CN203181127U - Wireless audio and video transmitter - Google Patents
Wireless audio and video transmitter Download PDFInfo
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- CN203181127U CN203181127U CN 201320068990 CN201320068990U CN203181127U CN 203181127 U CN203181127 U CN 203181127U CN 201320068990 CN201320068990 CN 201320068990 CN 201320068990 U CN201320068990 U CN 201320068990U CN 203181127 U CN203181127 U CN 203181127U
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Abstract
The utility model provides a wireless audio and video transmitter comprising an audio encoder used for carrying out compression encoding processing upon audio streams, a video encoder used for carrying out compression encoding treatment upon video streams, a multiplexer respectively connected with the audio encoder and the video encoder, a transmission processor connected with the multiplexer, and a transmission front end connected with the transmission processor. The video encoder comprises more than two delay modes, and delays allowed by the delay modes are different. The multiplexer is used for multiplexing audio code streams outputted by the audio encoder and video code streams outputted by the video encoder, such that single code stream is generated. The transmission processor is used for carrying out baseband signal transmission processing upon the single code stream. The transmission front end is used for converting the signals outputted by the transmission processor into radio frequency analog signals. The video encoder of the wireless audio and video transmitter is a multi-delay video encoder with which the delay modes can be selected. The wireless audio and video transmitter has wide application prospect.
Description
Technical field
The utility model relates to the communication technology, relates in particular to a kind of wireless audio and video transmitter.
Background technology
Along with the development of Digital Television, family wireless audio frequency and video transmission technology has also had very big progress.Traditional transmitting set often adopts discrete element to realize, and is seated on the high television tower, and transmitting power is generally kilowatt, and the cost that needs are higher is unfavorable for being applied in the average family.And, the user not only is confined to listen to/see audio/video in the Digital Television to the demand of Digital Television, sometimes also need other equipment, be sent on the digital television as the audio frequency and video in computer, game machine, DVD, blue light player, the OK a karaoke club ok system etc. and play.For example, by computer uploaded videos image to Digital Television; Perhaps the video image with the recreation on the game machine is uploaded to Digital Television, obtains the effect of better watching video image or playing by Digital Television.But the user is that different requirements is arranged to transmission of video images to the time delay on the Digital Television with the video image on the computer and recreation.For with the time delay of the transmission of video images on the computer to the Digital Television, can allow bigger time delay as: user; The user only allows less time delay for the transmission of video images on the game machine is relatively more responsive to the time delay of Digital Television, is no more than 20 milliseconds.Yet the video encoder of the transmitting set of available technology adopting only has single delay mode.
Therefore, having the video encoder in the transmitting set in the prior art is single delay mode encoder, and the user can't carry out delay mode and select, and makes it use the limited problem of scene.
The utility model content
The utility model provides a kind of wireless audio and video transmitter, can solve that the video encoder in the transmitting set is single delay mode encoder in the prior art, and the user can't carry out delay mode and select, and makes it use the limited problem of scene.
On the one hand, the utility model provides a kind of wireless audio and video transmitter, comprising:
Be used for audio stream is carried out the audio coder that compressed encoding is handled;
Be used for video flowing is carried out the video encoder that compressed encoding is handled, described video encoder comprises two or more delay modes, and the time-delay that each delay mode allows has nothing in common with each other;
Multiplexer is connected with described video encoder with described audio coder respectively, is used for video code flow to the audio code stream of described audio coder output, the output of described video encoder and carries out multiplexingly, generates single code stream;
For the transmission processor that described single code stream is carried out the baseband signal transmission process, described transmission processor is connected with described multiplexer;
Be used for the signal of described transmission processor output is converted to the front end of emission of radio frequency analog signal, described front end of emission is connected with described transmission processor.
Aforesaid wireless audio and video transmitter, wherein, described video encoder comprises that also time-delay is zero delay mode.
Aforesaid wireless audio and video transmitter also comprises, is used for described radio frequency analog signal is amplified the power amplifier of processing.
