CN104798378A - Digital broadcast reception device and digital broadcast reception method - Google Patents
Digital broadcast reception device and digital broadcast reception method Download PDFInfo
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- CN104798378A CN104798378A CN201280077147.XA CN201280077147A CN104798378A CN 104798378 A CN104798378 A CN 104798378A CN 201280077147 A CN201280077147 A CN 201280077147A CN 104798378 A CN104798378 A CN 104798378A
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- 238000000034 method Methods 0.000 title claims description 24
- 230000006837 decompression Effects 0.000 claims description 36
- 101100075513 Oryza sativa subsp. japonica LSI3 gene Proteins 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 5
- 239000013589 supplement Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000005236 sound signal Effects 0.000 description 2
- 230000002123 temporal effect Effects 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
- H04N21/41422—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance located in transportation means, e.g. personal vehicle
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4344—Remultiplexing of multiplex streams, e.g. by modifying time stamps or remapping the packet identifiers
Abstract
When a digital data stream is determined to have a format other than the MPEG2-TS format, MPEG2-TS header information is added to the digital data stream so that the digital data stream will be considered to have the MPEG2-TS format on the basis of the header information and content data that has been compressed in the digital data stream is decompressed.
Description
Technical field
The present invention relates to digital broacast receiver and the digital broadcast receiving method of receiving digital broadcast, wherein, described digital broadcasting flows through modulation by the numerical data of such as MPEG (Moving Picture Coding Experts Group: dynamic image expert group) 2-TS (Transport Stream: transmission class) form and form in addition thereof and obtains.
Background technology
Such as, following technology is proposed: in order to the MPEG2-PS recorded in CD (Program Stream: program stream) is transferred to external equipment via IEEE1394 interface, and convert MPEG2-PS the MPEG2-TS of IEEE1394 defined in patent documentation 1.
In addition, in patent documentation 1, for the object easily converting MPEG2-TS from MPEG2-PS to, and the temporal information of MPEG2-PS is replaced as the temporal information of the conversion considered to MPEG2-TS, and is recorded in CD.
Prior art document
Patent documentation
Patent documentation 1: No. 2004/030358th, International Publication
Summary of the invention
Invent technical problem to be solved
In prior art representated by patent documentation 1, change data flow itself originally.Therefore, cannot change the media of the data volume of the script sent from broadcasting station like that for data broadcast, said method is invalid.
In addition, also have the digital broacast receiver receiving following digital broadcasting, this digital broadcasting obtains after the digit data stream of the forms such as the GSE of the such as European DVB-T2 (Digital VideoBroadcasting Terrestrial2: second generation Digital European ground TV broadcast transmission standard) as other form except MPEG2-TS form (Generic Stream Encapsulation: general flow encapsulates) or GCS (Generic ContinuousStream: general Continuous Flow) is modulated.
In above-mentioned receiving system, respectively digit data stream was processed to often kind of form in the past, therefore the interface between broadcast wave demodulation LSI and video/audio decompression LSI is needed for the form of often kind of digit data stream, wherein, described broadcast wave demodulation LSI be used for according to the Received signal strength of digital broadcasting to digital data stream carry out demodulation, described video/audio decompression LSI is used for being compressed into the video of digit data stream, the content-data of audio frequency decompresses.
Such as, as the interface between broadcast wave demodulation LSI and video/audio decompression LSI, need the serial communication terminal of the form such as terminal and GSE of MPEG2-TS form.Therefore, the circuit of receiving system becomes complicated, cost increase.
In addition, also consider that the format conversion beyond by specific format becomes specific form.But, converting in the structure of specific format completely, same as described above, probably cause circuit to become complicated, cost increase.
In addition, in digital broacast receiver, owing to changing the data flow of broadcast source as described above, therefore cannot be suitable for the technology changing data flow originally as patent documentation 1, cannot solve the problem.
The present invention completes to solve the problem, its object is to provide the digital broadcast receiving method in a kind of digital broacast receiver and this device, the digit data stream beyond specific format can be regarded as specific format to process with easy structure.
