CN105554425A - Public television sound accompanying and automatic power-on/off device - Google Patents
Public television sound accompanying and automatic power-on/off device Download PDFInfo
- Publication number
- CN105554425A CN105554425A CN201610090403.9A CN201610090403A CN105554425A CN 105554425 A CN105554425 A CN 105554425A CN 201610090403 A CN201610090403 A CN 201610090403A CN 105554425 A CN105554425 A CN 105554425A
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- CN
- China
- Prior art keywords
- sound
- public
- audio signal
- signal
- reflector
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
- H04N5/602—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals for digital sound signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/439—Processing of audio elementary streams
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/63—Generation or supply of power specially adapted for television receivers
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
Abstract
The invention discloses a public television sound accompanying and automatic power-on/off device. The public television sound accompanying and automatic power-on/off device comprises a sound playing carrier, a power supply module, a sound signal reader and an audio signal FM transmitter, wherein the sound playing carrier has an FM radio function; the power supply module, the sound signal reader and the audio signal FM transmitter are arranged in the shell; a sound receiving and converting module is arranged in the sound playing carrier; an output end of the sound signal reader is connected with an input end of the audio signal FM transmitter; and the audio signal FM transmitter is communicated with the sound playing carrier through a wireless network. Through adoption of the public television sound accompanying and automatic power-on/off device, the media sound demands of different people on public occasions can be met, and the functions of effectively saving energy, lowering consumption and protecting equipment can be realized. The public television sound accompanying and automatic power-on/off device is arranged outside an existing public television body without modification of the television body. The public television sound accompanying and automatic power-on/off device has the characteristics of small size, comprehensive performance, high practicability, low cost and easiness in mounting and debugging.
Description
Technical field
The present invention relates to electronic technology field, particularly one is applied to intelligent auxiliary facility in public TV.
Background technology
Television set is one of converter tools that in daily life, people are important, particularly in public places in television set, also there is certain Communications Functions.But the public TV play in public arena can only see the broadcasting pictures of TV mostly, and its sound cannot be heard, even if public TV can play out sound, also cannot be able to catch because of the noise of surrounding (public place such as such as high ferro, subway, subway track, coach, bus, dining room, aunt square dance, city commercial LED screen); If tuned up by television sound, then can produce noise pollution to unwanted crowd again.Therefore the television set of public place gives social public resource as one, really cannot play its effect of publicity by the restriction of people's individual needs and rights and interests demand, can only become a kind of ornaments.In addition, the public TV of public arena, general without personal management, at nobody time, public TV is also working, and both wastes electric energy, again loss equipment.
Summary of the invention
The technical issues that need to address of the present invention are to provide a kind of intelligent auxiliary facility be applied on public TV machine, meet different crowd and listen to demand to sound of television.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows.
Public TV sound accompaniment and auto powering on/off apparatus, comprise the sound one kind broadcasts carriers with FM function of radio receiver and the power module, voice signal reader and the audio signal FM reflector that are arranged in housing, in sound one kind broadcasts carriers, be provided with acoustic reception and modular converter; The output of described voice signal reader connects the input of audio signal FM reflector, passes through wireless communication between audio signal FM reflector and sound one kind broadcasts carriers.
Above-mentioned public TV sound accompaniment and auto powering on/off apparatus, described audio signal FM reflector comprises acoustic impedance transducer, modulator, frequency generator, power amplifier, band pass filter and antenna, the input of described acoustic impedance transducer is connected with the output of voice signal reader, and the output of acoustic impedance transducer is connected with antenna through modulator, frequency generator, power amplifier, band pass filter successively.
Above-mentioned public TV sound accompaniment and auto powering on/off apparatus, described acoustic impedance transducer is provided with two altogether.
Above-mentioned public TV sound accompaniment and auto powering on/off apparatus, described acoustic reception and modular converter comprise the antenna, band pass filter, power amplifier, frequency generator, demodulator and a pair sound signal amplifier that connect successively.
