CN1189956A - Data multiplexing appts. and method thereof - Google Patents
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- CN1189956A CN1189956A CN97190398A CN97190398A CN1189956A CN 1189956 A CN1189956 A CN 1189956A CN 97190398 A CN97190398 A CN 97190398A CN 97190398 A CN97190398 A CN 97190398A CN 1189956 A CN1189956 A CN 1189956A
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Abstract
A data multiplexer and a method thereof for multiplexing audio data, video data and additional data for digital television broadcasting. Size information for such data may be obtained and supplied by way of a CPU bus to a CPU which utilizes such size information in controlling a multiplexing operation. The audio, video and additional data may be multiplexed under the control of the CPU without being supplied to the CPU. As a result, high speed multiplexing may be performed.
Description
The present invention relates to a kind of apparatus and method of the transport stream that is used for multiplex video data, voice data and is used to send such as the additional data and the generation of captions, wherein video data and voice data can be compressed and encode according to MPEG (Motion Picture Experts Group) standard or similar standard.
In digital television broadcasting system, voice data and video data can be processed to be used for such as film or music sales promotion (promotion).More specifically, in such digital television broadcasting system, data can be processed to be and be suitable for so-called ambiophonic system, voice data can be processed so that express with several language, perhaps thereby voice data, video data and additional data can multiplexedly produce a transport stream, one of them dialogue can superpose with several language, and is broadcast to spectators.
The object of the present invention is to provide and a kind ofly be used to make digital television broadcasting system or analog sound intermediate frequency data, video data and the additional data can be by multiplexed a kind of data multiplexer and method thereof.
Another object of the present invention provides a kind of foregoing data multiplexer and method thereof, wherein said data can be with high relatively speed multiplexed and type wherein additional data and handle in variation can easily be adapted to.
According to an aspect of the present invention, provide a kind of data multi-way multiplying apparatus, comprising: a data size detection device is used to detect the size of data of inputting video data and voice data; A buffer storage is used for buffer memory inputting video data and voice data; One be used in response to each size of data that is detected inputting video data and voice data are formed a multiplexed plan (plan) thereby and in response to the multiplexed device that obtains multiplexed data flow of this multiplexed plan control video data and voice data; Article one, bus is used to connect described size of data checkout gear and described control device; Article one, data provide line, are used to provide inputting video data and voice data to described buffer storage; And DOL Data Output Line, be used to export multiplexed data flow and give external device (ED).Thereby providing line apparatus and DOL Data Output Line device to be separated, this bus and data make video data and voice data not by this bus.
Described control device preferably can comprise a computer, and described bus can comprise a computer bus that is connected to this computer.Further, this data multiplexer also can comprise (or a plurality of) code device, be used for coding video frequency data, voice data and first additional data, and the data that are used for being encoded offers size of data checkout gear and buffer storage.Further, this data multiplexer also can comprise data sink, is used to receive second additional data from the outside to be provided to a data choice device.
This data multiplexer can the multiplex video data, voice data and such as first additional data that is used in the captions in the digital television broadcasting system, and can be further multiplexed such as second additional data (private data) of superimposed dialogue to multichannel in the data after multiplexing to produce transmitting data stream.In such data multiplexer, the multiplex system that is used for direct multiplex video data and other data (such as voice data etc.) is controlled multiplexed control system with being used to of separating from multiplex system and can is provided like this and dispose, and makes the video data that will be re-used and other data and the data that are associated with multiplexed control to handle respectively in corresponding system.
