CN100542271C - Multiple stream decrypting and decoding system with and correlation technique - Google Patents
Multiple stream decrypting and decoding system with and correlation technique Download PDFInfo
- Publication number
- CN100542271C CN100542271C CNB2007101077335A CN200710107733A CN100542271C CN 100542271 C CN100542271 C CN 100542271C CN B2007101077335 A CNB2007101077335 A CN B2007101077335A CN 200710107733 A CN200710107733 A CN 200710107733A CN 100542271 C CN100542271 C CN 100542271C
- Authority
- CN
- China
- Prior art keywords
- transmission stream
- deciphering
- stream
- multiplexer
- order
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
A kind of multiple stream decrypting and decoding system with and correlation technique, this system comprises: the M multiplexer, in order to receiving at least one first transmission stream and one second transmission stream, and in order to export synthetic transmission stream; Multiple transmission stream deciphering card should synthesize transmission stream with output deciphering transmission stream in order to deciphering; The S multiplexer, in order to receiving from the deciphering transmission stream of this multiple transmission stream deciphering card and from the synthetic transmission stream of this M multiplexer, and this S multiplexer is more in order to export last synthetic transmission stream; And the M processor, should last synthetic transmission stream in order to receive and to decompose, and transmit a plurality of transmission streams of being decomposed corresponding news frame device to the transmission stream de-multiplexer.Multiple transmission stream deciphering of the present invention and decoding mechanism, can be under the situation that does not increase hardware complexity efficient execution decryption acts.
Description
Technical field
The present invention is relevant for the digital TV decoding system, be particularly to have the digital TV decoding system of multiple transmission stream deciphering card, be a kind of multiple stream decrypting and decoding system specifically with and correlation technique (MULTIPLE STREAM DECRYPTING AND DECODING SYSTEMSAND RELATED METHODS THEREOF).
Background technology
CableCard or allotment point deciphering card (Point of Decryption POD) in order to enable a cable, makes it can directly be connected to the television set security module, and box (set-topbox) on must the use machine.The CableCard utilization is deciphered the transmission stream that has received and is provided access with a high credibility to be connected with network to television set.Usually, CableCard can just only can handle deciphering or wherein a kind of transmission stream of decoding at one time in order to handle single crossfire.For example, in the specification of U.S. rule CardCARD interface 1.0, CableCard is implemented on the decoding or the deciphering of single crossfire.Yet in order to implement all digital functions, for example show another when record one crossfire, perhaps (picturein picture, PIP) pattern is so digital technology now needs the multiple stream card to the PIP function.In order to satisfy these demands, manufacturer has researched and developed a kind of multiple allotment point deciphering of deciphering multiple transmission stream (multiplepoint of decryption, M-POD) card, and be operable in single stream mode and multiple stream pattern.For example, in the specification of U.S. rule CableCARD interface 2.0, the M-POD card can receive and handle multiple transmission stream.Simultaneously, this kind specification can allow two-way function, for example metering paying (pay-per-view), random selection video system (Video On Demand) and electronic programming forms etc.
Therefore, need a kind of multiple transmission stream deciphering and decoding mechanism of novelty, with efficient execution decryption acts under the situation that does not increase hardware complexity.
Summary of the invention
Embodiments of the invention have disclosed a kind of multiple stream decrypting and decoding system.First embodiment of this system comprises: a M multiplexer (multiple transport stream multiplexer, M-Mux), and in order to receiving at least one first transmission stream and one second transmission stream, and in order to export a synthetic transmission stream; One multiple transmission stream deciphering card is coupled to this M multiplexer and should synthesizes transmission stream to export a deciphering transmission stream in order to deciphering; One S multiplexer (Source Multiplexer), be coupled to this multiple transmission stream deciphering card and this M multiplexer, in order to receiving from the deciphering transmission stream of this multiple transmission stream deciphering card and from the synthetic transmission stream of this M multiplexer, and this S multiplexer is more in order to export a last synthetic transmission stream; An and M processor (multiple transport stream processor, M-Processor), be coupled to this S multiplexer, be somebody's turn to do last synthetic transmission stream in order to receive and to decompose, and transmit a plurality of corresponding news frame devices that are decomposed to a transmission stream de-multiplexer.
