CN1885914A - Transmitter and receiver for wireless high-definition television signal - Google Patents
Transmitter and receiver for wireless high-definition television signal Download PDFInfo
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- CN1885914A CN1885914A CN 200510077273 CN200510077273A CN1885914A CN 1885914 A CN1885914 A CN 1885914A CN 200510077273 CN200510077273 CN 200510077273 CN 200510077273 A CN200510077273 A CN 200510077273A CN 1885914 A CN1885914 A CN 1885914A
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Abstract
The disclosed emission device for wireless HDTV comprises: a signal receiving unit, an AD unit for video/audio, a compressing and coding unit, a transmission control unit, and a wireless signal transmission unit adopted ultra broadband technique. It also discloses a receiving device. This invention applies 110Mbps speed as ultra broadband technique to realize high-resolution signal and Hi-Fi audio.
Description
Technical field
The present invention relates to TV signal and receive and emitter, relate in particular to a kind of transmitting and receiving device of wireless high-definition television signal.
Background technology
The transmission system of TV signal mainly is divided into two kinds at present: wire transmission and wireless transmission.Though wire transmission technology has very big superiority on signal transmission quality, television set put the restriction that is subjected to transmission line.Therefore, can receive television signal with high quality by wireless mode and become a developing direction.
A lot of in existing Radio Transmission Technology kind, the theoretical bandwidth of 802.11 serial protocols of bandwidth maximum also can only reach 54M, use the requirement that can't satisfy the high-definition digital signal on TV, and encryption mechanism is not very perfect.
Summary of the invention
The problem to be solved in the present invention provides a kind of transmitting and receiving device of wireless high-definition television signal, to overcome the defective that can not transmit the HD digital TV signal in the prior art.
For achieving the above object, the invention provides a kind of emitter of wireless high-definition television signal, comprise: signal receiving unit, the video AD conversion unit, the audio frequency AD conversion unit, compressed encoding unit, send signaling control unit, the wireless signal transmitting element, wherein, the signal that described signal receiving unit receives becomes digital video signal and digital audio and video signals through described video AD conversion unit and audio frequency AD conversion unit, and compress by described compressed encoding unit, under the control of described transmission signaling control unit, send then by described wireless signal transmitting element, described wireless signal transmitting element adopts super-broadband tech to send wireless signal, further comprises:
Ultra broadband emission subelement, ultra broadband digital-to-analogue conversion subelement, transmission signal processing subelement, described transmission signal processing subelement receives the signal that described transmission signaling control unit is sent, be converted to analog signal by described ultra broadband digital-to-analogue conversion subelement, send to wireless network by described ultra broadband emission subelement again; Or the digital signal that directly will not pass through digital-to-analogue conversion by described ultra broadband emission subelement sends to wireless network.
Described transmission signaling control unit further comprises: transmitting terminal copyright management subelement is used for increasing authorization message to sending signal.
Described control unit also comprises: encrypt subelement.
Described signal receiving unit receives cable TV signal, IP broadband network signal or DSL signal.
Also comprise wired signal transmitting unit, link to each other, and send signal to lan network with described transmission signaling control unit.
The invention also discloses a kind of receiving system of wireless high-definition television signal, comprise: signal transmitting unit, the video D/A conversion unit, the audio frequency D/A conversion unit, the decompression coding unit, the received signal control unit, the wireless signal receiving element, wherein, described radio receiving unit receives wireless signal from wireless network, send to the decompression coding unit by the received signal control unit, send to video D/A conversion unit and audio frequency D/A conversion unit after the decompression respectively, send to television display unit by described signal transmitting unit at last, described wireless signal receiving element adopts super-broadband tech to receive wireless signal, further comprises:
Ultra broadband receives subelement, ultra broadband analog-to-digital conversion subelement, received signal processing subelement, described ultra broadband receives subelement and receives wireless signal from wireless network, if this wireless signal is an analog signal, then become digital signal, handle subelement through received signal again and enter described received signal control unit through ultra broadband analog-to-digital conversion subelement; If this wireless signal is a digital signal, then directly handles subelement and enter described received signal control unit through received signal.
Described control unit further comprises: receiving terminal copyright management subelement.
Described control unit further comprises: the deciphering subelement.
Also comprise wired signal receiving unit, will send to described received signal control unit from the wire signal that lan network receives.
Receive the signal of the dispensing device of one or more wireless high-definition television signals.
