CN104427375A - video and audio transmission device and system thereof - Google Patents
video and audio transmission device and system thereof Download PDFInfo
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- CN104427375A CN104427375A CN201310412310.XA CN201310412310A CN104427375A CN 104427375 A CN104427375 A CN 104427375A CN 201310412310 A CN201310412310 A CN 201310412310A CN 104427375 A CN104427375 A CN 104427375A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 102
- 230000006854 communication Effects 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 239000002131 composite material Substances 0.000 abstract 1
- VEMKTZHHVJILDY-UHFFFAOYSA-N resmethrin Chemical compound CC1(C)C(C=C(C)C)C1C(=O)OCC1=COC(CC=2C=CC=CC=2)=C1 VEMKTZHHVJILDY-UHFFFAOYSA-N 0.000 description 12
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- 230000015572 biosynthetic process Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2383—Channel coding or modulation of digital bit-stream, e.g. QPSK modulation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
- H04N21/4383—Accessing a communication channel
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- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
A video and audio transmission device is suitable for communicating with a plurality of digital televisions. The video and audio transmission device comprises a connection interface, a processing unit, a modulation unit and a transmission unit. The connection interface is used for connecting a multimedia device which outputs a multimedia signal. The processing unit is coupled to the connection interface for processing or computing the multimedia signal. The modulating unit is coupled to the processing unit and is used for modulating the multimedia signal corresponding to the digital televisions into a plurality of television signals. The transmission unit is coupled to the modulation unit for transmitting the television signals. Wherein, each digital television receives one of the corresponding television signals, one channel of each digital television plays one of the corresponding television signals, and a composite image is displayed on the digital televisions.
Description
Technical field
The present invention is a kind of audio and video transmitting set and system thereof, particularly about a kind of audio and video transmitting set connecting multimedia device, with transmission signal to the audio and video transmitting set of Digital Television and system thereof.
Background technology
Along with the progress of multimedia video science and technology, life and the multimedia video science and technology of people are closely bound up, wherein multimedia video science and technology is such as applied to teaching environment, monitors environment, concert, presentations, advertisement or video wall etc., therefore, at least one multimedia device and multiple video and audio output device is often configured in described multimedia video technological applications environment, wherein multimedia device is such as pen electricity, and video and audio output device is such as display screen and/or loudspeaker.
But, when staff sets up multimedia device and video and audio output device, staff often runs into following point, multimedia device and video and audio output device is laid the reasonable time in that staff being expended, such as, after multiple video and audio output device and multimedia device are positioned over pre-stroke position by staff, staff need reset the address of multiple video and audio output device and multiple multimedia device, address is such as dynamic network address, with the address of setting reasonable time the in that therefore staff must expending.
Moreover, after the address completing video and audio output device and multimedia device as staff sets, if staff will change the on-line state of video and audio output device and multimedia device, such as change the address of video and audio output device, then staff need reset described connection state, and therefore video and audio output device and multimedia device will expend again the online time.
Summary of the invention
The invention reside in and a kind of audio and video transmitting set and system thereof are provided, wherein audio and video transmitting set connects multimedia device, to receive multimedia signal, and audio and video transmitting set through modulating unit multimedia signal to be modulated to television signal, and be transferred to Digital Television, to make a reserved access channel of Digital Television export image and sound program, therefore promote efficiency and the convenience of audio/video transmission system.
The present invention proposes a kind of audio and video transmitting set, and be applicable to and the communication of multiple stage Digital Television, each Digital Television has a receiving unit, and audio and video transmitting set comprises a connecting interface, a processing unit, a modulating unit and a transmission unit.Connecting interface is in order to connect a multimedia device, and multimedia device is in order to provide a multimedia signal.Processing unit couples connecting interface, in order to process or computing multimedia signal.Modulating unit couples processing unit, and in order to by those Digital Television corresponding for multimedia signal, to be modulated to multiple television signal.Transmission unit couples modulating unit, in order to transmit those television signals.Wherein, modulating unit is according to the quantity of those Digital Television, multimedia signal to be modulated to multiple television signals of those Digital Television quantity corresponding, and one of them a receiving channels of each television signal those Digital Television corresponding, with make each Digital Television through receiving unit receive those corresponding television signals one of them time, it is multimedia signal that those Digital Television are combined to form a resultant image.
Wherein, this modulating unit respectively will load a transmission band by this television signal, to make this transmission unit, each this television signal be transferred to those Digital Television through those transmission bands.
