CN101064838A - Digital satellite broadcast receiver and its information processing method - Google Patents
Digital satellite broadcast receiver and its information processing method Download PDFInfo
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Abstract
A kind of digital satellite broadcasting receiver and information processing method, the method of the invention includes: the program received is transferred into transmission flow; the utilized process is proceed in multipath allotter to separate or pick up audio signal, video signal and PSI/SI information; Obtaining the playing bit rate and buffer time information of audio signal/ video signal from picked PSI/SI information; obtaining the buffer size of control audio/video information; when buffering for playing audio/video signal, comparing with size of control buffer resolved; when the size of control buffer is smaller than buffer of said audio/video signal, said buffered audio/video signal is transferred to multimedia digital signal coder and decoder to play the audio and video signal, so, the invention can play program continuously.
Description
Technical field
The present invention relates to digital satellite broadcast receiver, more particularly, be about in satellite broadcast reception converter uninterruptedly a kind of digital satellite broadcasting of audio plays (Audio) and video (Video) receive and information processing method.
Background technology
The standard of digital broadcasting is divided into DVB (the Digital Video Broadcasting: the digital video broadcasting) VSB of the mode and the U.S. (Vestigial Sideband Broadcasting: imperfect frequency band broadcasting) mode in Europe substantially.Wherein Korea S adopts the standard of VSB mode as digital TV at present.But, at DAB (Digital AudioBroadcasting: under situation digital audio broadcasting), adopting the DVB mode is standard, though DAB utilizes satellite can only carry out radio broadcasting in the early stage, just upgrade to DMB (DigitalMultimedia Broadcasting: DMB) gradually with the image service synchronization.
The DVB mode is to be feature with the publicly-owned property that improves wired TV, satellite, terrestrial broadcasting and public audiovisual antenna many medium such as (SMATV), and signal code and compression are based on MPEG2.
In addition, (Conditional Access: conditional access), regulation is based on common Descrambling Algorithms in order to possess entrant's management function.
Artificial satellite), the DVB-C of digital cable TV broadcasting (Cable: cable), the next specification of the DVB-T of terrestrial broadcasting digital broadcasting etc. the DVB mode has satellite digital TV broadcasting DVB-S (Satellite:.
In for the system that carries out the DMB service, digital system E shown in the ITU-RBO.1130-4 Recommendation will be transformed into CDM (CodeDivision Multiplex) signal that terminating machine can receive, the digital repeater that use can send with the satellite-signal that the DVB-S mode is sent out.
This repeater that plays a role is commonly referred to message interrupts replensiher (gap filler: the message interrupts replensiher).Above-mentioned message interrupts replensiher is that a kind of area of covering at electric waves such as the intensive zone of skyscraper, tunnels can receive broadcasting, receive the electric wave of being launched from sending, and the small-power that can send again sends institute again.
Fig. 1 is the key diagram that transmits the digital information method according to general satellite dmb mode.
As shown in Figure 1, satellite dmb forms service in zone higher than terrestrial broadcasting and the corresponding 2.535-2.655GHz zone of hyperfrequency (UHF).Terrestrial broadcasting DMB has covered the urban area from ground high mountain or high-rise emission electric wave, and satellite dmb is launched electric wave to whole country (Hanbando) from extraatmospheric satellite, once just can realize the broadcasting to the whole nation.
The content provider that broadcasting office (UP Link center) is made, broadcasting society, information issuing person, PSTN, PDA, mobile phone etc. are illustrated as diversified various content information such as news, music video, motion, film, drama, song, foreign language, security, traffic, weather, by Ku frequency band (13.824-13.883GHz) to satellite transmission.
Satellite uses DMB these signals to be sent to mobile phones such as ground mobile phone, PDA with the S frequency band that distributes.
When being difficult to directly to receive from signal that above-mentioned satellite transmission comes, just mobile phones such as the mobile phone that need go up earthward by the repeater of being mentioned in the above-mentioned explanation that is called message interrupts replensiher (Gap Filler), PDA transmit signal, it can not be subjected to the restriction in time, space, at any time, any place can use DMB service.
Particularly, the branch of terrestrial broadcasting DMB can compatible about 4 channels with comprising video 1-2.Compare with this, satellite dmb just more can provide various service.
