CN101656854A - Wireless audio system of video device - Google Patents
Wireless audio system of video device Download PDFInfo
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- CN101656854A CN101656854A CN200910144913A CN200910144913A CN101656854A CN 101656854 A CN101656854 A CN 101656854A CN 200910144913 A CN200910144913 A CN 200910144913A CN 200910144913 A CN200910144913 A CN 200910144913A CN 101656854 A CN101656854 A CN 101656854A
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Abstract
The invention relates to a wireless audio system of a video device, which comprises the video device, a wireless transmission module matched with the video device, a sound box system and a wireless receiving module matched with the sound box system, wherein the wireless transmission module is arranged outside the video device and connected with an interface of the video device by a connecting device, and a 2.4G RF technology is adopted to carry out the wireless communication between the wireless transmission module and the wireless receiving module. In the invention, the known interface of thevideo device is utilized, the transmission module and the video device are mutually independent, the cost of the video device can not be increased, and the flexible allocation can be realized.
Description
Technical field
The present invention relates to a kind of video equipment wireless audio system, relate in particular to a kind of video equipment wireless audio system that can realize flexible configuration.
Background technology
Television set in the market has been tending towards the panel TV set of ultra-thinization, dull and stereotyped producer generally all pursue thin, light, high definition up and down foot the time, also obtained very big achievement, but aspect sound effect, but seldom worked hard, or inadvertently ignored to fall.The sound quality that ultra-thinization of panel TV causes TV worse and worse, especially the loss of bass part is more and more obvious.TV is an audio-visual devices, and vision and hearing enjoying are indispensable.Existing sound box system need be connected with television set by holding wire, and especially Hou Zhi Super Bass Loudspeaker Enclosure needs with a signal line across whole parlor.Wired connected mode causes very trouble of wiring, and is not only not attractive in appearance, and makes troubles to daily life.
Growing along with wireless technology, Radio Transmission Technology is used and is more and more accepted by all trades and professions.Wireless sound box system is in the market inherited radiating portion in the television set the inside as a module, so not only increased the cost of television set, and define the scope of application of wireless sound box, have only wireless transmitter module is arranged in the television set, the wireless sound box of just can arranging in pairs or groups uses, and the interface of TV and audio amplifier must be consistent.
Radio Transmission Technology in the market mainly contains several:
1ZigBee technology--cost is too high.
2 infrared transmission--the directivity, the transmission rate that are subject to its transmission are low, and easily disturbed.
The 3Bluetooth technology--difficulty and power consumption were relatively large synchronously between the restricted and sound of transmission speed was drawn.
Summary of the invention
Based on above-mentioned defective, the purpose of this invention is to provide a kind of voice optimization scheme of video equipment, when improving tonequality, solved the problem of 2.1 or 5.1 system wirings trouble.
Another object of the present invention provides a kind of video equipment wireless audio system, can be implemented in to carry out flexible configuration on the generic video equipment.
Technical scheme of the present invention is, 1, a kind of video equipment wireless audio system, comprise video equipment, the wireless transmitter module that matches with video equipment, sound box system and the wireless receiving module that matches with sound box system, described wireless transmitter module is placed on described video equipment, and links to each other with the interface of video equipment by jockey, adopts 2.4G RF technology to carry out radio communication between described wireless transmitter module and the described wireless receiving module.
As a preferred embodiment of the invention, described wireless transmitter module obtains power supply by jockey from the USB interface of video equipment, obtain audio signal from the voice output port of video equipment, thereby make wireless transmitter module can be common to any audio ﹠ video equipment of USB interface and sound output port.
As a preferred embodiment of the invention, be provided with digital signal processing unit in the described wireless transmitter module, to handle from the audio signal that video equipment obtains, form 5.1 channel stereo or 2.1 sound channels are exported, thereby realize the output of surround sound and common double sound channel audio.
As a preferred embodiment of the invention, wireless transmitter module is handled and is exported the audio signal of obtaining by the mode of strengthening bass, mitigation high pitch, thereby the audio signal of video equipment is handled, and has improved tonequality.
As a preferred embodiment of the invention, comprise the AD conversion unit, tuner and the 2.4G RF transmitter unit that the analog signal conversion of video equipment are become digital signal in the described wireless transmitter module, thus realize from video equipment carry out that audio frequency obtains, conversion and wireless quick transmission.
As a preferred embodiment of the invention, 2.4G RF receiving element, demodulator are set in the described wireless receiving module and digital signal are converted to the D/A conversion unit of analog signal, thereby, receive the audio frequency of wireless radio frequency modules fast with the wireless transmitter module cooperating.
As a preferred embodiment of the invention, each audio amplifier all is built-in with unlimited receiver module in the described sound box system, thereby wireless receiving module need not be set separately again.