Above-mentioned public TV sound accompaniment and auto powering on/off apparatus, be also provided with multichannel Bluetooth transmission device in described housing, the input of Bluetooth transmission device connects the band pass filter output of audio signal FM reflector; The bluetooth module receiving Bluetooth transmission device signal is provided with in described sound one kind broadcasts carriers.
Above-mentioned public TV sound accompaniment and auto powering on/off apparatus, infra-red detection controller is also provided with in described housing, infra-red detection controller comprises infrared ray photodiode, phase-locked loop single-tone detection circuit, signaling conversion circuit and switching circuit, the output of described photodiode connects the input of phase-locked loop single-tone detection circuit through signaling conversion circuit, the output connecting valve circuit of phase-locked loop single-tone detection circuit, switching circuit is serially connected on the power line of public TV.
Owing to have employed above technical scheme, the invention technological progress is as follows.
Under the present invention can meet public arena, different crowd is to the demand of media sound, can reach again function that is effectively energy-saving and cost-reducing, proterctive equipment; Be provided in outside existing public TV body, do not need body to reequip, have that volume is little, performance is comprehensive, practical, with low cost, the feature that is easy to Installation and Debugging, Social benefit and economic benefit is remarkable, in the face of the public TV colony be seen everywhere, there is huge market potential and application prospect.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present invention;
Fig. 2 is the structured flowchart of audio signal FM reflector of the present invention;
Fig. 3 is the structured flowchart of acoustic reception of the present invention and modular converter;
Fig. 4 is the structured flowchart of infrared acquisition recloser of the present invention;
Fig. 5 is external structure schematic diagram of the present invention.
Wherein: 1. housing, 2. antenna, 3. audio signal FM reflector, 4. Infrared Detectors.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further elaborated.
A kind of public TV sound accompaniment and auto powering on/off apparatus, its structure as shown in Figure 1, comprises transmitter and receiver, and transmitter is arranged in the power circuit of public TV, voice signal for receiving public TV is transmitted to receiver after conversion, and receiver is play the information received.
In the present invention, the structure of transmitter as shown in Figure 5, comprises housing 1, is provided with power module, voice signal reader, audio signal FM reflector 2 and multichannel Bluetooth transmission device in housing; Power module is connected with voice signal reader, audio signal FM reflector and multichannel Bluetooth transmission device respectively, is its power supply; The output of voice signal reader connects the input of audio signal FM reflector, passes through wireless communication between audio signal FM reflector and sound one kind broadcasts carriers.
The structure of audio signal FM reflector as shown in Figure 2, comprises acoustic impedance transducer, modulator, frequency generator, power amplifier, band pass filter and antenna 4; Acoustic impedance transducer is provided with a pair, the voice signal of the left and right sound channels of reading; The input of acoustic impedance transducer is connected with the output of voice signal reader, and the output of acoustic impedance transducer is connected with antenna through modulator, frequency generator, power amplifier, band pass filter successively.
The voice signal of reading is transformed into carrier signal by acoustic impedance transducer, modulator is by carrier signal modulation in addition, carrier signal after modulation is converted to a FM signal by frequency generator, this FM signal carries out power amplification by this power amplifier again, amplifying signal after band pass filter filtering noise information, then is exported by this antenna.
In the present embodiment, the operating voltage 2.4 ~ 3.3V of audio signal FM reflector, operating current 25mA ~ 40mA, transmit frequency range 67MHz ~ 128MHz, transmit frequency band interval 0.1MHz, can certainly revise step value; Tranmitting frequency covers whole FM frequency range, regulates by button.Audio signal FM reflector compact, adopt digital control method to carry out frequency cycle adjustment, launch frequency accurately stable, automatic channel search can catch, not by distance limit in use procedure, as far as tens meters, near to several centimetres, all can not produce howling because distance is near.
