CN202979214U - Sound box - Google Patents
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- CN202979214U CN202979214U CN 201220488505 CN201220488505U CN202979214U CN 202979214 U CN202979214 U CN 202979214U CN 201220488505 CN201220488505 CN 201220488505 CN 201220488505 U CN201220488505 U CN 201220488505U CN 202979214 U CN202979214 U CN 202979214U
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- 230000006870 function Effects 0.000 description 36
- 230000008859 change Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
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- 238000011160 research Methods 0.000 description 1
- 230000002463 transducing effect Effects 0.000 description 1
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Abstract
The utility model discloses a sound box, which comprises a sound box housing, an antenna, a digital television processing module, a power supply module and an audio processing module. The digital television processing module, the power supply module and the audio processing module are all located inside the sound box housing. The antenna extends from the sound box housing towards the outside. The antenna is used for receiving broadcast digital television signals. The digital television processing module is used for converting the broadcast digital television signals into audio and video multiplexing data and sending the audio and video multiplexing data to a digital television playing terminal through a data transmission interface. The audio processing module is used for receiving audio signals through an audio signal interface and converting the audio signals into sounds. The power supply module is used for supplying power to the digital television processing module and the audio processing module. The sound box which can achieve a loudspeaker function and also a broadcast digital television receiving function has a small volume and is convenient to carry.
Description
Technical field
The utility model execution mode relates to the input output device of computer technical field, more specifically, relates to a kind of audio amplifier.
Background technology
Audio amplifier is the terminal of whole sound system, and its effect is that the audio frequency electric energy is converted to corresponding acoustic energy, and it is radiated the space.Follow the development of science and technology, acoustic product gets over miniature portable, and mini audio amplifier arises at the historic moment, for various portable type electronic products provide loudspeaker, allow the user break away from the bothering and allow friend share together sound effect of earphone, and it can be plugged again earplug and is used as MP3 and uses.Along with the development of time, various mini audio amplifier forms more and more possess variation, the small and exquisite characteristics that become mini audio amplifier maximum attractive in appearance.But mini audio amplifier generally all plug-in card broadcast song outward, but also broadcast listening also has some other miscellaneous functions, for example illumination, exhale and help, hearing aid etc., this is a trend of mini function of loudspeaker box development in pluralism.
Mini audio amplifier of all kinds is arranged in the market, and this type of audio amplifier volume is little, low in energy consumption, is easy to carry, and can effectively improve volume and the tonequality of multimedia play terminal.Generally, the dimensions maximum be no more than football, minimum as size as egg.Mini audio amplifier integrates power amplifier, battery, twin loudspeaker, does not need long tone frequency channel wire, does not need external power supply.Mini audio amplifier can use USB1.1 or the power supply of 2.0 standard interfaces and audio frequency input, generally also possesses 3.5mm stereo audio input interface and can connect notebook, desktop PC, mobile phone, PSP, walkman, MD, Mp3, palmtop computer, PDA, Mp4, language repeater, iPod, mobile phone and miscellaneous equipment.
On the other hand, Mobile TV Technologies is current very popular medium technique, can be anywhere or anytime by mobile phone terminal, and even in the situation that high-speed mobile is watched TV programme.
At present, the implementation of mobile phone TV services mainly contains two kinds:
1) utilize cellular mobile network to realize:
Corresponding playout software is installed, a kind of mobile data services that realize by the mobile flow medium mode on the mobile phone terminal of supporting GPRS function or CDMA1X function.Its shortcoming is to be subjected to mobile network's limit bandwidth, and result of broadcast is poor, and somewhat expensive, and popularization degree is low.
2) utilizing broadcast mode to realize, is present main mobile TV implementation, comprises two kinds of satellite broadcasting and terrestrial broadcastings.
Numerous based on the hand-set digit television standard of broadcast mode in China, but at present the most popular be CMMB and DTMB.The most general present mobile TV implementation and the Digital Television processing module is installed in mobile phone.This mode need to be installed the broadcast digital television signals demodulation module on mobile phone terminal, can be not link by mobile communications network, directly obtain broadcast digital television signals, its result of broadcast is good, has truly realized the feasibility of watching TV programme of smoothness whenever and wherever possible.Yet, this mode, the user must just can watch TV with the mobile phone with mobile phone TV terminal function, and this class mobile phone price general charged is higher, and volume is larger.