The technical scheme that technical solution problem adopts
Digital broacast receiver involved in the present invention is the digital broacast receiver of the digital broadcasting obtained after the numerical data of certain form received in specific format and form in addition flows through modulation, it is characterized in that, comprising:
Demodulation section, this demodulation section according to the Received signal strength of digital broadcasting to digital data stream carry out demodulation;
Judging part, the form of this judging part to the digit data stream after demodulation section demodulation judges;
Information appendix, this information appendix when judging part is judged as YES beyond specific format, to the additional information of the digit data stream additional representation specific format of this form; And
Decompression portion, this decompression portion is when have input the digit data stream beyond specific format, and regarding as based on additional information is specific format, decompresses to the content-data being compressed in this digit data stream.
Invention effect
According to the present invention, there is following effect: the digit data stream beyond specific format can be regarded as specific format to process with easy structure.
Accompanying drawing explanation
Fig. 1 is the block diagram of the structure of the digital broacast receiver represented involved by embodiments of the present invention 1.
Fig. 2 is the flow chart of the digital broadcast receiving method represented involved by execution mode 1.
Fig. 3 is the figure of the analog format conversion illustrated in execution mode 1.
Fig. 4 is the block diagram of the structure of the digital broacast receiver represented involved by embodiments of the present invention 2.
Fig. 5 is the flow chart of the digital broadcast receiving method represented involved by execution mode 2.
Fig. 6 is the figure of the analog format conversion illustrated in execution mode 2.
Embodiment
Below, in order to illustrate in greater detail the present invention, with reference to the accompanying drawings, be described for implementing mode of the present invention.
Execution mode 1.
Digital broacast receiver generally comprises broadcast wave demodulation LSI and video/audio decompression LSI and forms, wherein, described broadcast wave demodulation LSI is used for carrying out demodulation to the digit data stream of the Received signal strength being modulated into digital broadcasting, and described video/audio decompression LSI is used for being compressed into the video of digit data stream, the content-data of audio frequency decompresses.
In addition, in European DVB-T2, except MPEG2-TS, also transformat is different from the data of GSE or GCS of MPEG2-TS etc. simultaneously sometimes.
In existing digital broacast receiver, for the digit data stream beyond MPEG2-TS form, between broadcast wave demodulation LSI and video/audio decompression LSI, use the serial communication interfaces such as SPI (Serial PeripheralInterface: Serial Peripheral Interface (SPI)).
On the other hand, MPEG2-TS is mainly for the digital broadcasting transmitting multiple program, and the input interface of MPEG2-TS mode is set up in general digital broacast receiver.
But the serial communication interfaces such as SPI are not equipped on the general digital broacast receiver preferring MPEG2-TS mode.
Therefore, in the past, when processing MPEG2-TS form and form in addition, needing to carry the serial communication interfaces such as SPI using as the interface between broadcast wave demodulation LSI and video/audio decompression LSI, the low cost LSI of the interface only having MPEG2-TS cannot be used.
Therefore, this digit data stream by the additional information to the digit data stream additional representation specific format beyond the specific formats such as MPEG2-TS, thus is regarded as specific format to process by the present invention.
Thus, the LSI of the simple and easy of the interface only with specific format and low cost can be used.Below, the digital broacast receiver involved by execution mode 1 is described.
Fig. 1 is the block diagram of the structure of the digital broacast receiver represented involved by embodiments of the present invention 1.Digital broacast receiver shown in Fig. 1 is the digital broacast receiver of the digital broadcasting obtained after the numerical data of certain form received in specific format and form in addition flows through modulation.Herein, as the compression transmission means of video and audio frequency, using the MPEG2-TS form of widely used MPEG2 system in digital broadcasting. as specific format.In addition, as form in addition, for the form of the GSE data flow of European DVB-T2.
In addition, the digital broacast receiver shown in Fig. 1 possesses antenna 1, tuner section 2, broadcast wave demodulation LSI3 and video/audio decompression LSI4 and forms.