As a preferred embodiment of the invention, when wireless audio system was worked, the loud speaker of video equipment was quiet, thereby prevented that two audio systems from working simultaneously and audio mixing and interference occur.
As a preferred embodiment of the invention, described video equipment is a television set.
As a preferred embodiment of the invention, also comprise the remote-control at audiofrequency device, be used to control wireless audio system, thereby easily carry out the adjusting of audio system.
The invention provides a kind of voice optimization scheme of ultra-thin panel TV, when improving tonequality, solved the problem of 2.1 or 5.1 channel sound system wirings trouble.The video equipment wireless audio system that the present invention discloses utilizes the existing interface of video equipment, and wireless transmitter module and video equipment are separate, can not increase the cost of video equipment, can realize disposing flexibly.For the video equipment of selling away, the tonequality of video equipment if the consumer wants to upgrade only needs to buy a wireless sound box system and gets final product.For new purchase video equipment, the consumer can be according to the needs apolegamy wireless sound box system of oneself.Whole wireless sound box system can be used as a general part, any type with voice output port of arranging in pairs or groups.
Description of drawings
Accompanying drawing 1 is the theory diagram of preferred embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present invention is described in detail, thereby protection scope of the present invention is made more explicit defining so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that.
The present invention can be used for television set, the multimedia display terminal network that also can be used for other video equipment system and have video device functions.In the embodiment of the invention, be that example schematically illustrates with the panel TV set, but the present invention is not limited to this.
As shown in Figure 1, be the principle schematic in the embodiment of the invention, among the figure with television set TV as video equipment, on TV, all be provided with at least one USB interface at present, simultaneously TV is provided with HDMI, earphone interface and conventional acoustic output interface.
An input of wireless transmitter module links to each other with the USB interface of television set, to obtain power supply, certainly wireless transmitter module also can utilize dry cell or lithium battery as application of power, another input of wireless transmitter module links to each other with the earphone interface of television set, thereby obtains the output signal of television sound.
In wireless transmitter module, be provided with 2.4G RF transmitter unit, adopt the 2.4G radio network technique that is commonly called as at present.2.4G why wireless technology is that " 2.4G " rather than " 2.5G " are because the frequency that this technology is used is a 2.4-2.485GHz ISM radio band, this frequency range all belongs in global most countries exempts to authorize free use, and this is the universal biggest obstacle of having cleared away of product.
2.4G efficiency of transmission has reached 4Mbps, does not need continuity work between receiving terminal and the transmitting terminal, thereby the power consumption of greatly reducing, prolongs battery life.Simultaneously occur the phenomenon that interferes with each other easily for fear of the 27Mhz radio band, 2.4G has also adopted the automatic frequency adjustment technology, and receiving terminal and transmission ends can find available frequency band.In addition, the more important thing is that 2.4G RF wireless technology is the transmitted in both directions pattern, avoid the 27Mhz one-way transmission to occur the interrupted situation of signal easily.Wireless transmitter module adopts the 2.4G radio-frequency technique, and transmission range can reach 10 meters under the situation that has barrier to block, can satisfy domestic. applications fully.Transmission rate is 4Mbps, can satisfy the requirement of audio transmission fully.
2.4Ghz non-networking solution is not because need to pay to any organization or individual reason such as patent fee, its cost other radio network techniques (as: WiFi/ bluetooth etc.) relatively wants cheap many.
In wireless transmitter module, be provided with AD conversion unit, AD conversion unit will be converted to digital signal from the voice signal that television set obtains, and, the digital signal after the conversion is carried out wireless transmission through 2.4G RF transmitter unit through the tuner in the wireless transmitter module.
In wireless receiving module, be provided with demodulator, behind the digital demodulation signal that will receive, by being arranged on D/A conversion unit in the wireless receiving module, the ANTENN AUDIO digital signal that receives is converted to analog signal, thereby analog signal transmission to the audio amplifier that is connected with wireless receiving module, is carried out the broadcast of audio frequency.
In embodiments of the present invention, because general TV programme and television set all is dual track at present, in order to realize improving tonequality by wireless audio system, realize the broadcast of 5.1 channel stereo, in wireless transmitter module, be provided with digital signal processing unit DSP (digital signal processor), DSP is a kind of microprocessor of uniqueness, is the device of handling bulk information with digital signal.Its operation principle is to receive analog signal, is converted to 0 or 1 digital signal, again digital signal is made amendment, deletes, is strengthened, and in the other system chip analogue data or actual environment form are returned in the numerical data decipher.It is not only programmable, and the speed of service can reach the per second number with ten million bar complicated order program in fact the time, considerably beyond general purpose microprocessor, is the computer chip that becomes more and more important in the digitalized electron world.Its powerful data-handling capacity and the high speed of service are two the most commendable big characteristics.
