CN201114507Y - A wireless digital high-definition interface device without compression - Google Patents
A wireless digital high-definition interface device without compression Download PDFInfo
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Abstract
The utility model discloses an uncompressed wireless digital high-definition interface device which comprises a wireless high-definition transmitting module and a wireless high-definition receiving module which are separated, wherein, the wireless high-definition transmitting module comprises a baseband audio and video code modulation unit, a radio frequency transceiving unit, a radio frequency magnifying unit, a radio frequency antenna element, a wireless communication control unit and a wireless high-definition interface which is used for realizing the wired link with the external part; the wireless high-definition receiving module comprises a radio frequency antenna element, a radio frequency transceiving unit, a baseband audio and video decode unit, a wireless communication control unit and a wireless high-definition interface which is used for realizing the wire link with the external part; by adopting joint source-channel coding technology and video modulation technology between the wireless high-definition transmitting module and the wireless high-definition receiving module, high-definition program signals can be transmitted in an uncompressed way with ultra-low-delay; the uncompressed wireless digital high-definition interface device is characterized by high coverage area, high wall feed-through and anti-jamming capability, simple system structure and a system with relatively low cost, and can fully meet the application requirement for family digital wireless multimedia.
Description
Technical field
The utility model relates to the interface arrangement that connects display device, particularly relates to a kind of wireless digital high resolution interface arrangement that does not have compression.
Background technology
Fast development along with the digital high resolution audio and video technology, existing increasing display terminal has possessed the function that can receive and show digital high resolution audio and video signal, in existing these digital high resolution audio and video display terminals, normally in wired mode high resolution audio and video signal is inserted by the high resolution audio and video interface.Yet, now in the digital high resolution audio and video transmission system, exist HDMI, DVI, VGA, wired HD video transmission means that YPbPr or the like is different is because poor compatibility each other between these transmission meanss, just make and possess reception and show that the display terminal of digital high resolution audio and video signal need be provided with multiple interfaces, just can be adapted to the use of various different transmission meanss.But, after interface increases, brought certain degree of difficulty can on the one hand the layout designs of display terminal; The wiring of numerous and complicated has also caused inconvenience in many uses to the user on the other hand, also can cause the waste of wire rod and the raising of consumer cost simultaneously.Therefore, a kind of wireless digital high resolution interface arrangement that replaces present wire transmission mode with the WirelessHD transmission means just arises at the historic moment, existing this interface arrangement generally includes radiating portion and the receiving unit that is separated, radiating portion is provided with various interface usually and comes from various different transmission means high resolution audio and video signals to be adapted to insert, receiving unit is provided with the interface that can be complementary with corresponding display terminal so that the signal that receives is defeated by display terminal, between radiating portion and receiving unit, then adopt wireless mode to carry out the signal transmission, and utilized compress technique to carry out the signal transmission, because this device is to adopt compress mode to transmit in the wireless transmission process, thereby some drawbacks have been brought, the compression and the decompress(ion) itself of well-known video will bring decrease in image quality, and compress technique can be brought the raising of technical costs, moreover, video compression also can be subjected to certain limitation (as being that the high definition program that does not allow to compress is exported in U.S. Hollywood) when application-oriented, also have, because the process of compression and decompress(ion) will produce time-delay, the video of some video source output is incoercible (as game machine, PC), in addition, many wireless technology ubiquity coverages, transmission bandwidth, exist and postpone, the image threshold effect, problems such as antijamming capability deficiency, be up to 54M as 802.11a/b/g bandwidth in the IEEE802.11x series and can't transmit the high definition data, new 802.11n also can only transmit the high definition data after overcompression, and exists than long delay; Again such as UWB (ultra broadband) technology, though can transmitting the high definition program, it needs through encoding and decoding compression and decompress(ion), produce picture delay thus, more crucial is, and its transmission range is all very poor 10 meters left and right sides abilities anti-interference and through walls, can not satisfy the application of Modern Family fully; In addition, also there is the short drawback of transmission range in the wirelessHD technology.
