CN2912141Y

CN2912141Y - Microwave radio images transmitter

Info

Publication number: CN2912141Y
Application number: CNU2006200565826U
Authority: CN
Inventors: 李观春
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-03-20
Filing date: 2006-03-20
Publication date: 2007-06-13
Anticipated expiration: 2016-03-20

Abstract

After modulation, a video signal and / or an audio signal transmitted by a transmitting module of a wireless image transmitter are (is) transmitted and received and demodulated by a receiving module. The utility model adopts a microwave wireless transmission to wirelessly transmit the video (image) signal and the audio (sound) signal with a high fidelity, thereby a transmission range of a sight distance (according to the practical circumstance) can reach 50 to 20000 m or more, the transmitting power range of the transmitting module can reach 50 mW to 20W or more, the modulating operating frequency range of the transmitting module can reach 1100 MHz to 2600 MHz. A single-chip microcomputer is connected with at least one selectable signal channel, thus the practical performance is higher.

Description

The microwave wireless picture transmitter

[technical field]

The utility model relates to a kind of audio-visual conveyer, relates in particular to the microwave wireless picture transmitter.

[background technology]

General audio-visual conveyer, announce No. 325371 as Taiwan, it utilizes the frequency of 900MHZ or 2.4GHZ, will be after audio-visual (A/V) signal of Video Recorder (VCR) or satellite receiver (Satellite Receiver) be modulated the back emission, utilize a relative receiver to receive demodulation, reduction or original video-audio signal again, then, input is put general monitor or other have the television set (TV) of A/V terminal again.

There is inconvenience in the audio-visual conveyer of the type structure on using, narrow as carry out the transmitter application space owing to the employing single frequency signal, and transmission range is also shorter.

[summary of the invention]

At the problem of above-mentioned existence, it is wide that the purpose of this utility model designs a kind of line-of-sight transmission scope exactly, and multichannel is selected and the interfering microwave wireless picture transmitter of good resistance.

The utility model adopts following concrete scheme: the utility model microwave wireless picture transmitter comprises transmitter module and receiver module; Wherein the vision signal that emits of transmitter module and/or audio signal are by the emission of modulation back, and the receiver module receiving demodulation relative with it demodulates vision signal and/or audio signal.

Wherein, described transmitter module comprises a frequency mixing module, and tut signal and vision signal are carried out the signal mixed processing; One oscillation module, and a VCO control module, wherein Zhen Dang frequency is controlled by the VCO control module, and oscillatory signal is carried out pre-amplifying module, and amplifying signal is partly launched by power emission;

Described receiver module comprises an amplification filtering module, and its signal that receives is carried out processing such as amplification filtering; Equally also comprise an oscillation module and a VCO control module, wherein, the frequency of oscillation module is controlled by VCO, and single-chip microcomputer is selected by channel VCO is partly carried out detailed control; One demodulation module, the oscillator signal of above-mentioned modulation are demodulated the mixed signal of video, audio frequency by demodulation module after level is amplified later, one video processing module and audio processing modules, with above-mentioned video, the mixed signal of audio frequency restores independent vision signal and audio signal after treatment.

Wherein, but above-mentioned single-chip microcomputer comprises at least one selective channel.

Wherein, sighting distance (looking actual environment) transmission range can reach 50～20000 meters or more than, the transmitting power scope of transmitter module can reach 50mW～20W or more than, the modulation operating frequency range of transmitter module can reach 1100MHz～2600MHz.

The advantage of the utility model microwave wireless picture transmitter is:

1. the utility model has adopted the microwave wireless transmission, with high fidelity wireless transmission vision signal and audio signal, its line-of-sight transmission scope can reach 50～20000 meters or more than;

The transmitting power scope of transmitter module can reach 50mW～20W or more than, the modulation operating frequency range of transmitter module can reach 1100MHz～2600MHz;

3. but connect at least one selective channel by single-chip microcomputer, but Practical Performance is higher like this.

[description of drawings]

Fig. 1 is the structure principle chart of the utility model microwave wireless picture transmitter;

Fig. 2 is the structure principle chart of the transmitter module 1 of the utility model microwave wireless picture transmitter;

Fig. 3 is the structure principle chart of the transmitter module 2 of the utility model microwave wireless picture transmitter.

[embodiment]

Below in conjunction with accompanying drawing principle of the present utility model, structure are further detailed.

