CN202998289U - Audio-video equipment - Google Patents
Audio-video equipment Download PDFInfo
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- CN202998289U CN202998289U CN 201220617947 CN201220617947U CN202998289U CN 202998289 U CN202998289 U CN 202998289U CN 201220617947 CN201220617947 CN 201220617947 CN 201220617947 U CN201220617947 U CN 201220617947U CN 202998289 U CN202998289 U CN 202998289U
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- message
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- video signal
- transmission cable
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Abstract
Audio-video equipment comprises an audio-video pick device, an audio-video play device, and a transmission cable module; wherein opposite two ends of the transmission cable module are respectively connected to the audio-video pick device and the audio-video play device; the transmission cable module has a video signal line group used for transmitting video signal data and an audio signal line group used for transmitting audio signal data and adapted to eliminate echo; wherein, the audio signal line group comprises a transmission line used for providing bit clock to the audio signal data, a transmission line used for providing clock to switching left/right sound channel audio signal data, a transmission line used for inputting serial audio signal data, and a transmission line used for outputting the serial audio signal data. Therefore, after the audio signal data picked by the audio-video pick device is transmitted to the audio-video play device through the transmission cable module, the effect of effectively eliminating the echo can be achieved.
Description
Technical field
The utility model relates to a kind of audio-visual devices, and particularly relates to a kind of in order to eliminate the audio-visual devices of echo.
Background technology
Along with the development of science and technology, no longer only as the use of one-way transmission information, TV now is gradually towards the trend development that is equiped with audio-visual pick device for TV.That is to say, be equiped with the function that the TV of audio-visual pick device has begun to have by network two-way communication.
Yet, to use during TV and audio-visual pick device carry out the process of two-way communication, the processing of echo becomes a large problem of wish solution now.In existing settling mode, as: Skype adopts Software for Design to reach the effect of eliminating echo.But this kind reaches the mode of eliminating echo, the transmitting software (as: QQ) that it not only need expend a large amount of R﹠D costs and be not suitable for being used in other by Software for Design.
So the improving of inventor's thoughts defects is that the spy concentrates on studies and coordinates the utilization of scientific principle, finally propose a kind of reasonable in design and effectively improve the utility model of defects.
The utility model content
It is a kind of in order to eliminating the audio-visual devices of echo that the purpose of the utility model embodiment is to provide, and it eliminates echo between audio-visual pick device and video-audio playing device by the structural design on hardware.
Another purpose of the utility model embodiment is to provide the transmission cable module of a kind of wall scroll formula transmission cable or double-bar type transmission cable.
The utility model embodiment provides a kind of audio-visual devices, comprise: an audio-visual pick device, have message pick-up, a signal processing module and the output port of video signal pick-up, in order to pick up the message data in order to pick up video signal data, this video signal pick-up and this message pick-up are electrically connected at this signal processing module, and this signal processing module is electrically connected at this output port; One video-audio playing device has an image display, an Audio Players, an and input port, and this image display and this Audio Players are respectively coupled to this input port; An and transmission cable module, the relative two ends of this transmission cable module are installed in respectively the output port of this audio-visual pick device and the input port of this video-audio playing device, and this transmission cable module have one in order to the video signal line group and of transmitting video signal data in order to transmit the message line group of message data; Wherein, this video signal line group has a transmission line in order to transferring electric power, a pair of transmission line in order to differential signal transmission, an and transmission line in order to ground connection, this message line group comprise use think the message data provide transmission line, that transmission line, a use of bit clock thinks that switching right and left sound channel message data provide clock in order to the transmission line of inputting serial message data, reach one in order to export the transmission line of serial message data.
Preferably, this signal processing module has a digital processing unit and an encoder of mutual electric connection, this digital processing unit is electrically connected at this video signal pick-up, and this encoder is electrically connected at this message pick-up, and this digital processing unit and this encoder are coupled to this output port.
Preferably, this output port has a video signal accessory power outlet and a message accessory power outlet, this input port has a video signal input socket and a message input socket, this transmission cable module has a video transmission cable and a message transmission cable, this video transmission line cable wrap contains this video signal line group, and the two ends of this video transmission cable are plugged in respectively this video signal accessory power outlet and this video signal input socket, this message transmission cable includes this message line group, and the two ends of this message transmission cable are plugged in respectively this message accessory power outlet and this message input socket.