The utility model content
The purpose of this utility model is to overcome the deficiency of prior art, a kind of wireless digital high resolution interface arrangement that does not have compression is provided, can there be compression and the ultralow high definition programme signal of lingeringly transmitting, have the advantages that high coverage, high antijamming capability through walls and system architecture are simple, system cost is lower, can fully satisfy the family digital radio multimedium and use.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of wireless digital high resolution interface arrangement that does not have compression comprises:
One WirelessHD transmitter module comprises base band audio/video coding modulating unit, Transmit Receive Unit, radio frequency amplifying unit, radio-frequency antenna unit, wireless communication control unit and is used to realize WirelessHD interface with outside wired connection; The input of base band audio/video coding modulating unit is connected with the WirelessHD interface, reception comes from the high resolution audio and video signal of interface front end input, through behind the joint source-channel coding of its baseband coding subelement, export baseband rf signal through after the inner digital-to-analogue conversion again; The output of base band audio/video coding modulating unit is connected to the input of Transmit Receive Unit, and the latter modulates the former baseband rf signal of output, and the radiofrequency signal after the output modulation; The output of Transmit Receive Unit is connected to the input of radio frequency amplifying unit, and the latter carries out power amplification to the former signal of output; The output of radio frequency amplifying unit is connected to the input of radio-frequency antenna unit, and the latter carries out wireless transmission with the former signal of output; Wireless communication control unit is connected with the WirelessHD interface, the instruction from the outside is responded and the outside is sent the control of interrupt requests; Wireless communication control unit is connected with base band audio/video coding modulating unit, with realization entire wireless communication system is managed and controls;
One WirelessHD receiver module comprises radio-frequency antenna unit, Transmit Receive Unit, base band audio/video decoding unit, wireless communication control unit and is used to realize WirelessHD interface with outside wired connection; The radio-frequency antenna unit receives and comes from the radiofrequency signal that the WirelessHD transmitter module is launched; The output of radio-frequency antenna unit is connected to the input of Transmit Receive Unit, and the latter carries out demodulation to the former signal of output, exports baseband rf signal then; The output of Transmit Receive Unit is connected to the input of base band audio/video decoding unit, and the latter carries out analog-to-digital conversion and decoding processing to the former signal of output; The output of base band audio/video decoding unit is connected with the WirelessHD interface, to interface rear module output digital audio-video signal; Wireless communication control unit is connected with the WirelessHD interface, the instruction from the outside is responded and the outside is sent the control of interrupt requests; Wireless communication control unit is connected with base band audio/video decoding unit, with realization entire wireless communication system is managed and controls.
The radio-frequency antenna unit of described WirelessHD transmitter module comprises four transmitting antennas and a reception antenna, described reception antenna receives the radiofrequency signal that comes from the passback of WirelessHD receiver module, this radiofrequency signal is used for transmitting control data, this radiofrequency signal receives the Transmit Receive Unit that the WirelessHD transmitter module is directly delivered in the back by the radio-frequency antenna unit of WirelessHD transmitter module, delivers to base band audio/video coding modulating unit through after the demodulation with the form of baseband rf signal.
The radio-frequency antenna unit of described WirelessHD receiver module comprises five reception antennas and a transmitting antenna, and described transmission antennas transmit is used for the radiofrequency signal of transmitting control data.
The Transmit Receive Unit of described WirelessHD transmitter module comprises four road 802.11a/n transmission circuits and a multi-channel switch circuit; The input of four road 802.11a/n transmission circuits is connected to the output of base band audio/video coding modulating unit respectively; The output of four road 802.11a/n transmission circuits is connected to the correspondence input of the radio frequency amplifying unit of WirelessHD transmitter module respectively; The correspondence that the input of multi-channel switch circuit is connected to the radio frequency amplifying unit of WirelessHD transmitter module detects output; The multi-channel switch circuit is connected with base band audio/video coding modulating unit, to base band audio/video coding modulating unit output detection signal, accepts to come from the selection control signal that base band audio/video coding modulating unit is exported.
The Transmit Receive Unit of described WirelessHD receiver module comprises five road 802.11a/n transmission circuits and a multi-channel switch circuit; The input of five road 802.11a/n transmission circuits is connected to the correspondence output of the radio-frequency antenna unit of WirelessHD receiver module respectively; The output of five road 802.11a/n transmission circuits is connected to the input of base band audio/video decoding unit respectively; The input of multi-channel switch circuit is connected to the detection output of corresponding 802.11a/n transmission circuit respectively; The multi-channel switch circuit is connected with base band audio/video decoding unit, to base band audio/video decoding unit output detection signal, accepts to come from the selection control signal that base band audio/video decoding unit is exported.