Compared with prior art, the present invention has the following advantages:
The transmitting and receiving device of wireless high-definition television signal of the present invention, utilize UWB (ULTRA WIDEBAND ultra broadband) technology to realize the wireless channel transmission of audio-video signal with the speed of 110Mbps, therefore, high definition signal (1080P or higher) and high-fidelity tonequality (5.1 sound channels or 7.1 sound channels or higher) have been realized; And data are two-way interactives, are convenient to control information transmission; And, realized the authentication functions of information by increasing the copyright management unit of receiving terminal and transmitting terminal; And, increased the fail safe of system by increasing the encryption and decryption unit.
In addition, the present invention promptly can carry out the signal transmission by wireless mode, also can carry out the signal transmission by existing cable technology.
Description of drawings
Fig. 1 is overall structure figure of the present invention;
Fig. 2 is a system of the present invention pie graph;
Fig. 3 is the emitter pie graph of wireless high-definition television signal of the present invention;
Fig. 4 is the receiving system pie graph of wireless high-definition television signal of the present invention;
Fig. 5 is wireless signal transmission of the present invention unit concrete structure figure;
Fig. 6 is wireless signal receiving element concrete structure figure of the present invention;
Fig. 7 is the circuit diagram of wireless signal transmission unit and wireless signal receiving element in the side circuit of the present invention;
Fig. 8 is butt joint collection of letters breath identifying procedure figure in the receiving system of the present invention;
Fig. 9 is that the present invention one receives under the multiple situation receiving system workflow diagram.
Embodiment
Below we will be in conjunction with the accompanying drawings, optimum implementation of the present invention is described in detail.At first it is to be noted, the implication of the term of using among the present invention, words and claim can not only only limit to its literal and common implication and go to understand, also comprise the implication and the notion that into conform to technology of the present invention, this is because we are as the inventor, to suitably provide the definition of term, so that the most appropriate description is carried out in our invention.Therefore, the configuration that provides in this explanation and the accompanying drawing is first-selected embodiment of the present invention, rather than will enumerates all technical characteristics of the present invention.We will recognize to also have the various equivalent scheme or the modifications that can replace our scheme.
The total system that the present invention uses as depicted in figs. 1 and 2, comprise wireless high-definition television signal emitter 10 and the receiving system 20 of wireless high-definition television signal.Described wireless high-definition television signal emitter 10 mainly links to each other with carrier network and SP network, can obtain transmission signals by cable TV network interface 40, IP Broadband Network Interface 60 or DSL interface 70, wherein, cable TV network interface 40 and DSL interface 70 need respectively to decode by first decoder 50 and second decoder 80; Certainly, wireless high-definition television signal emitter 10 also can be from satellite-signal, land signal, carry-on movie theatre, PVR, DVD, VCD or wireless terminal picked up signal such as (notebook, wireless cameras).The signal that receives is sent to TV with the receiving system 20 of wireless high-definition television signal or other display terminal is play.
The structure of described wireless high-definition television signal emitter 10 as shown in Figure 3, comprise: signal receiving unit 11, video AD conversion unit 12, audio frequency AD conversion unit 13, compressed encoding unit 14, send signaling control unit 15, memory cell 16, wireless signal transmitting element 18 and wire signal transmitting element 17, wherein, the signal that described signal receiving unit 11 receives becomes digital video signal and digital audio and video signals through described video AD conversion unit 12 and audio frequency AD conversion unit 13, and compress by described compressed encoding unit 14, under the control of described transmission signaling control unit 15, send or, send signal to wireless network then to lan network by wire signal transmitting element 17 by described wireless signal transmitting element 18.
The present invention adopts the Freescale chipset, utilizes UWB (ULTRA WIDE BAND ultra broadband) technology with the speed of 110Mbps audio-video signal to be transferred to TV by wireless channel and gets on.Described transmission signaling control unit 18 further comprises: ultra broadband emission subelement 181, ultra broadband digital-to-analogue conversion subelement 182, transmission signal processing subelement 183, described transmission signal processing subelement 183 receives the signal that described transmission signaling control unit 15 is sent, be converted to analog signal by described ultra broadband digital-to-analogue conversion subelement 182, send to wireless network by described ultra broadband emission subelement 181 again.Behind the signal that the described transmission signaling control unit 15 of certain described transmission signal processing subelement 183 receptions is sent, also the digital signal that can directly will not pass through digital-to-analogue conversion by described ultra broadband emission subelement sends to wireless network.In the side circuit, described transmission signaling control unit 18 had both had the function that sends signal, can receive control signal simultaneously, so circuit as shown in Figure 7.Wherein, send the signal processing subelement and comprise the baseband circuit that constitutes by DSP and MAC chip, and launch the radio circuit that subelement, ultra broadband reception subelement and phase-locked loop constitute by ultra broadband.