Tuner section 2 receives the digital broadcasting wave of tuned frequency via antenna 1, and converts thereof into intermediate frequency signal.
Broadcast wave demodulation LSI3 carrys out stream to digital data according to the Received signal strength being converted to the digital broadcasting wave after intermediate frequency signal by tuner section 2 to carry out the LSI of demodulation, as its functional structure, possess broadcast wave demodulation section 30, data flow kind judging part 31, export selection portion 32 and MPEG2-TS heading message appendix 33.
Broadcast wave demodulation section 30 is that the output signal (intermediate frequency signal) according to tuner section 2 is carried out stream to digital data and carried out the demodulation section of demodulation.
Data flow kind judging part 31 is the judging parts judged data output form and the form of the digit data stream after broadcast wave demodulation section 30 demodulation.This data flow kind judging part 31 judge from the digit data stream of Received signal strength after demodulation be MPEG2-TS form or form in addition.
Exporting selection portion 32 is the output selection portions selected the numerical data that should export video/audio decompression LSI4 to and it is exported to video/audio decompression LSI4 via MPEG2-TS terminal 34.
In addition, exporting selection portion 32 when exporting the digit data stream beyond MPEG2-TS form, selecting the digit data stream that addition of above-mentioned heading message, and it can be used as the data flow of MPEG2-TS form to export.
Thus, the interface between broadcast wave demodulation LSI3 and video/audio decompression LSI4 can be only set to MPEG2-TS terminal 34 by the present invention.
MPEG2-TS heading message appendix 33 is the information appendix of the digit data stream of the form that data flow kind judging part 31 is judged as YES beyond MPEG2-TS form being added to MPEG2-TS heading message.In addition, heading message is the heading message with the structure corresponding with MPEG2-TS form.Such as, heading message comprise the head of the expression MPEG2-TS packet in the heading message of common MPEG2-TS sync byte, represent the attribute of the individual data streams of MPEG2-TS packet PID (Program ID: program identifier) and form for checking in MPEG2-TS packet the touring counter that whether has loss.
In addition, data flow kind judging part 31, output selection portion 32 and MPEG2-TS heading message appendix 33 also can be formed respectively as the special circuit in broadcast wave demodulation LSI3, also can by being realized in the form of software by the microprocessor executive program of broadcast wave demodulation LSI3.
Video/audio decompression LSI4 is the decompression portion decompressed to the content-data of the video be compressed in inputted digit data stream, audio frequency.
In addition, video/audio decompression LSI4 is when inputting the digit data stream beyond MPEG2-TS form, and regarding as based on above-mentioned heading message is MPEG2-TS form, decompresses to the content-data be compressed in this digit data stream.
Below, action is described.
Fig. 2 is the flow chart of the digital broadcast receiving method represented involved by execution mode 1, according to the process of the data flow of daylight reason MPEG2-TS form and GSE form this figure.In addition, the structure of digital broacast receiver is with reference to Fig. 1.
First, tuner section 2 is utilized to convert the Received signal strength of the digital broadcasting wave received by antenna 1 to intermediate frequency signal.This intermediate frequency signal is inputed to broadcast wave demodulation LSI3.
In broadcast wave demodulation LSI3, broadcast wave demodulation section 30 according to intermediate frequency signal to digital data stream carry out demodulation.
Data flow kind judging part 31 judges whether the digit data stream after by broadcast wave demodulation section 30 demodulation is MPEG2-TS form (step ST1).Such as, by confirming the heading message that data flow comprises, thus judgement is the form of MPEG2-TS form or GSE data flow.
When through the digit data stream of demodulation is MPEG2-TS form (step ST1: yes), this digit data stream exports to and exports selection portion 32 by data flow kind judging part 31.
On the other hand, when not being MPEG2-TS form (step ST1: no), data flow kind judging part 31 exports this digit data stream to MPEG2-TS heading message appendix 33.
As shown in Figure 3, MPEG2-TS heading message appendix 33 adds MPEG2-TS heading message (step ST2) to the digit data stream be judged as YES beyond MPEG2-TS, and is exported to output selection portion 32.