Dsp chip also claims digital signal processor, is a kind of microprocessor device that is particularly suitable for carrying out the Digital Signal Processing computing, and it is mainly used is to realize various digital signal processing algorithms real-time.According to the requirement of Digital Signal Processing, dsp chip generally has following main feature:
(1) in an instruction cycle, can finish a multiplication and a sub-addition;
(2) program and data space separate, simultaneously access instruction and data;
(3) have quick RAM in the sheet, usually can be by independently data/address bus visit simultaneously in two;
(4) has low expense or do not have expense circulation and the hardware supports of redirect;
(5) Interrupt Process and Hardware I/O supports fast;
(6) have a plurality of hardware address generators of in the monocycle, operating;
(7) can a plurality of operations of executed in parallel;
(8) support pile line operation, operations such as getting finger, decoding and execution can overlappingly be carried out.
Certainly, compare with general purpose microprocessor, other general utility functionss of dsp chip are more weak relatively.
At wireless transmitter module, by digital signal processing unit, the bass of television set output to be strengthened handling, the high pitch that television set is exported relaxes processing, and through the polishing and the adjusting of tone color and tonequality, realization is improved the television set output sound and is improved.
In addition, the wireless receiving module part, by connecting the bar shaped audio amplifier, integrate the bar shaped audio amplifier of L channel, R channel and center channels and a left side around, right around and Super Bass Loudspeaker Enclosure, form 5.1 complete sound channel systems.After wireless receiving module receives the voice signal that wireless transmitter module sends, through separating the mediation digital-to-analogue conversion, left and right acoustic channels and center channels are transmitted to the bar shaped audio amplifier, a left side is around being transmitted to left surround speaker, right around being transmitted to right surround speaker, supper bass is transmitted to active Super Bass Loudspeaker Enclosure, thereby realizes the broadcast of 5.1 sound channel systems in audio system.
Owing to there is not the restriction of connecting line, the putting position of audio amplifier is free more, can put audio amplifier according to actual environment and sound field designing requirement, realizes better stereophonic effect, satisfies higher tonequality demand.
This wireless audio system can also be realized simple 2.1 systems by the software adjustment, removes center channels in the practical operation and left and right sides surround speaker gets final product, and satisfies the demand of ordinary consumer with high performance-price ratio.
In addition, the L channel in the bar shaped audio amplifier, center channels and R channel can be set to 3 demountable little audio amplifiers, built-in wireless receiving module.Start working when little audio amplifier built-in receiver module when the bar shaped audio amplifier is pulled down, guarantee the continuity of sound.Like this, when watching TV night, 3 little audio amplifiers can be pulled down, be placed on the beholder at one's side, both can enjoy sound effect preferably, exempt the sense of discomfort of pendant base of a fruit earphone, leave other kinsfolks' rest again alone.
The present invention adopts 2.4G RF technology, compares with Bluetooth technology, and the transmission ANTENN AUDIO is with the obvious advantage, mainly shows:
A) data transmission bauds height can guarantee high-quality tonequality, reduces transmission distortion;
B) simple and convenient user operation, key pairing, the user need not operation in the future; Can avoid complicated user's operations such as bluetooth;
C) transmission delay is little, can realize that video tone is synchronous; Bluetooth can't realize that video tone is synchronous;
D) can realize 1: 1 and 1: N transmits; Bluetooth can't realize;
E) long transmission distance, transmission directivity useless is not influenced by barrier, can accessible within the family use;
F) Chuan Shu signal to noise ratio height can guarantee that high-quality tonequality transmits.
The embodiment of the invention is obtained audio signal from the earphone terminal of television set, and when whole system was worked, the loud speaker of television set was quiet, the interference when having avoided two audio systems to work simultaneously.And USB terminal and earphone terminal are the standard configuration of present most of panel TV, have increased the versatility of native system.Therefore, the present invention can be applied in the video equipment and multimedia terminal equipment that possesses earphone output, HDMI output or conventional acoustic output port, realizes the wireless transmission of sound and improves the sound audio, thereby more meet consumer demand.
A kind of wireless audio system that the present invention discloses can improve the voice optimization scheme of video equipment such as ultra-thin panel TV, when improving tonequality, has solved the problem of 2.1 or 5.1 channel sound system wirings trouble.
The video equipment wireless audio system that the present invention discloses utilizes the existing interface of video equipment, and wireless transmitter module and video equipment are separate, can not increase the cost of video equipment, can realize disposing flexibly.For the video equipment of selling away, the tonequality of video equipment if the consumer wants to upgrade only needs to buy a wireless sound box system and gets final product.For new purchase video equipment, the consumer can be according to the needs apolegamy wireless sound box system of oneself.Whole wireless audio system can be used as a general part, any type with voice output port of arranging in pairs or groups.
