CN202889494U - An audio-video wireless frequency-modulation receiver with double antennas - Google Patents
An audio-video wireless frequency-modulation receiver with double antennas Download PDFInfo
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- CN202889494U CN202889494U CN 201220496432 CN201220496432U CN202889494U CN 202889494 U CN202889494 U CN 202889494U CN 201220496432 CN201220496432 CN 201220496432 CN 201220496432 U CN201220496432 U CN 201220496432U CN 202889494 U CN202889494 U CN 202889494U
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Abstract
The utility model discloses an audio-video wireless frequency-modulation receiver with double antennas. The receiver comprises a high-frequency band receiving antenna, a first high-frequency tuner, a low-frequency band receiving antenna, a second high-frequency tuner, a digital decoding processor, a microprocessor, an audio driving amplifier, a loudspeaker, a video driving amplifier, and a display screen. The high-frequency band receiving antenna acquires a wireless signal from 2150MHz to 2700MHz and transmits the signal to the first high-frequency tuner to be processed, while the low-frequency band receiving antenna acquires a wireless signal from 900MHz to 2200MHz and transmits the signal to the second high-frequency tuner to be processed. Signals processed by the first high-frequency tuner and the second high-frequency tuner are transmitted to the digital decoding processor to be decoded. Decoded audio data and video data are divided into two signals after processed by the microprocessor. A first audio signal is transmitted to the loudspeaker to be played after processed by the audio driving amplifier, while a second video signal is transmitted to the display screen to be displayed after processed by the video driving amplifier. Therefore, the receiver is compatible with a wireless camera with long-wave band and a wireless camera with short-wave band so as to save cost.
Description
Technical field
The utility model relates to electronic technology field, relates in particular to a kind of double antenna audio-video wireless FM receiver.
Background technology
Existing video equipment is mostly by after wired camera collection vision signal, again by cable transmission to display unit.Along with the development of video processing technique, the cable connection between the various device becomes more and more, becomes increasingly complex, and gives installation, debugging and the mobile very greatly trouble of having brought of display unit and camera.
Given this, the wireless video transmission technology becomes the main flow of video technique development gradually.But present wireless audio and video receiver all is to adopt fixed frequency to communicate, and communicating by letter between the wireless camera of different frequency and the wireless audio and video receiver is restricted, and not only causes equipment to waste, and returns the user and makes troubles.
The utility model content
For the weak point that exists in the above-mentioned technology, the utility model provides a kind of double antenna audio-video wireless FM receiver, can frequency modulation the wireless camera of compatible length wave band, save cost.
For achieving the above object, the utility model provides a kind of double antenna audio-video wireless FM receiver, comprises high band reception antenna, the first tuner, low-frequency range reception antenna, the second tuner, digital decoding processor, microprocessor, audio driven amplifier, loud speaker, video drive amplifier and display screen; Described digital decoding processor comprises first input end, the second input, the 3rd input and output, and described microprocessor comprises input, the first output, the second output and the 3rd output; Described high band reception antenna is electrically connected with the first input end of digital decoding processor by the first tuner, described low-frequency range reception antenna is electrically connected with the second input of digital decoding processor by the second tuner, the 3rd input of digital decoding processor is electrically connected with the first output of microprocessor, and the output of digital decoding processor is electrically connected with the input of microprocessor; The second output of described microprocessor is electrically connected with loud speaker by the audio driven amplifier, and the 3rd output of described microprocessor is electrically connected with display screen by the video drive amplifier.
Wherein, described receiver also comprises frequency display driver and frequency display screen, and described microprocessor also comprises the 4th output, and the 4th output of described microprocessor is electrically connected with frequency display screen by the frequency display driver.
Wherein, described receiver also comprises alarm, and described microprocessor also comprises the 5th output, and the 5th output of described microprocessor is electrically connected with alarm.
The beneficial effects of the utility model are: compared with prior art, the double antenna audio-video wireless FM receiver that the utility model provides, sending into the first tuner by the wireless signal of high band reception antenna collection 2150MHz-2700MHz processes, sending into the second tuner by the wireless signal of low-frequency range reception antenna collection 900MHz-2200MHz simultaneously processes, sending into the digital decoding processor through the signal after the first tuner and the processing of the second tuner decodes, the Voice ﹠ Video data that obtain after the decoding become two-way after microprocessor processes, delivering to loud speaker after first via audio frequency is processed by the audio driven amplifier plays, delivering to display screen after the second road video is processed by the video drive amplifier shows, thereby the wireless camera of compatible length wave band is saved cost.
Description of drawings
Fig. 1 is the block diagram of double antenna audio-video wireless FM receiver of the present utility model.
The main element symbol description is as follows:
10, high band reception antenna 11, the first tuner
12, low-frequency range reception antenna 13, the second tuner
14, digital decoding processor 15, microprocessor
16, audio driven amplifier 17, loud speaker
18, video drive amplifier 19, display screen
20, frequency display driver 21, frequency display screen
22, alarm
Embodiment
In order more clearly to explain the utility model, below in conjunction with accompanying drawing the utility model is done to describe further.
See also Fig. 1, double antenna audio-video wireless FM receiver of the present utility model comprises high band reception antenna 10, the first tuner 11, low-frequency range reception antenna 12, the second tuner 13, digital decoding processor 14, microprocessor 15, audio driven amplifier 16, loud speaker 17, video drive amplifier 18 and display screen 19; Digital decoding processor 14 comprises first input end, the second input, the 3rd input and output, and microprocessor 15 comprises input, the first output, the second output and the 3rd output; High band reception antenna 10 is electrically connected with the first input end of digital decoding processor 14 by the first tuner 11, low-frequency range reception antenna 12 is electrically connected with the second input of digital decoding processor 14 by the second tuner 13, the 3rd input of digital decoding processor 14 is electrically connected with the first output of microprocessor 15, and the output of digital decoding processor 14 is electrically connected with the input of microprocessor 15; The second output of microprocessor 15 is electrically connected with loud speaker 17 by audio driven amplifier 16, and the 3rd output of microprocessor 15 is electrically connected with display screen 19 by video drive amplifier 18.