Fig. 3 (a) shows the frame structure of DVB-T2.As shown in Fig. 3 (a), GSE data flow by GSE title and GSE data field multiplexing in the data field of base band (BB) frame.
MPEG2-TS heading message appendix 33 is as shown in Fig. 3 (b), by the heading message (TS title) of MPEG2-TS and additional information (Additonal Info) being inserted the head (before GSE title) of GSE data flow, thus rebuild the simulation MPEG2-TS packet of 188 byte unit.Thus, the data flow beyond MPEG2-TS form also can process as MPEG2-TS.
The heading message (TS title) of MPEG2-TS is the information comprising above-mentioned sync byte, PID, touring counter.
In addition, additional information comprises the information of the form representing original data, represents the information of the information of original data being carried out the position split.
In addition, in the example of Fig. 3 (b), show and TS title and supplement information carried out the situation of adding as additional information, and if TS title is analyzed, then data flow can be processed as MPEG2-TS, therefore also only can add TS title.
Get back to the explanation of Fig. 2.
Export selection portion 32 (beyond input=MPEG2-TS) when being selected as object output by the digit data stream beyond MPEG2-TS form, the digit data stream that be addition of heading message by MPEG2-TS heading message appendix 33 is exported (step ST3) from MPEG2-TS terminal 34.
In addition, exporting selection portion 32 (input=MPEG2-TS) when being selected as object output by the digit data stream of MPEG2-TS form, directly this digit data stream being exported (step ST4) from MPEG2-TS terminal 34
Afterwards, video/audio decompression LSI4, when have input the digit data stream beyond MPEG2-TS form, analyzes the heading message being additional to this digit data stream, judges PID etc., this digit data stream is regarded as MPEG2-TS form, selects appropriate decompression circuit.This decompression circuit is utilized to decompress to vision signal, audio signal according to digit data stream.Vision signal, audio signal are exported to not shown rear class equipment and point out user.
In addition, such as when also processing GSE data flow except MPEG2-TS, video speech decompression LSI4 is based on the heading message of the digit data stream inputted via MPEG2-TS terminal 34, this data flow is regarded as MPEG2-TS form, after the heading message of GSE is analyzed as the data flow of GSE to carry out decompression.
Video/audio decompression LSI4 is when have input the digit data stream of MPEG2-TS form, original the comprised heading message of this data flow is analyzed, judge PID etc., this digit data stream is regarded as MPEG2-TS form, select appropriate decompression circuit.Process is afterwards identical with the situation beyond MPEG2-TS form.
As mentioned above, according to the present embodiment 1, comprising: broadcast wave demodulation section 30, this broadcast wave demodulation section 30 according to the Received signal strength of digital broadcasting to digital data stream carry out demodulation; Data flow kind judging part 31, the form of this data flow kind judging part 31 to the digit data stream after broadcast wave demodulation section 30 demodulation judges; MPEG2-TS heading message appendix 33, this MPEG2-TS heading message appendix 33, when data flow kind judging part 31 is judged as YES the form except MPEG2-TS form, adds the heading message of MPEG2-TS to the digit data stream of this form; And video/audio decompression LSI4, LSI4 is when have input the digit data stream beyond MPEG2-TS form in this video/audio decompression, regarding as based on heading message is MPEG2-TS form, decompresses to the content-data be compressed in this digit data stream.
Utilize said structure, the digit data stream beyond MPEG2-TS form can be regarded as MPEG2-TS form to process with easy structure.
Therefore, it is possible to use only with the video/audio decompression LSI of the low cost of the input interface of MPEG2-TS mode, the cost of receiving system can be reduced.
In addition, in execution mode 1, show the situation of specific format as MPEG2-TS form, but be not limited in this.That is, also can using digital broadcasting used other compression transmission means form as specific format.
In addition, in execution mode 1, as the additional information that expression is this situation of specific format, show the situation of the heading message using specific format, but as shown in Fig. 3 (b), also can using heading message and supplement information as said additional information, except heading message, as long as represent it is the information of this situation of specific format.
