CN104581329A - Method and device for transmitting and receiving image-text broadcasting instruction - Google Patents
Method and device for transmitting and receiving image-text broadcasting instruction Download PDFInfo
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- CN104581329A CN104581329A CN201410844191.XA CN201410844191A CN104581329A CN 104581329 A CN104581329 A CN 104581329A CN 201410844191 A CN201410844191 A CN 201410844191A CN 104581329 A CN104581329 A CN 104581329A
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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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
- H04N21/42204—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor
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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
- H04N21/47—End-user applications
- H04N21/488—Data services, e.g. news ticker
- H04N21/4884—Data services, e.g. news ticker for displaying subtitles
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- Human Computer Interaction (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention relates to the technical field of making and broadcasting broadcasts and television programs, in particular to a method and device for transmitting and receiving an image-text broadcasting instruction, and is used for solving the problem that image-text information and a picture content of a program are not matched when the program is broadcasted in the prior art. The method for transmitting the image-text broadcasting instruction comprises the following steps: after an image-text control command to be transmitted is determined by an image-text broadcasting controller, determining a sound channel corresponding to the instruction, and memorizing the instruction; then according to memory addresses of all the sound channels corresponding to the program content, transmitting SDI (serial digital interface) embedded voice data of which the inner memory contains instructions to an automatic image-text broadcasting system through a first video input and output card. For the technical scheme, the image-text broadcasting instruction in an SDI (serial digital interface) embedded voice sound channel and video data and voice data of the program content controlled by the image-text broadcasting instruction can be transmitted together through the first video input and output card, so that the image-text broadcasting instruction and the video data and the voice data of the program content controlled by the image-text broadcasting instruction can reach the image-text broadcasting system at the same time.
Description
Technical field
The present invention relates to broadcast TV program and make broadcast technical field, particularly a kind of method and apparatus sending and receive picture and text broadcast instruction.
Background technology
At present, in broadcasting and TV field, picture and text broadcast controller is all send picture and text by network to picture and text automatic broadcast system to broadcast instruction, control programme content broadcast, but because picture and text broadcast controller is the video/audio being sent programme content by video input output card to picture and text automatic broadcast system in prior art, therefore likely there will be picture and text and broadcast instruction arrives picture and text automatic broadcast system situation prior to the video/audio of programme content, picture and text broadcast system is caused to broadcast instruction with regard to executed picture and text before the video/audio of programme content arrives, thus reduce the precision that programme content broadcasts effect, picture and text broadcast system is caused to occur when broadcasting graph text information broadcasting with program pictures content not mating, broadcast not in place, broadcast leakage, the situation such as to broadcast by mistake.
In addition, during when network disconnection or without network, the mode that just can only manually operate controls the broadcast of programme content, make picture and text broadcast effect and do not reach the accurate of frame precision, also easily cause programme content broadcast system to occur not in place, the broadcast leakage of broadcast when broadcast items content, the situation such as to broadcast by mistake.
In sum, easily occur that graph text information does not mate with program pictures content when broadcast items content at present, graph text information is prior to or subsequent to program pictures content and broadcasts, or broadcast leakage, the situation such as to broadcast by mistake, frame levels of precision can not accomplish that graph text information and program pictures content carry out the broadcast of perfect matching.
Summary of the invention
Embodiments provide and a kind ofly send and receive picture and text and broadcast the method and apparatus of instruction, in order to solve exist in prior art easily there is graph text information and the unmatched problem of program pictures content when broadcast items content.
Embodiments provide a kind of method sending picture and text broadcast instruction, comprising:
Picture and text broadcast controller after defining the picture and text control command that will transmit, determine that described picture and text broadcast sound channel corresponding to instruction, it is described picture and text control command for the sound in the programme content that controls that wherein said picture and text broadcast sound channel corresponding to instruction, at least one sound channel in unappropriated SDI (Serial Digital Interface, digital serial interface) embedded audio sound channel;
Described picture and text broadcast controller broadcasts sound channel corresponding to instruction memory address according to described picture and text, store described picture and text and broadcast instruction;
Described picture and text broadcast the memory address of controller according to all sound channels corresponding to programme content, broadcast the first video input output card in controller by described picture and text, send in internal memory to described picture and text automatic broadcast system and comprise the SDI embedded audio data that described picture and text broadcast instruction.
Because picture and text broadcast controller can obtain corresponding SDI embedded audio sound channel memory address by video input output card, store picture and text and broadcast instruction, thus SDI embedded audio sound channel picture and text broadcast instruction can be transmitted with the video/audio of the programme content of its control together with the first video input output card, therefore the video/audio making picture and text broadcast the programme content of instruction and its control can arrive picture and text broadcast system simultaneously, thus solve in prior art and transmitted by different modes from the video/audio of programme content because picture and text broadcast instruction and cause existing time delay, make easily to occur graph text information and the unmatched problem of program pictures content when broadcast items content.