In several satellite broadcasting specification DMB form books of above-mentioned explanation, if receive digital signal from satellite, allotter part will be converted to program unit with this digital signal so, carries out separating treatment to including audio signal/vision signal and program managing detailed catalogue/information on services (hereinafter to be referred as PSI/SI information) signal.
Particularly, the above-mentioned PST/SI information information setting that the multiple information of relevant programme information, output time, programme variety, the running time of program, the match time of Voice ﹠ Video information etc. are various is tabulation.
Identical therewith, information is after the office of being broadcasted is made into program, and when sending it to satellite, also the information with relevant each program sends out together.
Like this, receiver is separated each audio signal and vision signal with program unit and to be carried out decoding processing and play after receiving these information.
But, after audio signal and vision signal decoding processing,, play again after it need being filtered into a certain size unit for playing.The audio signal of different programme varieties and the broadcasting speed of vision signal have nothing in common with each other, and this just makes Voice ﹠ Video frequent problem that pause occurs when playing.
Promptly, audio signal and vision signal are after decoded, each program of size of buffering is all inequality before playing, if information and decoding, the buffer sizes that cushions PSI/SI information such as these temporal informations are not complementary, the audio/video of being play just can't continue broadcast.
For example, the PSI/SI programme information vision signal and audio signal can occur and finish the problem that stops to play before the buffering when not reaching the needed buffering of playing audio signal and vision signal.
Summary of the invention
The objective of the invention is in order to address the above problem, a kind of digital satellite broadcast receiver and information processing method thereof are provided, obtain the audio/video signal of playing by PSI/SI information and play bitrate information and play buffering temporal information, the controller buffer size of control audio/vision signal play-out buffer size, and be the buffering capacity of standard control audio and vision signal with this numerical value, broadcast program incessantly so just.
To achieve these goals, the information processing method of digital satellite broadcast receiver of the present invention is characterised in that and comprises following six steps:
First step behind the programme information signal that receives, is converted into and transmits stream;
Second step is carried out branch with changing processing with above-mentioned transmission stream in allotter part, separates and extraction audio signal, vision signal and program detail/service (PSI/SI) information;
Third step is from the broadcast bitrate information and the buffering temporal information of the audio signal/vision signal of corresponding each the program unit of the PSI/SI information acquisition of said extracted;
The 4th step, utilization is the buffer size of control audio/video information from the broadcast bitrate information and the buffering temporal information of the audio signal/vision signal of the PSI/SI information acquisition of said extracted, obtains the size of buffer control unit control buffering;
The 5th step is when playing above-mentioned audio/video signal and cushion, for the size of the buffering of controlling above-mentioned audio/video and the buffer control unit control buffering obtained compares mutually;
The 6th step, the size of above-mentioned buffer control unit control buffering is less than when carrying out the buffer size of the above-mentioned audio/video signal that above-mentioned broadcast cushions, send the audio/video signal of above-mentioned buffering to codec, audio plays and vision signal.
Here, also comprise when the buffering of the above-mentioned audio/video signal that cushions than carrying out above-mentioned broadcast when above-mentioned controller buffer size is big, when the audio/video signal that need wait until above-mentioned buffering becomes also bigger than above-mentioned controller buffer, the step that the buffering of above-mentioned audio/video signal just can continue;
When the buffering of above-mentioned audio/video signal during greater than above-mentioned controller buffer size, the above-mentioned audio/video signal of above-mentioned buffering is sent to codec, carry out the step of audio plays and vision signal.
In addition, when above-mentioned programme information signal being encoded transmission, on the audio frequency of corresponding programme variety and video information, replenish the buffer time information when playing bitrate information and these information of broadcast, when when playing buffer size that above-mentioned audio/video signal cushions and have than the big numerical value of above-mentioned controller buffering, because can audio plays/vision signal, so above-mentioned audio/video signal just can be play incessantly.