In the prior art, comprise that the various audio amplifiers of mini audio amplifier can only be realized the function that sound is put outward, and it is higher to be built-in with the mobile phone price general charged of Digital Television processing module, volume is larger.
The utility model content
The utility model execution mode proposes a kind of audio amplifier, by the broadcast digital TV receiving function is built in audio amplifier, both can be used for realizing or promote the outer of multimedia play terminal sound putting, and can conveniently not have again the terminal of broadcast digital TV receiving function to watch Digital Television.
The concrete scheme of the utility model execution mode is as follows:
A kind of audio amplifier comprises voice box casing, antenna, Digital Television processing module, power module and audio processing modules; Digital Television processing module, power module and audio processing modules all are arranged in the inner space of described voice box casing, and described antenna stretches out from voice box casing; Wherein:
Antenna is used for receiving broadcast digital television signals;
The Digital Television processing module is used for described broadcast digital television signals is converted to the audio frequency and video multiplex data, and by data transmission interface, described audio frequency and video multiplex data is sent to Digital Television broadcast terminal;
Audio processing modules is used for by the audio signal interface received audio signal, and described audio signal is converted to sound;
Power module is used to the power supply of Digital Television processing module and audio processing modules.
Described Digital Television processing module is used for by USB (USB) interface, Wifi interface, blue tooth interface or infrared interface, described audio frequency and video multiplex data being sent to Digital Television and plays terminal.
It is cell phone, PDA(Personal Digital Assistant), panel computer, PC (PC), notebook computer or MP4 playback equipment that described Digital Television is play terminal.
Described Digital Television processing module comprises tuner, demodulator, memory and microcontroller;
Tuner, be used for to antenna reception to broadcast digital television signals carry out down-converted, obtain baseband signal;
Demodulator is used for described baseband signal is carried out channel demodulation and correction process, to obtain the audio frequency and video multiplex data;
Microcontroller is used for control described audio frequency and video multiplex data is cached to memory, and control sends to Digital Television broadcast terminal with the described audio frequency and video multiplex data in memory.
Described power module comprises battery and power management chip.
Described audio processing modules comprises audio frequency power amplifier module and loud speaker.
Described audio signal interface is 3.5mm audio interface, blue tooth interface, Wifi interface, USB (USB) interface or infrared interface.
Antenna is used for receiving China Mobile multimedia broadcasting (CMMB) TV signal, digital TV ground multimedia broadcasting (DTMB) TV signal or terrestrial wireless digital video broadcasting (DVB-T) signal.
Audio processing modules is used for that Digital Television is play terminal and is converted to sound by the audio signal that audio signal interface sends, and wherein this audio signal is that Digital Television broadcast terminal parses from described audio frequency and video multiplex data.
Described audio amplifier is mini audio amplifier.
Can find out from technique scheme, in the utility model execution mode, audio amplifier comprises voice box casing, antenna, Digital Television processing module, power module and audio processing modules; Digital Television processing module, power module and audio processing modules all are arranged in the inner space of described voice box casing, and described antenna stretches out from voice box casing; Wherein: antenna is used for receiving broadcast digital television signals; The Digital Television processing module is used for described broadcast digital television signals is converted to the audio frequency and video multiplex data, and by data transmission interface, described audio frequency and video multiplex data is sent to Digital Television broadcast terminal; Audio processing modules is used for by the audio signal interface received audio signal, and described audio signal is converted to sound; Power module is used to the power supply of Digital Television processing module and audio processing modules.
this shows, the utility model is integrated in audio amplifier inside with the broadcast digital TV receiving ability, both can realize or promote the outer of multimedia play terminal sound putting with audio amplifier of the present utility model, again can with audio amplifier of the present utility model with do not have mobile television function mobile terminal (such as, mobile phone, PDA, MP4, other has the electronic equipment of multi-media player function notebooks etc.) the connection mobile phone television viewing, the user can use simultaneously as required these two kinds of functions or only use wherein a kind of function, and the utility model volume is little, be easy to carry, allow the real realization of user need not change mobile terminal and just can listen the hope of putting the music on mobile phone television viewing whenever and wherever possible outward.
