CN201222732Y - Sound remote controller and audiovisual system matched with the same - Google Patents
Sound remote controller and audiovisual system matched with the same Download PDFInfo
- Publication number
- CN201222732Y CN201222732Y CNU2008200227405U CN200820022740U CN201222732Y CN 201222732 Y CN201222732 Y CN 201222732Y CN U2008200227405 U CNU2008200227405 U CN U2008200227405U CN 200820022740 U CN200820022740 U CN 200820022740U CN 201222732 Y CN201222732 Y CN 201222732Y
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- China
- Prior art keywords
- circuit
- audio
- frequency carrier
- remote controller
- sound
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- Expired - Fee Related
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Abstract
The utility model relates to an audio remote controller and an audio-visual system which is matched with the audio remote controller, the remote controller is characterized by comprising a receiving and amplifying circuit of wireless high-frequency carrier signals, a demodulation filter circuit which can extract audio signals, a volume amplifying and control circuit, a speaker or an audio signal outlet which is matched with a headphone plug, the audio-visual system is characterized by comprising a high-frequency carrier generating unit, a modulation circuit which loads the audio signals to a high-frequency carrier and a transmitting circuit of the wireless high-frequency carrier signals. The audio signals of the audio-visual system are loaded on the high-frequency carrier and are wirelessly transmitted, the remote controller separates and extracts the audio signals after receiving the high-frequency carrier, and the signals sound through a speaker on the remote controller or the sound is tuned in lastly through plugging the headphone on the audio signal outlet after being amplified, and the sound of the audio-visual system can be clearly tuned in a noisy environment, which realizes the aim of eliminating noise interference, can clearly tunes the sound of the audio-visual system in a noisy environment, and simultaneously prevents the too loud sound of the audio-visual system from interfering others.
Description
Technical field
The utility model relates to audiovisual system and remote controller technical field thereof, but specifically is a kind of sound remote controller of wireless reception audiovisual system audio signal and the audiovisual system that cooperates with it.
Background technology
The remote-controller function of present control audiovisual system (comprising family's TV, vehicle-mounted audiovisual system etc.) is all very single, can only be to the startup of audiovisual system, close, volume, demonstration situation and program selection etc. control.When surrounding environment is more noisy, do not hear the sound of audiovisual system, only regulate the volume of audiovisual system by remote controller, can not get rid of extraneous interference, but also can impact other people because volume is excessive.
The utility model content
In order to overcome the shortcoming that above-mentioned prior art exists, the purpose of this utility model is to provide a kind of sound remote controller, and it not only can carry out controlled in wireless to audiovisual system, also can be by the audio signal of wireless receiving audiovisual system.
The audiovisual system that provides a kind of and above-mentioned sound remote controller to cooperate also is provided the purpose of this utility model, and it can be gone out the audio signal wireless transmission, to realize sending audio signal to sound remote controller.
The technical solution of the utility model is:
Sound remote controller, comprise that a wireless high-frequency carrier signal receives and amplifying circuit, this high-frequency carrier signal receives and the output of amplifying circuit connects the demodulation filter circuit that audio signal can be extracted, the output of this demodulation filter circuit connects volume and amplifies and control circuit, and volume is amplified and the output connection loud speaker of control circuit or the audio signal outlet that cooperates with headset plug.
In this sound remote controller, described high-frequency carrier signal reception and amplifying circuit are connected with a FM circuit of regulating receive frequency.
Audiovisual system with above-mentioned sound remote controller cooperates comprises the audio frequency pre-amplification circuit, and its output is connected with volume control amplifying circuit; Described volume control amplification circuit output end is connected with the loud speaker of audiovisual system; Also comprise a high frequency carrier generation unit, the high frequency carrier generation unit is connected with a modulation circuit that loads audio signal on high frequency carrier, and this modulation circuit input is connected with the output of described audio frequency pre-amplification circuit; The output of modulation circuit connects wireless high-frequency carrier signal radiating circuit.
In this audiovisual system, described high frequency carrier generation unit is connected with a FM circuit of regulating carrier frequency.
Operation principle is as follows:
After opening audiovisual system, the high frequency carrier generation unit can produce a high frequency carrier, and modulation circuit will be loaded on the high frequency carrier by the audio signal of audio frequency pre-amplification circuit output.Launch by wireless high-frequency carrier signal radiating circuit small-power then.The high-frequency carrier signal of sound remote controller receives and amplifying circuit receives high-frequency carrier signal, go out audio signal by demodulation filter circuit separation and Extraction then, and amplify and control circuit is delivered to the loud speaker sounding with audio signal, or be delivered to the earphone that is plugged in the audio signal outlet through volume.
During use, can adjust the frequency of the high frequency carrier of audiovisual system emission, and adjust the receive frequency of sound remote controller accordingly, make tranmitting frequency, receive frequency unanimity; Can get rid of the interference with other electromagnetic systems like this, make the sound of hearing by sound remote controller more clear.
The beneficial effects of the utility model are: can listen the sound of getting audiovisual system by sound remote controller, realize people and sound source closely, thereby reach the purpose of getting rid of noise jamming, also can clearly hear the sound of audiovisual system in noisy environment; Avoid the audiovisual system volume excessive and disturb other people simultaneously.Be applicable to various audiovisual systems, especially home television set, vehicle-mounted audiovisual system etc.
