CN1251497C - Recording broadcasting apparatus for digital broadcasting data and method thereof - Google Patents
Recording broadcasting apparatus for digital broadcasting data and method thereof Download PDFInfo
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- CN1251497C CN1251497C CN 03122998 CN03122998A CN1251497C CN 1251497 C CN1251497 C CN 1251497C CN 03122998 CN03122998 CN 03122998 CN 03122998 A CN03122998 A CN 03122998A CN 1251497 C CN1251497 C CN 1251497C
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Abstract
The invention relates to a recording broadcasting apparatus for digital broadcasting data and method thereof. The method comprises: coding the inherent format with different transmitting bit string which is suitable for digital broadcast MPEG2 and transmitting received transmitting bit string such as Direct TV digital broadcast, switching Re-multiplexing to transmitting bit string in the form of MPEG 2, and storing in the storage media of HD-DVD (high intensity DVD) in the form of M-TP (MPEG Transport Packet) data packet, then reading playing and reverting to Direct TV digital broadcast transmitting bit string or transmitting the bit string in the form of MPEG 2, user with recording and broadcasting apparatus such as HD-DVD recorder (HD-VDR) making the digital broadcast with the inherent format such as Direct TV transmitting bit string store in the recording medium such as HD-DVD that can read out and play.
Description
(1) technical field
The present invention relates to a kind of record and playing device and method thereof of digital broadcast data, refer in particular in high density DVD recording mediums such as (HD-DVD:High Density Digital Versatile Disc) digital broadcast signal of the intrinsic form coding that record is different with MPEG2 (Moving Picture Experts Group2) mode with broadcast.
(2) background technology
At first, Fig. 1 is the record format figure of the transmission bit string of existing MPEG2 mode.The transmission bit string of above-mentioned MPEG2 mode (MPEG2 Transport Stream) is M-TP (MPEG TransportPacket) the packet formation by 188 bytes, but above-mentioned M-TP packet then also comprises the prefix title (Prefix) of 4 bytes and the pay(useful) load (Payload) of 184 bytes, in above-mentioned pay(useful) load, comprise the coupling document field (Adaption Field) of clock reference program PCR (Program Clock Reference) information.
In addition, in the prefix heading message of above-mentioned 4 bytes, comprise record sync byte (SB:Sync Byte), transmit wrong indication (TEI:Transport Error Indicator) and Information ID (PID:Packet ID) etc., the MPEG2 mode with above-mentioned record format transmits bit string and can be applied in most of digital broadcasting with the form that transmits bit string.
But in digital broadcastings such as Direc TV, only use to transmit the transmission bit string that the different intrinsic form of bit string is encoded with above-mentioned MPEG2 mode.The transmission bit string of above-mentioned Direc TV digital broadcasting, as shown in Figure 2, D-TP (Direc TV Transport Packet) packet by 130 bytes constitutes, and above-mentioned D-TP form then comprises the transmission block (Transport Block) of prefix title (Prefix) information and 128 bytes of 2 bytes.
In above-mentioned transmission block, comprise: have the continuous counter information (CC:Continuity Counter) and the packet header indication information (HD:Header Designator) of the packet of same service channel ID (SCID:Service Channel ID), comprise the pay(useful) load (Payload) that records auxiliary (Auxiliary) data or mpeg data etc. in addition.
Comprise record representation of data scramble whether control mark (CF:Control flag) and service channel ID (SCID) information etc. in the prefix heading message of above-mentioned 2 bytes, but in above-mentioned D-TP packet, as shown in Figure 3, comprise the RTS packet that records 5 byte reference times signs RTS (RTS:Reference Time Stamp) information and intermittently import and transmit, and above-mentioned RTS information just is included in ancillary chunk (the ADB:auxiliary Data Block) zone of RTS packet and transmits with the 10Hz cycle.
Transmission bit string with general MPEG2 broadcasting, write down the tape deck in the CDs such as being stored in DVD, for example, utilize DVD recorder, as mentioned above, when the above-mentioned Direc TV digital broadcasting with the intrinsic form coding different with the transmission bit string of MPEG2 mode of record storage transmits bit string,, can not carry out normal digital record operation because it transmits the packet difference of bit string.