As shown in Figure 1, the utility model microwave wireless picture transmitter comprises transmitter module 1 and receiver module 2; Launch by the modulation back from vision signal and/or audio signal that transmitter module 1 emits, receiver module 2 receiving demodulations relative with it demodulate vision signal and/or audio signal.

As shown in Figure 2, the transmitter module 1 of the utility model microwave wireless picture transmitter comprises looks audio processing modules 11, and the voice signal and the vision signal of its input are carried out modulation treatment; One frequency mixing module 12 is carried out the signal mixed processing with tut signal and vision signal; One oscillation module 13, an and VCO control module 14, one single-chip microcomputer 15 is selected by channel VCO control module 14 is carried out detailed control, wherein Zhen Dang frequency is controlled by VCO control module 14, oscillatory signal is carried out preposition amplification by pre-amplifying module 16, and amplifying signal is launched by power emission module 17;

Wherein, single-chip microcomputer described in the present embodiment 15 comprises four channel selector channels, and when pressing several channel buttons, receiver module 2 will scan between several channels.

As shown in Figure 3, described receiver module 2 comprises an amplification filtering module 21, and its signal that receives is carried out processing such as amplification filtering; Equally also comprise an oscillation module 22 and a VCO control module 23, wherein, the frequency of oscillation module 22 is controlled by VCO control module 23, and single-chip microcomputer 25 is selected by channel VCO control module 23 is carried out detailed control; One demodulation module 26, the oscillator signal of above-mentioned modulation is after level is amplified later, demodulate the mixed signal of video, audio frequency by demodulation module 26, one video processing module 271 and an audio processing modules 272, with above-mentioned video, the mixed signal of audio frequency restores independent vision signal and audio signal after handling.

Its sighting distance (looking actual environment) transmission range can reach 50～20000 meters or more than, the transmitting power scope of transmitter module can reach 50mW～20W or more than, the modulation operating frequency range of transmitter module can reach 1100MHz～2600MHz.

Wherein, but the last single-chip microcomputer 25 in the present embodiment connects at least three selective channels.

Because the advantage of the utility model microwave wireless picture transmitter is:

The transmitting power scope of described transmitter module can reach 50mW～20W or more than, the modulation operating frequency range of transmitter module can reach 1100MHz～2600MHz;

3. by single-chip microcomputer 15, but 25 connect at least one selective channel, but Practical Performance is higher like this.

The above person is the utility model most preferred embodiment only, is not to be used to limit scope of the present utility model, and all equivalences of being done according to the utility model claim change or modify, and are all the utility model and contain.

Claims

1, the microwave wireless picture transmitter comprises transmitter module and receiver module, its characteristics are: vision signal that transmitter module emits and/or audio signal are by the emission of modulation back, the receiver module receiving demodulation relative with it demodulates vision signal and/or audio signal.

2, microwave wireless picture transmitter according to claim 1, it is characterized in that: transmitter module comprises that an audio processing modules carries out modulation treatment to the voice signal and the vision signal of its input; One frequency mixing module is carried out the signal mixed processing with tut signal and vision signal; One oscillation module, and a VCO control module, wherein Zhen Dang frequency is controlled by the VCO control module, and oscillatory signal is carried out pre-amplifying module, and amplifying signal is partly launched by power emission; Described receiver module comprises an amplification filtering module, and its signal that receives is carried out processing such as amplification filtering; Equally also comprise an oscillation module and a VCO control module, wherein, the frequency of oscillation module is controlled by VCO, and single-chip microcomputer is selected by channel VCO is partly carried out detailed control; One demodulation module, the oscillator signal of above-mentioned modulation are demodulated the mixed signal of video, audio frequency by demodulation module after level is amplified later, video processing module and audio processing modules, with above-mentioned video, the mixed signal of audio frequency restores independent vision signal and audio signal after treatment.

3, as microwave wireless picture transmitter as described in the claim 2, it is characterized in that: but described single-chip microcomputer comprises at least one selective channel.

4, microwave wireless picture transmitter according to claim 1 is characterized in that: its line-of-sight transmission scope can reach 50～20000 meters or more than.

5, microwave wireless picture transmitter according to claim 1 is characterized in that: the transmitting power scope of transmitter module can reach 50mW～20W or more than.

6, microwave wireless picture transmitter according to claim 1, it is characterized in that: the modulation operating frequency range of transmitter module can reach 1100MHz～2600MHz.