Description of drawings
Fig. 1 is a schematic block circuit diagram of the present utility model;
Embodiment
As shown in Figure 1, this sound remote controller, comprise that a wireless high-frequency carrier signal receives and amplifying circuit, this high-frequency carrier signal receives and the output of amplifying circuit connects the demodulation filter circuit that audio signal can be extracted, the output of this demodulation filter circuit connects volume and amplifies and control circuit, and volume is amplified and the output connection loud speaker of control circuit or the audio signal outlet that cooperates with headset plug.Wherein, high-frequency carrier signal reception and amplifying circuit are connected with a FM circuit of regulating receive frequency.Other technologies are same as the prior art.
Audiovisual system with above-mentioned sound remote controller cooperates comprises the audio frequency pre-amplification circuit, and its output is connected with volume control amplifying circuit; Described volume control amplification circuit output end is connected with the loud speaker of audiovisual system; Also comprise a high frequency carrier generation unit, the high frequency carrier generation unit is connected with a modulation circuit that loads audio signal on high frequency carrier, and this modulation circuit input is connected with the output of described audio frequency pre-amplification circuit; The output of modulation circuit connects wireless high-frequency carrier signal radiating circuit.Wherein, the high frequency carrier generation unit is connected with a FM circuit of regulating carrier frequency.Other technologies are same as the prior art.
Operation principle is as follows:
After opening audiovisual system, the high frequency carrier generation unit can produce a high frequency carrier, and modulation circuit will be loaded on the high frequency carrier by the audio signal of audio frequency pre-amplification circuit output.Launch by wireless high-frequency carrier signal radiating circuit small-power then.The high-frequency carrier signal of sound remote controller receives and amplifying circuit receives high-frequency carrier signal, go out audio signal by demodulation filter circuit separation and Extraction then, and amplify and control circuit is delivered to the loud speaker sounding with audio signal, or be delivered to the earphone that is plugged in the audio signal outlet through volume.
During use, can adjust the frequency of the high frequency carrier of audiovisual system emission, and adjust the receive frequency of sound remote controller accordingly, make tranmitting frequency, receive frequency unanimity; Can get rid of the interference with other electromagnetic systems like this, make the sound of hearing by sound remote controller more clear.
Claims (4)
1, sound remote controller, it is characterized in that: comprise that a wireless high-frequency carrier signal receives and amplifying circuit, this high-frequency carrier signal receives and the output of amplifying circuit connects the demodulation filter circuit that audio signal can be extracted, the output of this demodulation filter circuit connects volume and amplifies and control circuit, and volume is amplified and the output connection loud speaker of control circuit or the audio signal outlet that cooperates with headset plug.
2, sound remote controller according to claim 1 is characterized in that: described high-frequency carrier signal reception and amplifying circuit are connected with a FM circuit of regulating receive frequency.
3, a kind of audiovisual system that cooperates with the described sound remote controller of claim 1 comprises the audio frequency pre-amplification circuit, and its output is connected with volume control amplifying circuit; Described volume control amplification circuit output end is connected with the loud speaker of audiovisual system, it is characterized in that: also comprise a high frequency carrier generation unit, the high frequency carrier generation unit is connected with a modulation circuit that loads audio signal on high frequency carrier, and this modulation circuit input is connected with the output of described audio frequency pre-amplification circuit; The output of modulation circuit connects wireless high-frequency carrier signal radiating circuit.
4, audiovisual system according to claim 3 is characterized in that: described high frequency carrier generation unit is connected with a FM circuit of regulating carrier frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200227405U CN201222732Y (en) | 2008-05-23 | 2008-05-23 | Sound remote controller and audiovisual system matched with the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200227405U CN201222732Y (en) | 2008-05-23 | 2008-05-23 | Sound remote controller and audiovisual system matched with the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201222732Y true CN201222732Y (en) | 2009-04-15 |
Family
ID=40576234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200227405U Expired - Fee Related CN201222732Y (en) | 2008-05-23 | 2008-05-23 | Sound remote controller and audiovisual system matched with the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201222732Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102394848A (en) * | 2011-02-25 | 2012-03-28 | 中国科学院上海微系统与信息技术研究所 | Method and device for generating audio modulation THz wave |
| CN103945253A (en) * | 2014-04-04 | 2014-07-23 | 北京智谷睿拓技术服务有限公司 | Volume control method and device and multimedia playing control method and device |
| CN104669826A (en) * | 2015-01-30 | 2015-06-03 | 哈尔滨工程大学 | Examination equipment based on radio remote control |
-
2008
- 2008-05-23 CN CNU2008200227405U patent/CN201222732Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102394848A (en) * | 2011-02-25 | 2012-03-28 | 中国科学院上海微系统与信息技术研究所 | Method and device for generating audio modulation THz wave |
| CN102394848B (en) * | 2011-02-25 | 2014-12-10 | 中国科学院上海微系统与信息技术研究所 | Method and device for generating audio modulation THz wave |
| CN103945253A (en) * | 2014-04-04 | 2014-07-23 | 北京智谷睿拓技术服务有限公司 | Volume control method and device and multimedia playing control method and device |
| CN103945253B (en) * | 2014-04-04 | 2018-02-02 | 北京智谷睿拓技术服务有限公司 | Method for controlling volume and equipment, control method for playing multimedia and equipment |
| US10312874B2 (en) | 2014-04-04 | 2019-06-04 | Beijing Zhigu Rui Tuo Tech Co., Ltd | Volume control methods and devices, and multimedia playback control methods and devices |
| CN104669826A (en) * | 2015-01-30 | 2015-06-03 | 哈尔滨工程大学 | Examination equipment based on radio remote control |
| CN104669826B (en) * | 2015-01-30 | 2016-09-14 | 哈尔滨工程大学 | A kind of based on radio controlled examination equipment |
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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: 20090415 Termination date: 20100523 |