Wherein, this transmission unit is a less radio-frequency assembly, in order to those television signals of wireless transmission.
Wherein, this transmission unit more comprises a wire transmission interface, couples this modulating unit, and in order to connect a transmission line, this transmission line is coupled between this wire transmission interface and those Digital Television, and transmits those television signals.
Wherein, those television signals meet the signal specification of a digitized video broadcast, a comprehensive digital serviced broadcast, an advanced digital television system committee, a digital number television ground multimedia broadcasting, an orthogonal amplitude modulating and changing and/or a China Mobile multimedia broadcasting Digital Television.
Wherein, this multimedia signal comprises a data flow and an encoding video-audio stream, and this data flow and this encoding video-audio flow through by this connecting interface to transfer to this processing unit and this modulating unit.
Wherein, respectively this Digital Television comprises a demodulating unit and a decoding unit, and respectively this demodulating unit receive those corresponding television signals one of them, and one of them is demodulated into this data flow and this encoding video-audio stream by those television signals of correspondence, after wherein this encoding video-audio flows through and operated by this decoding unit decoding, export an image and sound program to make those Digital Television.
The present invention proposes a kind of audio/video transmission system, comprises multiple stage Digital Television and an audio and video transmitting set.Each Digital Television has a receiving unit.Audio and video transmitting set comprises a connecting interface, a processing unit, a modulating unit and a transmission unit.Connecting interface is in order to connect a multimedia device, and multimedia device is in order to provide a multimedia signal.Processing unit couples connecting interface, in order to process or computing multimedia signal.Modulating unit couples processing unit, and in order to by those Digital Television corresponding for multimedia signal, to be modulated to multiple television signal.Transmission unit couples modulating unit, in order to transmit those television signals.Wherein, modulating unit is according to the quantity of those Digital Television, multimedia signal to be modulated to multiple television signals of those Digital Television quantity corresponding, and one of them a receiving channels of each television signal those Digital Television corresponding, with make each Digital Television through receiving unit receive those corresponding television signals one of them time, it is multimedia signal that those Digital Television are combined to form a resultant image.
Concrete means of the present invention are for utilizing audio/video transmission system, comprise multiple stage Digital Television is connected multimedia device audio and video transmitting set with one, and audio and video transmitting set through modulating unit multimedia signal to be modulated to multiple television signal, and be transferred to Digital Television, to make a reserved access channel of Digital Television export image and sound program, therefore promote efficiency and the convenience of audio/video transmission system.
Above general introduction and ensuing embodiment are all to further illustrate technological means of the present invention and reaching effect, but the embodiment that describes and graphicly only provide reference that use is described, be not used for being limited the present invention.
Accompanying drawing explanation
Fig. 1 is the audio/video transmission system functional block diagram of one embodiment of the invention.
Fig. 2 is the audio/video transmission system function block schematic diagram of another embodiment of the present invention.
Fig. 3 is the audio/video transmission system function block schematic diagram of another embodiment of the present invention.
Description of reference numerals
1,2,3: audio/video transmission system
9: multimedia device
10a, 10b, 10c, 10d, 10e, 10f, 10g, 10h: Digital Television
100a, 100b, 100c, 100d: antenna
102a, 102b, 102c, 102d: demodulating unit
104a, 104b, 104c, 104d: decoding unit
12,12a: audio and video transmitting set
120: connecting interface
122: processing unit
124: modulating unit
126,126a: transmission unit
1260: less radio-frequency assembly
1262: wire transmission interface
14: transmission line
Embodiment
Fig. 1 is the audio/video transmission system functional block diagram of one embodiment of the invention.Refer to Fig. 1.A kind of audio/video transmission system 1, comprises multiple stage Digital Television 10a, 10b, 10c, 10d and an audio and video transmitting set 12.In practice, audio/video transmission system 1 such as applies to the multi-screen display etc. of video wall, the multi-screen advertisement of hypermarket or public place, the multi-screen display of teaching environment, the multi-screen display of stock exchange, concert or presentations, and the present embodiment does not limit the utilization aspect of audio/video transmission system 1.
Specifically, each Digital Television 10a, 10b, 10c, 10d have a receiving unit, for convenience of description, the receiving unit of the present embodiment is antenna 100a, 100b, 100c, 100d, in other embodiments, receiving unit is such as cable interfaces (TV Cable Interface), and the present embodiment does not limit the aspect of receiving unit.