Described transmission signaling control unit 15 links to each other with the physical layer interface chip of wire signal transmitting element by the 802.3MAC interface for processor chips constitute; Link to each other with the wireless signal transmitting element by the PC card interface controller; Have GPIO (general I/O), bus expansion interface and RS232 interface, when system need adopt far-end serial communication or control, GPIO can provide extra control and function for monitoring; Also have the network service control device, can be to memory cell 16 stored informations, or recalls information therefrom.In addition, in sending signaling control unit 15, also comprise the digital copyright management subelement and encrypt subelement that described digital copyright management subelement can obtain it from the related right people and authorize, and it is applied in our product.Digital rights information is to be integrated in file inside, merges into an organic whole fully with file; Described encryption subelement can make the normal reception information of receiving terminal ability that only has decipher function to the information encryption that will send, and has increased fail safe.
The receiving system 20 of described wireless high-definition television signal comprises as shown in Figure 4: signal transmitting unit 21, video D/A conversion unit 22, audio frequency D/A conversion unit 23, decompression coding unit 24, received signal control unit 25, wireless signal receiving element 28, wire signal receiving element 27 and memory cell 26.Described wire signal receiving element 27 will send to described received signal control unit from the wire signal that lan network receives, or receive wireless signal by described wireless signal receiving element 28 from wireless network; The wired or wireless signal that receives sends to decompression coding unit 24 by received signal control unit 25, send to video D/A conversion unit 22 and audio frequency D/A conversion unit 23 after the decompression respectively, send to television display unit 30 by described signal transmitting unit 21 at last.
Described wireless signal receiving element 28 adopts super-broadband tech to receive wireless signal, further comprise: ultra broadband receives subelement 281, ultra broadband analog-to-digital conversion subelement 282, received signal processing subelement 283, described ultra broadband receives subelement 281 and receives wireless signal from wireless network, when this wireless signal is analog signal, become digital signal through ultra broadband analog-to-digital conversion subelement 282, handle subelement 283 through received signal again and enter described received signal control unit; If this wireless signal is a digital signal, then directly handling subelement through received signal enters in the described received signal control unit side circuit, described transmission signaling control unit 28 had both had the function of received signal, can transmit control signal simultaneously, so circuit as shown in Figure 7.Wherein, received signal is handled subelement and is comprised the baseband circuit that is made of DSP and MAC chip, and receives the radio circuit that subelement, ultra broadband emission subelement and phase-locked loop constitute by ultra broadband.
The received signal control unit of described device has and corresponding digital copyright management subelement of control unit and the deciphering subelement of transmitting.When receiving terminal has signaling interface widely, can provide five-star digital signal interface and analog signal interface, such as DVI and color difference components.Receiving terminal receives that the high-definition signal that transmits sends into the processing that primary processor is decrypted by the interface of ultra broadband, and user's right authenticated, after confirming as the user of mandate, data are delivered to and are gone decoding in the high definition decoding chip again, be reduced into the audio-video signal of high definition, directly deliver to high definition TV by digital interface.Or convert analog signal to and deliver on the TV that does not have the digital high-definition interface.Above-mentioned verification process comprises as shown in Figure 8: step S101, read fileinfo, and isolate copyright information; Step S102 judges whether to be authorization message; Step S103 is if operation such as play; Step S104 if not, then sends alarm, and end operation; Step S105 finishes.
Receiving system among the present invention and generating means are to use one to one generally speaking, but also can realize multicast or the multiple function of receipts.So-called multicast is exactly that a generating means sends signal, has a plurality of receiving systems to receive this signal simultaneously, and this method is identical with the transmission technology of wireless television signal in the prior art.One receipts pilosity is exactly that a plurality of emitters send signals, has only receiving system received signal selectively.For example, in open space, be based upon the channel that can have on several frequency ranges, these information have access control interface mutually noninterfere separately, the user specifies the receiving equipment can be with being intended to select one in these interfaces, so that can add selected channel, there are a plurality of channels in the same time internal space, so as long as legal interface is arranged, the user can receive wherein any one, can only add a channel in certain same time.The course of work of the multiple receiving system of described receipts comprises as shown in Figure 9:
Step S201, power-up initializing;
Step S202, search signal and channel;
Step S203 judges whether to search the transmission signal;
Step S204, if, lock channel, decoding, output;
Step S205 if not, shows not search the transmission signal, waits for again manual location.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1, a kind of emitter of wireless high-definition television signal, comprise: signal receiving unit, the video AD conversion unit, the audio frequency AD conversion unit, compressed encoding unit, send signaling control unit, the wireless signal transmitting element, wherein, the signal that described signal receiving unit receives becomes digital video signal and digital audio and video signals through described video AD conversion unit and audio frequency AD conversion unit, and compress by described compressed encoding unit, under the control of described transmission signaling control unit, send then by described wireless signal transmitting element, it is characterized in that, described wireless signal transmitting element adopts super-broadband tech to send wireless signal, further comprises:
Ultra broadband emission subelement, ultra broadband digital-to-analogue conversion subelement, transmission signal processing subelement, described transmission signal processing subelement receives the signal that described transmission signaling control unit is sent, be converted to analog signal by described ultra broadband digital-to-analogue conversion subelement, send to wireless network by described ultra broadband emission subelement again; Or the digital signal that directly will not pass through digital-to-analogue conversion by described ultra broadband emission subelement sends to wireless network.