Recently compared with general DVD, the high density DVD that the data record capacity increases substantially (HD-DVD) and in its high density DVD record and record and the playing device of playing digital broadcast signal, for example, launching between the relevant industry of the negotiation of high density DVD recorder (HD-VDR) exploitation and standardization effort, to transmit the solution that bit string is recorded in high density DVD with the digital broadcasting of the intrinsic form coding different as mentioned above, also not perform up to now with the transmission bit string of MPEG2 broadcasting.Be to find out its solution as early as possible now.
(3) summary of the invention
The present invention is for solving above-mentioned situation, its purpose just is to provide a kind of record and playing device and method thereof of digital radio data, just the transmission bit string of encoding according to intrinsic digital radio mode DirecTV, be transformed into the transmission bit string of MPEG2 mode, and with the form of M-TP (MPEG Transport Packet) packet, be stored on HD-DVD (high density DVD video disc) the class medium, when playing, again it is read and is reduced into the transmission bit string of DirecTV digital radio, perhaps the transmission bit string of MPEG2 mode.
The object of the present invention is achieved like this:
A kind of recording method of digital broadcast data is characterized in may further comprise the steps:
Step 1, the transfer data packets of the realization digital broadcast signal that will receive from the outside is reduced into the basic bit string of A/V;
Step 2 is converted to the basic bit string of described A/V basic bit string (PES) packet of packet subpackage;
Step 3 with basic bit string (PES) packet of described packet subpackage, is carried out after the segmentation segmentation with certain record size, and the addition record heading message is converted to the transfer data packets of certain way; And
Step 4 in the front of the transfer data packets of described certain way, is recorded in recording medium with described data packet arrival temporal information after additional.
A kind of player method of digital broadcast data is characterized in may further comprise the steps:
Step 1 is separated addition record in the packet information time of advent of the data bits transfer data packets front that the signal that reads/play obtains after treatment in recording medium;
Step 2 will comprise and be recorded in the heading message of isolating in the described packet transfer data packets of the time of advent and separate;
Step 3 is reduced to the data bits of isolating described heading message after the PES packet, and the heading message that will comprise and be recorded in its PES packet is separated, and is converted to the basic bit string of A/V; And
Step 4 is distinguished output with the basic bit string of described A/V with the transfer data packets of regulation record unit.
A kind of tape deck of digital broadcast data comprises: first conversion equipment, and the transfer data packets of the digital broadcast signal that will receive from the outside is converted to the basic bit string of A/V; Second conversion equipment is converted to the PES packet with the basic bit string of described A/V; The 3rd conversion equipment with described PES packet, carries out after the segmentation segmentation with certain record size, and the addition record heading message is converted to the transfer data packets of setting means; The additional period massaging device, in described each transfer data packets front, the described data packet arrival temporal information of additional insertion; And tape deck, the described packet information time of advent and transfer data packets are recorded in recording medium, be characterized in:
Described first conversion equipment is will be with after the heading message in MPEG2 transmits the Direc TV transfer data packets of 130 bytes that the different intrinsic form coding of bit string transmits is separated, and the Direc TV TP that separates the multichannel modulation conversion and be the basic bit string of A/V separates multiplexer;
Described second conversion equipment is that the basic bit string of described A/V is recorded in the PES pay(useful) load, the MPEG2 PES packetizer of the described PES heading message of addition record;
Described the 3rd conversion equipment is that the segmentation of described PES packet is subdivided into after 184 bytes, and addition record 4 byte header information are converted to the MPEG2 transport packet multiplexer of the MPEG2 transfer data packets of 188 bytes;
Described additional period massaging device is the packet information time of advent of 4 bytes that generate on the starting point that above-mentioned MPEG2 transfer data packets is converted, the additional TS inserter that is inserted in above-mentioned MPEG2 transfer data packets front.
A kind of playing device of digital broadcast data is characterized in comprising:
First separator separates addition record in the packet information time of advent of the transfer data packets front of the treated data bits that obtains of the signal that reads/play in recording medium;
Second separator will comprise and be recorded in the heading message of isolating in the described packet transfer data packets of the time of advent and separate;
Conversion equipment is reduced to the above-mentioned data bits of isolating header signal after the PES packet, will comprise the heading message that is recorded in the PES packet and separate, and is converted to the basic bit string of A/V; And
Output device is distinguished output with described A/V bit string with the transfer data packets of regulation record unit.