Further, video signal accessory power outlet and message accessory power outlet all are electrically connected at digital processing unit.
Further, the video signal accessory power outlet is electrically connected at digital processing unit, and the message accessory power outlet is electrically connected at encoder.
Preferably, this output port has an integrated accessory power outlet, this input port has an integrated input socket, this transmission cable module has an integrated transmission cable, this integrated transmission cable includes this video signal line group and this message line group, and the two ends of this integrated transmission cable are plugged in respectively this integrated accessory power outlet and this integrated input socket.
further, integrated transmission cable has an insulating wrapped pipe and two plugs, two plugs are connected to the opposite end of insulating wrapped pipe, be provided with a first row terminal and a secondary series terminal in each plug in two plugs, video signal line group and message line group are placed in the insulating wrapped pipe, and the two ends of video signal line group are connected to the first row terminal of two each plugs in plug, and the two ends of message line group are connected to the secondary series terminal of two each plugs in plug, and two plugs are inserted in respectively integrated accessory power outlet and integrated input socket.
Further, integrated accessory power outlet is electrically connected at digital processing unit.
Further, integrated accessory power outlet is electrically connected at respectively digital processing unit and encoder.
Further, message line group further includes a transmission line in order to ground connection, and the quantity of the transmission line of message line group is greater than the quantity of the transmission line of video signal line group.
In sum, the utility model embodiment provide in order to eliminate the audio-visual devices of echo, its message line group by the transmission cable module with think the message data bit clock is provided, for switching right and left sound channel message data provide clock, input serial message data, and output serial message data, and then reach the effect of eliminating echo.
Moreover described transmission cable module can be designed to according to designer's demand video transmission cable and the message transmission cable of the integrated transmission cable of wall scroll or two formulas.
For further understanding feature of the present utility model and technology contents, see also following about detailed description of the present utility model and accompanying drawing, yet appended graphic reference and the explanation use of only providing not is that claim scope of the present utility model is done any restriction.
Description of drawings
Fig. 1 is the utility model in order to the function block schematic diagram of the audio-visual devices of eliminating echo.
Fig. 2 is the utility model in order to the schematic perspective view of audio-visual devices the first embodiment that eliminates echo.
Fig. 3 is the utility model in order to the sectional perspective schematic diagram of audio-visual devices the first embodiment that eliminates echo.
To be the utility model implement the schematic perspective view of aspect in order to another of audio-visual devices the first embodiment that eliminates echo to Fig. 4.
Fig. 5 is the utility model in order to the schematic perspective view of audio-visual devices the second embodiment that eliminates echo.
Fig. 6 is the utility model in order to the sectional perspective schematic diagram of audio-visual devices the second embodiment that eliminates echo.
To be the utility model implement the schematic perspective view of aspect in order to another of audio-visual devices the second embodiment that eliminates echo to Fig. 7.
[main element symbol description]
100 in order to eliminate the audio-visual devices of echo
1 audio-visual pick device
11 video signal pick-ups
12 message pick-ups
13 signal processing modules
131 digital processing units
132 encoders
14 output ports
141 integrated accessory power outlets
142 video signal accessory power outlets
143 message accessory power outlets
2 video-audio playing devices
21 image displays
22 Audio Players
23 input ports
231 integrated input sockets
232 video signal input sockets
233 message input sockets
3 transmission cable modules
31 integrated transmission cables
311 insulating wrapped pipes
312 plugs
3121 first row terminals
3122 secondary series terminals
313 video signal line groups
314 message line groups
32 video transmission cables
321 insulating wrapped pipes
322 plugs
323 video signal line groups
33 message transmission cables
331 insulating wrapped pipes
332 plugs
333 message line groups
Embodiment
See also Fig. 1, the utility model provides a kind of audio-visual devices 100 in order to eliminate echo, and it comprises an audio-visual pick device 1, a video-audio playing device 2, reaches the transmission cable module 3 of the above-mentioned audio-visual pick device 1 of a connection and video-audio playing device 2.
Wherein, described audio-visual pick device 1 can be in order to pick up video signal data and message data, and the video signal data that above-mentioned audio-visual pick device 1 picked up and message data after transferring to video-audio playing device 2, can reach the effect of effectively eliminating echo via transmission cable module 3.