In this data multiplexer, size of data is determined or counting device can be positioned in the control system and after video data, voice data and additional data are according to mpeg standard or similar standard compression and coding, count these data to obtain data size information.Buffer storage can be arranged in this multiplex system and can comprise FIFO (first in first out) memory or analog is used for the buffer memory video data, the voice data and first additional data.First and second data multiplexs part can be included in this multiplex system, wherein first data multiplex part can be selected and the video data of multiplexed buffer memory, voice data, and/or first additional data, and second data multiplex part can be selected partly to be selected and multiplexed video data by first data multiplex, the arbitrary data of the voice data and first additional data, perhaps can be chosen in second additional data under the control of control system such as the dialogue data of stack, and can be multiplexed by multiplexed any video data, the voice data and first additional data, and second additional data.Described control device can be placed in the control system and be formed for coming multiplex video data, voice data, first additional data and second additional data based on the size of data of the video data of being determined by the size of data counting device or count, voice data, additional data, time is adjusted, the plan of planning (scheduling) etc.This control device also can be based on the selection of this multiplexed plan control first and second data multiplexs part, so that control the multiplexed of data in first and second data multiplexs part.
According to a further aspect in the invention, provide a kind of data multiplex method, comprise step; Receiving video data, voice data, first additional data and second additional data; The video data that acquisition receives, the size of data of the voice data and first additional data; The video data that buffer memory receives, the voice data and first additional data; Select the video data of buffer memory, the voice data or first additional data; Second additional data of selective reception or the video data of buffer memory, data of selecting in the voice data and first additional data; Based on video data, voice data, the size of data of first additional data and second additional data is formed for the multiplex video data, voice data, the plan of first additional data and second additional data; Control video data based on this multiplexed plan to buffer memory, the selection of the voice data or first additional data and to the selection of selecteed data in video data, voice data and first additional data of second additional data or buffer memory, thereby multiplex video data, voice data, first additional data and second additional data.
To becoming the detailed description of embodiment obviously, corresponding component is represented by same numeral in the accompanying drawing from following for other purpose of the present invention, characteristics and advantages accompanying drawing.
Fig. 1 is the calcspar according to the data multiplexer of the embodiment of the invention;
Fig. 2 is the calcspar according to the data multiplexer of the embodiment of the invention;
Fig. 3 is the calcspar of video encoder in the data multiplexer of Fig. 2;
Fig. 4 is the calcspar of the data multiplexer sound intermediate frequency encoder of Fig. 2; With
Fig. 5 is used for the flow chart quoted in CPU carries out in the data multiplexer of key-drawing 2 the processing.
Fig. 1 explains a data multiplexer 1.As shown therein, such data multiplexer can comprise 24, one captions encoders 28 of 20, one audio coders of a video encoder and the multiplexer 10 with buffer storage 100 and a transport stream maker 102.Data multiplexer 1 video flowing that can receive and encode, an audio stream, a caption stream (being used for film or music sales promotion) and it multiplexedly can be become a stream producing a transport stream, this is after this with more detailed description.
More specifically, video encoder 20 can receive from the video data such as the external device (ED) (not shown) of editing device etc., and the video data that can receive according to preassigned (as MPEG 2 standards or similar standard) compression and coding and the acquisition data export in the buffer storage 100 as video flowing.Audio coder 24 can receive data and the voice data that can receive according to preassigned (as MPEG 2 standards or similar standard) compression and coding and the data that obtained are exported in the buffer storage 100 as audio stream from the external device (ED) (not shown).Captions encoder 28 can receive from the outside produce caption data device (not shown) caption data and can be by predetermined processing (handling) the encode caption data that receives and resulting result exported to buffer storage 100 as caption stream as equal interval quantizing processing and block code.
Buffer storage 100 buffer memorys are respectively by high frequency encoder 20, the video flowing that audio coder 24 and captions encoder 28 provide, and audio stream and caption stream, and provide and export to transmission stream generator 102.The transmission stream generator 102 that can comprise the computer with a microprocessor (CPU) or analog can obtain or read video flowing, audio stream, and caption stream (each can be described as basic stream (elementary streams)) from buffering memory 100; Rule (scheduling) be can carry out and can a leader or analog be increased to produce the therefrom transport stream of output according to transformat.