A kind of wireless digital high resolution interface arrangement that does not have compression of the present utility model, comprise the WirelessHD transmitter module and the WirelessHD receiver module that are separated, WirelessHD transmitter module and WirelessHD receiver module respectively are provided with the WirelessHD interface with the wired connection of realization with the interface external module, come wireless transmission high resolution audio and video data-signal with no compress mode between WirelessHD transmitter module and the WirelessHD receiver module, this interface arrangement adopts joint Source-Channel Coding Technology and video modulation technology, utilize 4 * 5 aerial arrays to adopt MIMO multiple-input, multiple-output radio-frequency technique, use in the 5GHz frequency range of exempting to register, use the bandwidth (with 802.11n and the cordless telephone compatibility on the existing 5GHz frequency range) of OFDM modulation system and 20MHz, with 1.5Gbps～3Gbps transmission non-compression high definition video data signal (1080i, 1080P or higher), also can transmit multi-path digital audio frequency I2S and SPDIF signal simultaneously, need not during error code to pass again.The adaptive advantage of communication quality and signal environment guarantees its picture clear and smooth, and its effective transmission coverage is up to 30 meters.In addition, the picture delay of this kind wireless transmission method only is 1ms, and this ultralow view data has postponed fully to guarantee image real-time (showing as the image when connecting computer game equipment), and this is that other wireless technology institutes are inaccessiable.And but its transfer of data transmitted in both directions is to realize two-way control.The image wireless transmission guarantees the copyright protection of system safety and picture material through digital encryption.Insert rights management control by increasing wireless connections, realize reliable connection management.
A kind of wireless digital high resolution interface arrangement that does not have compression of the present utility model, the WirelessHD interface of WirelessHD transmitter module is used to connect the wired HD video transmission means from different, the interface front end module includes the part that is connected input and the audio frequency and video source is handled that is used for various multimedia audio-videos source, and the WirelessHD interface of treated audio frequency and video digital signal by the WirelessHD transmitter module is admitted to the WirelessHD transmitter module and launches.The WirelessHD interface of WirelessHD receiver module is used to connect display terminal, receive the digital audio-video signal of handling back output by the WirelessHD receiver module, carry out image processing and Audio Processing by the interface rear module again, divide by video image terminal display part, audio output part at last and carry out video image demonstration and analogue audio frequency output respectively.
The beneficial effects of the utility model are, owing to adopted the WirelessHD transmitter module and the WirelessHD receiver module that are separated to constitute the transmission that the wireless digital high resolution interface arrangement that does not have compression does not have the WirelessHD signal of compression, has the adaptive advantage of communication quality and signal environment, can not have compression and ultralowly lingeringly transmit and show the high definition program, have the advantages that high coverage, high antijamming capability through walls and system architecture are simple, system cost is lower, can fully satisfy the family digital radio multimedium and use.
The utility model compared with prior art has the following advantages:
| The WirelessHD interface | 60GHz | WiFi﹠amp; UWB | |
| Image | There is not the problem that causes not having image output because of the image threshold effect in picture quality with the adaptive change of channel SNR value. | There is threshold effect | When image is lower than thresholding in the channel SNR value, no image output.There is threshold effect |
| Quality | Average 43dB PSNR signal to noise ratio | High s/n ratio-TBD | Average 30-35dB PSNR signal to noise ratio |
| Stability | Very high | Quite responsive to the interference around the place | Can't frame decoding in the process that error code can cause compressing once more |
| Recompression | Do not have | Do not have | Need recompression, make image quality decrease |
| Transmitting range | ＞30m can (cement wall) through walls | ＜10m can not be through walls | ~ 10m ... UWB＞30m ... WiFi limited (UWB) through walls |
| Audio-visual synchronization postpones | Be less than 1mS | TBD | The maximum delays of potential audio-visual synchronization delayed video can reach 20～30ms |
| Cost and responsible degree | Low cost, low complex degree need not to compress, error code retransmits, video memory is less than the delay of 1ms | Expensive, high responsible degree technology is responsible for still immature, and antenna is responsible for | Cost is medium, and being responsible for spending higher compression and decompress(ion) increases two-way hardware cost ($$) memory, RF make cost increase ($$ simultaneously) postpone and error code repeating transmission having increased system's property be responsible for and cost ($$) |
Below in conjunction with drawings and Examples the utility model is described in further detail; But a kind of wireless digital high resolution interface arrangement that does not have compression of the present utility model is not limited to embodiment.
Description of drawings
Fig. 1 is a structured flowchart of the present utility model;
Fig. 2 is the circuit theory diagrams of WirelessHD transmitter module of the present utility model;
Fig. 3 is the circuit theory diagrams of WirelessHD receiver module of the present utility model.