Below illustrate the audio-visual devices 100 in order to eliminate echo that the utility model proposes, but the utility model is not as limit:
(the first embodiment)
See also Fig. 1 and consult simultaneously Fig. 2 and shown in Figure 3, it is the first embodiment of the present utility model, and wherein, Fig. 2 is the schematic perspective view of the present embodiment, and Fig. 3 is the sectional perspective schematic diagram of the present embodiment.
A kind of audio-visual devices 100 in order to eliminate echo of the present embodiment explanation comprises an audio-visual pick device 1, a video-audio playing device 2, reaches a transmission cable module 3.
Wherein, audio-visual pick device 1 in the present embodiment take camera head with function of radio receiver as example, and video-audio playing device 2 in the present embodiment take TV as example, but when practical application, be not subject to this.
Described audio-visual pick device 1 has a video signal pick-up 11, a message pick-up 12, a signal processing module 13, reaches an output port 14.Wherein, above-mentioned video signal pick-up 11 can be in order to picking up video signal data, and message pick-up 12 can be in order to pick up the message data.
Moreover described video signal pick-up 11 and message pick-up 12 are electrically connected at signal processing module 13, and above-mentioned signal processing module 13 is electrically connected at output port 14.
For instance, described video signal pick-up 11 can be a kind of CMOS (Complementary Metal Oxide Semiconductor) (Complementary Metal-Oxide-Semiconductor, CMOS), and message pick-up 12 can be a kind of microphone (Microphone).
Described signal processing module 13 has digital processing unit 131(DigitalSignal Processor, a DSP of mutual electric connection) and an encoder 132(Codec).Described digital processing unit 131 is electrically connected at above-mentioned video signal pick-up 11, and described encoder 132 is electrically connected at above-mentioned message pick-up 12, and described digital processing unit 131 is coupled to above-mentioned output port 14 with encoder 132.
Wherein, described output port 14 is an integrated accessory power outlet 141 in the present embodiment.Must be explanatorily that above-mentioned integrated accessory power outlet 141 is coupled to the mode of described digital processing unit 131 and encoder 132 and can be adjusted according to designer's demand.
For instance, described integrated accessory power outlet 141 can only be electrically connected at digital processing unit 131; Perhaps, described integrated accessory power outlet 141 can be electrically connected at respectively digital processing unit 131 and encoder 132.
Described video-audio playing device 2 has an image display 21, an Audio Players 22, reaches an input 23.Wherein, above-mentioned image display 21 is equivalent to the screen of TV, and Audio Players 22 is equivalent to the loudspeaker of TV, and above-mentioned image display 21 and Audio Players 22 are respectively coupled to input 23.Wherein, described input 23 is an integrated input socket 231 in the present embodiment.
The relative two ends of described transmission cable module 3 are installed in respectively the output port 14 of audio-visual pick device 1 and the input 23 of video-audio playing device 2, use the signal transmission of carrying out between transmitting audio-video pick device 1 and video-audio playing device 2.
Wherein, described transmission cable module 3 is an integrated transmission cable 31 in the present embodiment, and the two ends of integrated transmission cable 31 are plugged in respectively integrated accessory power outlet 141 and integrated input socket 231.
Furthermore, the integrated transmission cable 31 in the present embodiment has an insulating wrapped pipe 311, two plugs 312, a video signal line group 313, an and message line group 314.
The opposite end of described insulating wrapped pipe 311 is connected to described two plugs 312, and is provided with a first row terminal 3121 and a secondary series terminal 3122 in each plug 312.Also namely, the terminal in each plug 312 is roughly lined up two row, and the numbers of terminals of described secondary series terminal 3122 is greater than the numbers of terminals of described first row terminal 3121.
Described video signal line group 313 is placed in insulating wrapped pipe 311 with message line group 314, and the two ends of video signal line group 313 are connected to the first row terminal 3121 of described two plugs 312, and the two ends of message line group 314 are connected to the secondary series terminal 3122 of described two plugs 312.
In more detail, described video signal line group 313 can say further in order to transmit video signal data, and above-mentioned video signal line group 313 sequentially includes a transmission line in order to transferring electric power, a pair of transmission line in order to differential signal transmission, an and transmission line in order to ground connection.
Should be noted that, the transmission line of described video signal line group 313 puts in order better with above-mentioned arrangement mode, but when practical application, the transmission line of video signal line group 313 is arranged and is not limited to this.