Aforesaid wireless audio and video transmitter, wherein, described audio coder, described video encoder, described multiplexer, described transmission processor and described front end of emission are integrated to be arranged in the chip.
Aforesaid wireless audio and video transmitter, wherein, the transmitting power of described wireless audio and video transmitter is no more than 10 watts.
Aforesaid wireless audio and video transmitter, wherein, described area of chip is not more than 100 square millimeters, and height is less than 5 millimeters.
As shown from the above technical solution, the utility model embodiment comprises two or more delay modes by the video encoder of wireless audio and video transmitter, and the time-delay that each delay mode allows has nothing in common with each other, and can realize that the user is to the selection of delay mode.Can solve that the video encoder in the transmitting set is single delay mode encoder in the prior art, the user can't carry out delay mode and select, and makes it use the limited problem of scene.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply, apparently, accompanying drawing in describing below is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The flow chart of wireless audio and video processing method one embodiment that Fig. 1 provides for the utility model embodiment;
The structural representation of wireless audio and video transmitter one embodiment that Fig. 2 provides for the utility model embodiment.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model embodiment clearer, below in conjunction with the accompanying drawing among the utility model embodiment, technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
The utility model has provided a kind of wireless audio and video transmitter, concrete, this wireless audio and video transmitter can be applied in the average family, and the video encoder of this wireless audio and video transmitter comprises two or more delay modes, and the time-delay that each delay mode allows has nothing in common with each other, particularly, the time-delay that each delay mode allows is difference fully, and is also can part identical.The user can select delay mode according to actual needs.Optionally, described wireless audio and video transmitter comprises first video encoding module and second video encoding module, corresponding first delay mode of described first time delay module, corresponding second delay mode of described second video encoding module, and the time-delay of the first delay mode permission is bigger than the time-delay that second delay mode allows, and also namely distinguishes corresponding high delay mode and low-delay mode.These the two kinds video encoding module with different delayed time pattern can be applied to time-delay is had the coding of the video flowing of different requirements.
Optionally, the first delay mode correspondence of first video encoding module be " film mode ", described " film mode " is insensitive to delaying time, and allows higher time-delay; The second delay mode correspondence of second video encoding module be " game mode ", described " game mode " is responsive to time-delay, only allows lower time-delay, is no more than 20 milliseconds.As: first video encoding module of the first delay mode correspondence namely can be applied to the coding of the video of computer transmission, behind the high time-delay coding of realization, sends to digital television, is carried out the broadcast of video by digital television; Second video encoding module of the second delay mode correspondence namely can be applied to the coding of the game video of game machine transmission, behind the realization low delay coding, sends to digital television, carries out the broadcast of game video.Can realize the selection of delay mode, can solve that the video encoder in the transmitting set is single delay mode encoder in the prior art, the user can't carry out delay mode and select, and makes it use the limited problem of scene.
The flow chart of wireless audio and video processing method one embodiment that Fig. 1 provides for the utility model embodiment.As shown in Figure 1, present embodiment comprises:
101: audio coder carries out compressed encoding to audio stream to be handled;
Wherein, described audio coder meets standard as AC-3, MPEG-2 AAC, MPEG-4 AAC, AVS etc., also can meet the combination of above-mentioned multiple standards, also can meet other new standards.
102: video encoder adopts a delay mode that video flowing is carried out compressed encoding and handles; Described video encoder comprises two or more delay modes, and the time-delay that each delay mode allows has nothing in common with each other;
Wherein, described video encoder meet standard as: MPEG-2 video, AVS video, H.264 wait standard, also can meet the combination of above-mentioned multiple standards, also can meet other new standards.
Optionally, described video encoder comprises: first delay mode and second delay mode;
Optionally, the time-delay that described first delay mode allows is bigger than the time-delay that described second delay mode allows, and then the described first delay mode correspondence is high delay mode, the described second delay mode correspondence be low-delay mode.