Receiver is the sound one kind broadcasts carriers with FM function of radio receiver, such as: simple and easy FM broadcast receiver, smart mobile phone or bluetooth earphone etc. can certainly be that other have the carrier of function of radio receiver.Be provided with acoustic reception and modular converter in sound one kind broadcasts carriers, the structure of acoustic reception and modular converter as shown in Figure 3, comprises the antenna, band pass filter, power amplifier, frequency generator, demodulator and a pair sound signal amplifier that connect successively.When antenna receives FM signal, this FM signal will sequentially via after band pass filter filtering noise information, power amplifier amplifying power, frequency generator produces the carrier signal of a correspondence again according to this FM signal, carrier signal is again through first, second local oscillator trend correction of demodulator, and produce a L channel voice signal and a right channel sound signal, the sound of this voice signal respectively after these sound signal amplifier amplifying powers, is played back by this sound one kind broadcasts carriers by this voice signal again.
When Bluetooth transmission device is set in transmitter, correspondingly in sound one kind broadcasts carriers, be provided with the bluetooth module receiving Bluetooth transmission device signal, to meet the sound one kind broadcasts carriers use that transmitter correspondence has Bluetooth function.The input of the Bluetooth transmission device in transmitter connects the band pass filter output of audio signal FM reflector.
The infra-red detection controller arranged in transmitter of the present invention, realizes unmanned automatic shutdown, messenger's automatic turn-on function by the inducing function of infrared ray to human body, both can save electric energy, can reduce equipment loss again.The structure of infra-red detection controller as shown in Figure 4, comprise infrared ray photodiode, phase-locked loop single-tone detection circuit, signaling conversion circuit and switching circuit, the output of photodiode connects the input of phase-locked loop single-tone detection circuit through signaling conversion circuit, the output connecting valve circuit of phase-locked loop single-tone detection circuit, switching circuit is serially connected on the power line of public TV.
Phase-locked loop single-tone detection circuit adopts LM567 to form spontaneous emission from the close-loop control mode received, the square wave signal of telecommunication produced by LM567 to be modulated on infrared signal and to launch, infrared ray photodiode receives this signal, and it is changed into the signal of telecommunication, after amplifying, detected by this LM567 self again.The frequency of oscillation of such LM567 self is forever identical with the signal frequency that will receive, even if make the frequency of oscillation of LM567 there occurs change for a certain reason, in certain frequency bandwidth, react because LM567 only produces with self-oscillation frequency signal closely, and other interference signal is not responded, there is reliability, strong interference immunity, the simple feature of Installation and Debugging.
Application of the present invention, can make that there is the crowd listening to wish and listen to public TV sound accompaniment by self-contained sound one kind broadcasts carriers, when sound one kind broadcasts carriers adopts smart mobile phone or FM broadcast receiver, can wearing headphones, allow the TV reception that people can be more absorbed, do not bother by the external world; Also other people can not be affected simultaneously.The present invention can install and use in public places such as high ferro, subway, subway track, coach, bus, dining room, train, aunt square dance, city commercial LED screen; without the need to eliminating or body repacking the extensive of existing public TV; with low cost; peace and quiet, civilization, harmonious PE can either be built for everybody, reach again the object of energy-conserving and environment-protective, proterctive equipment simultaneously.
Claims (6)
1. public TV sound accompaniment and auto powering on/off apparatus, it is characterized in that: comprise the sound one kind broadcasts carriers with FM function of radio receiver and the power module, voice signal reader and the audio signal FM reflector that are arranged in housing, in sound one kind broadcasts carriers, be provided with acoustic reception and modular converter; The output of described voice signal reader connects the input of audio signal FM reflector, passes through wireless communication between audio signal FM reflector and sound one kind broadcasts carriers.
2. public TV sound accompaniment according to claim 1 and auto powering on/off apparatus, it is characterized in that: described audio signal FM reflector comprises acoustic impedance transducer, modulator, frequency generator, power amplifier, band pass filter and antenna, the input of described acoustic impedance transducer is connected with the output of voice signal reader, and the output of acoustic impedance transducer is connected with antenna through modulator, frequency generator, power amplifier, band pass filter successively.