Execution mode 2.
Fig. 4 is the block diagram of the structure of the digital broacast receiver represented involved by embodiments of the present invention 2.Digital broacast receiver shown in Fig. 4 is following receiving system: namely, identical with execution mode 1, the broadcast of MPEG2-TS form can be received as specific format, and then, can receive as CMMB (China Mobile Multimedia Broadcasting: China Mobile multimedia broadcasting), with the form beyond above-mentioned specific format, information on services be carried out to the digital broadcasting of time-multiplexed broadcast mode.
In addition, the digital broacast receiver of Fig. 4 possesses antenna 1, tuner section 2, broadcast wave demodulation LSI3A and video/audio decompression LSI4 and forms.
In broadcast wave demodulation LSI3A, services selection portion 35, service multiplexing portion 36 and input part 37 are added to the structure of the broadcast wave demodulation LSI3 shown in execution mode 1.
In addition, because the action of data flow kind judging part 31, output selection portion 32 and MPEG2-TS heading message appendix 33 is identical with execution mode 1, therefore omit the description.
Services selection portion 35, from being be judged as YES the information on services of the digit data stream (being the data flow of CMMB) beyond MPEG2-TS form by data flow kind judging part 31 by time division multiplexing, selects the information on services utilized specified by input part 37 herein.In information on services, such as, when CMMB, there are programme information, video information, emergence message etc.
Service multiplexing portion 36 is following multiplexing units: namely, and the information on services according to being selected by services selection portion 35 generates digit data stream, and when selecting multiple information on services, these information on services is carried out time division multiplexing to generate digit data stream.Thus, generation only carries out time-multiplexed digit data stream again to the information on services selected by services selection portion 35.
Input part 37 is the input parts that can carry out specifying input from outside, and the input unit possessed by digital broacast receiver and control software design thereof realize.Such as, the multiplexing information on services in digit data stream also can be prompted to user's (selecting the display etc. of picture) by services selection portion 35, and utilizes input part 37 to carry out specified services information accordingly.
In addition, data flow kind judging part 31, output selection portion 32, MPEG2-TS heading message appendix 33, services selection portion 35, service multiplexing portion 36 and input part 37 also can be formed respectively as the special circuit in broadcast wave demodulation LSI3A, also can by being realized in the form of software by the microprocessor executive program of broadcast wave demodulation LSI3A.
Below, action is described.
Fig. 5 is the flow chart of the digital broadcast receiving method represented involved by execution mode 2, according to the process of daylight reason MPEG2-TS form and CMMB data flow this figure.In addition, the structure of digital broacast receiver is with reference to Fig. 4.
First, tuner section 2 is utilized to convert the Received signal strength of the digital broadcasting wave received by antenna 1 to intermediate frequency signal.This intermediate frequency signal is inputed to broadcast wave demodulation LSI3A.
In broadcast wave demodulation LSI3A, broadcast wave demodulation section 30 according to intermediate frequency signal to digital data stream carry out demodulation.
Data flow kind judging part 31 judges whether the digit data stream after by broadcast wave demodulation section 30 demodulation is MPEG2-TS form (step ST1a).
When through the digit data stream of demodulation is MPEG2-TS form (step ST1a: yes), this digit data stream directly exports to and exports selection portion 32 by data flow kind judging part 31.
On the other hand, when not being MPEG2-TS form (step ST1a: no), data flow kind judging part 31 exports services selection portion 35 by by time division multiplexing in the information on services of digit data stream.
Then, input part 37 accepts appointment input (step ST2a) of information on services.Thus, the information on services that should be selected is specified out.Such as, user also can utilize input part 37 to carry out appointment input, and input part 37 also can be utilized to specify specific information on services in advance.
Services selection portion 35, from by the information on services of time division multiplexing in digit data stream (data flow of CMMB), selects the information on services utilizing input part 37 to specify, and exports service multiplexing portion 36 (step ST3a) to.
Now, services selection portion 35 judges whether selected information on services is multiple (step ST4a).When selected information on services is one (step ST4a: no), this situation is informed to service multiplexing portion 36 by services selection portion 35.