Preferably, described picture and text broadcast controller before determining the appointment sound channel of the SDI embedded audio transmitting picture and text broadcast instruction, also comprises after defining the picture and text control command that will transmit:
Described picture and text controller determines disconnection connected to the network.
Preferably, described picture and text broadcast controller and determine that described picture and text broadcast sound channel corresponding to instruction, comprising:
Described picture and text broadcast controller and broadcast controller to the audio sampling frequency of described programme content according to the size of described picture and text broadcast instruction and described picture and text, determine that picture and text broadcast sound channel corresponding to instruction.
Because size and described picture and text by broadcasting instruction according to described picture and text broadcast controller to the audio sampling frequency of described programme content, determine that picture and text broadcast sound channel corresponding to instruction, thus improve the efficiency of picture and text broadcast command and improve the utilance of specifying channel data transmission.
Embodiments provide a kind of method receiving picture and text broadcast instruction, comprising:
The SDI embedded audio data received by the second video input output card, according to the second memory address of all sound channels corresponding to programme content, are stored in internal memory by picture and text automatic broadcast system;
Described picture and text automatic broadcast system determination picture and text broadcast sound channel corresponding to instruction, it is described picture and text control command for the sound in the programme content that controls that wherein said picture and text broadcast sound channel corresponding to instruction, at least one sound channel in unappropriated digital serial interface SDI embedded audio sound channel;
Described picture and text automatic broadcast system broadcasts the second memory address of sound channel corresponding to instruction according to the described picture and text determined, extracts the data that picture and text broadcast instruction from internal memory;
Described picture and text automatic broadcast system broadcasts the data sequence of instruction according to the described picture and text extracted, and the data that described picture and text broadcast instruction is combined, and obtains described picture and text and broadcasts instruction.
Because picture and text automatic broadcast system can receive by the second video input output card the video/audio that SDI embedded audio sound channel picture and text broadcast the programme content of instruction and its control simultaneously, and sound channel corresponding to instruction can be broadcasted according to picture and text and distinguish the data that picture and text broadcast instruction and corresponding SDI embedded audio, thus solve in prior art and transmitted by different modes from the video/audio of programme content because picture and text broadcast instruction and cause existing time delay, make easily to occur graph text information and the unmatched problem of program pictures content when broadcast items content.
Preferably, the data that described picture and text broadcast instruction combine by the data sequence extracting picture and text broadcast instruction by described picture and text automatic broadcast system, after obtaining described picture and text broadcast instruction, also comprise:
Described picture and text automatic broadcast system, according to the opening flag position in described picture and text broadcast instruction and end mark position, judges that the described picture and text received broadcast the integrality of instruction;
Described picture and text automatic broadcast system is after the described picture and text broadcast instruction determining to receive is complete, the form broadcasting instruction according to described picture and text broadcasts instruction to described picture and text and resolves, obtain control command, and according to the control command obtained, programme content is operated.
Embodiments provide a kind of picture and text sending picture and text broadcast instruction and broadcast controller, comprising:
First determination module, for after defining the picture and text control command that will transmit, determine that described picture and text broadcast sound channel corresponding to instruction, it is described picture and text control command for the sound in the programme content that controls that wherein said picture and text broadcast sound channel corresponding to instruction, at least one sound channel in unappropriated digital serial interface SDI embedded audio sound channel;
First memory module, for broadcasting the memory address of sound channel corresponding to instruction according to described picture and text, stores described picture and text and broadcasts instruction;
Sending module, for the memory address according to all sound channels corresponding to programme content, broadcast the first video input output card in controller by described picture and text, send in internal memory to described picture and text automatic broadcast system and comprise the SDI embedded audio data that described picture and text broadcast instruction.
Preferably, described first determination module also for:
Define the picture and text control command that will transmit, and after determining disconnection connected to the network, determine transmitting the appointment sound channel that picture and text broadcast the SDI embedded audio of instruction.
Preferably, described first determination module, specifically for:
Broadcast the size of instruction according to described picture and text and described picture and text broadcast controller to the sample frequency of described programme content, determine that described picture and text broadcast sound channel corresponding to instruction.
Embodiments provide a kind of picture and text automatic broadcast system receiving picture and text broadcast instruction, comprising:
The SDI embedded audio data received by the second video input output card, for the second memory address according to all sound channels corresponding to programme content, are stored in internal memory by the second memory module;
Second determination module, for determining that picture and text broadcast sound channel corresponding to instruction, it is described picture and text control command for the sound in the programme content that controls that wherein said picture and text broadcast sound channel corresponding to instruction, at least one sound channel in unappropriated digital serial interface SDI embedded audio sound channel;
Extraction module, for broadcasting the second memory address of sound channel corresponding to instruction according to the described picture and text determined, extracts the data that picture and text broadcast instruction from internal memory;
The data that described picture and text broadcast instruction for broadcasting the data sequence of instruction according to the described picture and text extracted, are combined, obtain described picture and text and broadcast instruction by instruction module.