Effect of the present invention:
The record of digital broadcast data of the present invention and playing device and method thereof are, to transmit the transmission bit strings such as Direc TV digital broadcasting that receive to transmit the different intrinsic form coding of bit string with the MPEG2 that is applicable to most of digital broadcasting, reconstruct reduction frequency multiplexing technique (RE-multiplexing) and be the transmission bit string of MPEG2 mode, write down storage with M-TP (MPEG TransportPacket) packet that is suitable for high density DVD recording mediums such as (HD-DVD), when reading once more, be reduced into transmission bit strings such as original Direc TV digital broadcasting, perhaps play through the transmission bit string of MPEG2 mode, the user who has record such as high density DVD recorder (HD-VDR) and playing device, the digital broadcasting recording that Direc TV is transmitted inherent data bags such as bit string and can read/play in the recording medium of high density DVD etc.
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.
(4) description of drawings
Fig. 1 is the record format figure of the transmission bit string of the existing MPEG2 mode of expression.
Fig. 2 and Fig. 3 are the record format figure of the transmission bit string of expression Direc TV digital broadcasting.
Fig. 4 is the formation schematic diagram according to the tape deck of the digital broadcast data of the specific embodiment of the invention.
Fig. 5 is the recording method according to digital broadcast data of the present invention, and the transmission bit string of Direc TV digital broadcasting reconstructs the procedure chart into the transmission bit string of MPEG2 mode.
Fig. 6 is the formation schematic diagram according to the playing device embodiment of the digital broadcast data of the specific embodiment of the invention.
Fig. 7 is the formation schematic diagram according to the playing device of the digital broadcast data of another specific embodiment of the present invention.
(5) embodiment
At first, Fig. 4 represents is formation schematic diagram according to the tape deck of digital broadcast data of the present invention, and the tape deck of above-mentioned digital broadcast data for example, comprises in the tape deck of the digital broadcast data of high density DVD recorder (HD-VDR):
The dead lock 12 that above-mentioned 4 byte time information are carried out locking (Latch);
The D-TP packet of above-mentioned 130 bytes is separated frequency multiplexing technique modulation (de-multiplexing), and the DirecTV TP demux that conversion is output in the basic bit string of A/V (A/V Elementary Stream) separates multiplexer 13;
With the subpackage of the basic bit string data bag of above-mentioned A/V is the MPEG2 PES packetizer 14 of MPEG2 PES packet;
MPEG2 transport packet multiplexer (hereinafter to be referred as MPEG2 TP multiplexer) 15, with above-mentioned PES packet, carry out after the segmentation segmentation with 184 byte unit, heading message in its front addition record 4 bytes, transmit bit string with MPEG2--the M-TP packet of 188 bytes is exported;
TS inserter 16, in the above-mentioned 188 byte fronts that will export, the additional 4 byte time information of inserting through above-mentioned dead lock 12 lockings (TS);
Tracer signal processor (DSP) 17 with above-mentioned those 4 byte time information and 188 byte M-TP packets, is processed into and is suitable for recorded information;
In view of the above, 10 li of above-mentioned clock pulse generators, as Fig. 3 and shown in Figure 5, transmit 5 byte RTS information of record in the ancillary chunk (ADB) that is included in the RTS packet in the Direc TV transmission bit string with the 10Hz cycle, with this 5 byte RTS information is benchmark, produces the clock pulse of above-mentioned 27MHz frequency.
In 11 li in above-mentioned counter, count the pulse of above-mentioned 27MHz frequency clock, will be when MPEG2 transmits 4 byte time information (TS) of the packet information time of advent PAT information in the bit string, as shown in Figure 1, generate program time information--the PCR information that output is recorded in the matching area of M-TP packet, the temporal information of above-mentioned 4 bytes is then carried out locking through dead lock 120, and above-mentioned PCR information just can be output in above-mentioned MPEG2 TP multiplexer 15.
Separate 13 li of multiplexer at above-mentioned Direc TV TP, shown on Fig. 2 and Fig. 5, the 2 byte header information that are recorded in 130 byte D-TP packet fronts that will receive from the outside are carried out after separating, those are recorded in isolate 2 byte header signals, the data separating multichannel of exporting 128 byte transmission blocks with audio frequency and video bit string is modulated to the basic bit string of A/V.