When selecting multiple information on services (step ST4a: yes), the number etc. of selected information on services is informed to service multiplexing portion 36 by services selection portion 35.
Service multiplexing portion 36 when services selection portion 35 selects multiple information on services, then carries out time division multiplexing to these information on services, generates a digit data stream (step ST5a).In addition, when the information on services selected by services selection portion 35 is one, service multiplexing portion 36 directly utilizes this information on services to generate digit data stream.
As shown in Figure 6, MPEG2-TS heading message appendix 33 adds MPEG2-TS heading message (step ST6a) to the digit data stream generated by service multiplexing portion 36, and is exported to output selection portion 32.
Fig. 6 (a) shows the frame structure of CMMB.In execution mode 2, MPEG2-TS heading message appendix 33 is as shown in Fig. 6 (b), by the heading message (TS title) of MPEG2-TS and supplement information (Additonal Info) being inserted the front end of the data flow of CMMB, thus rebuild simulation MPEG2-TS packet.
Thus, identical with execution mode 1, the data flow beyond MPEG2-TS form also can process as MPEG2-TS.
The heading message (TS title) of MPEG2-TS is the information comprising the sync byte shown in execution mode 1, PID, touring counter.
In addition, additional information comprises the information of the form representing original data, represents the information of the information of original data being carried out the position split.
In addition, in the example of Fig. 6 (b), show the situation of TS title and supplement information being added as additional information, and if analyze TS title, then data flow can be processed as MPEG2-TS, therefore also only can add TS title.
Get back to the explanation of Fig. 5.
Export selection portion 32 identical with execution mode 1, when the digit data stream beyond MPEG2-TS form is selected as object output (beyond input=MPEG2-TS), the digit data stream that be addition of heading message by MPEG2-TS heading message appendix 33 is exported (step ST7a) from MPEG2-TS terminal 34.
In addition, exporting selection portion 32 (input=MPEG2-TS) when being selected as object output by the digit data stream of MPEG2-TS form, directly this digit data stream being exported (step ST8a) from MPEG2-TS terminal 34.
Afterwards, the process of video/audio decompression LSI4 is identical with execution mode 1.
As implied above, according to the present embodiment 2, comprising: broadcast wave demodulation section 30, this broadcast wave demodulation section 30 according to the Received signal strength of digital broadcasting to digital data stream carry out demodulation; Data flow kind judging part 31, the form of this data flow kind judging part 31 to the digit data stream after broadcast wave demodulation section 30 demodulation judges; Input part 37, this input part 37 can carry out appointment input from outside; Services selection portion 35, this services selection portion 35, when data flow kind judging part 31 is judged as YES beyond MPEG2-TS form, selects the information on services of being specified by input part 37 from multiplexing information on services in this digit data stream; Service multiplexing portion 36, the information on services of this service multiplexing portion 36 selected by services selection portion 35 generates digit data stream, and when selecting multiple information on services, is undertaken multiplexing by these information on services, generates digit data stream; MPEG2-TS heading message appendix 33, the digit data stream that these MPEG2-TS heading message appendix 33 pairs of service multiplexing portions 36 generate adds the heading message of MPEG2-TS form; And video/audio decompression LSI4, this video/audio decompression LSI4 is when inputting the digit data stream beyond MPEG2-TS form, regarding as based on heading message is MPEG2-TS form, decompresses to the content-data be compressed in this digit data stream.By adopting said structure, be re-used (time division multiplexing) in the service of the digit data stream of demodulation, when receive throughout all multiple services related information is broadcasted broadcast mode, also can use the video/audio decompression LSI of the low cost of the input interface only with MPEG2-TS mode, the cost of receiving system can be reduced.
In addition, in execution mode 2, show the situation of specific format as MPEG2-TS form, but be not limited in this.That is, also specific format can be used as with other form compressing transmission means that digital broadcasting is used.