Preferably, described instruction module also for: broadcast after instruction obtaining described picture and text, broadcast opening flag position in instruction and end mark position according to described picture and text, judge that the described picture and text received broadcast the integrality of instruction; After the described picture and text broadcast instruction determining to receive is complete, the form broadcasting instruction according to described picture and text broadcasts instruction to described picture and text and resolves, and obtains control command, and operates programme content according to the control command obtained.
Accompanying drawing explanation
Fig. 1 is the method flow schematic diagram that the embodiment of the present invention one sends that picture and text broadcast instruction;
Fig. 2 is that picture and text broadcast controller and picture and text automatic broadcast system connection diagram;
Fig. 3 is the method flow schematic diagram that the embodiment of the present invention two receives that picture and text broadcast instruction;
Fig. 4 is the method flow schematic diagram that the embodiment of the present invention three transmits that picture and text broadcast instruction;
Fig. 5 is the picture and text broadcast controller schematic diagram that the embodiment of the present invention four sends that picture and text broadcast instruction;
Fig. 6 is the picture and text automatic broadcast system schematic diagram that the embodiment of the present invention five receives that picture and text broadcast instruction.
Embodiment
The picture and text of the embodiment of the present invention broadcast controller after defining the picture and text control command that will transmit, determine that picture and text broadcast sound channel corresponding to instruction, wherein picture and text broadcast sound channel corresponding to instruction is picture and text control command for the sound in the programme content that controls, at least one sound channel in unappropriated digital serial interface SDI embedded audio sound channel; And the memory address of sound channel corresponding to instruction is broadcasted according to picture and text, store picture and text and broadcast instruction; Then according to the memory address of all sound channels corresponding to programme content, broadcast the first video input output card in controller by picture and text, send in internal memory to picture and text automatic broadcast system and comprise the SDI embedded audio data that picture and text broadcast instruction.This technical scheme due to picture and text broadcast controller can according to the memory address of corresponding SDI embedded audio sound channel, store picture and text and broadcast instruction, thus SDI embedded audio sound channel picture and text broadcast instruction can be transmitted with the video/audio of the programme content of its control together with the first video input output card, therefore the video/audio making picture and text broadcast the programme content of instruction and its control can arrive picture and text broadcast system simultaneously, thus solve in prior art and transmitted by different modes from the video/audio of programme content because picture and text broadcast instruction and cause existing time delay, make easily to occur graph text information and the unmatched problem of program pictures content when broadcast items content.
The SDI embedded audio data received by the second video input output card, according to the second memory address of all sound channels corresponding to programme content, are stored in internal memory by the picture and text automatic broadcast system of embodiments of the invention; And determine that picture and text broadcast sound channel corresponding to instruction, wherein picture and text broadcast sound channel corresponding to instruction is picture and text control command for the sound in the programme content that controls, at least one sound channel in unappropriated digital serial interface SDI embedded audio sound channel; Then broadcast the second memory address of sound channel corresponding to instruction according to the picture and text determined, from internal memory, extract the data that picture and text broadcast instruction; Finally broadcast the data sequence of instruction according to the picture and text extracted, data picture and text being broadcasted instruction combine, and obtain picture and text and broadcast instruction.This technical scheme can receive by the second video input output card the video/audio that SDI embedded audio sound channel picture and text broadcast the programme content of instruction and its control due to picture and text automatic broadcast system simultaneously, and sound channel corresponding to instruction can be broadcasted according to picture and text and distinguish the data that picture and text broadcast instruction and corresponding SDI embedded audio, thus solve in prior art and transmitted by different modes from the video/audio of programme content because picture and text broadcast instruction and cause existing time delay, make easily to occur graph text information and the unmatched problem of program pictures content when broadcast items content.
Below in conjunction with Figure of description, the embodiment of the present invention is described in further detail.
As shown in Figure 1, the embodiment of the present invention one sends the method that picture and text broadcast instruction, comprising:
Step 100, picture and text broadcast controller after defining the picture and text control command that will transmit, determine that picture and text broadcast sound channel corresponding to instruction, wherein picture and text broadcast sound channel corresponding to instruction is picture and text control command for the sound in the programme content that controls, at least one sound channel in unappropriated digital serial interface SDI embedded audio sound channel.
Step 101, picture and text broadcast controller broadcasts sound channel corresponding to instruction memory address according to picture and text, store picture and text and broadcast instruction.