In addition, to achieve these goals, digital satellite broadcast receiver of the present invention comprises following seven parts:
The one, the antenna of program receiving information signal;
The 2nd, be the fore-end of transport stream signals with the three-way programme information conversion of signals that receives;
The 3rd, carry out branch with changing processing with in said front part, being converted into the signal that transmits stream, the allotter part that audio signal, vision signal, the PSI/SI information signal of corresponding each program separated and extract;
The 4th, with the decoder of the audio signal of the branch usefulnessization in the above-mentioned allotter part, vision signal and the decoding of PSI/SI information signal;
The 5th, the audio/video buffer that the audio signal and the vision signal of above-mentioned decoder decode are carried out buffered;
The 6th, the audio-frequency/video frequency system controller, it is from comprising that above-mentioned audio/video buffer carries out obtaining to play needed bitrate information and buffering temporal information the PSI/SI information of the audio signal of buffered and vision signal, be the audio signal of controlling above-mentioned buffered and the buffer size of vision signal, it also obtains the numerical value of controller buffer size;
The 7th, according to the controller buffer magnitude numerical value that above-mentioned audio-frequency/video frequency system controller obtains, control the buffer control unit that above-mentioned buffer carries out buffer size.
Here, the digital satellite broadcast receiver among the present invention is characterised in that: comprise the control according to above-mentioned buffer control unit, play the codec that carries out the audio signal and the vision signal of buffered in above-mentioned buffering branch.
In addition, digital satellite broadcast receiver among the present invention is characterised in that: in above-mentioned audio-frequency/video frequency system controller, obtaining the above-mentioned audio/video bumper portion of control carries out after the controller buffer size of the audio signal of buffered and vision signal, above-mentioned buffer control unit is that standard is controlled the buffer sizes that above-mentioned bumper portion is carried out buffered with this numerical value, in above-mentioned buffer control unit, when playing above-mentioned audio signal and vision signal, the size of buffering is play the audio signal and the vision signal of above-mentioned buffered during greater than the controller buffer obtained size in above-mentioned codec in above-mentioned audio-frequency/video frequency system controller.
In the present invention, obtain the audio/video signal of playing by PSI/SI information and play bitrate information and play buffering temporal information, the controller buffer size of control audio/vision signal play-out buffer size, and be the buffering capacity of standard control audio and vision signal with this numerical value, broadcast program incessantly so just.
Effect of the present invention:
Described in as described above, digital satellite broadcast receiver of the present invention and information processing method advantage thereof are to obtain the audio/video signal of playing by PSI/SI information and play bitrate information and play buffering temporal information, the controller buffer size of control audio/vision signal play-out buffer size, and be the buffering capacity of standard control audio and vision signal with this numerical value, broadcast program incessantly so just.
For further specifying above-mentioned purpose of the present invention, design feature and effect, the present invention is described in detail below with reference to accompanying drawing.
Description of drawings
Fig. 1 is the key diagram that transmits the digital information method in general satellite dmb mode.
Fig. 2 is the receiving unit integration map of received signal in the satellite dmb mode among the present invention.
Fig. 3 is the system combination figure of the allotter part scope of digital satellite broadcast receiver among the present invention.
Fig. 4 is in the present invention for the flow chart of control audio/vision signal method is described.
The symbol description of major part in the accompanying drawing:
1: antenna 10: fore-end
20: decoder 21: demultplexer
23: decoder 25: the decryption of video decoded portion
26: audio frequency deciphering decoded portion 27: digital I/O
Embodiment
Embodiment to digital satellite broadcast receiver of the present invention and information processing method thereof is elaborated below with reference to accompanying drawings.
Fig. 2 is the receiving unit integration map of received signal in the satellite dmb mode among the present invention.
As shown in Figure 2, receive the data message that comes from satellite transmission, its broadcast be made of following eight parts for the receiving unit of image:
The one, the antenna of received signal (ANT) 1;
The 2nd, be the fore-end 10 of transport stream signals with the programme information conversion of signals that receives from above-mentioned antenna 1; The 3rd, for from said front part 10, being converted into the signal that transmits stream, according to being the decoder 20 that paid service or free service can be cancelled cryptographic key (de-cramble);
The 4th, be the allotter part (DEMUX) 21 of audio signal, vision signal and information signal with the Signal Separation of in above-mentioned decoder 20, cancelling;
The 5th, with the decoder 23 of the information signal deciphering that from above-mentioned allotter part 21, separates;
The 6th, the audio frequency deciphering decoded portion 26 of the audio signal deciphering that from above-mentioned allotter part 21, separates;
The 7th, the decryption of video decoded portion 25 of the vision signal deciphering that from above-mentioned allotter part 21, separates;
The 8th, with the numeral output/importation (digital I/O) 27 of exporting at a high speed/importing from the data-signal of above-mentioned allotter part 21.
Said front part 10 is made of following three parts:
The one, the signal that receives from antenna is reduced into the frequency converter 10a that sends front signal from transmitter;
The 2nd, the signal of frequency converter 10a reduction is reduced to the CDM demodulator 10b of TV signal according to the QPSK mode;
The 3rd, the signal of CDM demodulator 10b demodulation is reduced to the decoder 10c that transmits stream (Transport Stream) signal.
Its operation principle of receiving unit with above-mentioned formation is as follows.
At first, the signal that receives from above-mentioned antenna 1 transmits to decoder 20 be transformed to transport stream signals among frequency converter 10a, the CDM demodulator 10b of fore-end 10 and decoder 10c after.
The signal that transmits to above-mentioned decoder 20 is when satellite channel is channel available for free, though do not need decoding, but when satellite channel is charging channel, scramble (scramble) mpeg signal is decrypted being commonly referred on the scramble card of pcmcia card, just can receive broadcasting, so carry out scramble according to the difference of channel by charge.
The operation of decoding scrambling signal in above-mentioned decoder 20 is divided into audio signal, vision signal and information signal with above-mentioned transport stream signals in above-mentioned allotter part 21 after.
In above-mentioned decoder 23, will represent to decode from the header message of above-mentioned transport stream signals reception information characteristic, behind separation and the common PSI/SI that decodes (Program Specific Information/ServiceInformation), use control signal that this decrypts information is decoded as audio signal, vision signal.
Above-mentioned PSI information (program managing detailed catalogue) comprises following four parts:
The one, specify and transmit relevant broadcast program PAT (Program Map Table: (the Packet Identification: (the Program AssociationTable: the program joint list) of PAT identification of data packets) of the transmission stream packets PID program Figure List);
The 2nd, PMT (the Program Map Table) information of specifying the transmission stream packets PID that transmits each code signal that constitutes broadcast program;
The 3rd, expression limits CAT (the Condition Access Table: control access tabulation) information of relation between receive mode and the EMM-S stream;
The 4th, represent the NIT information of relevant transmission information and broadcast service information transfer system.
In addition, SI information (information on services) is made of following components:
The one, the relevant SDT information of weaving into the channel information technology of expression; The 2nd, EIT (p/f) information that constitutes with defined present or later action message, time started information, content information in the service, the EIT that expression transmits the service broadcast message of definition in the stream (Event Information Table: the object information tabulation) information, have the broadcasting station information indicating, about TOT information of BIT information, express time and the date and time information of the information list that respectively transmits variable of SI and PMT or the like.
In addition, above-mentioned allotter part 21 is decoded audio signal after transport stream signals is separated into audio signal, vision signal respectively in voice codec part 26, and vision signal is also exported at the picture decoding partial decoding of h.
In addition, in above-mentioned data output/importation 27, data-signal is imported at a high speed in the above-mentioned allotter part 21, and is controlled, or from allotter part 21 direct outputting data signals.
The PSI/SI information of the transport stream signals of separating from the allotter part 20 of aforesaid satellite dmb receiving unit decode in decoder 23, during the decoded output of Voice ﹠ Video signal, when controls, and how to export.
The PSI/SI information of decoding in above-mentioned decoder has unique PID according to separately content, carries out multichannel according to identical therewith PID in allotter part and distributes.That is, PSI/SI periodically repeatedly and transmit.
Flow because handling continuously, so its function is occupied important position in system in the transmission that above-mentioned allotter part is handled.
Particularly, in the present invention, when the audio/video signal coding is transmitted, will add in the PSI/SI information for playing needed broadcast bitrate information of each programme information and play buffering temporal information.
In addition, after the PSI/SI information in the programme information that separate, the extraction receiving unit receives, when it is decoded, utilize and obtain the control buffer size, utilize this numerical value audio/video when playing, just can continually to play about the broadcast bitrate information and the play buffering temporal information of each programme information.
Promptly, from the broadcast bitrate information of the audio signal of each program and vision signal and buffering temporal information obtain can normal play the buffering numerical values recited, carry out buffered after reaching the buffering numerical values recited of obtaining, because reach can audio plays/vision signal buffering numerical value, so above-mentioned audio/video signal just can be play incessantly.
Fig. 3 is the system combination figure of the allotter part scope of digital satellite broadcast receiver among the present invention.
As shown in Figure 3, marked in detail among the figure and to have sent satellite to after programme information that broadcasting office makes is encoded, receiving unit receives the process of the programme information of returning from satellite transmission.
After the programme information that above-mentioned receiving unit receives is converted in fore-end shown in Figure 2 and transmits stream, send to according to each programme variety separate and the carrying out of extracting minute with changing the allotter part (DEMUX:21) that (demultiplexing) handles.
If extract above-mentioned allotter part 21 minutes with audio signal, vision signal and the PSI/SI information of changing processing, transmit and decode to each audio/video packet decoder 31 corresponding and PSI/SI packet decoder 35 with it.
This system is made of following four parts:
The one, the audio/video buffer 32 that after the audio signal of above-mentioned audio/video packet decoder 31 decodings and vision signal, cushions;
The 2nd, from comprise above-mentioned allotter part 21 minutes with the PSI/SI information of the program managing detailed catalogue of audio frequency (Audio) signal of changing, vision signal (Video) and play bitrate information and buffer time information obtain audio/video (A/V) system controller 36 of control buffering numerical values recited;
The 3rd, utilize the control buffer size from above-mentioned audio-frequency/video frequency system controller 36, obtain, control the buffer control unit 38 of buffer size of the audio/video signal (Audio/Video:AV) of above-mentioned audio/video buffer (buffer) 32 bufferings;
The 4th, according to the control of above-mentioned buffer control unit 38, play the codec (A/Vcodec) of the audio/video signal of above-mentioned audio/video buffer 32 buffered: 33.
In said system, above-mentioned allotter part 21 is when carrying out decoding processing to the PSI/SI information of separating, above-mentioned buffer control unit 38 and audio-frequency/video frequency system controller (controller): 36) will add on the above-mentioned programme information respectively play bit rate (bitrate) information and the play buffering temporal information is compared, regulate the buffering capacity of above-mentioned audio/video buffer 32.
Identical therewith, the buffer size that above-mentioned audio-frequency/video frequency system controller 36 and above-mentioned buffer control unit 38 will be controlled the audio/video signal of buffer size and above-mentioned audio/video buffer 32 buffered compares, regulate the buffering capacity of audio signal and vision signal with this, Voice ﹠ Video just can continually have been play like this.
Promptly, audio signal by decoding and vision signal when playing bit rate and the time of buffering, obtain the controller that is fit to play and cushion numerical value, with this numerical value is standard, when the buffer size of above-mentioned audio/video buffer 32 buffered is the controller buffer size, because can play, so Voice ﹠ Video just can continually have been play.
In general, because according to the kind difference of program, the play buffering size of audio signal and vision signal has nothing in common with each other, so broadcast bitrate information that replenishes on the PSI/SI of program information and buffering temporal information also have nothing in common with each other.
Therefore, when playing after extraction audio signal, vision signal and the PSI/SI information, the audio signal of broadcast and the broadcast bit rate and the buffering time of vision signal are multiplied each other, obtain buffer size (buffer size).
Afterwards, above-mentioned buffer control unit 38 is a standard with above-mentioned control buffer size, controls above-mentioned buffer 32 and carries out the audio signal of buffered and the buffer size of vision signal.
Like this, in the present invention, kind difference according to each program, after obtaining the controller buffer size from PSI/SI information respectively, utilize this numerical value to regulate the audio signal of above-mentioned buffer 32 and the buffer size of vision signal, audio signal and vision signal just can continually have been play like this.
Fig. 4 is in the present invention for the flow chart of control audio/vision signal method is described.
As shown in Figure 4, the programme information conversion of signals that will receive from satellite is to transmit after the stream (TransportStream:TS), transmission is spread deliver to allotter part (DEMUX).
S301, above-mentioned demultplexer (Demux) part is carried out branch with changing processing, separates, extracts the audio signal, vision signal and the PSI/SI information that comprise above-mentioned transmission stream.
S302, the PSI/SI information list that extracts from above-mentioned allotter part obtain the audio signal of broadcast and broadcast bit rate (Bitrate) information and the buffering temporal information of vision signal.
S303 multiplies each other resulting above-mentioned broadcast bitrate information and buffering temporal information, and the audio-frequency/video frequency system controller is obtained the size of buffer control unit control buffering.The size of buffer control unit control buffering can be reconciled the audio signal of audio/video buffer playout and the buffer size of vision signal.
At this moment S304, after decoded device decoding, to it carries out buffered playing anterior bumper from above-mentioned allotter part separation and Extraction audio signal and vision signal.
S305, if audio signal and the vision signal play have been carried out buffered by audio/video buffer same as described above, size with above-mentioned buffer control unit control buffering is a standard, whether above-mentioned audio-frequency/video frequency system controller and buffering controller are compared the audio signal that cushions in the above-mentioned buffer and the buffer size of vision signal, control it and play.
S306, the audio signal that above-mentioned buffer control unit control buffer size is handled than the buffer buffers of carrying out above-mentioned broadcast and the buffering of vision signal hour, send the audio signal and the vision signal of above-mentioned buffered to codec (Codec), playing audio signal and vision signal.(S305，S306)
If, when the audio signal that the size of above-mentioned buffer control unit control buffering is handled than the buffer buffers of carrying out above-mentioned broadcast and the buffering of vision signal are big, because can't play continuously, so the Voice ﹠ Video signal that will wait until above-mentioned buffering in above-mentioned steps S304 cushions when big than above-mentioned buffer control unit, the buffering of above-mentioned audio/video signal just can be proceeded.
After this, when the buffer size of the audio/video signal of above-mentioned buffering was bigger than the buffering of above-mentioned buffer control unit control, buffer control unit was controlled above-mentioned audio/video signal, and codec just can audio plays/vision signal.
Therefore, in the present invention, for playing above-mentioned audio/video signal, when the buffer size of buffered has the big numerical value of buffering than above-mentioned buffer control unit control, because can audio plays and vision signal, so above-mentioned audio/video signal can continually be play.
In addition, in many broadcasting channels of in a receiving system, being play, even the program that certain broadcasting channel is play is at audio plays/video fast, and at the program of certain cannel broadcast at the slow play audio/video, also normal play Voice ﹠ Video incessantly.
The present invention not only limits above example, the skilled staff that has an art technology fully can be in not departing from following claim scope the scope of the technology of the present invention thought, carry out various change and modification.But, those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claims of the present invention variation, the modification of the above embodiment.
Claims (8)
1, a kind of information processing method of digital satellite broadcast receiver is characterized in that comprising following six steps:
First step behind the programme information signal that receives, is converted into and transmits stream;
Second step is carried out branch with changing processing with above-mentioned transmission stream in allotter part, separates and extraction audio signal, vision signal and program managing detailed catalogue/information on services;
Third step obtains the broadcast bitrate information and the buffering temporal information of the audio signal/vision signal of corresponding each program unit from the program managing detailed catalogue of said extracted/information on services;
The 4th step, utilization is from the broadcast bitrate information and the buffering temporal information of the audio signal/vision signal of program managing detailed catalogue/information on services acquisition of said extracted, be the buffer size of control audio/video information, obtain the size of buffer control unit control buffering;
The 5th step is when playing above-mentioned audio/video signal and cushion, for the size of the buffering of controlling above-mentioned audio/video and the buffer control unit control buffering obtained compares mutually;
The 6th step, the size of above-mentioned buffer control unit control buffering is less than when carrying out the buffer size of the above-mentioned audio/video signal that above-mentioned broadcast cushions, send the audio/video signal of above-mentioned buffering to codec, audio plays and vision signal.
2, the information processing method of digital satellite broadcast receiver as claimed in claim 1 is characterized in that also comprising:
When the buffering of the above-mentioned audio/video signal that cushions than carrying out above-mentioned broadcast when the size of the buffering of above-mentioned controller buffer control is big, when the audio/video signal that need wait until above-mentioned buffering becomes also bigger than above-mentioned controller buffer, the step that the buffering of above-mentioned audio/video signal just can continue;
When the buffering of above-mentioned audio/video signal during greater than the buffering of above-mentioned controller buffer control big or small, the above-mentioned audio/video signal of above-mentioned buffering is sent to codec, carry out the step of audio plays and vision signal.
3, the information processing method of digital satellite broadcast receiver as claimed in claim 1 is characterized in that:
Above-mentioned programme information signal is being encoded when transmitting, on the audio frequency of corresponding programme variety and video information, replenishing the buffer time information when playing bitrate information and these information of broadcast.