Moreover, described message line group 314 can be in order to transmit the message data and to be suitable for eliminating echo, say further, above-mentioned message line group 314 includes in order a use and thinks that the message data provide transmission line, a use of bit clock to think that switching right and left sound channel message data provide the transmission line, a transmission line in order to ground connection, one of clock in order to the transmission line of inputting serial message data, and one in order to export the transmission line of serial message data.
Should be noted that, the transmission line of described message line group 314 puts in order better with above-mentioned arrangement mode, but when practical application, the transmission line of message line group 314 is arranged and is not limited to this.Moreover, the transmission line quantity of described message line group 314 in the present embodiment greater than the transmission line quantity of video signal line group 313, but not as limit.
Therefore, described integrated transmission cable 31 can be inserted in respectively integrated accessory power outlet 141 and integrated input socket 231 by two plugs 312, uses to connect audio-visual pick device 1 and video-audio playing device 2.
Sum total describedly will be transmitted two groups of data (as: left and right acoustic channels) in the mode that adopts sequence by the message line group 314 of above-mentioned integrated transmission cable 31 in order to the audio-visual devices 100 of eliminating echo.
Moreover, because the message line group 314 of integrated transmission cable 31 is separated transmission with data-signal and clock signal, through dividing crossfire, near-end message is separated with long-range message again, and then can additionally promote for each crossfire and (for example: remove long-range message from near-end message process action, remove with the echo that near-end message is provided), reach by this effect of eliminating echo.
For instance, if when having A user and B user all to talk with the audio-visual devices 100 in order to eliminate echo of the present embodiment, in A user one side, A user will hear the B user's sound that is sent by Audio Players 22.
When A user speaks, message pick-up 12 in A user one side will pick up A user's sound and B user's sound that tut player 22 sends, via message line group 314 with above-mentioned A user's sound and B user's sound separated transmission to video-audio playing device 2, after eliminating for B user's sound, transfer to again B user one side, and send by B user's Audio Players 22.
At this moment, B user will only can hear the sound that A user sends, and i.e., echo can be eliminated effectively.Vice versa, and A user also will only can hear the sound that is sent by B user.
In addition, above-mentioned enforcement aspect in order to the audio-visual devices 100 of eliminating echo is that two plugs 312 by described integrated transmission cable 31 are inserted in respectively the integrated accessory power outlet 141 of audio-visual pick device 1 and the integrated input socket 231 of video-audio playing device 2 is reached.
But when practical application, described integrated transmission cable 31 also can only be provided with a plug 312, as shown in Figure 4, one end of integrated transmission cable 31 directly is connected and fixed on audio-visual pick device 1(, integrated transmission cable 31 and audio-visual pick device 1 are as one-piece construction), and the other end of integrated transmission cable 31 is provided with plug 312, to be inserted in the integrated input socket 231 of video-audio playing device 2.
In like manner, described integrated transmission cable 31 also can be designed to following another enforcement aspect (figure slightly), one end of described integrated transmission cable 31 directly is connected and fixed on video-audio playing device 2(, integrated transmission cable 31 and video-audio playing device 2 are as one-piece construction), and the other end of integrated transmission cable 31 is provided with plug 312, to be inserted in the integrated accessory power outlet 141 of audio-visual pick device 1.
(the second embodiment)
See also Fig. 1 and while with reference to Fig. 5 and shown in Figure 6, it is the second embodiment of the present utility model, and wherein, Fig. 5 is the schematic perspective view of the present embodiment, and Fig. 6 is the sectional perspective schematic diagram of the present embodiment.
The present embodiment and the first embodiment are similar, exist together mutually no longer to repeat, and both differences mainly are: the output port 14 of audio-visual pick device 1, the input port 23 of video-audio playing device 2, and transmission cable module 3.
Particularly, audio-visual pick device 1 output port 14 of the present embodiment has a video signal accessory power outlet 142 and a message accessory power outlet 143, and video-audio playing device 2 input ports 23 have a video signal input socket 232 and a message input socket 233.
Wherein, above-mentioned video signal input socket 232 and message input socket 233 mode that is coupled to digital processing unit 131 and encoder 132 can be adjusted according to designer's demand.
For instance, video signal accessory power outlet 142 can all be electrically connected at digital processing unit 131 with message accessory power outlet 143; Perhaps, video signal accessory power outlet 142 is electrically connected at digital processing unit 131, and message accessory power outlet 143 is electrically connected at encoder 132.