Step 102, picture and text broadcast the memory address of controller according to all sound channels corresponding to programme content, broadcast the first video input output card in controller by picture and text, send in internal memory to picture and text automatic broadcast system and comprise the SDI embedded audio data that picture and text broadcast instruction.
Wherein, as shown in Figure 2, for picture and text broadcast the schematic diagram that is connected by SDI video line with picture and text automatic broadcast system of controller.
By transmission path as shown in Figure 2, picture and text are broadcasted instruction and be sent to picture and text automatic broadcast system, that is, picture and text are broadcasted instruction and are sent to the picture and text automatic broadcast system connected by SDI video line by the first video input output card, and picture and text automatic broadcast system just can receive picture and text and broadcast the picture and text broadcast instruction that controller sends.
These picture and text broadcast instruction can broadcast other instructions such as instruction, picture and text halt instruction, picture and text recursion instruction or picture and text pause instruction for picture and text, its form is [packet header] [device id] [control command] [data bit] [CRC check position] [bag tail], wherein CRC (Cyclic Redundancy Check, CRC) check digit also can be positioned at after bag tail.
Packet header is the mark that instruction starts, such as [Head]; Device id is the ID (Identity, identify label number) of controlled picture and text automatic broadcast system, as ID (1,2,3); Control command can broadcast instruction (0x01), picture and text halt instruction (0x02), picture and text recursion instruction (0x03), picture and text pause instruction (0x04) etc. for picture and text, wherein 0x01,0x02,0x03,0x04 are the code of instruction, also can for other can other codes of presentation directives, and 0x01,0x02,0x03,0x04 also can represent the one in other instructions, as long as the instruction that a coded representation is unique; The content of data bit comprises the ID (1,2,3 of picture and text entry ...), broadcast the time started, broadcast duration (frame); Bag tail is the mark of order fulfillment, as [Tail]; CRC (Cyclic Redundancy Check, cyclic redundancy check (CRC) code) is a kind of error check code the most frequently used in data communication, it is characterized in that the length of information field and check field can be selected arbitrarily.Cyclical Redundancy Check is a kind of transfer of data error detection function, carries out polynomial computation to data, and is attached to after frame by the result obtained, the algorithm that the trip of receiving equipment leaf is similar, to ensure correctness and the integrality of transfer of data.
That is, picture and text broadcast instruction without the need to transmitting under the environment of network in this scenario, and therefore, the program both can use when there being network, also can using without during network.
When without Web vector graphic, preferably, after picture and text broadcast controller defines the picture and text control command that will transmit, before determining the appointment sound channel of the SDI embedded audio transmitting picture and text broadcast instruction, also comprise:
Picture and text controller determines disconnection connected to the network.
It should be noted that, when picture and text broadcast controller detects that network connects normal, by network interface card, picture and text can be broadcasted instruction and send to picture and text automatic broadcast system.
In addition, it should be noted that, in step 100, picture and text broadcast controller and determine corresponding sound channel, will determine which sound channel does not also have SDI embedded audio transfer of data on the one hand, will determine the number of the sound channel needing to use on the one hand.
Wherein, by passing through high definition standard HD-SDI (High DefinitionSerial Digital Interface in transmission path as shown in Figure 2, high-definition serial digital interface) embedded audio can embed the transmission of 16 tunnel sound channels as voice data, at present, front 8 tunnel sound channels can be used at most, wherein 1, 2 sound channels are as stereo transmission, 3 ~ 8 sound channels are as the audio transmission of 5.1 sound channels, rear 8 tunnel sound channels do not have audio data transmission, therefore can be used for transmitting picture and text and broadcast instruction, when a certain road or several roads sound channel there is no in current 8 tunnel sound channels SDI embedded audio transfer of data, also may be used for transmission picture and text and broadcast instruction.
Preferably, picture and text broadcast controller determination picture and text and broadcast sound channel corresponding to instruction, comprising:
Described picture and text broadcast controller and broadcast controller to the audio sampling frequency of described programme content according to the size of described picture and text broadcast instruction and described picture and text, determine that described picture and text broadcast sound channel corresponding to instruction.
Specifically, under normal circumstances, picture and text broadcast controller to the sample frequency 48000Hz of described programme content, can set according to actual needs.
Broadcast the sample frequency 48000Hz of controller to described programme content for picture and text to be described, under pal mode, video and audio transmission frequency is 25 frames per second, namely every 40 milliseconds send once, therefore picture and text broadcast instruction is also every 40 milliseconds of transmission primarieses, computing formula according to amount of audio data: data volume (byte per second)=(sample frequency (Hz) × sampling resolution (bit) × channel number)/8, so the data volume of a frame audio frequency is: data volume (byte/frame)=(sample frequency (Hz) × sampling resolution (bit) × channel number)/8/25, be 16bit because picture and text broadcast controller to the sample frequency 48000Hz of described programme content, sampling resolution, so the data volume of a frame SDI embedded audio is 48000 × 16 × 16/8/25=61440 (byte/frame), the data transfer size of dual track one frame is generally 48000 × 16 × 2/8/25=7680 (byte/frame), and these data volumes can meet to broadcast to picture and text the demand controlled completely, and control precision is frame precision.