Embodiment
Referring to shown in Figure 1, a kind of wireless digital high resolution interface arrangement that does not have compression of the present utility model comprises:
One WirelessHD transmitter module 10 comprises base band audio/video coding modulating unit 11, Transmit Receive Unit 12, radio frequency amplifying unit 13, radio-frequency antenna unit 14, wireless communication control unit 15 and is used to realize WirelessHD interface 16 with outside wired connection; The input of base band audio/video coding modulating unit 11 is connected with WirelessHD interface 16, reception comes from the high resolution audio and video signal of interface front end input, through behind the joint source-channel coding of its baseband coding subelement, export baseband rf signal through after the inner digital-to-analogue conversion again; The output of base band audio/video coding modulating unit 11 is connected to the input of Transmit Receive Unit 12, and the latter modulates the former baseband rf signal of output, and the radiofrequency signal after the output modulation; The output of Transmit Receive Unit 12 is connected to the input of radio frequency amplifying unit 13, and the latter carries out power amplification to the former signal of output; The output of radio frequency amplifying unit 13 is connected to the input of radio-frequency antenna unit 14, and the latter carries out wireless transmission with the former signal of output; Wireless communication control unit 15 is connected with WirelessHD interface 16, the instruction from the outside is responded and the outside is sent the control of interrupt requests; Wireless communication control unit 15 is connected with base band audio/video coding modulating unit 11, with realization entire wireless communication system is managed and controls;
One WirelessHD receiver module 20 comprises radio-frequency antenna unit 21, Transmit Receive Unit 22, base band audio/video decoding unit 23, wireless communication control unit 24 and is used to realize WirelessHD interface 25 with outside wired connection; Radio-frequency antenna unit 21 receives and comes from the radiofrequency signal that WirelessHD transmitter module 10 is launched; The output of radio-frequency antenna unit 21 is connected to the input of Transmit Receive Unit 22, and the latter carries out demodulation to the former signal of output, exports baseband rf signal then; The output of Transmit Receive Unit 22 is connected to the input of base band audio/video decoding unit 23, and the latter carries out analog-to-digital conversion and decoding processing to the former signal of output; The output of base band audio/video decoding unit 23 is connected with WirelessHD interface 25, to interface rear module output digital audio-video signal; Wireless communication control unit 24 is connected with WirelessHD interface 25, the instruction from the outside is responded and the outside is sent the control of interrupt requests; Wireless communication control unit 24 is connected with base band audio/video decoding unit 23, with realization entire wireless communication system is managed and controls.
Referring to shown in Figure 2, Fig. 2 is the WirelessHD transmitter module 10 of wireless digital high resolution interface arrangement, and the base band audio/video coding modulating unit 11 of WirelessHD transmitter module 10 adopts baseband chip XOC1210; The Transmit Receive Unit 12 of WirelessHD transmitter module 10 comprises four road 802.11a/n transmission circuits and a multi-channel switch circuit, and the input of four road 802.11a/n transmission circuits is connected to the baseband signal I/Q difference output interface of baseband chip XOC1210 respectively; The radio frequency amplifying unit 13 of WirelessHD transmitter module 10 comprises four way RF power amplifying circuits; The output of four road 802.11a/n transmission circuits is connected with the input of corresponding rf power amplifier circuit respectively; The input of multi-channel switch circuit is connected to the detection output of each way RF power amplifying circuit respectively; The multi-channel switch circuit is connected with baseband chip XOC1210, to baseband chip XOC1210 output detection signal, acceptance comes from the selection control signal that baseband chip XOC1210 is exported, like this, baseband chip XOC1210 can detect the radio-frequency (RF) signal strength that each rf power amplifier circuit feeds back, and then controls each road radiofrequency signal gain amplifier; The radio-frequency antenna unit 14 of WirelessHD transmitter module 10 comprises four downlink antennas and a up reception antenna, article four, the corresponding respectively output that is connected to four way RF power amplifying circuits of downlink antenna, up reception antenna is used to receive two-way communication data radiofrequency signal, be that up reception antenna receives the radiofrequency signal that comes from the passback of WirelessHD receiver module, this radiofrequency signal is used for transmitting control data, this radiofrequency signal receives the back by reception antenna and is directly delivered to wherein in one tunnel the 802.11a/n transmission circuit, after the demodulation of this signal process 802.11a/n transmission circuit up passback data are delivered among the baseband chip XOC1210, thereby realized two-way control; The wireless communication control unit 15 of WirelessHD transmitter module 10 adopts MCU control chip XOC1203, MCU control chip XOC1203 is the connection control of being responsible for radio communication MAC layer, it can respond the interruption from baseband chip XOC1210, to the baseband chip XOC1210 control that resets, simultaneously between MCU control chip XOC1203 and the baseband chip XOC1210 with SPI serial peripheral interface mode Communication Control, MCU control chip XOC1203 is by the memory stores initialize routine, MCU control chip XOC1203 can outwards send interrupt requests, and communicates by letter with extraneous in the mode of I2C bus as the communication ends of module.Clock circuit is baseband chip XOC1210, and the 802.11a/n transmission circuit provides system clock.