2, the emitter of wireless high-definition television signal according to claim 1 is characterized in that described transmission signaling control unit further comprises: transmitting terminal copyright management subelement is used for increasing authorization message to sending signal.
3, the emitter of wireless high-definition television signal according to claim 1 is characterized in that described control unit also comprises: encrypt subelement.
4, the emitter of wireless high-definition television signal according to claim 1 is characterized in that, described signal receiving unit receives cable TV signal, IP broadband network signal or DSL signal.
5, the emitter of wireless high-definition television signal according to claim 1 is characterized in that, also comprises wired signal transmitting unit, links to each other with described transmission signaling control unit, and sends signal to lan network.
6, a kind of receiving system of wireless high-definition television signal, comprise: signal transmitting unit, the video D/A conversion unit, the audio frequency D/A conversion unit, the decompression coding unit, the received signal control unit, the wireless signal receiving element, wherein, described radio receiving unit receives wireless signal from wireless network, send to the decompression coding unit by the received signal control unit, send to video D/A conversion unit and audio frequency D/A conversion unit after the decompression respectively, send to television display unit by described signal transmitting unit at last, it is characterized in that, described wireless signal receiving element adopts super-broadband tech to receive wireless signal, further comprises:
Ultra broadband receives subelement, ultra broadband analog-to-digital conversion subelement, received signal processing subelement, described ultra broadband receives subelement and receives wireless signal from wireless network, if this wireless signal is an analog signal, then become digital signal, handle subelement through received signal again and enter described received signal control unit through ultra broadband analog-to-digital conversion subelement; If this wireless signal is a digital signal, then directly handles subelement and enter described received signal control unit through received signal.
7, as the receiving system of wireless high-definition television signal as described in the claim 6, it is characterized in that described control unit further comprises: receiving terminal copyright management subelement.
8, as the receiving system of wireless high-definition television signal as described in the claim 6, it is characterized in that described control unit further comprises: the deciphering subelement.
9, as the receiving system of wireless high-definition television signal as described in the claim 6, it is characterized in that, also comprise wired signal receiving unit, will send to described received signal control unit from the wire signal that lan network receives.
10, as the receiving system of wireless high-definition television signal as described in the claim 6, it is characterized in that, receive the signal of the dispensing device of one or more wireless high-definition television signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510077273 CN1885914A (en) | 2005-06-21 | 2005-06-21 | Transmitter and receiver for wireless high-definition television signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510077273 CN1885914A (en) | 2005-06-21 | 2005-06-21 | Transmitter and receiver for wireless high-definition television signal |
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| Publication Number | Publication Date |
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| CN1885914A true CN1885914A (en) | 2006-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200510077273 Pending CN1885914A (en) | 2005-06-21 | 2005-06-21 | Transmitter and receiver for wireless high-definition television signal |
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Cited By (3)
| 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 |
| CN101895745A (en) * | 2009-04-20 | 2010-11-24 | 索尼公司 | Radio transmitters, radio communication method, wireless receiver and method of wireless reception |
| CN101521852B (en) * | 2009-03-24 | 2011-05-18 | 华南理工大学 | Mobile digital television broadcasting method of mobile digital TV broadcasting system |
-
2005
- 2005-06-21 CN CN 200510077273 patent/CN1885914A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101521852B (en) * | 2009-03-24 | 2011-05-18 | 华南理工大学 | Mobile digital television broadcasting method of mobile digital TV broadcasting system |
| CN101895745A (en) * | 2009-04-20 | 2010-11-24 | 索尼公司 | Radio transmitters, radio communication method, wireless receiver and method of wireless reception |
| CN101895745B (en) * | 2009-04-20 | 2013-01-16 | 索尼公司 | Wireless transmitter, wireless transmission method, wireless receiver and wireless reception method |
| 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 |
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Open date: 20061227 |