In addition, in execution mode 2, as the additional information that expression is this situation of specific format, show the situation of the heading message using specific format, but as shown in Fig. 6 (b), also can using heading message and supplement information as said additional information, except heading message, as long as represent it is the information of this situation of specific format.
In addition, the present invention by each execution mode independent assortment, or can be out of shape any inscape of each execution mode in its scope of invention, or omits any inscape in each execution mode.
Industrial practicality
Digit data stream beyond specific format can be regarded as specific format to process with easy structure by digital broacast receiver involved in the present invention, is therefore applicable to the Vehicular digital broadcasting receiving apparatus of the broadcast area that such as may move to various broadcast mode.
Label declaration
1 antenna, 2 tuner section, 3,3A broadcast wave demodulation LSI, 4 video/audio decompression LSI, 30 broadcast wave demodulation sections, 31 data flow kind judging parts, 32 export selection portion, 33MPEG2-TS heading message appendix, 34MPEG2-TS terminal, 35 services selection portions, 36 service multiplexing portions, 37 input parts.
Claims (6)
1. a digital broacast receiver, the digital broadcasting obtained after the numerical data of some forms that this digital broacast receiver receives in specific format and form in addition flows through modulation, is characterized in that, comprising:
Demodulation section, this demodulation section carries out demodulation according to the Received signal strength of described digital broadcasting to described digit data stream;
Judging part, the form of this judging part to the digit data stream after described demodulation section demodulation judges;
Information appendix, this information appendix when described judging part is judged as YES beyond described specific format, to the additional information of specific format described in the digit data stream additional representation of this form; And
Decompression portion, this decompression portion is when have input the digit data stream beyond described specific format, and regarding as based on described additional information is described specific format, decompresses to the content-data being compressed in this digit data stream.
2. digital broacast receiver as claimed in claim 1, is characterized in that,
Described specific format is MPEG2-TS form.
3. digital broacast receiver as claimed in claim 1, is characterized in that,
Described additional information is the heading message of described specific format.
4. a digital broacast receiver, this digital broacast receiver receives the digital broadcasting that obtains after the numerical data of specific format flows through modulation and by the some digital broadcastings in the digital broadcasting obtained after flowing through modulation with the numerical data of the multiplexing information on services of form in addition, it is characterized in that, comprising:
Demodulation section, this demodulation section carries out demodulation according to the Received signal strength of described digital broadcasting to described digit data stream;
Judging part, the form of this judging part to the digit data stream after described demodulation section demodulation judges;
Input part, this input part can carry out appointment input from outside;
Services selection portion, this services selection portion, when described judging part is judged as YES beyond described specific format, from multiplexing described information on services in this digit data stream, selects the information on services specified by described input part;
Multiplexing unit, the described information on services of this multiplexing unit selected by described services selection portion generates digit data stream, and when selecting multiple information on services, is undertaken multiplexing by these information on services, generates digit data stream;
Information appendix, this information appendix is to the additional information of specific format described in the digit data stream additional representation generated by described multiplexing unit; And
Decompression portion, this decompression portion is when have input the digit data stream beyond described specific format, and regarding as based on described additional information is described specific format, decompresses to the content-data being compressed in this digit data stream.
5. a digital broadcast receiving method, the numerical data of some forms that this digital broadcast receiving method receives in specific format and form in addition flows through the digital broadcasting after modulation, it is characterized in that, comprising:
According to the Received signal strength of described digital broadcasting to digital data stream carry out the step of demodulation;
Judge the step of the form of the described digit data stream through demodulation;
To the step of the additional information of specific format described in the digit data stream additional representation be judged as YES beyond described specific format; And
The step being described specific format, the content-data being compressed in this digit data stream is decompressed is regarded as when have input the digit data stream beyond described specific format, based on described additional information.