Wherein, the way RF power amplifying circuit of each 802.11a/n transmission circuit of Transmit Receive Unit 12 and multi-channel switch circuit and radio frequency amplifying unit 13 also can use the single chip solution of having integrated rf modulations and amplification to realize (shown in empty frame among Fig. 2).
By the 30bit digital video signal (also can be 24bit～30bitRGB or YCbCr signal) of WirelessHD interface 16 output video port to baseband chip XOC1210, export one or more SPDIF and I2S digital audio and video signals audio port simultaneously, export GPIO control signal and reset signal in addition and wait until baseband chip XOC1210 to baseband chip XOC1210.In baseband chip XOC1210, digital video signal of input (if YCbCr signal need through after the color space transformation) and digital audio and video signals (selecting to control through multichannel) are sent to the in-line coding subelement, behind the joint source-channel coding through the baseband coding subelement, again through exporting the differential signal of four roadbed band I/Q respectively to four road 802.11a/n transmission circuits by the baseband signal I/Q difference output interface of baseband chip XOC1210 after the inner digital-to-analogue conversion, 802.11a/n transmission circuit is modulated to the baseband rf signal of input on the frequency range of 4.9GHz～5.875GHz, radiofrequency signal after the modulation is delivered to respectively in the rf power amplifier circuit with the corresponding connection of 802.11a/n transmission circuit carries out power amplification, then launches by the transmitting antenna of corresponding connection with rf power amplifier circuit again.Deliver to MCU control chip XOC1203 from the control signal of WirelessHD interface 16 outputs with the form of I2C bus and I/O control, MCU control chip XOC1203 responds the instruction from the outside, also the outside is sent controls such as interrupt requests simultaneously; MCU control chip XOC1203, to the managing and controlling of entire wireless communication system, it is controlled init state control and the radio communication MAC layer of baseband chip XOC1210 by the mode of SPI (serial peripheral interface) communication; Simultaneously control signal also realizes communicating by letter of transmitter module and receiver module control unit through the wireless transmission link.
Referring to shown in Figure 3, Fig. 3 is the WirelessHD receiver module 20 of wireless digital high resolution interface arrangement, and the base band audio/video decoding unit 23 of WirelessHD receiver module 20 adopts baseband chip XOC2210; The Transmit Receive Unit 22 of WirelessHD receiver module 20 comprises five road 802.11a/n transmission circuits and a multi-channel switch circuit, and the output of five road 802.11a/n transmission circuits is connected to the baseband signal I/Q difference output interface of baseband chip XOC2210 respectively; The input of multi-channel switch circuit is connected to the detection output of each road 802.11a/n transmission circuit respectively; The multi-channel switch circuit is connected with baseband chip XOC2210, to baseband chip XOC2210 output detection signal, acceptance comes from the selection control signal that baseband chip XOC2210 is exported, like this, baseband chip XOC2210 detects and controls the radio frequency signal transmit-receive intensity by the multi-channel switch circuit; The radio-frequency antenna unit 21 of WirelessHD receiver module 20 comprises five descending reception antennas and a up transmitting antenna, article five, the corresponding respectively input that is connected to five road 802.11a/n transmission circuits of the output of descending reception antenna, up transmitting antenna is used to launch two-way communication data radiofrequency signal, it is up transmission antennas transmit communication data radiofrequency signal, up reception antenna by WirelessHD transmitter module 10 receives, this radiofrequency signal is used for transmitting control data, this radiofrequency signal is delivered to wherein by baseband chip XOC2210 in one tunnel the 802.11a/n transmission circuit, this signal is delivered to up passback data in one rf signal amplification circuit through 802.11a/n transmission circuit modulation back, give up transmitting antenna by rf signal amplification circuit again and launch, thereby realize two-way control; The wireless communication control unit 24 of WirelessHD receiver module 20 adopts MCU control chip XOC1203, MCU control chip XOC1203 is the connection control of being responsible for radio communication MAC layer, it can respond the interruption from baseband chip XOC2210, to the baseband chip XOC2210 control that resets, simultaneously between MCU control chip XOC1203 and the baseband chip XOC2210 with SPI serial peripheral interface mode Communication Control, MCU control chip XOC1203 is by the memory stores initialize routine, MCU control chip XOC1203 can outwards send interrupt requests, and communicates by letter with extraneous in the mode of I2C bus as the communication ends of module.Clock circuit is baseband chip XOC2210, and the 802.11a/n transmission circuit provides system clock.