Optionally, the described first delay mode correspondence be " film mode ", described " film mode " is insensitive to delaying time, allow higher time-delay, when computer is transferred to described video encoder with video, select described first delay mode by described video encoder, realize the height time-delay coding to the video of computer transmission.
Optionally, the described second delay mode correspondence be " game mode ", described " game mode " is responsive to time-delay, only allow lower time-delay to be no more than 20 milliseconds, when game machine is transferred to described video encoder with game video, select described second delay mode by described video encoder, to realize the low delay coding to the game video of game machine transmission.
Wherein, describedly be no more than 20 milliseconds and comprised the described transmission processor of described wireless audio and video transmitter and the processing time of described front end of emission, and after digital television receives the game video that described wireless audio and video transmitter sends, game video is carried out the processing time of demodulation sign indicating number etc.
Optionally, described video encoder also comprises: a single-pole double-throw switch (SPDT).
Optionally, can give the requirement of the video of described video encoder to propagation delay time according to actual transmissions, select in described first delay mode and described second delay mode by described single-pole double-throw switch (SPDT).
Optionally, when the user will be transmitted game video on the game machine to described video encoder, because it is relatively stricter that the game video on the game machine requires propagation delay time, be no more than 20 milliseconds, then can be by to be selected described second delay mode by described single-pole double-throw switch (SPDT), the game video that described game machine is exported carries out the low delay coding.
Wherein, it will be appreciated by persons skilled in the art that the utility model embodiment is not limited to the above-mentioned method of described first delay mode and described second delay mode being selected by single-pole double-throw switch (SPDT).
Wherein, it will be appreciated by persons skilled in the art that the delay mode of video encoder described in the utility model embodiment, according to actual needs multiple delay mode can also be arranged, be not limited to the first above-mentioned delay mode and second delay mode.
103: the audio code stream after multiplexer is handled described compressed encoding and described compressed encoding processed video code stream carry out multiplexing, generate single code stream;
Optionally, described multiplexer can also be used for the video code flow to the audio code stream of described audio coder output, the output of described video encoder, and data and control signal carry out multiplexingly, generates single code stream;
Wherein, described data and control signal are the captions of described audio code stream and described video code flow correspondence etc.
Optionally, described multiplexer can be carried out the handling process that meets as the multiplexing standard of MPEG-2.
104: transmission processor carries out the baseband signal transmission process to described single code stream;
Wherein, described transmission processor is used for carrying out the baseband signal transmission process flow process that meets as standards such as ATSC, DVB-T, DTMB and ISDB-T, also can carry out the combination of above-mentioned multiple standards, also can carry out other new baseband signal transmission process standards.
105: the signal of front end of emission after with described baseband signal transmission process is converted to radio frequency analog signal.
Optionally, described front end of emission can also amplify processing to described radio frequency analog signal by low power amplifier.
Wherein, described power through the analog radio-frequency signal after the low power amplifier amplification processing is still fainter.
Optionally, the amplifying power dynamic adjustable of described low power amplifier.
Optionally, the amplifying power of described low power amplifier can be adjusted according to the transmitting range of wireless audio and video transmitter, as: when as described in the wireless audio and video transmitter to indoor digital television transmission of video, about 30 meters, the transmitting power that then needs is 5mW; When described wireless audio and video transmitter to outdoor digital television transmission of video, then distance increases, approximately the transmitting power that needs is 10mW, then can be by described low power amplifier is regulated, to satisfy the demand of different situations.
Wherein, the amplifying power dynamic adjustable of described low power amplifier makes the user can select the amplifying power of described low power amplifier according to different situations, thereby can reduce the power consumption of described wireless audio and video transmitter.
Wherein, in order to obtain more powerful radiofrequency signal, described method also comprises:
By power amplifier described radio frequency analog signal is amplified processing.