4, the information processing method of digital satellite broadcast receiver as claimed in claim 1 is characterized in that:
When playing buffer size that above-mentioned audio/video signal cushions and have the big numerical value of buffering than above-mentioned buffer control unit control, because can audio plays/vision signal, so above-mentioned audio/video signal just can be play incessantly.
5, a kind of digital satellite broadcast receiver is characterized in that comprising following seven parts:
The one, the antenna of program receiving information signal;
The 2nd, the programme information conversion of signals that above-mentioned antenna is received is the fore-end of transport stream signals;
The 3rd, carry out branch with changing processing with in said front part, being converted into the signal that transmits stream, with the audio signal of corresponding each program, vision signal, allotter part that the program managing detailed catalogue/the information on services information signal separates and extracts;
The 4th, with the decoder of audio signal, vision signal and the program managing detailed catalogue/information on services signal decoding of the branch usefulnessization in the above-mentioned allotter part;
The 5th, the audio/video buffer that the audio signal and the vision signal of above-mentioned decoder decode are carried out buffered;
The 6th, the audio-frequency/video frequency system controller, it is from comprising that above-mentioned audio/video buffer carries out obtaining to play needed bitrate information and buffering temporal information the program managing detailed catalogue/information on services of the audio signal of buffered and vision signal, be the audio signal of controlling above-mentioned buffered and the buffer size of vision signal, it also obtains the numerical value of controller buffer size;
The 7th, according to the controller buffer magnitude numerical value that above-mentioned audio-frequency/video frequency system controller obtains, control the buffer control unit that above-mentioned audio/video buffer carries out buffer size.
6, digital satellite broadcast receiver as claimed in claim 5 is characterized in that also comprising:
According to the control of above-mentioned buffer control unit, play the codec that carries out the audio signal and the vision signal of buffered at above-mentioned audio/video buffer.
7, digital satellite broadcast receiver as claimed in claim 5 is characterized in that:
In above-mentioned audio-frequency/video frequency system controller, obtain buffer control unit and control above-mentioned audio/video bumper portion and carry out after the controller buffer size of the audio signal of buffered and vision signal, above-mentioned buffer control unit is that standard is controlled the buffer sizes that above-mentioned audio/video bumper portion is carried out buffered with this numerical value.
8, digital satellite broadcast receiver as claimed in claim 5 is characterized in that:
In above-mentioned buffer control unit, when playing above-mentioned audio signal and vision signal, the size of buffering is play the audio signal and the vision signal of above-mentioned buffered during greater than the buffering of controlling in the buffer control unit of obtaining big or small in above-mentioned codec in above-mentioned audio-frequency/video frequency system controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610026110 CN101064838A (en) | 2006-04-27 | 2006-04-27 | Digital satellite broadcast receiver and its information processing method |
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| CN 200610026110 CN101064838A (en) | 2006-04-27 | 2006-04-27 | Digital satellite broadcast receiver and its information processing method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010094234A1 (en) * | 2009-02-18 | 2010-08-26 | 腾讯科技（深圳）有限公司 | Audio/video data play control method and apparatus |
| CN102291404A (en) * | 2011-08-12 | 2011-12-21 | 苏州阔地网络科技有限公司 | Method, system and server for transmitting audio and video data |
| WO2020237569A1 (en) * | 2019-05-30 | 2020-12-03 | 深圳市大疆创新科技有限公司 | Method, device and system for processing audio data, and storage medium |
-
2006
- 2006-04-27 CN CN 200610026110 patent/CN101064838A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010094234A1 (en) * | 2009-02-18 | 2010-08-26 | 腾讯科技（深圳）有限公司 | Audio/video data play control method and apparatus |
| US8594184B2 (en) | 2009-02-18 | 2013-11-26 | Tencent Technology (Shenzhen) Company Limited | Method and apparatus for controlling video-audio data playing |
| CN102291404A (en) * | 2011-08-12 | 2011-12-21 | 苏州阔地网络科技有限公司 | Method, system and server for transmitting audio and video data |
| WO2020237569A1 (en) * | 2019-05-30 | 2020-12-03 | 深圳市大疆创新科技有限公司 | Method, device and system for processing audio data, and storage medium |
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