Also have, 14 li of above-mentioned MPEG2 PES packetizer, with above-mentioned A/V bit string of having separated the multichannel modulation, the packet subpackage is a MPEG2 PES packet, but then comprise the reproduction time information (PTS:Presentation) that records view data in above-mentioned PES packet header information, also the record that comprises of selectivity (Optional) is used for the decode time flag information (DTS:Decording Time Stamp) of decoding (DECORDING) above-mentioned view data.
15 li of above-mentioned MPEG2 TP multiplexer, as shown in Figure 5, with above-mentioned PES packet, carry out after the segmentation segmentation with 184 byte unit, heading message in the front of its 184 byte addition record 4 bytes, the M-TP packet that converts 188 bytes to is exported, but then comprises the 11 li PCR information that generate output of above-mentioned counter that record in the matching area of above-mentioned M-TP packet pay(useful) load (Payload).
And, 16 li of above-mentioned TS inserters, 4 byte time information of above-mentioned dead lock 12 lockings have arrived the M-TP packet front of above-mentioned 188 bytes with regard to addition record, and at this moment above-mentioned 4 byte time information then are recorded in the packet information time of advent that comprises first D-TP packet that is recorded in above-mentioned 188 byte M-TP packets.
Then, above-mentioned 188 byte M-TP packets then can be generated as with the MPEG2 mode that is applied to most of digital broadcasting and transmit the identical record format of bit string, thereby 17 li of above-mentioned tracer signal processors, as mentioned above, the M-TP packet of the temporal information of 4 bytes and 188 bytes, become the signal that is suitable for writing down through the tracer signal processing, and 18 li of above-mentioned light pickers, then to finish transmission bit string with the above-mentioned MPEG2 mode of handling through tracer signal, be recorded in the data recording operation of the data record layer of HD-DVD100 with high density recording hole shape, the aforesaid devices and methods therefor that the digital broadcast data of record is read/plays is as follows:
Fig. 6 is the formation schematic diagram of the playing device of first embodiment of the present invention digital broadcast data.The playing device of above-mentioned digital broadcast data for example, comprises in the playing device of the digital broadcast data of high density DVD recorder (HD-VDR):
Read the light picker 28 of HD-DVD100 tracer signal;
The signal that above-mentioned light picker 28 is read carries out the play signal processor (DSP) 27 that play signal is handled;
The TS separator 26 that will separate with 188 byte M-TP packets from 4 byte time information of above-mentioned play signal processor 27 outputs;
MPEG2 TP separates multiplexer 25, is separated by the 4 byte header information that comprise record in the 188 byte M-TP packets of isolating above-mentioned 4 byte time information, exports 184 byte unit data;
MPEG2 PES separates packetizer 24, is after the PES packet with the reduction of data of above-mentioned 184 byte-sized, its PES heading message that is contained in the PES packet is separated, and heading message is converted to the basic bit string of A/V exports;
The basic bit string multichannel of above-mentioned A/V is modulated into the M-TP packet of 130 bytes, is output in the Direc TV multiplexer 23 that original Direc TV transmits bit string;
Time controller 22, the 4 byte time information and the clock pulse generator 20 that relatively from above-mentioned TS separator 26, separate output through 27MHz frequency clock pulse taking place and counting, and the temporal information of counter 21 generation outputs, control above-mentioned Direc TV TP multiplexer output time.
In view of the above, 26 li of above-mentioned TS separators, as shown in Figure 5, addition record is separated in 4 byte time information (TS) of 188 byte M-TP packet fronts, when above-mentioned time controller 22 is exported, also will export the 188 byte M-TP packets of having isolated above-mentioned 4 byte time information.
Separate 25 li of multiplexer at above-mentioned MPEG2 TP, to comprise the 4 byte header information that are recorded in the above-mentioned 188 byte M-TP packets separates, just export the data bits of 184 byte unit, and separate packetizer (de-packetizer) 24 li at above-mentioned MPEG2 PES, to be reduced to the data bits of above-mentioned 184 byte unit output after the PES packet, to comprise the PES heading message that is recorded in its PES packet and separate, and be converted to the basic bit string of A/V and export.
23 li of above-mentioned Direc TV TP multiplexer, to separate the basic bit string of A/V of packetizer (de-packetizer) output from above-mentioned MPEG2 PES, be converted to 130 byte M-TP packets and distinguish output, at this moment 22 li of above-mentioned time controllers, to compare through temporal information and the above-mentioned 4 byte time information that above-mentioned clock pulse generator 20 sum counters 21 generate output, control is to the output time of above-mentioned 130 byte D-TP packets.