In data multiplexer 1, buffer storage stores whole basic stream therein temporarily, and the CPU of transmission stream generator 102 carries out such as planning and adding leader to produce a transport stream.Yet in carrying out such processing, CPU can visit each word (byte) of basic stream in the mode that may produce so-called bus bottleneck etc. in the data/address bus of transmission stream generator 102 by data/address bus, and this will hinder or hinder high speed processing.Therefore, such processing mode is unacceptable to forming transport stream.
Data multiplexer 2 is described with reference to Fig. 2-5, and it can overcome the problems referred to above of data multiplexer 1.In such multiplexer 2, the multiplex system of multiplexed basic stream will separate from being used for directly by being used for planning control system with multiplexed basic stream, and the high speed that can obtain transport stream produces, and followingly describe more comprehensively.
As shown in Figure 2, data multiplexer 2 generally includes video encoder 20, audio coder 24, captions encoder 28, multiplex system 12 and control system 42.Multiloop loop system 12 can comprise FIFO memory 32a, 32b and 32c, and RAM 430, the first switching circuits 34,36, one FIFO memories 38 of second switch circuit and a SCSI (small computer system interface) circuit 40 can connect as shown in Figure 2.Control system 42 can comprise size of data counting interface circuit 30a, 30b, and 30c, an Ethernet interface (ENIF) circuit 420,24, one of 422, one CPU4 of a serial line interface (SIF) circuit locate RAM 426, with a control data RAM 428, they can be coupled by cpu bus as shown in Figure 2.
Audio coder 24 can comprise a subband analysis filterbank (SAFB) 240, an equal interval quantizing circuit 242,246, one psychological auditory models 248 of position compressor circuit 244, one fast Fourier transform (FFT) circuit, a dynamic bit distributor circuit 250, a scale factor selects 252, one scale factors of information storage circuit to extract 254, one side informations of circuit (side information) coding circuit 256, produce circuit 258 with a bit stream, as shown in Figure 4.Audio coder 24 is adapted to receive the voice data (audio frequency input) that comes from an external device (ED) and according to a preassigned, with its compression and coding, and produce an audio stream (mpeg audio stream) that is used to offer size of data IF30b and FIFO memory 32b (Fig. 2) as MPEG 2 or similar standard.Further describing of audio coder can be by K.Brandenburg et al. like this, at magazine J.Audio Eng.Soc., Vol.42, NO.10, in October, 1994, the exercise question of delivering on the 780-792 page or leaf is " ISO-MPEG-1 audio frequency: the universal standard of the high-quality digital audio that is used for encoding " acquisition, here as a reference.
Captions encoder 28 be adapted to be similar to previously described mode receive from external device (ED) such as the additional data of caption data with to its coding, and produce the caption stream be used to provide to size of data IF30c and FIFO memory 32c (Fig. 2).
Further, coded data (as caption data, closed title (closed-caption) data, or the like) can provide by external device (ED).For example, the coding caption data can pass through a LAN as Ethernet (local area network (LAN)), the caption data that is provided to ENIF circuit 420 or coding can be provided to serial line interface 422 by a string line, and such coding caption data that receives can be provided to memory 430 to be stored in wherein by this cpu bus.Because it is relatively little that the video data of amount and the coding of the caption data of coding and/or the voice data of coding are compared, the caption data that coding is provided can not influence the traffic of cpu bus to the cpu bus nocuously.Under such situation, ENIF circuit 420 or serial line interface 422 can detect such as leader and/or size information (this can be written in the leader) in the coding title data, and the information that is detected can be provided among the CPU (CPU) 424 by cpu bus.
In multiplex system 12 (Fig. 2), FIFO memory 32a, 32b and 32c buffer memory respectively are received from video encoder 20, the video flowing of audio coder 24 and captions encoder 28, audio stream and caption stream and input terminal a, b and the c of output stream to switching circuit 34 are provided.In addition, the caption data that is stored in the coding among the RAM430 can offer the input terminal of switching circuit 34 under the control of CPU 424.According to the control signal that can be provided by CPU 24, switching circuit 34 is selected input terminal a, b, c, d one of any and provide basic stream on the input terminal that is provided to selection accordingly to the input terminal b of switching circuit 36.Consequently, multiplexed signal or the stream input terminal b that can form and be provided to switching circuit 36.When not having basic stream to be provided to input terminal one of any or when carrying out so-called filling (stuffing) and handle, switching circuit 34 can not selected any input terminal a, b, c and d, and thus, export the clear data (for example continuous 1 or 0 logical value) of a scheduled volume.