System according to a second embodiment of the present invention comprises: a M multiplexer (multiple transportstream multiplexer, M-Mux), in order to receiving at least one first transmission stream and one second transmission stream, and select signal output one synthetic transmission stream according to one first; One multiple transmission stream deciphering card is coupled to this M multiplexer, should synthesize transmission stream to export a synthetic deciphering transmission stream in order to deciphering; One M processor (multiple transport stream processor, M-Processor), be coupled to this multiple transmission stream deciphering card, be somebody's turn to do the synthetic transmission stream of deciphering in order to receive, and select signal output and decomposition to decipher crossfire corresponding to one first deciphering crossfire of this first transmission stream or corresponding to one second of this second transmission stream according to one second; One the one S multiplexer (Source Multiplexer), be coupled to this first transmission stream and this M processor, in order to receiving this first transmission stream and this first deciphering crossfire, and select signal to export one first synthetic deciphering transmission stream to a corresponding news frame device according to one the 3rd; And one the 2nd S multiplexer, be coupled to this second transmission stream and this M processor, in order to receiving this second transmission stream and this second deciphering crossfire, and select signal to export one second synthetic deciphering transmission stream to a corresponding news frame device according to the 3rd.
The system of a third embodiment in accordance with the invention comprises: a M multiplexer (multiple transportstream multiplexer, M-Mux), in order to receiving at least one first transmission stream and one second transmission stream, and in order to export a synthetic transmission stream; One multiple transmission stream deciphering card is coupled to this M multiplexer, should synthesize transmission stream to export a synthetic deciphering transmission stream in order to deciphering; One the one M processor is coupled to this M multiplexer, should synthetic transmission stream in order to receive, and decompose and output corresponding to one first deciphering crossfire of this first transmission stream or corresponding to one second deciphering crossfire of this second transmission stream; And one the 2nd M processor, be coupled to this multiple transmission stream deciphering card, in order to receiving this deciphering transmission stream, and decompose and output is deciphered crossfire corresponding to one first deciphering crossfire of this first transmission stream or corresponding to one second of this second transmission stream.
And it is a kind of in order to set the method for a multiple stream decrypting and decoding system that the present invention also provides, and the method comprises: authenticate a multiple transmission stream deciphering card; Determine the frequency range restriction of Cable Card; Transmit a transmission stream by this system; Extract programme information from this transmission stream; Use this programme information so that this default pid filter is limited to reach frequency range; And enable this multiple transmission stream deciphering card.
Multiple transmission stream deciphering of the present invention and decoding mechanism, can be under the situation that does not increase hardware complexity efficient execution decryption acts.
Description of drawings
Fig. 1 has illustrated multiple transmission stream deciphering and the decoding system according to the first embodiment of the present invention.
Fig. 2 has illustrated multiple transmission stream deciphering and decoding system according to a second embodiment of the present invention.
Fig. 3 has illustrated the multiple transmission stream deciphering and the decoding system of a third embodiment in accordance with the invention.
Fig. 4 has illustrated the multiple transmission stream deciphering and the decoding system of a fourth embodiment in accordance with the invention.
Fig. 5 has illustrated the flow chart of the detailed step of the method according to this invention.
The primary clustering symbol description:
10,20,210,220,310,320,410,420: Network Interface Module
30,230,330,430:M multiplexer
35,235,335,435:PID filter
40,240,340,440: multiple transmission stream deciphering card
50,252,254,450:S multiplexer
60,260,360,460: de-multiplexer
65,265,365,367,465:M processor
72,74,272,274,372,374,376,378,472: news frame device
80,280,380,480: input buffer
85,285,385,485: section filter
90、290、390、490：CPU
100,200,300,400: multiple transmission stream deciphering and decoding system
Embodiment
Please refer to Fig. 1, Fig. 1 has illustrated multiple transmission stream deciphering and the decoding system 100 according to the first embodiment of the present invention, and system 100 comprises multiple transmission stream deciphering card 40.For simplified, system 100 has only illustrated Network Interface Module (network interfacemodule, NIM) 10,20 that two tuners add demodulator unit.Please be careful, this is not in order to limiting the present invention, and the quantity of the NIMs that connects is that capacity according to multiple transmission stream deciphering card 40 determines.Please be careful, in the narration down below, will use " CableCard " this title, it represents the brand name of an embodiment of multiple transmission stream deciphering card.Yet the present invention can use any any deciphering card of supporting multiple transmission stream deciphering card.