Wherein, each 802.11a/n transmission circuit of Transmit Receive Unit 22 and multi-channel switch circuit and the rf signal amplification circuit that is used for transmitting control data also can use the single chip solution of having integrated rf modulations and amplification to realize (shown in the empty frame of Fig. 3).
The radiofrequency signal that receives by descending reception antenna, deliver to the 802.11a/n transmission circuit and carry out demodulation, deliver to again among the baseband chip XOC2210 by baseband I/Q differential signal that the 802.11a/n transmission circuit solves, in baseband chip XOC2210, through the internal mode number conversion, data are through the decoding of downlink data physical layer, take out end module output digital audio-video signal (if the vision signal of transmitting terminal input is YCbCr to interface then, then after this place needs through the color space transformation processing, output YCbCr signal), be the 30bit digital video signal (also can be 24bit～30bit RGB or YCbCr signal) behind the baseband chip XOC2210 output decoder, export one or more SPDIF and I2S digital audio and video signals simultaneously and give interface 25 rear module.The response of baseband chip GPIO mouth is from the IO control of WirelessHD interface outside, and response simultaneously resets.Deliver to MCU control chip XOC1203 from the control signal of interface 25 rear module output with the form of I2C bus and I/O control, MCU control chip XOC1203 responds the instruction from the outside, also the outside is sent controls such as interrupt requests simultaneously; MCU control chip XOC1203, to the managing and controlling of entire wireless communication system, it is controlled init state control and the radio communication MAC layer of baseband chip XOC2210 by the mode of SPI (serial peripheral interface) communication; Simultaneously control signal also realizes communicating by letter of transmitter module and receiver module control unit through the wireless transmission link.
A kind of wireless digital high resolution interface arrangement that does not have compression of the present utility model, comprise the WirelessHD transmitter module 10 and the WirelessHD receiver module 20 that are separated, WirelessHD transmitter module 10 and WirelessHD receiver module 20 respectively are provided with WirelessHD interface 16, WirelessHD interface 25 is with the wired connection of realization with the interface external module, come wireless transmission high resolution audio and video data-signal with no compress mode between WirelessHD transmitter module 10 and the WirelessHD receiver module 20, this interface arrangement adopts joint Source-Channel Coding Technology and video modulation technology, utilize 4 * 5 aerial arrays to adopt MIMO multiple-input, multiple-output radio-frequency technique, use in the 5GHz frequency range of exempting to register, use the bandwidth (with 802.11n and the cordless telephone compatibility on the existing 5GHz frequency range) of OFDM modulation system and 20MHz, with 1.5Gbps～3Gbps transmission non-compression high definition video data signal (1080i, 1080P or higher), also can transmit multi-path digital audio frequency I2S and SPDIF signal simultaneously, need not during error code to pass again.The adaptive advantage of communication quality and signal environment guarantees its picture clear and smooth, and its effective transmission coverage is up to 30 meters.In addition, the picture delay of this kind wireless transmission method only is 1ms, and this ultralow view data has postponed fully to guarantee image real-time (showing as the image when connecting computer game equipment), and this is that other wireless technology institutes are inaccessiable.And but its transfer of data transmitted in both directions is to realize two-way control.The image wireless transmission guarantees the copyright protection of system safety and picture material through digital encryption.Insert rights management control by increasing wireless connections, realize reliable connection management.
A kind of wireless digital high resolution interface arrangement that does not have compression of the present utility model, the WirelessHD interface of WirelessHD transmitter module 10 is used to connect the wired HD video transmission means from different, the interface front end module includes the part that is connected input and the audio frequency and video source is handled that is used for various multimedia audio-videos source, and the WirelessHD interface 16 of treated audio frequency and video digital signal by the WirelessHD transmitter module is admitted to WirelessHD transmitter module 10 and launches.The WirelessHD interface 25 of WirelessHD receiver module is used to connect display terminal, receive the digital audio-video signal of handling back output by WirelessHD receiver module 20, carry out image processing and Audio Processing by the interface rear module again, divide by video image terminal display part, audio output part at last and carry out video image demonstration and analogue audio frequency output respectively.