It can be signal of expression leader or the input terminal a that additional data flow to switching circuit 36 that RAM (random access memory (RAM)) 26 can provide.According to the control signal that can be provided by CPU 424, switching circuit 36 can select the one of any of input terminal a and b so that multiplexedly be provided to the basic stream of switching circuit 36 terminal b and by handling the additional data flow (heading information) that memory 426 is provided to the input terminal a of switching circuit 36 by switching circuit 34.One data flow multiplexed or that select is provided to FIFO memory 38 and SCSIIF circuit 40 by switching circuit 36.
FIFO memory 38 buffer memorys are received from the multiplexed data stream of switching circuit 36 and provide output or transport stream to an external device (ED) (not shown) such as connection etc.SCSIIF circuit 40 receives from the multiplexed data stream of switching circuit 36 and with it and provides to such as hard disk drive (HDD) or magneto optical driver (MOD), and wherein data flow is stored in this storing apparatus (not shown).
In control system 42, size of data IF30a, 30b and 30c can be to respectively by video encoders 20, audio coder 24, the video flowing that provides with heading code device 28, every frame count size of data of audio stream and caption stream, and can provide the result who is obtained to CPU42 by cpu bus.The counting of such size of data can be included in size of data IF30a by use, and the counter among 30b and the 30c is finished.Or data size information can be provided by corresponding encoder decision and as since then output signal, and so thus data size information signal can be detected and be offered CPU424.
ENIF circuit 420 can receive private data and can pass through the cpu bus dateout to CPU 424 by a LAN (not shown) such as Ethernet.SIF circuit 422 can receive the private data with serial form from for example computer or analog, and dateout is to CPU 424.So-called private data like this can comprise the caption data of coding, closed title data, user data or the like.
CPU 424 can comprise a microprocessor and be used to store the ROM (read-only memory) of program.Such CPU be adapted to receive and storage by size of data IF30a, the size of data that 30b and 30c come, and from the data of ENIF circuit 420 and SIF circuit 422.The multiplex operation that CPU further is adapted to form a multiplexed plan or controls this data multiplexer.That is to say, CPU 424 can be based on being stored in basic flow multiplexed of handling among the RAM 426 of size of data control, regularly regulate and multiplexed planning, and pass through the switch of cpu bus control switch circuit 34 and 36 or multiplexed according to multiplexed plan.
The control data that is used for handling CPU 424 can be stored in control data RAM 428.In addition, CPU can control or utilize processing RAM 426 to be used for handling, storage, and/or data are provided.For example, CPU 424 can use and handle RAM 426 generation heading informations, store such heading information, and according to being stored in the input terminal a that control data among the control data RAM 428 outputs to heading information based on planning process or analog switching circuit 36.Or heading information or its part can produce and be stored among the RAM426 based on the private data (as user data) that is provided by ENIF circuit 420 or SIF circuit 422.
The operation of data multiplexer 2 will be described below now.
Video data, voice data and caption data are provided to video encoder 20 respectively, audio coder 24 and captions encoder 28 and therein the coding.At size of data IF 30a, the data among 30b and the 30c decide and the enumeration data size that obtained is provided to CPU 424 by counting for the video flowing of coding, audio stream and caption stream.
On the other hand, when the caption data of coding is provided to ENIF circuit 420 by LAN (as Ethernet), perhaps when the caption data of coding is provided to serial line interface 422 by a string line, ENIF circuit 422 or serial line interface 422 can detect size of data, and the size of data of Jian Ceing is provided to CPU 424 by cpu bus thus.In this case, the sub-code data of coding can be provided to RAM 430 and therefrom output to the input terminal d of switching circuit 34 under the control of CPU424.