First Network Interface Module 10 and second Network Interface Module 20 are coupled to M multiplexer (Multiple Transport stream multiplexer) 30, in order to export the first transmission stream TS1 and the second transmission stream TS2 respectively.Two transmission stream TS1 and TS2 carry out the multiplex (MUX) in M multiplexer 30 and handle (multiplex), and add to comprise 12 byte information pre-stem (pre-header) (for example, debating of each transmission stream known number) to debate knowledge.Be transferred into CableCard 40 and S multiplexer (Source Multiplexer) 50 by the synthetic TS after multiplex's processing.Synthetic TS after the synthetic TS that has handled through the multiplex (MUX) that CableCard 40 will receive is decrypted and will deciphers is sent to S multiplexer 50.S multiplexer 50 is used to select the synthetic TS after original synthetic TS and the deciphering and exports one to de-multiplexer 60.One embodiment of de-multiplexer 60 can comprise M multiplexer 65, the first news frame devices (framer) 72, the second news frame device 74, input buffer 80, section filter (section filter) 85 and CPU (CPU) 90.CPU90,290,390 and 490 can be the transmission stream layer in the de-multiplexer 60, information packetize basic string fluid layer or basic string fluid layer processor perhaps can be the system processor of the outer entire chip of de-multiplexer 60 or the whole M PEG decoding system function with the control whole system.At this, M multiplexer 65 uses as the de-multiplexer that has single input and multiple output.When M processor 65 is separated the multiplex (MUX) and handled transmission stream and remove each pre-stem,, can judge according to ID appended in the pre-stem and TS by 50 outputs of S multiplexer must be gone into (frame in) which interrogates frame device by the news frame because each original TS comprises pre-stem.After transmission stream is interrogated frame device 72,74 news frames, be sent to input buffer 80, to be output to destination apparatus (for example a, Digital Television).In this example, the use of S multiplexer 50 has reduced the transmission stream number that is input to M processor 65, has therefore reduced the complexity of system's 100 assimilations.
Because CableCard 40 has a limited frequency range, system 100 according to the present invention also comprises PID (packet identification, packets of information identification) filter 35, in order to the data transfer rate of control from M multiplexer 30 to CableCard 40.At the beginning, transmission stream directly is transferred into CPU90 and extracts its sector table (section table).CPU90 determines needed PID then, and sets pid filter 35 according to this.This kind mode is specially adapted to use the system of many transmission streams.Under the prerequisite that does not change the advantage that has disclosed, the system 100 of Fig. 1 can be modified otherwise and present.Please refer to Fig. 2, Fig. 2 has illustrated multiple transmission stream deciphering and decoding system 200 according to a second embodiment of the present invention.As shown in Figure 2, the system among Fig. 2 200 comprises S multiplexer 252 and 254.
In this embodiment, the first transmission stream TS1 directly is transferred into a S multiplexer 252, and the second transmission stream TS2 directly is transferred into the 2nd S multiplexer 254.The first transmission stream TS1 and the second transmission stream TS2 also directly are transferred into and are transferred into CableCard240 after M multiplexer 230 carries out multiplex's processing and adds pre-stem.Yet the synthetic TS that is handled by the multiplex (MUX) directly is not transferred into M processor 265.Synthetic TS after the decrypted and multiplex (MUX) that M processor 265 only is received from CableCard 240 output handles, separate the multiplex (MUX) and handle decrypted and synthetic TS that the multiplex (MUX) handles and decompose and transmit the first deciphering TS to a S multiplexer 252, and the second deciphering TS to the, two S multiplexers 254.A S multiplexer 252 is selected one first TS that is handled by the multiplex (MUX) according to selection signal that CPU290 provided from a TS and the first deciphering TS then, and the 2nd S multiplexer 254 selects signal to select one second TS that is handled by the multiplex (MUX) from the 2nd TS and the second deciphering TS according to CPU290.CPU290 produces corresponding selection signal according to the use of CableCard.First TS that is handled by the multiplex (MUX) will be transferred into the first news frame device 272, and second TS that is handled by the multiplex (MUX) will be transferred into the second news frame device 274.It is noted that,, and be transmitted according to existing Moving Picture Experts Group-2 because the TS that each S multiplexer input is represented in the reverse of the use of extra S multiplexer and M processor and S multiplexer need a pre-stem.