3. public TV sound accompaniment according to claim 2 and auto powering on/off apparatus, is characterized in that: described acoustic impedance transducer is provided with two altogether.
4. public TV sound accompaniment according to claim 3 and auto powering on/off apparatus, is characterized in that: described acoustic reception and modular converter comprise the antenna, band pass filter, power amplifier, frequency generator, demodulator and a pair sound signal amplifier that connect successively.
5. public TV sound accompaniment according to claim 2 and auto powering on/off apparatus, is characterized in that: be also provided with multichannel Bluetooth transmission device in described housing, and the input of Bluetooth transmission device connects the band pass filter output of audio signal FM reflector; The bluetooth module receiving Bluetooth transmission device signal is provided with in described sound one kind broadcasts carriers.
6. the public TV sound accompaniment according to any one of claim 1 to 5 and auto powering on/off apparatus, it is characterized in that: in described housing, be also provided with infra-red detection controller, infra-red detection controller comprises infrared ray photodiode, phase-locked loop single-tone detection circuit, signaling conversion circuit and switching circuit, the output of described photodiode connects the input of phase-locked loop single-tone detection circuit through signaling conversion circuit, the output connecting valve circuit of phase-locked loop single-tone detection circuit, switching circuit is serially connected on the power line of public TV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610090403.9A CN105554425A (en) | 2016-02-18 | 2016-02-18 | Public television sound accompanying and automatic power-on/off device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610090403.9A CN105554425A (en) | 2016-02-18 | 2016-02-18 | Public television sound accompanying and automatic power-on/off device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105554425A true CN105554425A (en) | 2016-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610090403.9A Pending CN105554425A (en) | 2016-02-18 | 2016-02-18 | Public television sound accompanying and automatic power-on/off device |
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| Country | Link |
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| CN (1) | CN105554425A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2583886Y (en) * | 2002-10-29 | 2003-10-29 | 海欧科技股份有限公司 | Wireless sound signal transmitter-receiver |
| KR20070076615A (en) * | 2006-01-19 | 2007-07-25 | 주식회사 팬택앤큐리텔 | A method for selecting a broadcasting channel |
| CN101420275A (en) * | 2008-11-28 | 2009-04-29 | 中兴通讯股份有限公司 | Audio wireless transmission method, public media audio transmitting device and mobile terminal |
| CN201499148U (en) * | 2009-09-08 | 2010-06-02 | 青岛海信电器股份有限公司 | Human body human induction switch circuit and television with same |
| CN205356537U (en) * | 2016-02-18 | 2016-06-29 | 汤征翰 | Public television audio and automatic switch machine |
-
2016
- 2016-02-18 CN CN201610090403.9A patent/CN105554425A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2583886Y (en) * | 2002-10-29 | 2003-10-29 | 海欧科技股份有限公司 | Wireless sound signal transmitter-receiver |
| KR20070076615A (en) * | 2006-01-19 | 2007-07-25 | 주식회사 팬택앤큐리텔 | A method for selecting a broadcasting channel |
| CN101420275A (en) * | 2008-11-28 | 2009-04-29 | 中兴通讯股份有限公司 | Audio wireless transmission method, public media audio transmitting device and mobile terminal |
| CN201499148U (en) * | 2009-09-08 | 2010-06-02 | 青岛海信电器股份有限公司 | Human body human induction switch circuit and television with same |
| CN205356537U (en) * | 2016-02-18 | 2016-06-29 | 汤征翰 | Public television audio and automatic switch machine |
Non-Patent Citations (1)
| Title |
|---|
| 严飞，姜源，杨碧石等: "《妙用电子模块222例》", 30 September 2006, 中国电力出版社 * |
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Application publication date: 20160504 |
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| RJ01 | Rejection of invention patent application after publication |