Description of drawings
Fig. 1 is the loudspeaker box structure figure according to the utility model execution mode;
Fig. 2 is the audio amplifier demonstrative structure schematic diagram according to embodiment of the present invention.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model is described in further detail.
The utility model execution mode proposes a kind of audio amplifier (preferably being embodied as the mini audio amplifier of small volume) with mobile TV receiving function for the mobile TV that utilizes broadcast mode to realize.By the Digital TV Receiving function being integrated in audio amplifier inside, make this audio amplifier both possess mobile phone (or PDA, MP4, other has the electronic equipment of multi-media player function notebooks etc.) sound puts the function of lifting outward, can serve as mobile telephone television receiver again, in the situation that need not change the terminal with mobile television function, utilize existing mobile phone (or PDA, MP4, other has the electronic equipment of multi-media player function notebook etc.) get final product mobile phone television viewing.
Fig. 1 is the loudspeaker box structure figure according to the utility model execution mode.
This audio amplifier comprises voice box casing (not illustrating in Fig. 1).It is mainly for the acoustic signals that prevents diaphragm of loudspeaker obverse and reverse directly forms the loop that there is the purpose of casing in audio amplifier, and causing only has the very little high intermediate frequency sound of wavelength to propagate out, and other voice signal is applied and has balanced out.In fact, the physical model of audio amplifier is to open a hole on an infinitely-great rigidity baffle, and loud speaker is installed, and so just can guarantee that the voice signal of loud speaker obverse and reverse can not form the loop, causes the sound wave loop.
As shown in Figure 1, this audio amplifier also comprises antenna, Digital Television processing module, power module and audio processing modules.
Digital Television processing module, power module and audio processing modules all are arranged in the inner space of described voice box casing, and described antenna stretches out from voice box casing; Wherein:
Antenna is used for receiving broadcast digital television signals;
The Digital Television processing module is used for described broadcast digital television signals is converted to the audio frequency and video multiplex data, and by data transmission interface, described audio frequency and video multiplex data is sent to Digital Television broadcast terminal;
Audio processing modules is used for by the audio signal interface received audio signal, and described audio signal is converted to sound;
Power module is used to the power supply of Digital Television processing module and audio processing modules.
In one embodiment, this antenna is preferably from the outward extending retractable aerial of voice box casing, thereby can save the space.In fact, the concrete form of implementation of antenna can be diversified, and the utility model execution mode is to this and indefinite, within all should being included in the protection range of the utility model execution mode.
Preferably, antenna can be used for receiving China Mobile multimedia broadcasting (CMMB) TV signal, digital TV ground multimedia broadcasting (DTMB) TV signal or terrestrial wireless digital video broadcasting (DVB-T) signal, etc.
CMMB be the first set of domestic independent research towards the system of the multiple mobile terminals such as mobile phone, notebook computer, utilize the S-band signal to realize that " world " one covers, whole nation roaming, support 25 cover TVs and 30 cover broadcast programs.
Digital TV ground multimedia broadcasting (DTMB) be China in formal ground digital television broadcast transmission standard of promulgating on August 18th, 2006, realized that fixedly the digital television signal of TV and public transport mobile TV transmits.The DTMB standard has been used time-domain synchronization OFDM and residual sideband multiplex technique simultaneously.
The terrestrial wireless digital video broadcasting is the Digital Television Open Standard by a series of international recognitions of DVB project maintenance.DVB system transmissions mode has following several: satellite (DVB-S and DVB-S2), wired (DVB-C)), terrestrial wireless (DVB-T) and hand-held terrestrial wireless (DVB-H).
Although above some specific standards and the form of having enumerated in detail broadcast digital television signals, those skilled in the art can recognize, the utility model execution mode is not limited to above-mentioned enumerating, but goes for broadcast digital television signals transmission standard arbitrarily.
In one embodiment, this audio amplifier is play terminal by data transmission interface to Digital Television and is sent the audio frequency and video multiplex data.Preferably, data transmission interface includes, but are not limited to: USB (USB) interface, Wifi interface, blue tooth interface or infrared interface etc.
Preferably, Digital Television is play terminal can be cell phone, PDA(Personal Digital Assistant), panel computer, PC (PC), notebook computer or MP4 playback equipment, etc.
Preferably, audio processing modules is used for that Digital Television is play terminal and is converted to sound by the audio signal that audio signal interface sends, and wherein this audio signal can be that Digital Television broadcast terminal parses from described audio frequency and video multiplex data.
In one embodiment, audio processing modules, be used for multimedia play terminal is converted to sound by the audio signal that audio signal interface sends, wherein this audio signal can be that Digital Television broadcast terminal parses from described audio frequency and video multiplex data, any voice signal that can be also Digital Television broadcast terminal or the output of other multimedia play terminal (comprises the bell sound, keypad tone, music, conversation, game sound etc.).
In a preferred implementation, embodiment of the present invention can be embodied as mini audio amplifier.
in the utility model execution mode, by the Digital Television processing module being integrated in audio amplifier inside, make the user just can obtain the function of two kinds of equipment when obtaining a kind of equipment, both can realize or promote the outer of multimedia play terminal sound putting with it, again can with it with there is no mobile phone (or the PDA of mobile television function, MP4, other has the electronic equipment of multi-media player function notebooks etc.) the connection mobile phone television viewing, the user can use simultaneously as required these two kinds of functions or only use wherein a kind of function, and volume is little, be easy to carry, allow the real realization of user need not buy new cell-phone (or PDA, MP4, other has the electronic equipment of multi-media player function notebooks etc.) just can listen outer putting the music on and the hope of mobile phone television viewing whenever and wherever possible.
Fig. 2 is the audio amplifier demonstrative structure schematic diagram according to embodiment of the present invention.
As shown in Figure 2, wherein tuner, demodulator, memory and microcontroller have consisted of the Digital Television processing module in Fig. 1.TV and power management chip have consisted of the power module in Fig. 1.Loud speaker and audio frequency power amplifier module have consisted of the audio processing modules in Fig. 1.Data transmission interface in Fig. 1 is embodied as USB interface in Fig. 2; Audio signal interface in Fig. 1 is embodied as the 3.5mm audio interface in Fig. 2.
Wherein, tuner, be used for to antenna reception to broadcast digital television signals carry out down-converted, obtain baseband signal;
Demodulator is used for described baseband signal is carried out channel demodulation and correction process, to obtain the audio frequency and video multiplex data;
Microcontroller is used for control described audio frequency and video multiplex data is cached to memory, and control sends to Digital Television broadcast terminal with the described audio frequency and video multiplex data in memory.
This audio amplifier comprises two large functions, is respectively the outer playing function of mobile TV receiving function and audio amplifier.
For the mobile TV receiving function:
particularly, broadcast digital television signals (comprise CMMB or DTMB or based on the digital television signal of other standard) is via antenna reception, the radiofrequency signal that receives is through the tuner down-conversion, after filtering, high-frequency carrier signal is removed, stay the baseband signal of specific bandwidth, this baseband signal realizes channel demodulation by demodulator, after the functions such as error correction, be output as the audio frequency and video multiplex data, this audio frequency and video multiplex data deposits memory buffer under the control of microcontroller, then microcontroller passes through USB interface (or bluetooth with the data in memory again, other data transmission interface such as WiFi) export to mobile phone (or PDA, MP4, other has the electronic equipment of multi-media player function notebooks etc.), mobile phone terminal is installed the corresponding video playout software, the data that receive are carried out audio/video decoding, the work such as broadcast, wherein audio signal can be play by the mobile phone loud speaker, also can play through the function of loudspeaker box that audio interface is exported to the utility model product.
For the outer playing function of audio amplifier:
Particularly, the audio signal process 3.5mm audio interface that mobile phone is play (or bluetooth, WiFi) export to audio frequency power amplifier, export to loud speaker after amplifying, loud speaker is realized perfect sound reproduction.Loud speaker is a device the weakest in stereo set, and for acoustics, it is again most important parts.
In the utility model execution mode, loud speaker may be embodied as multiple sort-type.Can be divided into electrodynamic type, electromagnetic type, piezoelectric type, digital etc. multiple by its transducing mode; Can be divided into single cone, compound cone, compound horn, coaxial etc. multiple by diaphragm structure; Can be divided into cone benzvalene form, ball top type, flat, belt etc. by vibrating diaphragm beginning multiple; Frequently can be divided into high frequency, intermediate frequency, low frequency, ultralow frequency and full range speaker by resetting; Can be divided into external magnetic type, internal magnetization, double magnetic circuit formula and protected type etc. by the magnetic circuit form multiple; Can be divided into ferrimagnet, neodymium boron magnet, alnico magnet loud speaker by magnetic circuit character; Can divide papery and non-cone loudspeaker etc. by diaphragm materials.
Battery of the present utility model (in the situation of conditions permit also the VBUS of available USB replace battery) is via giving respectively tuner, demodulator, microcontroller, audio frequency power amplifier module power supply after power management chip.
In sum, in the utility model execution mode, audio amplifier comprises voice box casing, antenna, Digital Television processing module, power module and audio processing modules; Digital Television processing module, power module and audio processing modules all are arranged in the inner space of described voice box casing, and described antenna stretches out from voice box casing; Wherein: antenna is used for receiving broadcast digital television signals; The Digital Television processing module is used for described broadcast digital television signals is converted to the audio frequency and video multiplex data, and by data transmission interface, described audio frequency and video multiplex data is sent to Digital Television broadcast terminal; Audio processing modules is used for by the audio signal interface received audio signal, and described audio signal is converted to sound; Power module is used to the power supply of Digital Television processing module and audio processing modules.
this shows, the utility model is integrated in audio amplifier inside with the Digital TV Receiving ability, both can realize or promote the outer of multimedia play terminal sound putting with audio amplifier of the present utility model, again can with audio amplifier of the present utility model with do not have mobile television function mobile terminal (such as, mobile phone, PDA, MP4, other has the electronic equipment of multi-media player function notebooks etc.) the connection mobile phone television viewing, the user can use simultaneously as required these two kinds of functions or only use wherein a kind of function, and the utility model volume is little, be easy to carry, allow the real realization of user need not change mobile terminal and just can listen the hope of putting the music on mobile phone television viewing whenever and wherever possible outward.
The above is only preferred embodiment of the present utility model, is not be used to limiting protection range of the present utility model.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (10)
1. an audio amplifier, is characterized in that, comprises voice box casing, antenna, Digital Television processing module, power module and audio processing modules; Digital Television processing module, power module and audio processing modules all are arranged in the inner space of described voice box casing, and described antenna stretches out from voice box casing; Wherein:
Antenna is used for receiving broadcast digital television signals;
The Digital Television processing module is used for described broadcast digital television signals is converted to the audio frequency and video multiplex data, and by data transmission interface, described audio frequency and video multiplex data is sent to Digital Television broadcast terminal;
Audio processing modules is used for by the audio signal interface received audio signal, and described audio signal is converted to sound;
Power module is used to the power supply of Digital Television processing module and audio processing modules.
2. audio amplifier according to claim 1, is characterized in that,
Described Digital Television processing module is used for by USB (universal serial bus), Wifi interface, blue tooth interface or infrared interface, described audio frequency and video multiplex data being sent to Digital Television and plays terminal.
3. audio amplifier according to claim 1 and 2, is characterized in that, it is cell phone, personal digital assistant, panel computer, PC, notebook computer or MP4 playback equipment that described Digital Television is play terminal.
4. audio amplifier according to claim 1 and 2, is characterized in that, described Digital Television processing module comprises tuner, demodulator, memory and microcontroller;
Tuner, be used for to antenna reception to broadcast digital television signals carry out down-converted, obtain baseband signal;
Demodulator is used for described baseband signal is carried out channel demodulation and correction process, to obtain the audio frequency and video multiplex data;
Microcontroller is used for control described audio frequency and video multiplex data is cached to memory, and control sends to Digital Television broadcast terminal with the described audio frequency and video multiplex data in memory.
5. audio amplifier according to claim 1 and 2, is characterized in that, described power module comprises battery and power management chip.
6. audio amplifier according to claim 1 and 2, is characterized in that, described audio processing modules comprises audio frequency power amplifier module and loud speaker.
7. audio amplifier according to claim 1 and 2, is characterized in that, described audio signal interface is 3.5mm audio interface, blue tooth interface, Wifi interface, USB (universal serial bus) or infrared interface.
8. audio amplifier according to claim 1 and 2, is characterized in that,
Antenna is used for receiving China Mobile multimedia broadcasting TV signal, digital TV ground multimedia broadcast television signal or terrestrial wireless digital video broadcast signal.
9. audio amplifier according to claim 1 and 2, is characterized in that,
Audio processing modules is used for that Digital Television is play terminal and is converted to sound by the audio signal that audio signal interface sends, and wherein this audio signal is that Digital Television broadcast terminal parses from described audio frequency and video multiplex data.
10. audio amplifier according to claim 1 and 2, is characterized in that, described audio amplifier is mini audio amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220488505 CN202979214U (en) | 2012-09-23 | 2012-09-23 | Sound box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220488505 CN202979214U (en) | 2012-09-23 | 2012-09-23 | Sound box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202979214U true CN202979214U (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220488505 Expired - Fee Related CN202979214U (en) | 2012-09-23 | 2012-09-23 | Sound box |
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| Country | Link |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103997302A (en) * | 2014-06-12 | 2014-08-20 | 天津大学 | Mobile terminal shell used for high fidelity music playing |
| CN107360489A (en) * | 2017-09-05 | 2017-11-17 | 陈银芳 | A kind of intelligent sound box that can see DTV |
| WO2019046994A1 (en) * | 2017-09-05 | 2019-03-14 | 陈银芳 | Intelligent amplifier having digital television function |
| CN111601126A (en) * | 2020-05-06 | 2020-08-28 | 深圳市同洲电子股份有限公司 | A digital TV descrambling system with charging function |
| CN111770481A (en) * | 2019-03-27 | 2020-10-13 | 峰范（北京）科技有限公司 | Sound playing device and connection method thereof |
-
2012
- 2012-09-23 CN CN 201220488505 patent/CN202979214U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103997302A (en) * | 2014-06-12 | 2014-08-20 | 天津大学 | Mobile terminal shell used for high fidelity music playing |
| CN107360489A (en) * | 2017-09-05 | 2017-11-17 | 陈银芳 | A kind of intelligent sound box that can see DTV |
| WO2019046994A1 (en) * | 2017-09-05 | 2019-03-14 | 陈银芳 | Intelligent amplifier having digital television function |
| CN111770481A (en) * | 2019-03-27 | 2020-10-13 | 峰范（北京）科技有限公司 | Sound playing device and connection method thereof |
| CN111601126A (en) * | 2020-05-06 | 2020-08-28 | 深圳市同洲电子股份有限公司 | A digital TV descrambling system with charging function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: LIU GUANGSONG Free format text: FORMER OWNER: U-TECH (BEIJING) TECHNOLOGY CO., LTD. Effective date: 20150121 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100085 HAIDIAN, BEIJING TO: 215021 SUZHOU, JIANGSU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150121 Address after: Four A0601 unit, 1355 international science and Technology Park, Jinji Lake Avenue, Suzhou Industrial Park, Suzhou, Jiangsu, 215021 Patentee after: Liu Guangsong Address before: 100085 B, block 11C, No. 28, information road, Beijing, Haidian District Patentee before: Youtaixunke (Beijing) Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20180923 |