Data can be according to passing through the use of switching circuit 34 and 36 by switch and multiplexed from the control signal of CPU 424.Output from switching circuit 36 is provided to FIFO 38 and SCSIIF circuit 40.The transport stream that data that FIFO 38 buffer memorys receive and output can provide through a connection or analog.The data that SCSIIF circuit 40 transmission receives to hard disk drive or analog so that with its record.
The processing of being undertaken by CPU 24 will further describe in conjunction with the flow chart of Fig. 5.
In step S102, CPU 424 receives from size of data IF30a, the video flowing of 30b and 30c, the size of data of the frame of audio stream and caption stream (or a plurality of frame) and the size of data that storage receives in handling RAM 426.CPU 424 can receive the size of data from ENIF circuit 420 and SIF circuit 422, thus the such size of data of CPU 424 storages.Then, handle and proceed to step S103, wherein parameter is by CPU 424 initialization.Then, processing proceeds to step S104.
In step S104, CPU 424 forms a multiplexed plan.That is to say, determine a circulation number of repetition.Such circulation number of repetition can indicate insert a frame of video or a frame of video during in the number of bag (packet), the size of one of them bag can have a fixing predetermined value as 188 bytes.Therefore, circulation number of repetition N can be based on the data transfer rate decision of transport stream.For example, circulation number of repetition N can be defined as data transfer rate (byte)/per second 30 frames (when adopting the TSC-system formula)/188 (bytes) of transport stream.Multiplexed planning decides with each size of data that receives based on circulation number of repetition N.
Then, handle proceeding to step S106, wherein judge by CPU 424 whether instruction video stream will be output in multiplexed plan.If this judgement is sure, handle proceeding to step S107.At step S107, CPU 424 control switch circuit 36 are so that select heading information from input terminal a, and heading information can be provided by memory 426.After this, processing proceeds to step S108, wherein CPU 424 control switch circuit 34 are selected video flowings (this can obtain from the terminal a of switching circuit 34), and control switch circuit 36 to select data flow (this can by obtaining) from switching circuit 36 terminal b from switching circuit 34 thus this video flowing is multiplexed in the transport stream.Handle then and proceed among the step S110.
On the other hand, if the judgement in step S106 is negated to handle proceeding to step S110.
In step S110, CPU 424 judges whether multiplexed plan indicative audio stream will be output.If such judgement is sure, handle proceeding to step S111.In step S111, CPU424 control switch circuit 36 is so that heading information is selected by input a, and heading information can be provided by memory 426.After this, processing proceeds to step S112, wherein CPU 424 control switch circuit 34 are selected audio streams (this can be obtained by the terminal b from switching circuit 34), and control switch circuit 36 to select data flow (this can be obtained by the terminal b from switching circuit 36) from switching circuit 34 thus audio stream is multiplexed in the transport stream.
On the other hand, if the judgement in step S110 is negated to handle proceeding to step S114.
In step 114, CPU 424 judges whether multiplexed plan (process) indication caption stream will be exported from the caption stream encoder.If judge it is sure, handle proceeding to step S115.At step S115, CPU 424 control switch circuit 36 are so that heading information is selected from input terminal a, and heading information can be provided by RAM 426.After this, processing proceeds to step S116, wherein CPU424 control switch circuit 34 is selected caption stream (this can obtain from the terminal c of switching circuit 34), and control switch circuit 36 to select data flow (this can be obtained by the terminal c from switching circuit 36) from switching circuit 34 thus caption stream is multiplexed in the transport stream.Handle then and proceed to step S118.
If on the other hand, the judgement in step S114 is negated to handle proceeding to step S118.
In step S118, CPU 424 judges that multiplexed plan indication adds or whether private data stream (heading information) will be exported.If such judgement is sure, handle proceeding to step S119.In step S119, CPU 424 control datas with multiplexed additional data flow (heading information) on transport stream.Then, handle to proceed to step S120, CPU424 control switch circuit 34 here, switching circuit 36 and RAM 430 with from RAM 430 output private datas, make private data stream is multiplexed in the transport stream.After this, processing proceeds to step S122.