Please refer to Fig. 3, Fig. 3 has illustrated the multiple transmission stream deciphering and the decoding system 300 of a third embodiment in accordance with the invention.System 300 utilizes an extra M processor to replace the function of S multiplexer.Note that this system 300 needs two extra news frame devices.As previously mentioned, the first transmission stream TS1 and the second transmission stream TS2 are transferred into M multiplexer 330, wherein TS1 and TS2 are handled output by the multiplex (MUX) and handle the back and add the synthetic TS of pre-stem through the multiplex (MUX), and should synthesize TS and be directly inputted into a M processor 365.Also be input to CableCard 340 deciphering through the synthetic TS after multiplex's processing, export the 2nd M processor 367 then to.The one M processor 365 separate the multiplex (MUX) handle the synthetic TS after being handled by the multiplex (MUX) and will decompose after TS be sent to the first news frame device 372 and second and interrogate frame device 374 (directly by Network Interface Module 310 and 320 transmission streams that received).The 2nd M processor 367 will separate the multiplex (MUX) handle the synthetic TS after being handled by the multiplex (MUX) and will decompose after TS be sent to the 3rd news frame device 376 and the 4th and interrogate frame device 378.The advantage of this embodiment is to comprise less multiplex (MUX)-separate multiplex's stage.
Please refer to Fig. 4, Fig. 4 has illustrated the multiple transmission stream deciphering and the decoding system 400 of a fourth embodiment in accordance with the invention.Except only comprising news frame device 472, system 400 is almost the same with system 100.When the output of S multiplexer 450 arrived M processor 465, each TS that is handled by the multiplex (MUX) comprised a pre-stem.News frame device 472 has a variable index, represents the action that it can support automatic network interface module 410 and 420 reception transmission stream T1 and T2 by changing index.M processor 465 receives TS from the S multiplexer, and the pre-stem of each TS is removed, and makes that each TS is the standard mpeg format.M processor 465 will be accompanied by TS and produce new index signal then, and it is according to last selected to be produced by the TS of news frame in news frame device 472.It is noted that the selection action of TS is controlled by CPU490.(for example interrogate frame device 72,74,272,274) by comparison with the news frame device among other embodiment, news frame device 472 is handled with fast speeds, for instance, and need the TS of processing behind two transmission stream multiplex (MUX)s with the processing speed of twice with prevention.
The present invention has also disclosed setting pid filter 35,235,335,435 to reduce the method that does not need frequency range.At the beginning, system 100,200,300 and 400 is by confirming whether CableCard 40,240,340 and 440 is placed into and to CableCard 40,240,340 and 440 authenticate.Then, transmission stream is directly from Network Interface Module 10,20, and 210,220,310,320,410,420 are transferred into input buffer 80,280,380,480.Then, utilize section filter 85,285,385,485 extract sector table, then its result are sent to CPU90,290,390,490.Information be it seems thus, CPU90, and 290,390,490 can know sign indicating number (package identifier) in order to judge that required packets of information is debated.CPU90,290,390,490 have known the frequency range restriction of the CableCard 40,240,340 that is placed into and 440.If frequency range be not enough to support institute must PID, CPU90,290,390,490 will more utilize PID to set pid filter 35,235,335,435 and minimizing signal frequency range.In this stage, system 100,200,300,400 can enable CableCard 40,240,340,440.