According to above-mentioned calculating, the size of the data volume of a sound channel one frame transmission is 3840 bytes, therefore when the data volume that picture and text broadcast instruction is not more than 3840 byte, a sound channel such as sound channel (9) can be specified to broadcast instruction for transmitting picture and text, two sound channels such as sound channel (13-14) can be specified to broadcast instruction for transmitting picture and text when picture and text broadcast instruction is between 3840 bytes and 7680 bytes, also channel transfer picture and text can be specified to broadcast instruction, transmit two frames, but under normal circumstances, picture and text broadcast instruction and preferably can transmit within a frame, be not divided into two frames to transmit as far as possible, but when picture and text broadcast the data volume of instruction be greater than for transmit picture and text broadcast maximum transmission data amount corresponding to director data sound channel time, picture and text being broadcasted instruction can be divided into two frames to transmit, user can set the size that the situation that takies of sound channel and picture and text broadcast instruction accordingly according to SDI embedded audio.
Instruction is broadcasted for DWORD (Double WORD below with picture and text, double word) situation of data type is that example is described, when picture and text broadcast instruction is made up of 8 DWORD data, each DWORD represents one group of voice-grade channel, wherein DWORD Organization of Data example is: DWORD [sound channel (1-2)], DWORD [sound channel (3-4)] ... DWORD [sound channel (13-14)], DWORD [sound channel (15-16)], so must control command be split in the sound channel of specifying, example is transmitted as with dual track control command, its fractionation mode is: memory address+command index/2 of sound channel (1-2), be the initial address selecting certain dual track as transmission control command, under pal mode, the audio sample number of every two field picture is 1920, therefore need by 1920 circulations, each circulation carries out assignment control command with the division of DWORD form, after each assignment, initial address all adds 8, form new initial address, enter and circulate next time, until circulation terminates.
As shown in Figure 3, the embodiment of the present invention two receives the method that picture and text broadcast instruction, comprising:
Step 300, the SDI embedded audio data received by the second video input output card, according to the second memory address of all sound channels corresponding to programme content, are stored in internal memory by picture and text automatic broadcast system.
Step 301, picture and text automatic broadcast system determination picture and text broadcast sound channel corresponding to instruction, wherein picture and text broadcast sound channel corresponding to instruction is picture and text control command for the sound in the programme content that controls, at least one sound channel in unappropriated digital serial interface SDI embedded audio sound channel.
Step 302, picture and text automatic broadcast system broadcasts the second memory address of sound channel corresponding to instruction according to the picture and text determined, extracts the data that picture and text broadcast instruction from internal memory.
Step 303, picture and text automatic broadcast system broadcasts the data sequence of instruction according to the picture and text extracted, and data picture and text being broadcasted instruction combine, and obtains picture and text and broadcasts instruction.
That is, picture and text automatic broadcast system receives SDI embedded audio data by the second video input output card, due to the data received after the receipt be stored in corresponding internal memory time, the relative position of its data does not change, therefore the second memory address of sound channel corresponding to instruction can be broadcasted according to the picture and text determined, from internal memory, extract the data that picture and text broadcast instruction, and reconfigure, obtain picture and text and broadcast instruction.
Preferably, the data that described picture and text broadcast instruction combine by the data sequence extracting picture and text broadcast instruction by described picture and text automatic broadcast system, after obtaining described picture and text broadcast instruction, also comprise:
Described picture and text automatic broadcast system, according to the opening flag position in described picture and text broadcast instruction and end mark position, judges that the described picture and text received broadcast the integrality of instruction;
Described picture and text automatic broadcast system is after the described picture and text broadcast instruction determining to receive is complete, the form broadcasting instruction according to described picture and text broadcasts instruction to described picture and text and resolves, obtain control command, and according to the control command obtained, programme content is operated.
Under normal circumstances, the opening flag position that picture and text broadcast instruction is packet header, such as [Head], end mark position is exactly bag tail, such as [Tail], monitor after opening flag position and picture and text broadcast the end mark position of instruction at picture and text automatic broadcast system, illustrates and receive a complete picture and text broadcast instruction.
When picture and text broadcast the form of instruction be CRC check position after bag tail time, because the figure place of CRC check position is determined, therefore at picture and text automatic broadcast system when monitoring the end mark position of instruction, adding the figure place determined backward, namely obtaining complete picture and text and broadcast instruction.