Optionally, described audio coder, described video encoder, described multiplexer, described transmission processor and described front end of emission are integrated to be arranged in the chip, and cost is low, reduces power consumption.
In addition, described video encoder employing time-delay is that zero delay mode carries out the compressed encoding processing to video flowing.
Optionally, described time-delay is that zero delay mode is " game mode ", be straight-through subpattern, when the video of input is the game video of game machine transmission, then described video encoder also can be selected this delay mode by described single-pole double-throw switch (SPDT), at this moment, described video encoder does not carry out the video compression coding processing to the game video of game machine transmission.
Being described time-delay when optionally, the time-delay of described second delay mode is zero is zero delay mode.
Present embodiment comprises that by the video encoder of wireless audio and video transmitter the time-delay that two or more delay modes and each delay mode allow has nothing in common with each other, and can realize that the user is to the selection of delay mode.Can solve that the video encoder in the transmitting set is single delay mode encoder in the prior art, the user can't carry out delay mode and select, and makes it use the limited problem of scene;
Further, the utility model embodiment is arranged in the chip by audio coder, video encoder, multiplexer, transmission processor and front end of emission are integrated, cost is low, reduce power consumption, and front end of emission is provided with power amplifier, the dynamic adjustment of amplifying power can be realized, also power consumption can be reduced.
The structural representation of wireless audio and video transmitter one embodiment that Fig. 2 provides for the utility model embodiment.As shown in Figure 2, the wireless audio and video transmitter of present embodiment comprises: audio coder 21, video encoder 22, multiplexer 23, transmission processor 24 and front end of emission 25;
Wherein, described audio coder is used for audio stream is carried out the compressed encoding processing;
Wherein, described audio coder meets standard as AC-3, MPEG-2 AAC, MPEG-4 AAC, AVS etc., also can meet the combination of above-mentioned multiple standards, also can meet other new standards.
Wherein, described video encoder is used for video flowing is carried out the compressed encoding processing; Described video encoder comprises two or more delay modes, and the time-delay that each delay mode allows has nothing in common with each other;
Optionally, described video encoder comprises:
First video encoding module and second video encoding module;
Described first video encoding module, corresponding first delay mode;
Described second video encoding module, corresponding second delay mode;
And the time-delay that described first delay mode allows is bigger than the time-delay that described second delay mode allows.
Wherein, described video encoder meet standard as: MPEG-2 video, AVS video, H.264 wait standard, also can meet the combination of above-mentioned multiple standards, also can meet other new standards.
Wherein, described video encoder can design according to the several modes of above-mentioned Standard Selection necessity in circuit, thereby can reduce the power consumption of wireless audio and video transmitter.
Optionally, corresponding first delay mode of described first video encoding module is high delay mode, and corresponding second delay mode of described second video encoding module is low-delay mode.
Optionally, corresponding first delay mode of described first video encoding module is high delay mode, can be applied to by computer video is transferred to described first video encoding module, realizes the height time-delay coding to the video of computer transmission.
Optionally, corresponding second delay mode of described second video encoding module is low-delay mode, can be applied to game machine game video is transferred to described second video encoding module, to realize the low delay coding to the game video of game machine transmission.
Optionally, described video encoder also comprises: a single-pole double-throw switch (SPDT); Described single-pole double-throw switch (SPDT) connects described first video encoding module and described second video encoding module.
Optionally, the user can give the requirement of the video of described video encoder to propagation delay time according to actual transmissions, selects in described first video encoding module and described second video encoding module by described single-pole double-throw switch (SPDT).
Optionally, when the user will be transmitted game video on the game machine to described video encoder, because it is relatively stricter that the game video on the game machine requires propagation delay time, be no more than 20 milliseconds, then the user can be by being connected to described single-pole double-throw switch (SPDT) described second video encoding module, and the game video of described game machine being exported by described second video encoding module carries out the low delay coding.