Fig. 5 has illustrated the flow chart of the detailed step of the method according to this invention.Its step is as follows:
Step 500: judge whether CableCard certified? if, to step 504, if not, to step 502.
Step 502: the automatic network interface module receives transmission stream.
Step 504: determine the frequency range restriction of CableCard.
Step 506: transmit a transmission stream.
Step 508: extract the sector table of transmission stream, and resolve (parse) sector table and debate knowledge sign indicating number (PID) to obtain required program.
Step 510: frequency range be enough to support must PID? if, to step 514, if not, to step 512.
Step 512: PID is set to pid filter and to step 514.
Step 514: enable CableCard.
At the beginning, carry out the authentication (step 500) of CableCard.If CableCard is not certified, transmission stream is received (step 502) with the automatic network interface module.If CableCard is certified, then determine the frequency range (step 504) of CableCard.Then, transmission stream is transmitted (step 506), and sector table is extracted and resolves to obtain required program and debates and know sign indicating number (step 508).Whether the frequency range of then judging CableCard is enough to support required PID (step 510).If enough then enable CableCard (step 514).If not enough, PID will be set (step 512) in pid filter, then CableCard will be enabled (step 514).
S multiplexer in first, second and the 4th embodiment has not only reduced the number of the transmission stream that is input to the M processor, also from what person among the TS of source or CableCard will be shown in order to selecting.If CableCard is not placed into or not certified, the S multiplexer is selected one at least in the transmission stream of automatic network interface module from the beginning.In the 3rd embodiment, the use of two M processors has also reduced the flow on the single M processor.Disclosed multiple stream decrypting of the present invention and decoding system also use a pid filter, in order to the input and output of balance sysmte.Pid filter also can limit the total amount of the data that are transferred into CableCard, can be maintained at high levels with this processing speed that guarantees system.And system can use an authentication procedure to set pid filter.
In brief, the disclosed system of the present invention can support multiple transmission stream deciphering under the situation of the hardware complexity that reduces existing structure, and wherein existing structure is followed multiple stream CableCard specification (for example specification of CableCard interface 2.0).In addition, pid filter can avoid extra data to be transferred into CableCard.
The above only is preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (23)
1. multiple stream decrypting and decoding system is characterized in that described system comprises:
One M multiplexer, in order to receiving at least one first transmission stream and one second transmission stream, and in order to export a synthetic transmission stream;
One multiple transmission stream deciphering card is coupled to described M multiplexer in order to decipher described synthetic transmission stream to export a deciphering transmission stream;
One S multiplexer, be coupled to described multiple transmission stream deciphering card and described M multiplexer, block the described deciphering transmission stream of output and the described synthetic transmission stream of exporting from described M multiplexer in order to receive, and export a last synthetic transmission stream from described multiple transmission stream deciphering; And
One M processor is coupled to described S multiplexer, in order to receiving described last synthetic transmission stream, and transmits the news frame device of described last synthetic transmission stream to a correspondence.
2. multiple stream decrypting as claimed in claim 1 and decoding system is characterized in that, described M multiplexer comprises:
One pid filter is in order to select to be output the certain content to described multiple transmission stream deciphering card.
3. multiple stream decrypting as claimed in claim 1 and decoding system is characterized in that, described system also comprises:
One CPU is coupled to described M multiplexer, described S multiplexer and described M processor, in order to control the action of described M multiplexer, described S multiplexer and described M processor.
4. multiple stream decrypting as claimed in claim 3 and decoding system, it is characterized in that, described CPU more authenticates described multiple transmission stream deciphering card, and described CPU transmits one first selection signal, one second selection signal, one the 3rd selection signal and a decision signal according to authentication result.
5. multiple stream decrypting as claimed in claim 4 and decoding system, it is characterized in that, described M processor is coupled to a plurality of news frame devices, wherein each news frame utensil has a specific fixed indices, in order to according to a particular source described last synthetic transmission stream being interrogated frame, and described M processor selects signal to select one to cushion the described transmission stream that synthesizes at last in described a plurality of news frame devices according to the described the 3rd.