23 li of above-mentioned Direc TV TP multiplexer, control signal according to above-mentioned time controller 22, above-mentioned 130 byte D-TP packets are output according to the order of sequence just, reconstructing is the Direc TV digital broadcast signal that the record of 188 byte M-TP packets is stored in HD-DVD, the result just is reduced to the D-TP packet of 130 bytes, and is played output.
Figure 7 shows that formation schematic diagram according to another specific embodiment digital broadcast data playing device of the present invention.In the playing device of the digital broadcast data of HD-DVD recorder (HD-VDR), comprise: with reference to shown in Figure 6, be by light picker 36, play signal processor (DSP) 35, TS separator 34, clock pulse generator 30, counter 31 and time controller 32.Comprise also that simultaneously interim storage isolated 188 byte M-TP packets of 4 byte time signals through above-mentioned TS separator 34, then according to the control signal that comprises above-mentioned time controller 32 outputs with the M-TP packet of the 188 bytes temporary storage 33 of output continuously according to the order of sequence.
34 li of above-mentioned TS separators, from the data bits of above-mentioned play signal processor 35 outputs, separate addition record in 4 byte time information (TS) of 188 byte M-TP packet fronts, 4 byte time information with this separation, to above-mentioned time controller 32 outputs, and, be stored in 33 li of the temporary storages of above-mentioned similar shift register with the above-mentioned 188 byte M-TP packets of isolating 4 byte time information temporarily.
32 li of above-mentioned time controllers, to compare through the 4 byte time information that above-mentioned clock pulse generator 30 sum counters 31 generate the temporal information of output and separate output from above-mentioned TS separator 34, control the above-mentioned output time that is stored in 188 byte M-TP packets of temporary storage 33, so, the M-TP packet that is stored in 180 bytes of 33 li of above-mentioned temporary storages just can be exported according to the order of sequence continuously, the result, reconstructing is the Direc TV digital broadcast signal that 188 byte M-TP packets and record are stored in HD-DVD, just plays output with the M-TP packet of 180 bytes.
The embodiment that is expected to of the present invention as previously mentioned, for the purpose that reaches indication is launched, certainly, 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 (14)
1. the recording method of a digital broadcast data is characterized in that described recording method may further comprise the steps:
Step 1, the transfer data packets of the digital broadcast signal that will receive from the outside is reduced into the basic bit string of A/V;
Step 2 is converted to the basic bit string of described A/V basic bit string (PES) packet of packet subpackage;
Step 3 with basic bit string (PES) packet of described packet subpackage, is carried out after the segmentation segmentation with certain record size, and the addition record heading message is converted to the transfer data packets of certain way; And
Step 4, in the front of the transfer data packets of described certain way, with described data packet arrival temporal information is additional insert after, be recorded in recording medium.
2. the recording method of digital broadcast data as claimed in claim 1, it is characterized in that, the transfer data packets of described digital broadcast signal, as the different intrinsic form of bit string is encoded and the transfer data packets of the Direc TV digital broadcast signal of transmission to transmit with MPEG2, has the record size of 130 bytes.
3. the recording method of digital broadcast data as claimed in claim 2, it is characterized in that, in the step 1 in the described recording method, to comprise the 2 byte header information that are recorded in described 130 byte Direc TV transfer data packets and carry out after separating, with the data that are recorded on the residue transmission block, separate multichannel and be modulated into the basic bit string of A/V.
4. the recording method of digital broadcast data as claimed in claim 1, it is characterized in that, in the step 3 in the described recording method, with described PES packet, carry out after the segmentation segmentation with the record size of 184 bytes, the heading message of addition record 4 bytes is converted to the MPEG2 transfer data packets of 188 byte records sizes.
5. the recording method of digital broadcast data as claimed in claim 4 is characterized in that, the described PES packet information time of advent is the 4 byte time information that are created on the conversion starting point of described MPEG2 transfer data packets.
6. the player method of a digital broadcast data is characterized in that described player method may further comprise the steps:
Step 1 is separated addition record in the packet information time of advent of the treated data bits transfer data packets front that obtains of the signal that reads/play in recording medium;
Step 2 will comprise and be recorded in the heading message of isolating in the described packet transfer data packets of the time of advent and separate;
Step 3 is reduced to the data bits of isolating described heading message after the PES packet, and the heading message that will comprise and be recorded in the described PES packet is separated, and is converted to the basic bit string of A/V; And
Step 4 is distinguished output with the basic bit string of described A/V with the transfer data packets of regulation record unit.
