive the signal of a specific emitter, makes reflector and receiver corresponding one by one by every group, does not disturb mutually.

5, metric wave communication is adopted in emission, reception, and electromagnetic equipment (as mobile phone, call etc.) commonly used is had no effect.

Four, description of drawings

Fig. 1 is the utility model workflow block diagram.

Fig. 2 is transmitter circuit figure of the present utility model.

Fig. 3 is the circuit diagram that wireless signal is converted into digital signal in the circuit diagram of receiver of the present utility model.

Fig. 4 be in the circuit diagram of receiver of the present utility model with the circuit diagram of computer coupling part.

Five, embodiment

Accompanying drawing has provided an embodiment of the present utility model.

Referring to Fig. 1.

Fig. 1 has provided the course of work of this device.Reflector is modulated on the certain frequency through behind the corresponding keyboard-coding, by emitting radio wave at spatial transmission.After receiver receives radio wave, after receiving demodulation, decoding, radio signal is converted into digital signal, delivers to serial ports of computers.In computer, detect serial data, judge button by drive software, send press key message then, control current demoware and respond.

Referring to Fig. 2.

Respectively finish corresponding with the module PT2272 among Fig. 3 of module PT2262 transmits and receives among the figure, and DV2 is a LASER Discharge Tube.The radio wave of reflector emission is a metric wave.With the button on the panel computer keyboard is carried out the self-defined of personalization.

Referring to Fig. 3, Fig. 4.

After receiver receives wireless signal through antenna TX, receive by module PT2272 is corresponding, with the signal of required fixed frequency through processing and amplifying, convert digital signal to and send into serial ports of computers by 232 transmission and carry out information exchange.Wherein LM358 place circuit is converted into digital signal with wireless signal and exports to computer.A789C2051 is used to carry out the single-chip microcomputer that voltage resets, and MAX232 is the module that is used for level conversion, and CON7 is a voltage divider, and required power supply is supplied with thus on single-chip microcomputer and the receiver.DB9 is the computer by serial connector.Receiver carries 9 pin female connectors, directly links to each other with standard computer male serial ports connector.If needing increases coverage, can use connecting line, connecting line must be that the male of MODEM connecting line (end directly is connected with end for an end male, an end female) connecting line of standard is connected with this receiver, the other end is connected with computer by serial.Computer requires to have 9 pin male connectors.

The concrete course of work is as follows: transmitter is a Mini-Remote Control Unit, and a plurality of function buttons are arranged in the remote control, and the user can arbitrarily define it at any time, any keyboard of simulation computer.The user is by operation transmitter button, can carry out operations such as upper and lower page turning in the presentation process according to self-defining function control computer.Simultaneously, integrated generating laser on the reflector, and be provided with a switch it is controlled, can realize demonstrating prompt facility.Reflector is connected by wireless telecommunications with receiver, and by wireless telecommunications are encoded, each receiver can only receive the signal of a specific emitter, makes reflector and receiver corresponding one by one by every group.Receiver does not need external power supply, directly is connected on the serial ports of computer, will send into computer by 232 transmission after the signal decoding that receive and the digitized processing.By with the purpose that reaches the far distance controlled computer operation cooperating of software.Popular computer system software such as Windows98/SE, WindowsMe, Windows2000, WindowsXP etc. are indispensable.

The drive control software CD includes drive software, must install on the computer that uses this device, uses jointly with the system that has demoware.(system that contains demoware comprises PowerPoint, Microsoft Word, Adobe acrobat or the like).The installation of drive control software does not have specific (special) requirements.Receiver is imported computer rear drive Control Software with useful information and is started, after testing serial data, judge the layout setting of button after, carry out interface detection, promptly send the Windows press key message, the current demoware of control responds.

Claims

1. the multifunction wireless control device of multimedia presentation system, constitute by reflector, receiver and drive controlling three parts, reflector adopts metric wave to communicate by letter with receiver, reflector is meant coding and modulate emission two parts, receiver is meant receiving demodulation, decoding and transmission three parts, drive controlling is meant installation CD on computers, it is characterized in that: reflector is built-in with a laser designator, and a laser indicator cock and plurality of keys are arranged on the panel; The circuit of receiver is divided into wireless signal and is converted to digital signal and exchanges two parts with computerized information, and receiver is directly powered by the control line of serial ports of computers.

2. multifunction wireless control device as claimed in claim 1 is characterized in that: described receiver adopts the direct power supply of the control line of serial ports of computers to be meant on the control line of serial ports and sends high level, the burst power supply.

3. as claim 1 and 2 described multifunction wireless control device, it is characterized in that; Each receiver can only receive the signal of a specific emitter, and reflector and receiver are corresponding one by one by every group.