Described transmission cable module 3 has a video transmission cable 32 and a message transmission cable 33.Wherein, the two ends of above-mentioned video transmission cable 32 are plugged in respectively video signal accessory power outlet 142 and video signal input socket 232, and the two ends of message transmission cable 33 are plugged in respectively message accessory power outlet 143 and message input socket 233.
Say further, described video transmission cable 32 includes an insulating wrapped pipe 321, two plugs 322, an and video signal line group 323.Wherein, the opposite end of described insulating wrapped pipe 321 is connected to above-mentioned two plugs 322, described video signal line group 323 is placed in above-mentioned insulating wrapped pipe 321, and the two ends of described video signal line group 323 are connected to each terminal in above-mentioned two plugs 322.
Should be noted that, the transmission line that the described video signal line of the present embodiment group 323 comprises is identical with the transmission line that video signal line group 313 in the first embodiment comprises, and is not given unnecessary details at this.
Moreover described message transmission cable 33 includes an insulating wrapped pipe 331, two plugs 332, an and message line group 333.Wherein, the opposite end of described insulating wrapped pipe 331 is connected to above-mentioned two plugs 332, and described message line group 333 is placed in above-mentioned insulating wrapped pipe 331, and the two ends of described message line group 333 are connected to the terminal in above-mentioned two plugs 332.
Should be noted that, the transmission line that the described message line of the present embodiment group 333 comprises is identical with the transmission line that message line group 314 in the first embodiment comprises, and is not given unnecessary details at this.Moreover, the transmission line quantity of described message line group 333 in the present embodiment greater than the transmission line quantity of video signal line group 323, but not as limit.
Therefore, described video transmission cable 32 can be plugged in respectively above-mentioned video signal accessory power outlet 142 and video signal input socket 232 by two plug 332, and message transmission cable 33 can be plugged in respectively above-mentioned message accessory power outlet 143 and message input socket 233 by two plug 332, uses to connect audio-visual pick device 1 and video-audio playing device 2.
Sum total describedly will be transmitted two groups of data (as: left and right acoustic channels) in the mode that adopts sequence by the message line group 314 of above-mentioned message transmission cable 33 in order to the audio-visual devices 100 of eliminating echo.
Moreover, because the message line group 314 of message transmission cable 33 is separated transmission with data-signal and frequency signal, through dividing crossfire, near-end message is separated with long-range message again, and then can additionally promote for each crossfire and (for example: remove long-range message from near-end message process action, remove with the echo that near-end message is provided), reach by this effect of eliminating echo.
In addition, except above-mentioned enforcement aspect in order to the audio-visual devices 100 of eliminating echo, when practical application, described video transmission cable 32 and message transmission cable 33 also can each only be provided with a plug 312.As shown in Figure 7, described video transmission cable 32 and message transmission cable 33 end separately directly is connected and fixed on audio-visual pick device 1(, video transmission cable 32, message transmission cable 33, and audio-visual pick device 1 three as one-piece construction), and described video transmission cable 32 and message transmission cable 33 other end separately are provided with plug 312, with video signal input socket 232 and the message input socket 233 that is inserted in respectively video-audio playing device 2.
In like manner, described video transmission cable 32 and message transmission cable 33 also can be designed to following another enforcement aspect (figure slightly), described video transmission cable 32 and message transmission cable 33 end separately directly is connected and fixed on video-audio playing device 2(and is also, video transmission cable 32, message transmission cable 33, and video-audio playing device 2 threes as one-piece construction), and video transmission cable 32 and message transmission cable 33 other end separately are provided with plug 312, to be inserted in the integrated accessory power outlet 141 of audio-visual pick device 1.
(possibility effect of the present utility model)
Comprehensive, the utility model embodiment provide in order to eliminate the audio-visual devices of echo, its message line group by the transmission cable module with think the message data bit clock is provided, for switching right and left sound channel message data provide clock, input serial message data, and output serial message data, and then reach the effect of eliminating echo.
That is to say, by above-mentioned message line group, data-signal and frequency signal are separately transmitted, then through dividing crossfire, near-end message is separated with long-range message, and then can remove long-range message from near-end message, remove with the echo that near-end message is provided.
Moreover described transmission cable module can be designed to the integrated transmission cable of wall scroll or two transmission lines cable (being the described video transmission cable of embodiment and message transmission cable) according to designer's demand.