Situation compared to prior art, the double antenna audio-video wireless FM receiver that the utility model provides, sending into the first tuner 11 by the wireless signal of high band reception antenna 10 collection 2150MHz-2700MHz processes, the wireless signal that gathers 900MHz-2200MHz by low-frequency range reception antenna 12 is simultaneously sent into the second tuner 13 and is processed, sending into digital decoding processor 14 through the signal after the first tuner 11 and 13 processing of the second tuner decodes, the Voice ﹠ Video data that obtain after the decoding become two-way after microprocessor 15 is processed, delivering to loud speaker 17 after first via audio frequency is processed by audio driven amplifier 16 plays, delivering to display screen 19 after the second road video is processed by video drive amplifier 18 shows, thereby the wireless camera of compatible length wave band is saved cost.
In the present embodiment, above-mentioned receiver also comprises frequency display driver 20 and frequency display screen 21, and described microprocessor 15 also comprises the 4th output, and the 4th output of microprocessor 15 is electrically connected with frequency display screen 21 by frequency display driver 20.
In the present embodiment, above-mentioned receiver also comprises alarm 22, and microprocessor 15 also comprises the 5th output, and the 5th output of microprocessor 15 is electrically connected with alarm 22.
The operation principle of this case is: microprocessor 15 is opened the switch of digital decoding processor 14 by the first output, receive signal by tuner, if there is wireless video-audio signal to be received by the first tuner 11 or the second tuner 13, can enter into digital decoding processor 14 (74HC4053D) and be decoded as the Voice ﹠ Video data and process to microprocessor (78P418N), the frequency range of synchronous signal and intensity enter to be sent into frequency and shows that frequently 21 carry out frequency and show after display driver 20 (RT9801BPE) is processed; Microprocessor 15 sends alarm signal by the 5th output and makes alarm 22 warnings simultaneously, the alarm 22 general buzzers that adopt; Simultaneously, audio frequency and video are play the sound that adult's ear can be heard through audio frequency and video starters (3Y31M) and audio-frequency amplifier tube (U2860B) voice emplifying by earphone or audio amplifier; Video shows in the TFT screen display through video amplifier tube (CSC8801A) amplified video simultaneously.
More than disclosed only be several specific embodiment of the present utility model, but the utility model is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection range of the present utility model.
Claims (3)
1. double antenna audio-video wireless FM receiver, it is characterized in that, comprise high band reception antenna, the first tuner, low-frequency range reception antenna, the second tuner, digital decoding processor, microprocessor, audio driven amplifier, loud speaker, video drive amplifier and display screen; Described digital decoding processor comprises first input end, the second input, the 3rd input and output, and described microprocessor comprises input, the first output, the second output and the 3rd output; Described high band reception antenna is electrically connected with the first input end of digital decoding processor by the first tuner, described low-frequency range reception antenna is electrically connected with the second input of digital decoding processor by the second tuner, the 3rd input of digital decoding processor is electrically connected with the first output of microprocessor, and the output of digital decoding processor is electrically connected with the input of microprocessor; The second output of described microprocessor is electrically connected with loud speaker by the audio driven amplifier, and the 3rd output of described microprocessor is electrically connected with display screen by the video drive amplifier.
2. double antenna audio-video wireless FM receiver according to claim 1, it is characterized in that, described receiver also comprises frequency display driver and frequency display screen, described microprocessor also comprises the 4th output, and the 4th output of described microprocessor is electrically connected with frequency display screen by the frequency display driver.
3. double antenna audio-video wireless FM receiver according to claim 2 is characterized in that described receiver also comprises alarm, and described microprocessor also comprises the 5th output, and the 5th output of described microprocessor is electrically connected with alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220496432 CN202889494U (en) | 2012-09-26 | 2012-09-26 | An audio-video wireless frequency-modulation receiver with double antennas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220496432 CN202889494U (en) | 2012-09-26 | 2012-09-26 | An audio-video wireless frequency-modulation receiver with double antennas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202889494U true CN202889494U (en) | 2013-04-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220496432 Expired - Fee Related CN202889494U (en) | 2012-09-26 | 2012-09-26 | An audio-video wireless frequency-modulation receiver with double antennas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202889494U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104796181A (en) * | 2015-03-27 | 2015-07-22 | 中国人民解放军61469部队 | Short-wave double-antenna digital communication system and automatic receiving verification method for the same |
| WO2018107672A1 (en) * | 2016-12-12 | 2018-06-21 | 深圳佳比泰智能照明股份有限公司 | Frequency-modulated receiving circuit, lamp and audio playback method thereof |
-
2012
- 2012-09-26 CN CN 201220496432 patent/CN202889494U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104796181A (en) * | 2015-03-27 | 2015-07-22 | 中国人民解放军61469部队 | Short-wave double-antenna digital communication system and automatic receiving verification method for the same |
| CN104796181B (en) * | 2015-03-27 | 2017-10-10 | 中国人民解放军61469部队 | Shortwave double antenna digital communication system and its method of calibration is received automatically |
| WO2018107672A1 (en) * | 2016-12-12 | 2018-06-21 | 深圳佳比泰智能照明股份有限公司 | Frequency-modulated receiving circuit, lamp and audio playback method thereof |
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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: 20130417 Termination date: 20130926 |