The above; it only is the specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; any those of ordinary skill in the art are in the disclosed technical scope of the present invention; variation or the replacement that can expect without creative work all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range that claims were limited.
Claims (10)
1, a kind of video equipment wireless audio system, comprise video equipment, the wireless transmitter module that matches with video equipment, sound box system and the wireless receiving module that matches with sound box system, it is characterized in that, described wireless transmitter module is placed on described video equipment, and links to each other with the interface of video equipment by jockey, adopts 2.4G RF technology to carry out radio communication between described wireless transmitter module and the described wireless receiving module.
2, video equipment wireless audio system according to claim 1 is characterized in that, described wireless transmitter module obtains power supply by jockey from the USB interface of video equipment, obtains audio signal from the voice output port of video equipment.
3, video equipment wireless audio system according to claim 1, it is characterized in that, be provided with digital signal processing unit in the described wireless transmitter module, will handle, form 5.1 channel stereo or 2.1 sound channels are exported from the audio signal that video equipment obtains.
4, video equipment wireless audio system according to claim 3 is characterized in that, wireless transmitter module is handled and exported the audio signal of obtaining by the mode of strengthening bass, mitigation high pitch.
5, according to the described video equipment wireless audio system of one of claim 1～4, it is characterized in that, comprise the AD conversion unit, tuner and the 2.4G RF transmitter unit that the analog signal conversion of video equipment are become digital signal in the described wireless transmitter module.
6, video equipment wireless audio system according to claim 5 is characterized in that, 2.4G RF receiving element, demodulator is set in the described wireless receiving module and digital signal is converted to the D/A conversion unit of analog signal.
7, video equipment wireless audio system according to claim 6 is characterized in that, each audio amplifier all is built-in with unlimited receiver module in the described sound box system.
8, video equipment wireless audio system according to claim 5 is characterized in that, when wireless audio system was worked, the loud speaker of video equipment was quiet.
9, video equipment wireless audio system according to claim 5 is characterized in that, described video equipment is a television set.
10, video equipment wireless audio system according to claim 5 is characterized in that, also comprises the remote-control at audiofrequency device, is used to control wireless audio system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910144913A CN101656854A (en) | 2009-09-11 | 2009-09-11 | Wireless audio system of video device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910144913A CN101656854A (en) | 2009-09-11 | 2009-09-11 | Wireless audio system of video device |
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| CN101656854A true CN101656854A (en) | 2010-02-24 |
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| CN200910144913A Pending CN101656854A (en) | 2009-09-11 | 2009-09-11 | Wireless audio system of video device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102711001A (en) * | 2011-03-28 | 2012-10-03 | 淇誉电子科技股份有限公司 | Sound box base device for display |
| CN102905096A (en) * | 2012-09-07 | 2013-01-30 | 深圳创维－Rgb电子有限公司 | Panel television and turn-on exhibiting method thereof |
| CN103079142A (en) * | 2012-12-21 | 2013-05-01 | 国光电器股份有限公司 | Bass time delay adjusting system and bass time delay adjusting method for wireless subwoofer |
| CN103269469A (en) * | 2013-05-27 | 2013-08-28 | 沈阳工业大学 | High fidelity 5.1 sound track wireless sound system |
| CN105451127A (en) * | 2014-08-08 | 2016-03-30 | 深圳市云动创想科技有限公司 | Audio sharing method and audio sharing system |
| CN108289267A (en) * | 2018-04-14 | 2018-07-17 | 北京智网时代科技有限公司 | Eliminate echo cancelling device, method, speaker, the voice frequency sender of TV interference |
-
2009
- 2009-09-11 CN CN200910144913A patent/CN101656854A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102711001A (en) * | 2011-03-28 | 2012-10-03 | 淇誉电子科技股份有限公司 | Sound box base device for display |
| CN102905096A (en) * | 2012-09-07 | 2013-01-30 | 深圳创维－Rgb电子有限公司 | Panel television and turn-on exhibiting method thereof |
| CN103079142A (en) * | 2012-12-21 | 2013-05-01 | 国光电器股份有限公司 | Bass time delay adjusting system and bass time delay adjusting method for wireless subwoofer |
| CN103079142B (en) * | 2012-12-21 | 2016-05-11 | 国光电器股份有限公司 | A kind of wireless bass big gun bass time delay adjustable system and method |
| CN103269469A (en) * | 2013-05-27 | 2013-08-28 | 沈阳工业大学 | High fidelity 5.1 sound track wireless sound system |
| CN105451127A (en) * | 2014-08-08 | 2016-03-30 | 深圳市云动创想科技有限公司 | Audio sharing method and audio sharing system |
| CN108289267A (en) * | 2018-04-14 | 2018-07-17 | 北京智网时代科技有限公司 | Eliminate echo cancelling device, method, speaker, the voice frequency sender of TV interference |
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Application publication date: 20100224 |