6. a digital broadcast receiving method, this digital broadcast receiving method receives the digital broadcasting that obtains after the numerical data of specific format flows through modulation and some digital broadcastings in the digital broadcasting that obtains after flowing through modulation with the numerical data of the multiplexing information on services of form in addition, it is characterized in that, comprising:
According to the Received signal strength of described digital broadcasting to digital data stream carry out the step of demodulation;
Judge the step of the form of the described digit data stream through demodulation;
In the described information on services of this digit data stream, the step of specified information on services is selected when being judged as YES beyond described specific format, from multiplexing;
Generate digit data stream according to selected described information on services and undertaken multiplexing with the step generating digit data stream when selecting multiple information on services, by these information on services;
To the step of the additional information of specific format described in generated described digit data stream additional representation; And
The step being described specific format, the content-data being compressed in this digit data stream is decompressed is regarded as when have input the digit data stream beyond described specific format, based on described additional information.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2012/079958 WO2014076843A1 (en) | 2012-11-19 | 2012-11-19 | Digital broadcast reception device and digital broadcast reception method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104798378A true CN104798378A (en) | 2015-07-22 |
| CN104798378B CN104798378B (en) | 2016-08-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280077147.XA Expired - Fee Related CN104798378B (en) | 2012-11-19 | 2012-11-19 | Digital broacast receiver and digital broadcast receiving method |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5717931B2 (en) |
| CN (1) | CN104798378B (en) |
| DE (1) | DE112012007148T5 (en) |
| WO (1) | WO2014076843A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI751112B (en) * | 2015-09-01 | 2022-01-01 | 日商新力股份有限公司 | Signal receiving device, sending device and data processing method |
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| JP2007267104A (en) * | 2006-03-29 | 2007-10-11 | Matsushita Electric Ind Co Ltd | Digital broadcast retransmission system, retransmission device, and receiver |
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| JP2012142677A (en) * | 2010-12-28 | 2012-07-26 | Mitsubishi Electric Corp | Digital broadcast receiving device and digital broadcast receiving method |
| CN102665129A (en) * | 2012-04-27 | 2012-09-12 | 北京人民广播电台 | Played content-customizing method and played content-customizing device |
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| JP2004040492A (en) * | 2002-07-03 | 2004-02-05 | Matsushita Electric Ind Co Ltd | Multichannel reproducing apparatus, digital broadcast receiver, method for reproducing multichannel, program for reproducing multichannel, and recording medium |
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| JP5782705B2 (en) * | 2009-11-26 | 2015-09-24 | 三菱電機株式会社 | Digital broadcast receiving apparatus and receiving method thereof |
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2012
- 2012-11-19 JP JP2014546830A patent/JP5717931B2/en not_active Expired - Fee Related
- 2012-11-19 DE DE112012007148.4T patent/DE112012007148T5/en not_active Withdrawn
- 2012-11-19 WO PCT/JP2012/079958 patent/WO2014076843A1/en active Application Filing
- 2012-11-19 CN CN201280077147.XA patent/CN104798378B/en not_active Expired - Fee Related
Patent Citations (5)
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| CN1602045A (en) * | 2004-09-21 | 2005-03-30 | 深圳国微技术有限公司 | Conversion device and method for public interfacing digital television CI to IEEE-1394 interface |
| JP2007267104A (en) * | 2006-03-29 | 2007-10-11 | Matsushita Electric Ind Co Ltd | Digital broadcast retransmission system, retransmission device, and receiver |
| US20090106807A1 (en) * | 2007-10-19 | 2009-04-23 | Hitachi, Ltd. | Video Distribution System for Switching Video Streams |
| JP2012142677A (en) * | 2010-12-28 | 2012-07-26 | Mitsubishi Electric Corp | Digital broadcast receiving device and digital broadcast receiving method |
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| TWI751112B (en) * | 2015-09-01 | 2022-01-01 | 日商新力股份有限公司 | Signal receiving device, sending device and data processing method |
| US11330344B2 (en) | 2015-09-01 | 2022-05-10 | Saturn Licensing Llc | Receiving apparatus, transmitting apparatus, and data processing method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014076843A1 (en) | 2014-05-22 |
| DE112012007148T5 (en) | 2015-08-06 |
| JP5717931B2 (en) | 2015-05-13 |
| JPWO2014076843A1 (en) | 2017-01-05 |
| CN104798378B (en) | 2016-08-24 |
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