7. the player method of digital broadcast data as claimed in claim 6 is characterized in that, in described step 2, will comprise the 4 byte header information that are recorded in the 188 byte MPEG2 transfer data packets of isolating the packet information time of advent and separate.
8. the player method of digital broadcast data as claimed in claim 6, it is characterized in that, in described step 4, the basic bit string of described A/V is distinguished output with the transfer data packets of regulation record unit be meant: the transfer data packets form with the Direc TV digital broadcast signal of 130 byte records sizes is distinguished output.
9. the player method of digital broadcast data as claimed in claim 8, it is characterized in that the transfer data packets form of described 130 bytes is distinguished output and is meant: with packet the 4 byte data bag time of advent information that the time of advent information separate of addition record in the treated data bits transfer data packets front that obtains of the signal that reads in recording medium/plays is that benchmark is distinguished and exported.
10. the tape deck of a digital broadcast data comprises: first conversion equipment, and the transfer data packets of those digital broadcast signals that will receive from the outside is converted to the basic bit string of A/V; Second conversion equipment is converted to the PES packet with the basic bit string of described A/V; The 3rd conversion equipment with described PES packet, carries out after the segmentation segmentation with certain record size, and the addition record heading message is converted to the transfer data packets of certain way; The additional period massaging device, in described each transfer data packets front, the described data packet arrival temporal information of additional insertion; And tape deck is recorded in recording medium with the described packet information time of advent and transfer data packets, it is characterized in that:
Described first conversion equipment is will be with after the heading message in MPEG2 transmits the Direc TV transfer data packets of 130 bytes that the different intrinsic form coding of bit string transmits is separated, and the Direc TV TP that separates the multichannel modulation conversion and be the basic bit string of A/V separates multiplexer;
Described second conversion equipment is that the basic bit string of described A/V is recorded in the PES pay(useful) load, the MPEG2 PES packetizer of the described PES heading message of addition record;
Described the 3rd conversion equipment is that the segmentation of described PES packet is subdivided into after 184 bytes, and addition record 4 byte header information are converted to the MPEG2 transport packet multiplexer of the MPEG2 transfer data packets of 188 bytes;
Described additional period massaging device is the packet information time of advent of 4 bytes that generate on the starting point that above-mentioned MPEG2 transfer data packets is converted, the additional TS inserter that is inserted in above-mentioned MPEG2 transfer data packets front.
11. the playing device of a digital broadcast data is characterized in that described playing device comprises:
First separator, the packet information time of advent of the transfer data packets front of the data bits that addition record is obtained after treatment in the signal that reads in recording medium/play is separated;
Second separator separates the heading message of isolating in the described packet transfer data packets of the time of advent;
Conversion equipment is reduced to the data bits of isolating described heading message after the PES packet, will comprise the heading message that is recorded in the PES packet and separate, and is converted to the basic bit string of A/V; And
Output device writes down the unit transfer data packets with the basic bit string of described A/V with regulation.
12. the playing device of digital broadcast data as claimed in claim 11, it is characterized in that described second separator is to carry out isolated M PEG2 TP and separate multiplexer isolating the 4 byte header information that comprise record in the 188 byte MPEG2 transfer data packets of the described packet information time of advent.
13. playing device as claim 11 or 12 described digital broadcast datas, it is characterized in that described output device is a Direc TV TP multiplexer of the basic bit string of above-mentioned A/V being distinguished output with the form of the transfer data packets of the Direc TV digital broadcast signal of 130 byte records sizes.
14. the playing device of digital broadcast data as claimed in claim 13 is characterized in that, described 130 byte transfer data packets are that the 4 byte data bag information time of advent of separating with above-mentioned first separator are that benchmark is distinguished output.
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| CN 03122998 CN1251497C (en) | 2002-10-16 | 2003-04-21 | Recording broadcasting apparatus for digital broadcasting data and method thereof |
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| CN02137466 | 2002-10-16 | ||
| CN02137466.X | 2002-10-16 | ||
| CN 03122998 CN1251497C (en) | 2002-10-16 | 2003-04-21 | Recording broadcasting apparatus for digital broadcasting data and method thereof |
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