Wherein, describedly be no more than 20 milliseconds and comprised the described transmission processor of described wireless audio and video transmitter and the processing time of described front end of emission, and after digital television receives the game video that described wireless audio and video transmitter sends, game video is carried out the processing time of demodulation sign indicating number etc.
Wherein, it will be appreciated by persons skilled in the art that the utility model embodiment is not limited to the above-mentioned method of described first video encoding module and described second video encoding module being selected by single-pole double-throw switch (SPDT).
Wherein, it will be appreciated by persons skilled in the art that the delay mode of video encoder described in the utility model embodiment, according to actual needs multiple delay mode can also be arranged, be not limited to the first above-mentioned delay mode and second delay mode.
Wherein, described multiplexer is connected with described video encoder with described audio coder respectively, is used for video code flow to the audio code stream of described audio coder output, the output of described video encoder and carries out multiplexingly, generates single code stream.
Optionally, described multiplexer can also be used for the video code flow to the audio code stream of described audio coder output, the output of described video encoder, and data and control signal carry out multiplexingly, generates single code stream;
Wherein, described data and control signal are the captions of described audio code stream and described video code flow correspondence etc.
Optionally, described multiplexer can be carried out the handling process that meets as the multiplexing standard of MPEG-2.
Wherein, described transmission processor is connected with described multiplexer; Described transmission processor is used for described single code stream is carried out the baseband signal transmission process.
Wherein, described transmission processor is used for carrying out the baseband signal transmission process flow process that meets as standards such as ATSC, DVB-T, DTMB and ISDB-T, also can carry out the combination of above-mentioned multiple standards, also can carry out other new baseband signal transmission process standards.
Wherein, described front end of emission is connected with described transmission processor; Described front end of emission is used for the signal of described transmission processor output is converted to radio frequency analog signal.
Described front end of emission can comprise digital to analog converter and upconverter, can also comprise low power amplifier.Wherein, described digital to analog converter is used for the signal of described transmission processor output is converted to analog signal, and described upconverter is used for described analog signal is carried out frequency translation, obtains radio frequency analog signal; Described low power amplifier is used for amplifying processing through described radio frequency analog signal.
Wherein, described digital to analog converter is connected with described upconverter, and described upconverter is connected with described low power amplifier.
Wherein, described power through the analog radio-frequency signal after the low power amplifier amplification processing is still fainter.
Optionally, the amplifying power dynamic adjustable of described low power amplifier.
Optionally, the amplifying power of described low power amplifier can be adjusted according to the transmitting range of wireless audio and video transmitter, as: when as described in the wireless audio and video transmitter to indoor digital television transmission of video, about 30 meters, the transmitting power that then needs is 5mW; When described wireless audio and video transmitter to outdoor digital television transmission of video, then distance increases, approximately the transmitting power that needs is 10mW, then can be by described low power amplifier is regulated, to satisfy the demand of different situations.
Wherein, the amplifying power dynamic adjustable of described low power amplifier makes the user can select the amplifying power of described low power amplifier according to different situations, thereby can reduce the power consumption of described wireless audio and video transmitter.
Optionally, in order to obtain more powerful radiofrequency signal, described wireless audio and video transmitter can also comprise:
Be used for described radio frequency analog signal is amplified the power amplifier of processing;
Optionally, described power amplifier is connected with described front end of emission in described wireless audio and video transmitter.
Optionally, described audio coder, described video encoder, described multiplexer, described transmission processor and described front end of emission are integrated to be arranged in the chip, the pattern of this integrated circuit makes that the cost of described wireless audio and video transmitter is low, and can reduce the power consumption of described wireless audio and video transmitter.And the transmitting power of described wireless audio and video transmitter is no more than 10 watts, and described area of chip is not more than 100 square millimeters, and height is less than 5 millimeters.
In addition, described video encoder comprises that also time-delay is zero delay mode.
Optionally, described time-delay is zero corresponding the 3rd video encoding module of delay mode;
Optionally, the described time-delay of described the 3rd video encoding module correspondence is that zero delay mode is " game mode ", be straight-through subpattern, when the video of input was the game video of game machine transmission, then described video encoder also can select the game video that described the 3rd video encoding module is transmitted game machine not carry out the video compression coding processing by described single-pole double-throw switch (SPDT).
Wherein, when the time-delay of described second delay mode of the described second video encoding module correspondence was zero, described second video encoding module and described the 3rd video encoding module were same video encoding module.
Present embodiment comprises two or more delay modes by the video encoder of wireless audio and video transmitter, and the time-delay that each delay mode allows has nothing in common with each other, and can realize that the user is to the selection of delay mode.Can solve that the video encoder in the transmitting set is single delay mode encoder in the prior art, the user can't carry out delay mode and select, and makes it use the limited problem of scene;
Further, the utility model embodiment is arranged in the chip by audio coder, video encoder, multiplexer, transmission processor and front end of emission are integrated, cost is low, reduce power consumption, and front end of emission is provided with power amplifier, the dynamic adjustment of amplifying power can be realized, also power consumption can be reduced.
It should be noted that at last: above each embodiment is not intended to limit only in order to the technical solution of the utility model to be described; Although have been described in detail with reference to the utility model of aforementioned each embodiment, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps some or all of technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the scope of each embodiment technical scheme of the utility model.
Claims (6)
1. a wireless audio and video transmitter is characterized in that, comprising:
Be used for audio stream is carried out the audio coder that compressed encoding is handled;
Be used for video flowing is carried out the video encoder that compressed encoding is handled, described video encoder comprises two or more delay modes, and the time-delay that each delay mode allows has nothing in common with each other;
Multiplexer is connected with described video encoder with described audio coder respectively, is used for video code flow to the audio code stream of described audio coder output, the output of described video encoder and carries out multiplexingly, generates single code stream;
For the transmission processor that described single code stream is carried out the baseband signal transmission process, described transmission processor is connected with described multiplexer;
Be used for the signal of described transmission processor output is converted to the front end of emission of radio frequency analog signal, described front end of emission is connected with described transmission processor.
2. wireless audio and video transmitter according to claim 1 is characterized in that, described video encoder comprises that also time-delay is zero delay mode.
3. wireless audio and video transmitter according to claim 1 is characterized in that, also comprises:
Be used for described radio frequency analog signal is amplified the power amplifier of processing.
4. wireless audio and video transmitter according to claim 1 is characterized in that, described audio coder, described video encoder, described multiplexer, described transmission processor and described front end of emission are integrated to be arranged in the chip.
5. wireless audio and video transmitter according to claim 1 is characterized in that, the transmitting power of described wireless audio and video transmitter is no more than 10 watts.
6. wireless audio and video transmitter according to claim 4 is characterized in that, described area of chip is not more than 100 square millimeters, and height is less than 5 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320068990 CN203181127U (en) | 2013-02-06 | 2013-02-06 | Wireless audio and video transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320068990 CN203181127U (en) | 2013-02-06 | 2013-02-06 | Wireless audio and video transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203181127U true CN203181127U (en) | 2013-09-04 |
Family
ID=49077781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320068990 Expired - Lifetime CN203181127U (en) | 2013-02-06 | 2013-02-06 | Wireless audio and video transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203181127U (en) |
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2013
- 2013-02-06 CN CN 201320068990 patent/CN203181127U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: KUNTENG MICROELECTRONIC CO., LTD. Free format text: FORMER NAME: KT MICRO, INC. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 100195 Beijing, Yuquan, No. 23 Haidian District Road, building No. 4 Patentee after: KT MICRO, Inc. Address before: 100195 Beijing, Yuquan, No. 23 Haidian District Road, building No. 4 Patentee before: KT MICRO Inc. (BEIJING) |
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| CX01 | Expiry of patent term |
Granted publication date: 20130904 |
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| CX01 | Expiry of patent term |