If on the other hand, the judgement in step S118 is negated to handle proceeding to step S122.
In step S122, whether CPU424 judges n=N.If judge it is sure, that is to say, if n=N then handles stopping.Yet, if judge and to negate, that is to say n ≠ N, n adds 1 and handle and turn back to step S106.
Thereby, in data multiplexer 2, the expression video data, the information of the size of voice data and/or additional data can be provided to CPU by CPU or data/address bus; And having the video data of relatively large number according to amount, the basic stream of voice data and/or additional data or (a plurality of) can be transferred to CPU without cpu bus.On the contrary, video data, voice data and/or additional data can provide to form transmission or multiplex stream by a plurality of switching circuits.Consequently, the probability of happening of bottleneck or bus bottleneck is greatly diminished on cpu bus, is multiplexed on the transport stream at high speed flowing substantially thereby can reach.
Further, captions encoder 28 and private data line all can be used to provide information.For example, caption information can provide and closed title can provide by the private data line by captions encoder 28.As another example, caption information can be provided and out of Memory can provide by captions encoder 28 by the private data line.No matter should be pointed out that is that private data line or encoder 28 can be omitted according to needed application or purposes.
In addition, because multiplexed software processes of planning to be carried out by CPU424 when each transport stream produces forms, the present invention compares as the configuration of transport stream with using the multiplexed basic stream of hardware, and additional data flow (heading information) type and the quantity that must add can be changed easily.
Although the data multiplexer that Fig. 2 describes has some for every type of element, multiplexer of the present invention is not limited to this, and can have these elements of varying number.For example, can use and do not have or more than an ENIF circuit 420 or SIF circuit 422.Further, the basic stream of arbitrary number can be by multiplexed to obtain a transport stream.
In addition, data multiplexer 2 can be revised to obtain the transport stream required to application-specific.For example, data multiplexer 2 can be modified and come multiplexed to obtain transport stream so that the data flow relevant with editing and processing or broadcasting processing can substitute caption stream.
Like this, as described above, data multiplexer of the present invention can allow will be at the voice data in digital television broadcasting system or the similar system, video data and additional data with relative high speed by multiplexed, and can allow the variation of additional data kind and handle in variation realize easily.
Although the preferred embodiments of the present invention and modification have been described in detail in this, must understand that the present invention is not limited to these embodiment and modification, and those skilled in the art can make other modifications and variations under not breaking away from by the situation of the spirit and scope of claims definition.
Claims (12)
1. data multi-way multiplying apparatus comprises:
The size of data checkout gear is used to detect the size of data of inputting video data and voice data;
Buffer storage is used for described inputting video data of buffer memory and voice data;
One control device, be used to respond each size of data of being detected described inputting video data and voice data are formed a multiplexed plan, and multiplexed to obtain multiplexed data stream in response to described inputting video data of described multiplexed plan control and voice data;
Bus unit is used to connect described size of data checkout gear and described control device;
Data provide line apparatus, are used to provide described inputting video data and voice data to described buffer storage; With
The DOL Data Output Line device is used to export described multiplexed data flow to an external device (ED),
Described bus unit and described data provide line apparatus and described DOL Data Output Line device to be separated so that described video data and voice data do not pass through described bus unit.
2. data multi-way multiplying apparatus as claimed in claim 1, wherein said control device comprise a computer, and wherein said bus unit comprises a computer bus that is connected to described computer.
3. data multi-way multiplying apparatus as claimed in claim 2 further comprises a code device, is used to encode be provided to the video data of described size of data checkout gear and described buffer storage, voice data and first additional data.
4. data multi-way multiplying apparatus as claimed in claim 1 further comprises data sink, is used to receive additional data and is used to provide the additional data that is received to data selection means.