The foregoing description only is used for further specifying a kind of wireless digital high resolution interface arrangement that does not have compression of the present utility model; but the utility model is not limited to embodiment; every foundation technical spirit of the present utility model all falls in the protection range of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.
Claims (5)
1. wireless digital high resolution interface arrangement that does not have compression is characterized in that: comprising:
One WirelessHD transmitter module comprises base band audio/video coding modulating unit, Transmit Receive Unit, radio frequency amplifying unit, radio-frequency antenna unit, wireless communication control unit and is used to realize WirelessHD interface with outside wired connection; The input of base band audio/video coding modulating unit is connected with the WirelessHD interface, reception comes from the high resolution audio and video signal of interface front end input, through behind the joint source-channel coding of its baseband coding subelement, export baseband rf signal through after the inner digital-to-analogue conversion again; The output of base band audio/video coding modulating unit is connected to the input of Transmit Receive Unit, and the latter modulates the former baseband rf signal of output, and the radiofrequency signal after the output modulation; The output of Transmit Receive Unit is connected to the input of radio frequency amplifying unit, and the latter carries out power amplification to the former signal of output; The output of radio frequency amplifying unit is connected to the input of radio-frequency antenna unit, and the latter carries out wireless transmission with the former signal of output; Wireless communication control unit is connected with the WirelessHD interface, the instruction from the outside is responded and the outside is sent the control of interrupt requests; Wireless communication control unit is connected with base band audio/video coding modulating unit, with realization entire wireless communication system is managed and controls;
One WirelessHD receiver module comprises radio-frequency antenna unit, Transmit Receive Unit, base band audio/video decoding unit, wireless communication control unit and is used to realize WirelessHD interface with outside wired connection; The radio-frequency antenna unit receives and comes from the radiofrequency signal that the WirelessHD transmitter module is launched; The output of radio-frequency antenna unit is connected to the input of Transmit Receive Unit, and the latter carries out demodulation to the former signal of output, exports baseband rf signal then; The output of Transmit Receive Unit is connected to the input of base band audio/video decoding unit, and the latter carries out analog-to-digital conversion and decoding processing to the former signal of output; The output of base band audio/video decoding unit is connected with the WirelessHD interface, to interface rear module output digital audio-video signal; Wireless communication control unit is connected with the WirelessHD interface, the instruction from the outside is responded and the outside is sent the control of interrupt requests; Wireless communication control unit is connected with base band audio/video decoding unit, with realization entire wireless communication system is managed and controls.
2. a kind of wireless digital high resolution interface arrangement that does not have compression according to claim 1, it is characterized in that: the radio-frequency antenna unit of described WirelessHD transmitter module comprises four transmitting antennas and a reception antenna, described reception antenna receives the radiofrequency signal that comes from the passback of WirelessHD receiver module, this radiofrequency signal is used for transmitting control data, this radiofrequency signal receives the Transmit Receive Unit that the WirelessHD transmitter module is directly delivered in the back by the radio-frequency antenna unit of WirelessHD transmitter module, delivers to base band audio/video coding modulating unit through after the demodulation with the form of baseband rf signal.
3. a kind of wireless digital high resolution interface arrangement that does not have compression according to claim 1, it is characterized in that: the radio-frequency antenna unit of described WirelessHD receiver module comprises five reception antennas and a transmitting antenna, and described transmission antennas transmit is used for the radiofrequency signal of transmitting control data.
4. a kind of wireless digital high resolution interface arrangement that does not have compression according to claim 1 is characterized in that: the Transmit Receive Unit of described WirelessHD transmitter module comprises four road 802.11a/n transmission circuits and a multi-channel switch circuit; The input of four road 802.11a/n transmission circuits is connected to the output of base band audio/video coding modulating unit respectively; The output of four road 802.11a/n transmission circuits is connected to the correspondence input of the radio frequency amplifying unit of WirelessHD transmitter module respectively; The correspondence that the input of multi-channel switch circuit is connected to the radio frequency amplifying unit of WirelessHD transmitter module detects output; The multi-channel switch circuit is connected with base band audio/video coding modulating unit, to base band audio/video coding modulating unit output detection signal, accepts to come from the selection control signal that base band audio/video coding modulating unit is exported.