After picture and text automatic broadcast system receives complete picture and text broadcast instruction, the composition form broadcasting instruction according to picture and text broadcasts instruction to these picture and text and resolves, obtain control command, and the control command obtained is mapped in picture and text broadcasting list, realize automatically operating accordingly graph text information i.e. programme content.
As shown in Figure 4, the embodiment of the present invention three transmits the method that picture and text broadcast instruction, comprising:
Step 400, picture and text broadcast controller after defining the picture and text control command that will transmit, and determine that picture and text broadcast sound channel corresponding to instruction.
Wherein, it is picture and text control command for the sound in the programme content that controls that picture and text broadcast sound channel corresponding to instruction, at least one sound channel in unappropriated digital serial interface SDI embedded audio sound channel.
Step 401, picture and text broadcast controller broadcasts sound channel corresponding to instruction memory address according to picture and text, store picture and text and broadcast instruction.
Step 402, picture and text broadcast the memory address of controller according to all sound channels corresponding to programme content, broadcast the first video input output card in controller by picture and text, send in internal memory to picture and text automatic broadcast system and comprise the SDI embedded audio data that picture and text broadcast instruction.
Step 403, the SDI embedded audio data received by the second video input output card, according to the second memory address of all sound channels corresponding to programme content, are stored in internal memory by picture and text automatic broadcast system.
Step 404, picture and text automatic broadcast system determination picture and text broadcast sound channel corresponding to instruction, and detect in the internal memory of corresponding SDI embedded audio sound channel whether have data, if having, then perform step 405, otherwise perform step 406.
Step 405, the picture and text that picture and text automatic broadcast system extracts from internal memory broadcast the data of instruction, and broadcast the data sequence of instruction according to the picture and text extracted, and data picture and text being broadcasted instruction combine, and obtain picture and text and broadcast instruction, this flow process terminates.
Step 406, picture and text automatic broadcast system obtains do-nothing instruction, and this flow process terminates.
Based on same inventive concept, additionally provide a kind of picture and text sending picture and text broadcast instruction in the embodiment of the present invention and broadcast controller, the picture and text sending picture and text broadcast instruction because the embodiment of the present invention is a kind of broadcast the method that method corresponding to controller is transmission picture and text broadcast instruction, therefore the enforcement of embodiment of the present invention device see the enforcement of method, can repeat part and repeats no more.
As shown in Figure 5, the embodiment of the present invention four sends the picture and text broadcast controller that picture and text broadcast instruction, comprising:
First determination module 500, for after defining the picture and text control command that will transmit, determine that picture and text broadcast sound channel corresponding to instruction, wherein picture and text broadcast sound channel corresponding to instruction is picture and text control command for the sound in the programme content that controls, at least one sound channel in unappropriated digital serial interface SDI embedded audio sound channel;
First memory module 501, for broadcasting the memory address of sound channel corresponding to instruction according to picture and text, stores picture and text and broadcasts instruction;
Sending module 502, for the memory address according to all sound channels corresponding to programme content, broadcasts the first video input output card in controller by picture and text, sends in internal memory comprise the SDI embedded audio data that picture and text broadcast instruction to picture and text automatic broadcast system.
Preferably, the first determination module 500 also for:
Define the picture and text control command that will transmit, and after determining disconnection connected to the network, determine transmitting the appointment sound channel that picture and text broadcast the SDI embedded audio of instruction.
Preferably, the first determination module 500, specifically for:
Broadcast the size of instruction according to picture and text and picture and text broadcast controller to the sample frequency of programme content, determine that picture and text broadcast sound channel corresponding to instruction.
Based on same inventive concept, a kind of picture and text automatic broadcast system receiving picture and text broadcast instruction is additionally provided in the embodiment of the present invention, the method corresponding due to the picture and text automatic broadcast system of embodiment of the present invention reception picture and text broadcast instruction is receive the method that picture and text broadcast instruction, therefore the enforcement of embodiment of the present invention device see the enforcement of method, can repeat part and repeats no more.
As shown in Figure 6, the embodiment of the present invention five receives the picture and text automatic broadcast system that picture and text broadcast instruction, comprising:
The SDI embedded audio data received by the second video input output card, for the second memory address according to all sound channels corresponding to programme content, are stored in internal memory by the second memory module 600;
Second determination module 601, for determining that picture and text broadcast sound channel corresponding to instruction, wherein picture and text broadcast sound channel corresponding to instruction is picture and text control command for the sound in the programme content that controls, at least one sound channel in unappropriated digital serial interface SDI embedded audio sound channel;
Extraction module 602, for broadcasting the second memory address of sound channel corresponding to instruction according to the picture and text determined, extracts the data that picture and text broadcast instruction from internal memory;
Instruction module 603, for broadcasting the data sequence of instruction according to the picture and text extracted, data picture and text being broadcasted instruction combine, and obtain picture and text and broadcast instruction.
Preferably, instruction module 603 also for: broadcast after instruction obtaining picture and text, broadcast opening flag position in instruction and end mark position according to picture and text, judge that the picture and text received broadcast the integrality of instruction; After the picture and text broadcast instruction determining to receive is complete, the form broadcasting instruction according to picture and text broadcasts instruction to picture and text and resolves, and obtains control command, and operates programme content according to the control command obtained.
It can be seen from the above: the picture and text of the embodiment of the present invention broadcast controller after defining the picture and text control command that will transmit, determine that picture and text broadcast sound channel corresponding to instruction, wherein picture and text broadcast sound channel corresponding to instruction is picture and text control command for the sound in the programme content that controls, at least one sound channel in unappropriated digital serial interface SDI embedded audio sound channel; And the memory address of sound channel corresponding to instruction is broadcasted according to picture and text, store picture and text and broadcast instruction; Then according to the memory address of all sound channels corresponding to programme content, broadcast the first video input output card in controller by picture and text, send in internal memory to picture and text automatic broadcast system and comprise the SDI embedded audio data that picture and text broadcast instruction.This technical scheme can obtain the memory address of corresponding SDI embedded audio sound channel because picture and text broadcast controller by the first video input output card, store picture and text and broadcast instruction, thus SDI embedded audio sound channel picture and text broadcast instruction can be transmitted with the video/audio of the programme content of its control together with the first video input output card, therefore the video/audio making picture and text broadcast the programme content of instruction and its control can arrive picture and text broadcast system simultaneously, thus solve in prior art and transmitted by different modes from the video/audio of programme content because picture and text broadcast instruction and cause existing time delay, make easily to occur graph text information and the unmatched problem of program pictures content when broadcast items content.
The SDI embedded audio data received by the second video input output card, according to the second memory address of all sound channels corresponding to programme content, are stored in internal memory by the picture and text automatic broadcast system of embodiments of the invention; And determine that picture and text broadcast sound channel corresponding to instruction, wherein picture and text broadcast sound channel corresponding to instruction is picture and text control command for the sound in the programme content that controls, at least one sound channel in unappropriated digital serial interface SDI embedded audio sound channel; Then broadcast the second memory address of sound channel corresponding to instruction according to the picture and text determined, from internal memory, extract the data that picture and text broadcast instruction; Finally broadcast the data sequence of instruction according to the picture and text extracted, data picture and text being broadcasted instruction combine, and obtain picture and text and broadcast instruction.This technical scheme can receive by the second video input output card the video/audio that SDI embedded audio sound channel picture and text broadcast the programme content of instruction and its control due to picture and text automatic broadcast system simultaneously, and sound channel corresponding to instruction can be broadcasted according to picture and text and distinguish the data that picture and text broadcast instruction and corresponding SDI embedded audio, thus solve in prior art and transmitted by different modes from the video/audio of programme content because picture and text broadcast instruction and cause existing time delay, make easily to occur graph text information and the unmatched problem of program pictures content when broadcast items content.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. send the method that picture and text broadcast instruction, it is characterized in that, the method comprises:
Picture and text broadcast controller after defining the picture and text control command that will transmit, determine that described picture and text broadcast sound channel corresponding to instruction, it is described picture and text control command for the sound in the programme content that controls that wherein said picture and text broadcast sound channel corresponding to instruction, at least one sound channel in unappropriated digital serial interface SDI embedded audio sound channel;
Described picture and text broadcast controller broadcasts sound channel corresponding to instruction memory address according to described picture and text, store described picture and text and broadcast instruction;
Described picture and text broadcast the memory address of controller according to all sound channels corresponding to programme content, broadcast the first video input output card in controller by described picture and text, send in internal memory to described picture and text automatic broadcast system and comprise the SDI embedded audio data that described picture and text broadcast instruction.
2. the method for claim 1, is characterized in that, described picture and text broadcast controller before determining the appointment sound channel of the SDI embedded audio transmitting picture and text broadcast instruction, also comprises after defining the picture and text control command that will transmit:
Described picture and text controller determines disconnection connected to the network.
3. the method for claim 1, is characterized in that, described picture and text broadcast controller and determine that described picture and text broadcast sound channel corresponding to instruction, comprising:
Described picture and text broadcast controller and broadcast controller to the audio sampling frequency of described programme content according to the size of described picture and text broadcast instruction and described picture and text, determine that described picture and text broadcast sound channel corresponding to instruction.
4. receive the method that picture and text broadcast instruction, it is characterized in that, the method comprises:
The SDI embedded audio data received by the second video input output card, according to the second memory address of all sound channels corresponding to programme content, are stored in internal memory by picture and text automatic broadcast system;
Described picture and text automatic broadcast system determination picture and text broadcast sound channel corresponding to instruction, it is described picture and text control command for the sound in the programme content that controls that wherein said picture and text broadcast sound channel corresponding to instruction, at least one sound channel in unappropriated digital serial interface SDI embedded audio sound channel;
Described picture and text automatic broadcast system broadcasts the second memory address of sound channel corresponding to instruction according to the described picture and text determined, extracts the data that picture and text broadcast instruction from internal memory;
Described picture and text automatic broadcast system broadcasts the data sequence of instruction according to the described picture and text extracted, and the data that described picture and text broadcast instruction is combined, and obtains described picture and text and broadcasts instruction.
5. method as claimed in claim 4, is characterized in that, the data that described picture and text broadcast instruction combine by the data sequence extracting picture and text broadcast instruction by described picture and text automatic broadcast system, after obtaining described picture and text broadcast instruction, also comprises:
Described picture and text automatic broadcast system, according to the opening flag position in described picture and text broadcast instruction and end mark position, judges that the described picture and text received broadcast the integrality of instruction;
Described picture and text automatic broadcast system is after the described picture and text broadcast instruction determining to receive is complete, the form broadcasting instruction according to described picture and text broadcasts instruction to described picture and text and resolves, obtain control command, and according to the control command obtained, programme content is operated.
6. send the picture and text broadcast controller that picture and text broadcast instruction, it is characterized in that, these picture and text broadcast controller and comprise:
First determination module, for after defining the picture and text control command that will transmit, determine that described picture and text broadcast sound channel corresponding to instruction, it is described picture and text control command for the sound in the programme content that controls that wherein said picture and text broadcast sound channel corresponding to instruction, at least one sound channel in unappropriated digital serial interface SDI embedded audio sound channel;
First memory module, for broadcasting the memory address of sound channel corresponding to instruction according to described picture and text, stores described picture and text and broadcasts instruction;
Sending module, for the memory address according to all sound channels corresponding to programme content, broadcast the first video input output card in controller by described picture and text, send in internal memory to described picture and text automatic broadcast system and comprise the SDI embedded audio data that described picture and text broadcast instruction.
7. picture and text as claimed in claim 6 broadcast controller, it is characterized in that, described first determination module also for:
Define the picture and text control command that will transmit, and after determining disconnection connected to the network, determine transmitting the appointment sound channel that picture and text broadcast the SDI embedded audio of instruction.
8. picture and text as claimed in claim 6 broadcast controller, it is characterized in that, described first determination module, specifically for:
Broadcast the size of instruction according to described picture and text and described picture and text broadcast controller to the sample frequency of described programme content, determine that described picture and text broadcast sound channel corresponding to instruction.
9. receive the picture and text automatic broadcast system that picture and text broadcast instruction, it is characterized in that, this picture and text automatic broadcast system comprises:
The SDI embedded audio data received by the second video input output card, for the second memory address according to all sound channels corresponding to programme content, are stored in internal memory by the second memory module;
Second determination module, for determining that picture and text broadcast sound channel corresponding to instruction, it is described picture and text control command for the sound in the programme content that controls that wherein said picture and text broadcast sound channel corresponding to instruction, at least one sound channel in unappropriated digital serial interface SDI embedded audio sound channel;
Extraction module, for broadcasting the second memory address of sound channel corresponding to instruction according to the described picture and text determined, extracts the data that picture and text broadcast instruction from internal memory;
The data that described picture and text broadcast instruction for broadcasting the data sequence of instruction according to the described picture and text extracted, are combined, obtain described picture and text and broadcast instruction by instruction module.
10. picture and text automatic broadcast system as claimed in claim 9, is characterized in that, described instruction module also for:
After obtaining described picture and text and broadcasting instruction, according to the opening flag position in described picture and text broadcast instruction and end mark position, judge that the described picture and text received broadcast the integrality of instruction; After the described picture and text broadcast instruction determining to receive is complete, the form broadcasting instruction according to described picture and text broadcasts instruction to described picture and text and resolves, and obtains control command, and operates programme content according to the control command obtained.
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| CN201410844191.XA CN104581329A (en) | 2014-12-30 | 2014-12-30 | Method and device for transmitting and receiving image-text broadcasting instruction |
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Address after: 100101 Beijing city Chaoyang District District three building 10, building 1, Hui Li two Applicant after: Edip (Beijing) cultural Polytron Technologies Inc Address before: 100101 Beijing city Chaoyang District District three building 10, building 1, Hui Li two Applicant before: Beijing East Ideapool Technology Development Co., Ltd. |
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Application publication date: 20150429 |