6. multiple stream decrypting as claimed in claim 4 and decoding system, it is characterized in that, described M processor is coupled to the news frame device of described correspondence, and described news frame utensil has a variable index, in order to according to a plurality of data sources described last synthetic transmission stream is interrogated frame.
7. multiple stream decrypting as claimed in claim 6 and decoding system is characterized in that, described M processor selects signal to be controlled by the described the 3rd, to produce a stem of described last synthetic transmission stream according to a corresponding data source.
8. multiple stream decrypting as claimed in claim 1 and decoding system is characterized in that, described multiple transmission stream deciphering card is followed the specification of CableCard interface 2.0.
9. multiple stream decrypting and decoding system is characterized in that described system comprises:
One M multiplexer in order to receiving at least one first transmission stream and one second transmission stream, and is selected signal output one synthetic transmission stream according to one first;
One multiple transmission stream deciphering card is coupled to described M multiplexer, in order to decipher described synthetic transmission stream to export a deciphering transmission stream;
One M processor, be coupled to described multiple transmission stream deciphering card, in order to receiving described deciphering transmission stream, and select signal output corresponding to one first deciphering crossfire of described first transmission stream or corresponding to one second deciphering crossfire of described second transmission stream according to one second;
One the one S multiplexer, be coupled to described first transmission stream and described M processor, decipher crossfire in order to receive described first transmission stream and described first, and select signal to export one first synthetic deciphering transmission stream to a corresponding frame device of interrogating according to one the 3rd; And
One the 2nd S multiplexer, be coupled to described second transmission stream and described M processor, decipher crossfire in order to receive described second transmission stream and described second, and select signal to export one second synthetic deciphering transmission stream to a corresponding frame device of interrogating according to the described the 3rd.
10. multiple stream decrypting as claimed in claim 9 and decoding system is characterized in that, described M multiplexer comprises:
One pid filter is in order to select to be output the certain content to described multiple transmission stream deciphering card.
11. multiple stream decrypting as claimed in claim 9 and decoding system is characterized in that, described system also comprises:
One CPU is coupled to described M multiplexer, a described S multiplexer and described the 2nd S multiplexer and described M processor, selects signal, described second to select signal, the described the 3rd to select a signal and a decision signal in order to transmit described first.
12. multiple stream decrypting as claimed in claim 11 and decoding system, it is characterized in that, described CPU more authenticates described multiple transmission stream deciphering card, and described CPU transmits the described first selection signal, the described second selection signal, described the 3rd selection signal and described decision signal according to authentication result.
13. multiple stream decrypting as claimed in claim 9 and decoding system is characterized in that, described multiple transmission stream deciphering card is followed the specification of CableCard interface 2.0.
14. multiple stream decrypting and decoding system is characterized in that described system comprises:
One M multiplexer, in order to receiving at least one first transmission stream and one second transmission stream, and in order to export a synthetic transmission stream;
One multiple transmission stream deciphering card is coupled to described M multiplexer, in order to decipher described synthetic transmission stream to export a deciphering transmission stream;
One the one M processor is coupled to described M multiplexer, and in order to receiving described synthetic transmission stream, and output is corresponding to one first deciphering crossfire of described first transmission stream or corresponding to one second deciphering crossfire of described second transmission stream; And
One the 2nd M processor is coupled to described multiple transmission stream deciphering card, and in order to receiving described deciphering transmission stream, and output is corresponding to one first deciphering crossfire of described first transmission stream or corresponding to one second deciphering crossfire of described second transmission stream.
15. multiple stream decrypting as claimed in claim 14 and decoding system is characterized in that, described M multiplexer comprises:
One pid filter is in order to select to be output the certain content to described multiple transmission stream deciphering card.
16. multiple stream decrypting as claimed in claim 14 and decoding system is characterized in that, described system also comprises:
One CPU is coupled to described M multiplexer, the described first and second S multiplexers and M processor, in order to control described M multiplexer, a described M processor and described the 2nd M processor.
17. multiple stream decrypting as claimed in claim 16 and decoding system, it is characterized in that, a described M processor and described the 2nd M processor are coupled to a plurality of news frame devices, wherein each news frame utensil has a particular fixed index that corresponds to a particular source, and which news frame device is described central processing unit controls use.