Although embodiment of the present utility model discloses as above, so it is not to limit the utility model.Those of ordinary skill under the utility model in the field is not within breaking away from spirit and scope of the present utility model, when doing various changes and retouching.Therefore, protection range of the present utility model is as the criterion when looking accompanying the claim person of defining.
Claims (10)
1. an audio-visual devices, is characterized in that, described audio-visual devices comprises:
One audio-visual pick device, have message pick-up, a signal processing module and the output port of video signal pick-up, in order to pick up the message data in order to pick up video signal data, described video signal pick-up and described message pick-up are electrically connected at described signal processing module, and described signal processing module is electrically connected at described output port;
One video-audio playing device has an image display, an Audio Players and an input port, and described image display and described Audio Players are respectively coupled to described input port; And
One transmission cable module, the relative two ends of described transmission cable module are installed in respectively the described output port of described audio-visual pick device and the described input port of described video-audio playing device, and described transmission cable module have one in order to the video signal line group and of transmitting video signal data in order to transmit the message line group of message data;
Wherein, described video signal line group has a transmission line in order to transferring electric power, a pair of transmission line in order to differential signal transmission, an and transmission line in order to ground connection, described message line group comprise use think the message data provide transmission line, that transmission line, a use of bit clock thinks that switching right and left sound channel message data provide clock in order to the transmission line of inputting serial message data, reach one in order to export the transmission line of serial message data.
2. audio-visual devices according to claim 1, it is characterized in that, described signal processing module has a digital processing unit and an encoder of mutual electric connection, described digital processing unit is electrically connected at described video signal pick-up, described encoder is electrically connected at described message pick-up, and described digital processing unit and described encoder are coupled to described output port.
3. audio-visual devices according to claim 2, it is characterized in that, described output port has a video signal accessory power outlet and a message accessory power outlet, described input port has a video signal input socket and a message input socket, described transmission cable module has a video transmission cable and a message transmission cable, described video transmission line cable wrap contains described video signal line group, and the two ends of described video transmission cable are plugged in respectively described video signal accessory power outlet and described video signal input socket, described message transmission cable includes described message line group, and the two ends of described message transmission cable are plugged in respectively described message accessory power outlet and described message input socket.
4. audio-visual devices according to claim 3, is characterized in that, described video signal accessory power outlet and described message accessory power outlet all are electrically connected at described digital processing unit.
5. audio-visual devices according to claim 3, is characterized in that, described video signal accessory power outlet is electrically connected at described digital processing unit, and described message accessory power outlet is electrically connected at described encoder.
6. audio-visual devices according to claim 2, it is characterized in that, described output port has an integrated accessory power outlet, described input port has an integrated input socket, described transmission cable module has an integrated transmission cable, described integrated transmission cable includes described video signal line group and described message line group, and the two ends of described integrated transmission cable are plugged in respectively described integrated accessory power outlet and described integrated input socket.
7. audio-visual devices according to claim 6, it is characterized in that, described integrated transmission cable has an insulating wrapped pipe and two plugs, described two plugs are connected to the opposite end of described insulating wrapped pipe, be provided with a first row terminal and a secondary series terminal in each plug in described two plugs, described video signal line group and described message line group are placed in described insulating wrapped pipe, and the two ends of described video signal line group are connected to the first row terminal of each plug in described two plugs, and the two ends of described message line group are connected to the secondary series terminal of each plug in described two plugs, and described two plugs are inserted in respectively described integrated accessory power outlet and described integrated input socket.
8. audio-visual devices according to claim 6, is characterized in that, described integrated accessory power outlet is electrically connected at described digital processing unit.
9. audio-visual devices according to claim 6, is characterized in that, described integrated accessory power outlet is electrically connected at respectively described digital processing unit and described encoder.
10. the described audio-visual devices of any one according to claim 1-9, is characterized in that, described message line group further includes a transmission line in order to ground connection, and the quantity of the transmission line of described message line group is greater than the quantity of the transmission line of described video signal line group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220617947 CN202998289U (en) | 2012-11-20 | 2012-11-20 | Audio-video equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220617947 CN202998289U (en) | 2012-11-20 | 2012-11-20 | Audio-video equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202998289U true CN202998289U (en) | 2013-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220617947 Expired - Fee Related CN202998289U (en) | 2012-11-20 | 2012-11-20 | Audio-video equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202998289U (en) |
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2012
- 2012-11-20 CN CN 201220617947 patent/CN202998289U/en not_active Expired - Fee Related
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