5. a kind of wireless digital high resolution interface arrangement that does not have compression according to claim 1 is characterized in that: the Transmit Receive Unit of described WirelessHD receiver module comprises five road 802.11a/n transmission circuits and a multi-channel switch circuit; The input of five road 802.11a/n transmission circuits is connected to the correspondence output of the radio-frequency antenna unit of WirelessHD receiver module respectively; The output of five road 802.11a/n transmission circuits is connected to the input of base band audio/video decoding unit respectively; The input of multi-channel switch circuit is connected to the detection output of corresponding 802.11a/n transmission circuit respectively; The multi-channel switch circuit is connected with base band audio/video decoding unit, to base band audio/video decoding unit output detection signal, accepts to come from the selection control signal that base band audio/video decoding unit is exported.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200083071U CN201114507Y (en) | 2007-09-20 | 2007-09-20 | A wireless digital high-definition interface device without compression |
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| CNU2007200083071U CN201114507Y (en) | 2007-09-20 | 2007-09-20 | A wireless digital high-definition interface device without compression |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101877606A (en) * | 2010-05-25 | 2010-11-03 | 合肥润东通讯科技有限公司 | Wireless high-definition audio and video transmitting set |
| CN101888496A (en) * | 2010-06-25 | 2010-11-17 | 深圳市高斯贝尔家居智能电子有限公司 | Wireless high definition module, and transmitting module and receiving module thereof |
| CN102811334A (en) * | 2012-07-10 | 2012-12-05 | 杭州海康威视数字技术股份有限公司 | System and method for transmitting high-definition video signal in dome camera |
| CN102053659B (en) * | 2009-11-06 | 2013-05-22 | 宏碁股份有限公司 | Wireless transmission interface for transmitting video signals and power control method thereof |
| CN103391474A (en) * | 2013-07-19 | 2013-11-13 | 深圳市同洲电子股份有限公司 | Audio and video transmission method and digital television terminal |
| TWI449426B (en) * | 2009-07-21 | 2014-08-11 | Lg Innotek Co Ltd | Transmission device and reception device of wireless av system |
| CN104883526A (en) * | 2015-06-19 | 2015-09-02 | 深圳市影歌科技有限公司 | System and method for 360 DEG high-definition image transmission |
| CN111384993A (en) * | 2020-03-20 | 2020-07-07 | 钟杰东 | ZJD baseband chip and ZJD baseband chip management system |
| CN116800293A (en) * | 2023-08-24 | 2023-09-22 | 苏州门海微电子科技有限公司 | Base band chip and radio frequency chip synchronization method, base band chip and radio frequency chip |
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| TWI449426B (en) * | 2009-07-21 | 2014-08-11 | Lg Innotek Co Ltd | Transmission device and reception device of wireless av system |
| CN102053659B (en) * | 2009-11-06 | 2013-05-22 | 宏碁股份有限公司 | Wireless transmission interface for transmitting video signals and power control method thereof |
| CN101877606A (en) * | 2010-05-25 | 2010-11-03 | 合肥润东通讯科技有限公司 | Wireless high-definition audio and video transmitting set |
| CN101888496A (en) * | 2010-06-25 | 2010-11-17 | 深圳市高斯贝尔家居智能电子有限公司 | Wireless high definition module, and transmitting module and receiving module thereof |
| CN101888496B (en) * | 2010-06-25 | 2012-09-12 | 深圳市视晶无线技术有限公司 | Wireless high definition module, and transmitting module and receiving module thereof |
| CN102811334A (en) * | 2012-07-10 | 2012-12-05 | 杭州海康威视数字技术股份有限公司 | System and method for transmitting high-definition video signal in dome camera |
| CN103391474A (en) * | 2013-07-19 | 2013-11-13 | 深圳市同洲电子股份有限公司 | Audio and video transmission method and digital television terminal |
| CN104883526A (en) * | 2015-06-19 | 2015-09-02 | 深圳市影歌科技有限公司 | System and method for 360 DEG high-definition image transmission |
| CN104883526B (en) * | 2015-06-19 | 2018-05-15 | 深圳市爱图仕影像器材有限公司 | A kind of 360 degree of high-definition image transmission systems and method |
| CN111384993A (en) * | 2020-03-20 | 2020-07-07 | 钟杰东 | ZJD baseband chip and ZJD baseband chip management system |
| CN116800293A (en) * | 2023-08-24 | 2023-09-22 | 苏州门海微电子科技有限公司 | Base band chip and radio frequency chip synchronization method, base band chip and radio frequency chip |
| CN116800293B (en) * | 2023-08-24 | 2023-11-03 | 苏州门海微电子科技有限公司 | Base band chip and radio frequency chip synchronization method, base band chip and radio frequency chip |
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