In practice, Digital Television 10a, 10b, 10c, 10d comprises a demodulating unit 102a, 102b, 102c, a 102d and decoding unit 104a, 104b, 104c, 104d, and demodulating unit 102a, 102b, 102c, 102d receives local Digital Television signal, and will by decoding unit 104a, 104b, 104c, 104d is by this local Digital Television signal decoding process, to make Digital Television 10a, 10b, 10c, 10d exports local TV programme, such as Taiwan radiovision industry uses with DVB-T standard as Digital Television 10a, 10b, 10c, the record and broadcast specification of 10d, to make Digital Television 10a, 10b, 10c, the TV programme of the exportable locality of partial channel of 10d, such as Digital Television 10a, 10b, 10c, the exportable Taiwan Television Enterprise, Ltd. of 10d, Chinese TV company, the program of TV and Radio Corporation of China or the record and broadcast of institute of whole people TV and Radio Corporation among the people.Certainly, Digital Television 10a, 10b, 10c, 10d still have partial channel to be reserved access channel, and reserved access channel to there is no programme content exportable.
For convenience of description, the present embodiment is with the channel of reserved access channel as audio and video transmitting set 12 transmitting audio-video programs, with the image and sound program making Digital Television 10a, 10b, 10c, 10d output audio and video transmitting set 12 transmits, in other embodiments, audio/video transmission system 1 also can use the television signal technology of lid platform, with the image and sound program making Digital Television 10a, 10b, 10c, 10d output audio and video transmitting set 12 transmits, the present embodiment does not limit the aspect that audio/video transmission system 1 operates.Another the present embodiment illustrates with four Digital Television 10a, 10b, 10c, 10d, in other embodiments, the quantity of Digital Television 10a, 10b, 10c, 10d can be two, three, five, eight or multiple stage, and the present embodiment does not limit the quantity of Digital Television 10a, 10b, 10c, 10d.
Audio and video transmitting set 12 comprises connecting interface 120, processing unit 122, modulating unit 124 and a transmission unit 126.In practice, processing unit 122 couples between connecting interface 120 and modulating unit 124, and modulating unit 124 couples transmission unit 126, therefore audio and video transmitting set 12 through connecting interface 120 to be connected to a multimedia device 9, therefore multimedia device 9 can pass through audio and video transmitting set 12, so that multimedia signal is wirelessly transmitted to Digital Television 10a, 10b, 10c, 10d.Another audio and video transmitting set 12 can be that volume is little and lightweight USB is excellent or other portable electronic devices, and the present embodiment does not limit the aspect of audio and video transmitting set 12.
Specifically, connecting interface 120 is in order to connect a multimedia device 9, and multimedia device 9 is such as desktop computer, flat computer, pen electricity, mobile communication device or personal digital assistant (Personal Digital Assistant, PDA) etc., and in order to provide a multimedia signal, the present embodiment does not limit the aspect of multimedia device 9.In practice, connecting interface 120 meets the interface specification of a transport stream (Transport Stream, TS), a USB and/or an Ethernet, and the present embodiment does not limit the aspect of connecting interface 120.
For example, connecting interface 120 is such as USB, therefore audio and video transmitting set 12 is through USB, with the USB port of connecting pen electricity, therefore user can operating pen electricity to play an image and sound program, and the sound of this image and sound program and image are by the multimedia signal of conversion MPEG2 or H.264 crossfire, and are sent to processing unit 122 via connecting interface 120 and carry out calculation process, the present embodiment does not limit the operation situation of connecting interface 120 and multimedia device 9.
Processing unit 122 couples connecting interface 120, in order to process or computing multimedia signal, and by the multimedia signal transmission after process or computing to modulating unit 124.In practice, processing unit 122 is such as central processing unit or microprocessor, and the present embodiment does not limit the aspect of processing unit 122.
Modulating unit 124 couples processing unit 122, and in order to by those Digital Television 10a corresponding for multimedia signal, 10b, 10c, 10d, to be modulated to multiple television signal.In practice, modulating unit 124 is such as digital communication modulation chip, and digital communication modulation chip can be used for the transmission of 1080P high definition digital video-audio crossfire information, and possess high bandwidth, long range propagation, the anti-interference characteristic with encrypting, the present embodiment does not limit the aspect of modulating unit 124.
Modulating unit 124 is according to those Digital Television 10a, 10b, 10c, the quantity of 10d, multimedia signal to be modulated to those Digital Television 10a corresponding, 10b, 10c, multiple television signals of 10d quantity, and each television signal those Digital Television 10a corresponding, 10b, 10c, one of them a receiving channels of 10d, to make each Digital Television 10a, 10b, 10c, 10d is through antenna 100a, 100b, 100c, 100d receive those corresponding television signals one of them time, those Digital Television 10a, 10b, 10c, it is multimedia signal that 10d is combined to form a resultant image.Each television signal is loaded a transmission band by another modulating unit 124, with make transmission unit 126 by each television signal through those transmission bands to transfer to those Digital Television 10a, 10b, 10c, 10d.Specifically, modulating unit 124 adopts Standard Digital Television modulation mode, to support global multiple main flow digital TV specification, therefore Digital Television 10a, 10b, 10c, 10d also have demodulating unit 102a, 102b, 102c, 102d using the reception modulator as standard, another modulating unit 124 can pass through exhibition mechanics of communication frequently, and television signal is transferred to those Digital Television 10a, 10b, 10c, 10d, therefore the multi-path interference in signal attenuation and communication process is reduced, so improve efficiency of transmission and communication quality.Multimedia signal can be modulated and be converted to multiple television signal by modulating unit 124, wherein those television signals meet a digitized video broadcast (Digital Video Broadcasting, DVB), one comprehensive digital serviced broadcast (Integrated Services Digital Broadcasting, ISDB), the one advanced digital television system committee (Advanced Television Systems Committee, ATSC), one digital TV ground multimedia broadcasting (Terrestrial Digital Multimedia TV/HandleBroadcasting, DTMB, DMB-TH), one orthogonal amplitude modulating and changing (Quadrature AmplitudeModulation, and/or a China Mobile multimedia broadcasting Digital Television (China MobileMultimedia Broadcasting QAM), CMMB) signal specification.
It is worth mentioning that, multimedia signal is modulated to multiple television signal via modulating unit 124, wherein a television signal will be sent to the 21 channel of corresponding Digital Television 10a, another television signal will be sent to the 25 channel of corresponding Digital Television 10b, another television signal will be sent to the 35 channel of corresponding Digital Television 10c, all the other television signals will be sent to the 5th channel, wherein the Digital Television 10a of corresponding Digital Television 10d, 10b, 10c, 21 channel of 10d, 25 channel, 35 channel and the 5th channel are reserved access channel, and in other embodiments, these television signals can be sent to these Digital Television 10a, 10b, 10c, same the channel of 10d, such as these television signals can be sent to these Digital Television 10a, 10b, 10c, 21 channel of 10d, the present embodiment does not limit multimedia signal and is modulated to multiple television signal via modulating unit 124, and these television signals are sent to Digital Television 10a, 10b, 10c, the running aspect of the reserved access channel of 10d.
In addition, modulating unit 124 can according to Digital Television 10a, 10b, 10c, the quantity of 10d, to modulate multiple television signal, the modulating unit 124 of such as the present embodiment modulates four television signals, wherein each television signal is the audio-visual partial picture of instruction one program, the television signal of the present embodiment is audio-visual 1/4th pictures of instruction one program, in other embodiments, Digital Television 10a, 10b, 10c, the quantity of 10d is such as eight, then modulating unit 124 modulates eight television signals, wherein each television signal is audio-visual 1/8th pictures of instruction one program, the present embodiment does not limit the aspect that modulating unit 124 modulates multiple television signal.
It should be noted that, modulating unit 124 can have a band table (not illustrating), band table (not illustrating) is in order to indicate the corresponding multiple stage Digital Television 10a of multiple television signal, 10b, 10c, the relation of 10d, such as modulating unit 124 can use 420MHz frequency range, so that the television signal of corresponding Digital Television 10a is transferred to Digital Television 10a through transmission unit 126, and modulating unit 124 can use 450MHz frequency range, so that the television signal of corresponding Digital Television 10b is transferred to Digital Television 10b through transmission unit 126, in like manner known, modulating unit 124 can use 460MHz and 480MHz frequency range, with by corresponding Digital Television 10c, the television signal of 10d transfers to Digital Television 10c respectively through transmission unit 126, 10d.
In other embodiments, band table (not illustrating) also can in order to indicate each Digital Television 10a, 10b, 10c, the relation of the corresponding multiple television signal of 10d, such as Digital Television 10a, 10b, 10c, 10d has 15 local the father-in-law and to start broadcasting the channel put, and band table (not illustrating) can be avoided described local the father-in-law and to start broadcasting the channel put, and by multiple television signal respectively with 420MHz, 450MHz, 460MHz and 480MHz frequency range carrys out modulation transmissions, wherein 420MHz, 450MHz, 460MHz and 480MHz frequency range is respectively each Digital Television 10a corresponding, 10b, 10c, 21 channel of 10d, 25 channel, 35 channel and the 5th channel, so user can by Digital Television 10a, 10b, 10c, 10d is switched to the 21 channel respectively, 25 channel, 35 channel and the 5th channel, be displayed on Digital Television 10a to make resultant image, 10b, 10c, 10d, certainly, when user can by Digital Television 10a, 10b, 10c, when 10d is switched to the 21 channel respectively, Digital Television 10a, 10b, 10c, 10d is by image frame identical for display.The present embodiment does not limit aspect and the operation situation of modulating unit 124 and band table.Transmission unit 126 couples modulating unit 124, in order to transmit those television signals.In practice, transmission unit 126 is such as less radio-frequency assembly 1260 and/or wire transmission interface 1262, and for convenience of description, the transmission unit 126 of the present embodiment illustrates with less radio-frequency assembly 1260, and the present embodiment does not limit the aspect of transmission unit 126.Such as less radio-frequency assembly 1260 is such as radio-frequency antenna 100a, 100b, 100c, 100d, and therefore those television signals are transmitted to Digital Television 10a, 10b, 10c, 10d through less radio-frequency assembly 1260.
When each Digital Television 10a, 10b, 10c, 10d through antenna 100a, 100b, 100c, 100d receive those corresponding television signals one of them, then each Digital Television 10a, 10b, 10c, 10d a receiving channels by play those corresponding television signals one of them, and a resultant image is displayed on those Digital Television 10a, 10b, 10c, 10d.
In practice, multimedia device 9 provides the multimedia signal with sound and image can become meet MPEG2 or H.264 form via encoding unit encodes, to be converted to the multimedia signal of crossfire, and the multimedia signal of crossfire is sent to processing unit 122 and modulating unit 124 via connecting interface 120, wherein the multimedia signal changing after code conversion is become ATSC by modulating unit 124, DVB-T, after the television signals such as ISDB-T or DMB-TH, and the radio-frequency (RF) signal converted to via transmission unit 126 on predetermined frequency band, then by radio-frequency antenna 100a, 100b, 100c, 100d launches, and Digital Television 10a, 10b, 10c, after 10d receives the television signal from audio and video transmitting set 12, the i.e. reducible television signal with sound and image, to export image and sound program.
For example, multimedia device 9 can provide at least one multimedia signal, and multimedia signal is such as cuisines program, I sports program, music program, the crossfire signal of news program or profile program, such as user operation pen electricity, to play one section of cuisines image and sound program, and transmission one is such as that the multimedia signal of Pizza is to audio and video transmitting set 12 by multimedia device 9, and this multimedia signal via modulating unit 124 to be modulated to four television signals, wherein each television signal is such as intermediate frequency (the intermediate frequency of instruction display 1/4th Pizza image, IF) signal, and these intermediate frequency signals will transfer to each Digital Television 10a, 10b, 10c, 10d, as each Digital Television 10a, 10b, 10c, 10d is through antenna 100a, 100b, 100c, when 100d receives corresponding television signal, then each Digital Television 10a, 10b, 10c, one receiving channels of 10d will play corresponding television signal, and the Pizza image of a therefore synthesis will be displayed on these Digital Television 10a, 10b, 10c, on 10d, as Fig. 1 illustrate.The present embodiment does not limit running and the aspect of audio/video transmission system 1.
Based on above-mentioned, audio and video transmitting set 12 and Digital Television 10a, 10b, 10c, need not through the setting of the address of complexity between 10d, therefore audio and video transmitting set 12 and Digital Television 10a, 10b, 10c, erection simple and easyly can be completed audio-visual with play multimedia between 10d, in other embodiments, audio/video transmission system 1 also can be used in video wall, the multi-screen advertisement of hypermarket or public place, the multi-screen display of teaching environment, the multi-screen display of stock exchange, the multi-screen display etc. of concert or presentations, the present embodiment does not limit the running aspect of audio/video transmission system 1.
Fig. 2 is the audio/video transmission system function block schematic diagram of another embodiment of the present invention.Refer to Fig. 2.The audio/video transmission system 2 of the present embodiment is similar to the audio/video transmission system 1 of previous embodiment, and below the same components included by the two is represented with identical label, for convenience of description, the present embodiment system exports same frame as resultant image using each Digital Television 10a, 10b, 10c, 10d, 10e, 10f, 10g, 10h, wherein audio/video transmission system 2 also can through modulating unit 124, to make multimedia signal be modulated to television signal, and transmission unit 126a can TV transmission signal to Digital Television 10a, 10b, 10c, 10d, 10e, 10f, 10g, 10h.
But, still difference is had between audio/video transmission system 2 and 1, it is: the transmission unit 126a of the present embodiment more comprises a wire transmission interface 1262, therefore the present invention can perform wireless and wired dual mode communication, and television signal can pass through wire transmission interface 1262 and a transmission line 14 and is transferred to Digital Television 10e, 10f, 10g, 10h, wherein wire transmission interface 1262 couples modulating unit 124, and transmission line 14 is such as coaxial cable, be coupled to wire transmission interface 1262 and Digital Television 10e, 10f, 10g, between 10h, the present embodiment does not limit the aspect of transmission unit 126a.
Specifically, multimedia signal comprises a data flow and an encoding video-audio stream, and data flow and encoding video-audio flow through by connecting interface 120 to transfer to processing unit 122 and modulating unit 124, wherein multimedia signal is such as the crossfire signal of cuisines program, I sports program, music program, news program or profile program, for convenience of description, the multimedia signal of the present embodiment is such as the crossfire signal of profile program illustrates.
Modulating unit 124 is according to these Digital Television 10a, 10b, 10c, 10d, 10e, 10f, 10g, the quantity of 10h, multimedia signal to be modulated to eight corresponding television signals, wherein each television signal is the image and sound program of assignor's thing special visit, and four Digital Television 10a, 10b, 10c, 10d and audio and video transmitting set 12a adopts radio communication, another four Digital Television 10e, 10f, 10g, 10h and audio and video transmitting set 12a adopts wire communication, and these television signals can pass through less radio-frequency assembly 1260 and wire transmission interface 1262, to be transferred to these Digital Television 10a, 10b, 10c, 10d, 10e, 10f, 10g, 10h, therefore these Digital Television 10a, 10b, 10c, 10d, 10e, 10f, 10g, 10h all can synchronously broadcast profile program.The audio/video transmission system 2 that the present embodiment does not limit operates and aspect.For example, four Digital Television 10a can be set in lecture hall, 10b, 10c, 10d, and another four Digital Television 10e can be set respectively in four classrooms of contiguous lecture hall, 10f, 10g, 10h, wherein audio and video transmitting set 12a is such as arranged in lecture hall, therefore, audio and video transmitting set 12a can near radio TV transmission signal to Digital Television 10a, 10b, 10c, 10d, and audio and video transmitting set 12a can at a distance wire transmission television signal to Digital Television 10e, 10f, 10g, 10h, therefore the personnel in lecture hall and between four of contiguous lecture hall in classroom all can watch the speech program of profile, wherein audio and video transmitting set 12a and these Digital Television 10a, 10b, 10c, 10d, 10e, 10f, 10g, need not through the setting of the address of complexity between 10h, therefore audio and video transmitting set 12a and these Digital Television 10a, 10b, 10c, 10d, 10e, 10f, 10g, erection simple and easyly can be completed audio-visual with play multimedia between 10h.
Except above-mentioned difference, art has knows that the knowledgeable is with reference to after above-described embodiment and above-mentioned difference, should know by inference easily, therefore not repeat them here usually.
Fig. 3 is the audio/video transmission system function block schematic diagram of another embodiment of the present invention.Refer to Fig. 3.The audio/video transmission system 3 of the present embodiment is similar to the audio/video transmission system 2 of previous embodiment, and below the same components included by the two is represented with identical label, for convenience of description, the present embodiment exports the picture of not identical image and sound program as resultant image using each Digital Television 10a, 10b, 10c, 10d, wherein audio/video transmission system 3 also can through modulating unit 124, to make multimedia signal be modulated to television signal, and transmission unit 126a can TV transmission signal to Digital Television 10a, 10b, 10c, 10d.
But still have difference between audio/video transmission system 3 and 2, it is: Digital Television 10a of the present invention, 10b, 10c, 10d can play different image and sound program simultaneously.Specifically, multimedia device 9 can provide multiple multimedia signal, these multimedia signals are such as respectively news program, vehicle advertisement, the crossfire signal of I sports program and landscape program, wherein modulating unit 124 is according to those Digital Television 10a, 10b, 10c, the quantity of 10d, these multimedia signals to be modulated to corresponding multiple television signals, such as by the 15 channel of corresponding for the crossfire signal of news program I sports program Digital Television 10a, 17 channel of the corresponding Digital Television 10b of crossfire signal of vehicle advertisement, 18 channel of the corresponding Digital Television 10c of crossfire signal of I sports program, 25 channel of the corresponding Digital Television 10d of crossfire signal of landscape program.
Therefore, these television signals are such as through the transmission unit 126a of less radio-frequency assembly 1260, to be wirelessly transmitted to these Digital Television 10a, 10b, 10c, 10d, and each Digital Television 10a, 10b, 10c, 10d is through antenna 100a, 100b, 100c, 100d receives corresponding television signal, wherein each Digital Television 10a, 10b, 10c, 10d is not via decoding unit (illustrating), news program is exported to make Digital Television 10a, and Digital Television 10b exports vehicle advertisement, Digital Television 10c exports I sports program and Digital Television 10d exports landscape program.Another the present invention also wireless or wired dual mode communication of changeable execution, therefore television signal can pass through less radio-frequency assembly 1260 or wire transmission interface 1262, to be transferred to these Digital Television 10a, 10b, 10c, 10d.The audio/video transmission system 3 that the present embodiment does not limit operates and aspect.
Except above-mentioned difference, art has knows that the knowledgeable is with reference to after above-described embodiment and above-mentioned difference, should know by inference easily, therefore not repeat them here usually.
In sum, the present invention is a kind of audio/video transmission system, comprise multiple stage Digital Television and an audio and video transmitting set, and audio and video transmitting set connects multimedia device through connecting interface, and through modulating unit so that multimedia signal is modulated to a plurality of television signal, and be transferred to Digital Television, to make a reserved access channel of Digital Television export image and sound program, therefore being formed is such as the multi-screen display etc. of the multi-screen display of the multi-screen display of the multi-screen advertisement of video wall, hypermarket or public place, teaching environment, stock exchange, concert or presentations.Thus, the convenience of audio/video transmission system lifting operation of the present invention.
The foregoing is only embodiments of the invention, it is also not used to limit to the scope of the claims of the present invention.
Claims (8)
1. an audio and video transmitting set, be applicable to and the communication of multiple stage Digital Television, respectively this Digital Television has a receiving unit, it is characterized in that, this audio and video transmitting set comprises:
One connecting interface, in order to connect a multimedia device, this multimedia device is in order to provide a multimedia signal;
One processing unit, couples this connecting interface, in order to process or computing this multimedia signal;
One modulating unit, couples this processing unit, and in order to by those Digital Television corresponding for this multimedia signal, to be modulated to multiple television signal; And
One transmission unit, couples this modulating unit, in order to transmit those television signals;
Wherein, this modulating unit is according to the quantity of those Digital Television, this multimedia signal to be modulated to multiple television signals of those Digital Television quantity corresponding, and each one of them a receiving channels of this television signal those Digital Television corresponding, with make each this Digital Television through this receiving unit receive those corresponding television signals one of them time, it is this multimedia signal that those Digital Television are combined to form a resultant image.
2. audio and video transmitting set according to claim 1, is characterized in that, this modulating unit respectively will load a transmission band by this television signal, to make this transmission unit, each this television signal is transferred to those Digital Television through those transmission bands.
3. audio and video transmitting set according to claim 1, is characterized in that, this transmission unit is a less radio-frequency assembly, in order to those television signals of wireless transmission.
4. audio and video transmitting set according to claim 3, is characterized in that, this transmission unit more comprises a wire transmission interface, couple this modulating unit, in order to connect a transmission line, this transmission line is coupled between this wire transmission interface and those Digital Television, and transmits those television signals.
5. audio and video transmitting set according to claim 1, it is characterized in that, those television signals meet the signal specification of a digitized video broadcast, a comprehensive digital serviced broadcast, an advanced digital television system committee, a digital number television ground multimedia broadcasting, an orthogonal amplitude modulating and changing and/or a China Mobile multimedia broadcasting Digital Television.
6. audio and video transmitting set according to claim 1, is characterized in that, this multimedia signal comprises a data flow and an encoding video-audio stream, and this data flow and this encoding video-audio flow through by this connecting interface to transfer to this processing unit and this modulating unit.
7. audio and video transmitting set according to claim 6, it is characterized in that, respectively this Digital Television comprises a demodulating unit and a decoding unit, and respectively this demodulating unit receive those corresponding television signals one of them, and one of them is demodulated into this data flow and this encoding video-audio stream by those television signals of correspondence, after wherein this encoding video-audio flows through and operated by this decoding unit decoding, export an image and sound program to make those Digital Television.
8. an audio/video transmission system, is characterized in that, comprising:
Multiple stage Digital Television, respectively this Digital Television has a receiving unit; And
One audio and video transmitting set, comprising:
One connecting interface, in order to connect a multimedia device, this multimedia device is in order to provide a multimedia signal;
One processing unit, couples this connecting interface, in order to process or computing this multimedia signal;
One modulating unit, couples this processing unit, and in order to by those Digital Television corresponding for this multimedia signal, to be modulated to multiple television signal; And
One transmission unit, couples this modulating unit, in order to transmit those television signals;
Wherein, this modulating unit is according to the quantity of those Digital Television, this multimedia signal to be modulated to multiple television signals of those Digital Television quantity corresponding, and each one of them a receiving channels of this television signal those Digital Television corresponding, with make each this Digital Television through this receiving unit receive those corresponding television signals one of them time, it is this multimedia signal that those Digital Television are combined to form a resultant image.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW102131534A TWI542221B (en) | 2013-09-02 | 2013-09-02 | Video transmission device and system thereof |
| TW102131534 | 2013-09-02 |
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| CN104427375A true CN104427375A (en) | 2015-03-18 |
| CN104427375B CN104427375B (en) | 2017-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310412310.XA Active CN104427375B (en) | 2013-09-02 | 2013-09-11 | video and audio transmission device and system thereof |
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| Country | Link |
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| CN (1) | CN104427375B (en) |
| TW (1) | TWI542221B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110312096A (en) * | 2018-03-20 | 2019-10-08 | 瞻诚科技股份有限公司 | Multimedia signal processing apparatus |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101136191A (en) * | 2007-01-04 | 2008-03-05 | 广东响石数码科技有限公司 | High distinguishability split joint television set curtain wall and consist method thereof |
| CN101751905A (en) * | 2009-12-28 | 2010-06-23 | 广东威创视讯科技股份有限公司 | Spliced wall data display processing method and system thereof |
| CN201585132U (en) * | 2009-07-07 | 2010-09-15 | 北京创毅视讯科技有限公司 | Multimedia advertisement issuing system and terminal equipment |
| US8109485B2 (en) * | 2007-05-14 | 2012-02-07 | Texas Instruments Incorporated | Tilting television wall mount |
| CN202587237U (en) * | 2011-03-10 | 2012-12-05 | 联阳半导体股份有限公司 | Digital wireless transmission device and system thereof |
| CN103021377A (en) * | 2012-12-21 | 2013-04-03 | 北京牡丹视源电子有限责任公司 | Ultrahigh-definition multi-screen image processing system |
-
2013
- 2013-09-02 TW TW102131534A patent/TWI542221B/en active
- 2013-09-11 CN CN201310412310.XA patent/CN104427375B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101136191A (en) * | 2007-01-04 | 2008-03-05 | 广东响石数码科技有限公司 | High distinguishability split joint television set curtain wall and consist method thereof |
| US8109485B2 (en) * | 2007-05-14 | 2012-02-07 | Texas Instruments Incorporated | Tilting television wall mount |
| CN201585132U (en) * | 2009-07-07 | 2010-09-15 | 北京创毅视讯科技有限公司 | Multimedia advertisement issuing system and terminal equipment |
| CN101751905A (en) * | 2009-12-28 | 2010-06-23 | 广东威创视讯科技股份有限公司 | Spliced wall data display processing method and system thereof |
| CN202587237U (en) * | 2011-03-10 | 2012-12-05 | 联阳半导体股份有限公司 | Digital wireless transmission device and system thereof |
| CN103021377A (en) * | 2012-12-21 | 2013-04-03 | 北京牡丹视源电子有限责任公司 | Ultrahigh-definition multi-screen image processing system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110312096A (en) * | 2018-03-20 | 2019-10-08 | 瞻诚科技股份有限公司 | Multimedia signal processing apparatus |
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| Publication number | Publication date |
|---|---|
| TWI542221B (en) | 2016-07-11 |
| TW201511567A (en) | 2015-03-16 |
| CN104427375B (en) | 2017-09-19 |
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