5. data multiplex method comprises step:
Receiving video data, voice data, first additional data and second additional data;
Obtain received video data, the size of data of the voice data and first additional data;
The video data that buffer memory is received, the voice data and first additional data;
Select the video data of institute's buffer memory, the voice data or first additional data;
Select the video data of the second received additional data or institute's buffer memory, one of selecteed in the voice data and first additional data;
Based on described video data, the size of data of voice data and additional data is formed for multiplexed described video data, voice data, the plan of first additional data and second additional data; And
Video data based on described multiplexed plan control institute buffer memory, voice data, or the video data of the selection of first additional data and second additional data or institute's buffer memory, voice data, with selection one of selected in first additional data, with multiplexed described video data, voice data, first additional data and second additional data.
6. data multi-way multiplying apparatus comprises:
Be used to receive the device of voice data and video data;
Be used for device to described voice data and described video data acquisition size information;
Control device is used for receiving described size information through one first generator from described acquisition device; And control the multiplex operation of described voice data and described video data according to described size information; With
The device that comprises one second generator is used for multiplexed described voice data and video data to form a multiplexed data flow and this multiplexed data stream therefrom is provided;
Described first device and described second generator are configured to make described voice data and described video data not to be provided in the described calculation element.
7. data multi-way multiplying apparatus comprises:
Be used to receive voice data, the device of video data and additional data and be used to obtain described voice data, the device of the size information of video data and additional data;
Control device is used for receiving described size information and being used for providing control signal according to described size information by data/address bus from described deriving means; With
Be used for according to the multiplexed described voice data of described control signal, described video data and described additional data to be forming multiplexed data flow and the device of described multiplexed data stream therefrom is provided,
Described data/address bus is configured to make described voice data and described video data not to be provided to described control device.
8. according to the data multi-way multiplying apparatus of claim 7, wherein said additional information comprises caption data.
9. according to the data multi-way multiplying apparatus of claim 6, the wherein said device that obtains size information comprises and is used to count described voice data, the counter of described video data and described additional data.
10. data multiplex method comprises step:
Receive voice data, video data and additional data and to described voice data, described video data and described additional data obtain size information;
Provide described size information to a CPU (CPU) by data/address bus according to described size information formation control signal; With
According to the multiplexed described voice data of described control signal, described video data and described additional data are to form a multiplexed data flow;
Described data/address bus is configured to make described voice data and described video data not to be provided to described control device.
11. according to the data multiplex method of claim 10, wherein said additional information comprises caption data.
12. according to the data multiplex method of claim 10, wherein said size information is by the described voice data of counting, described video data and described additional data obtain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97190398A CN1189956A (en) | 1996-03-19 | 1997-03-18 | Data multiplexing appts. and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| JP62474/96 | 1996-03-19 | ||
| CN97190398A CN1189956A (en) | 1996-03-19 | 1997-03-18 | Data multiplexing appts. and method thereof |
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| CN97190398A Pending CN1189956A (en) | 1996-03-19 | 1997-03-18 | Data multiplexing appts. and method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000040029A1 (en) * | 1998-12-23 | 2000-07-06 | Zhengfang Ma | Method and apparatus for broadcasting the compressed data and for receiving the broadcasted data |
| CN101324869B (en) * | 2008-07-03 | 2010-04-14 | 北京中星微电子有限公司 | Multiplexor based on AXI bus |
| US8194143B2 (en) | 1998-08-24 | 2012-06-05 | Sony Corporation | Digital camera apparatus and recording method thereof |
-
1997
- 1997-03-18 CN CN97190398A patent/CN1189956A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8194143B2 (en) | 1998-08-24 | 2012-06-05 | Sony Corporation | Digital camera apparatus and recording method thereof |
| WO2000040029A1 (en) * | 1998-12-23 | 2000-07-06 | Zhengfang Ma | Method and apparatus for broadcasting the compressed data and for receiving the broadcasted data |
| CN101324869B (en) * | 2008-07-03 | 2010-04-14 | 北京中星微电子有限公司 | Multiplexor based on AXI bus |
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