18. multiple stream decrypting as claimed in claim 14 and decoding system is characterized in that, described multiple transmission stream deciphering card is followed the specification of CableCard interface 2.0.
19. one kind in order to set the method as claim 1,9 or 14 described multiple stream decryptings and decoding system, it is characterized in that described method comprises following steps:
Authenticate a multiple transmission stream deciphering card;
Transmit a transmission stream by described system;
Extract programme information from described transmission stream;
Use described programme information so that described default one frequency range is limited; And
Enable described multiple transmission stream deciphering card.
20. method as claimed in claim 19 is characterized in that, the step of extracting program data from described transmission stream comprises:
Extract sector table from described transmission stream; And
Judgement is from the packets of information identification code of described extraction sector table.
21. method as claimed in claim 20 is characterized in that, the step that authenticates described multiple transmission stream deciphering card comprises:
Judge whether described multiple transmission stream deciphering card is placed into; And
Judge the frequency range restriction of described multiple transmission stream deciphering card.
22. method as claimed in claim 21 is characterized in that, described method also comprises:
One pid filter is provided, wherein uses described programme information to comprise the frequency range of setting described pid filter with step to the described frequency range restriction of described default.
23. method as claimed in claim 19 is characterized in that, described multiple transmission stream deciphering card is followed the specification of CableCard interface 2.0.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US74689306P | 2006-05-10 | 2006-05-10 | |
| US60/746,893 | 2006-05-10 | ||
| US11/538,059 | 2006-10-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101072322A CN101072322A (en) | 2007-11-14 |
| CN100542271C true CN100542271C (en) | 2009-09-16 |
Family
ID=38899285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101077335A Active CN100542271C (en) | 2006-05-10 | 2007-04-28 | Multiple stream decrypting and decoding system with and correlation technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100542271C (en) |
-
2007
- 2007-04-28 CN CNB2007101077335A patent/CN100542271C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101072322A (en) | 2007-11-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6963590B1 (en) | Apparatus for delivery of multiple media data streams, and method therefor | |
| RU2345401C2 (en) | Universal two-way consecutive interface of data transmission and data transmission method | |
| KR100466237B1 (en) | Method and system for converting protocol of digital broadcasting system | |
| US6628891B1 (en) | Signal filtering mechanism for a multi-purpose digital television receiver | |
| US6970482B2 (en) | Apparatus and method for demultiplexing of transport stream | |
| CN101034972B (en) | Method and system providing scrambled content | |
| CN100387055C (en) | Receiver | |
| CN101355640A (en) | Multi-display digital television set-top box | |
| CN101416483A (en) | Transport stream dejittering | |
| EP1243130B1 (en) | Digital television methods and apparatus | |
| JP4964467B2 (en) | Information processing apparatus, information processing method, program, data structure, and recording medium | |
| KR20010050669A (en) | Data processing device, its method and recording medium | |
| US8892888B2 (en) | Multiple stream decrypting and decoding systems and related methods thereof | |
| WO2003058950A1 (en) | Method and apparatus for simultaneously decrypting multiple services received on separate multiplexed transport streams | |
| CN102611916A (en) | Digital video apparatus for multiplexing single program transport streams into a multiple program transport stream | |
| CN201298872Y (en) | Multi-display digital TV set-top box | |
| CN100542271C (en) | Multiple stream decrypting and decoding system with and correlation technique | |
| WO2001037562A1 (en) | Adaptive trans-scrambling mechanism for digital television multiple data transport system | |
| CN101489095A (en) | Conditional access system | |
| CN101217661A (en) | Inter-network packet modifier and related method thereof | |
| KR100791175B1 (en) | Reservation recording method for series of broadcasting program | |
| CN102326399A (en) | Method and apparatus for secure distribution of audiovisual data encapsulated according to a plurality of transport protocols | |
| WO2019219056A1 (en) | Ts processing method and device | |
| CN101742169B (en) | Digital mode rolling subtitles system and method | |
| JPWO2014057956A1 (en) | Electronic device, composite stream transmission method and program |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |