CN101521736B - Digital broadcasting transmission/reception devices capable of improving receiving performance and signal processing method thereof - Google Patents

Digital broadcasting transmission/reception devices capable of improving receiving performance and signal processing method thereof Download PDF

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CN101521736B
CN101521736B CN 200910128567 CN200910128567A CN101521736B CN 101521736 B CN101521736 B CN 101521736B CN 200910128567 CN200910128567 CN 200910128567 CN 200910128567 A CN200910128567 A CN 200910128567A CN 101521736 B CN101521736 B CN 101521736B
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data
known
robust
digital broadcasting
packet
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CN 200910128567
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CN101521736A (en
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丁海主
张龙德
朴义俊
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三星电子株式会社
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Priority to KR1020040036002 priority
Priority to KR10-2005-0041541 priority
Priority to KR10-2005-0041532 priority
Priority to KR20050041532A priority patent/KR100667329B1/en
Priority to KR20050041541A priority patent/KR100667316B1/en
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Priority to CN200580015642.8 priority
Priority to CN200580015642.82005.05.19 priority
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Abstract

Disclosed is a digital broadcasting transmission/reception system having an improved reception performance and a signal-processing method thereof. A digital broadcasting transmitter comprises a randomDisclosed is a digital broadcasting transmission/reception system having an improved reception performance and a signal-processing method thereof. A digital broadcasting transmitter comprises a randomizer for inputting dual TS stream consists of robust and normal packets having stuff bytes inserted in predetermined positions and randomizing the dual TS stream; a stuff byte exchanger for replacingizer for inputting dual TS stream consists of robust and normal packets having stuff bytes inserted in predetermined positions and randomizing the dual TS stream; a stuff byte exchanger for replacingthe stuff byte of a randomized data stream from the randomizer to a predetermined known data; and an encoder for encoding a data streams to which the known data is inserted. Accordingly, the present ithe stuff byte of a randomized data stream from the randomizer to a predetermined known data; and an encoder for encoding a data streams to which the known data is inserted. Accordingly, the present invention detects the known data from a signal received from a reception side and uses the detected known data for synchronization and equalization, so that the digital broadcasting reception performannvention detects the known data from a signal received from a reception side and uses the detected known data for synchronization and equalization, so that the digital broadcasting reception performance can be improved at poor multipath channels.ce can be improved at poor multipath channels.

Description

改善接收性能的数字广播发送/接收装置及信号处理方法 Improve reception performance of the digital broadcast transmitting / receiving apparatus and a signal processing method

[0001] 本申请是申请日为2005年5月19日、申请号为200580015642. 8、题为“改善接收 [0001] This application is filed on May 19, 2005, Application No. 200580015642.8, entitled "Improving reception

性能的数字广播发送/接收装置及信号处理方法”的专利申请的分案申请。 Divisional application properties of a digital broadcast transmitting / receiving apparatus and a signal processing method "patent application.

技术领域 FIELD

[0002] 本发明涉及一种数字广播发射机和接收机,更具体地说,涉及一种在双流中用预定义的已知数据替换插入数据流的填充字节,并将其发送以增强接收性能的数字广播发射机及其信号处理方法,以及相应的数字广播接收机及其信号处理方法。 [0002] The present invention relates to a digital broadcast transmitter and a receiver, and more particularly, relates to an alternative stuffing byte is inserted in the data stream with a predefined known dual-stream data, and transmits it to enhance reception the digital broadcasting transmitter performance and signal processing method, and a corresponding digital broadcasting receiver and a signal processing method.

背景技术 Background technique

[0003] 高级电视系统委员会残留边带(ATSC VSB)是面向美国的地面波数字广播系统,其为单载波方案并且每312个段单位使用场同步信号。 [0003] Advanced Television Systems Committee Vestigial Sideband (ATSC VSB) is the U.S-oriented terrestrial waves digital broadcasting system 312 and each field sync signal section units using a single carrier scheme. 因此,在较差的信道中,特别是在多普勒衰减信道中,接收性能并不好。 Thus, in poor channels, especially in a Doppler fading channel, reception performance is not good.

[0004] 图1是示出ATSC VSB的传统发射机的框图。 [0004] FIG. 1 is a block diagram of a conventional ATSC VSB transmitter. 图1的数字广播发射机是由菲利浦公司提出的加强残留边带(EVSB)系统,其通过将强健数据(robustdata)加入现有ATSC VSB 系统的正常数据而形成双流(dual stream)并发送所述双流。 The digital broadcasting transmitter of FIG. 1 is proposed by Philips reinforcing vestigial sideband (the EVSB) system, which is formed double (dual stream) by the robust data (robustdata) was added to normal data of the existing ATSC VSB transmission system and the dual-flow.

[0005] 如图1所示,数字广播发射机具有:随机化器(11),用于随机化数据;第一RS编码器(12),用于对随机化的数据执行RS编码;包格式器(13),用于对编码的数据中的强健数据进行交织,以1/2比率重建包,插入包标识符(PID)并将所述数据与正常数据复用•'交织器(14),用于对所述数据进行交织;格状编码器(15),用于对交织的数据中的强健数据执行加强编码,并随后执行普通的2/3比率的格状编码;控制器(16),用于输出控制正常数据和强健数据的信号;第二RS编码器(17),用于对加强编码的强健数据执行RS再编码(RS re-coding),以与现有接收机兼容并替换奇偶校验;复用器(18),用于将场同步和段同步插入格状编码的数据;以及调制器(19),用于将导频加入复用的信号并执行残留边带(VSB)调制和RF上变换。 [0005] As shown in FIG. 1, the digital broadcasting transmitter comprising: a randomizer (11) for the randomized data; a first RS encoder (12), the randomized data for performing RS encoding; packet format (13), for the encoded data is interleaved robust data to reconstruct the packet rate 1/2, insert a packet identifier (PID) of the data and the normal data multiplexing • 'interleaver (14) for interleaving the data; trellis encoder (15) for interleaving data in the implementation of the enhanced encoding of the robust data, and then perform a trellis encoding of ratio 2/3 Common; a controller (16 ), a control signal for outputting normal data and robust data; a second RS encoder (17), a robust data coding is performed to strengthen the RS re-encoder (RS re-coding), and compatibility with existing receivers Alternatively parity; a multiplexer (18) for inserting a field sync and segment sync trellis coded data; and a modulator (19) for multiplexing the pilot signal is added and performing a vestigial sideband ( VSB) modulation and up-conversion RF.

[0006] 参照图1,根据在一个信道发送正常数据和强健数据的双流方案来复用正常数据和强健数据(未示出),并且将复用的数据输入随机化器(11)。 [0006] Referring to FIG 1, the normal data and robust data transmission in a dual-stream scheme the channel multiplexing normal data and the robust data (not shown), and input the multiplexed data randomizer (11). 由随机化器(11)来随机化输入的数据,并将其输入到第一RS编码器(12),经过RS编码以纠正信道产生的差错,并输入到包格式器(1¾。然后,执行强健处理,从而对编码的数据中的强健数据进行交织,以1/2比率的包进行重建,并插入PID。随后将强健处理之后的数据与正常数据复用并将其输出ο A randomizer (11) for input of the random data, and inputs it to a first RS encoder (12), the RS encoding to correct errors generated by channels, and input to the packet formatter (1¾. Then, the robust process, whereby the encoded data interleaved in the robust data to the packet reconstruction rate 1/2, and insert PID. robust data after subsequently processing the normal data and outputs the multiplexed ο

[0007] 图2示出从图1的包格式器(13)输出的数据格式。 [0007] FIG. 2 shows a data format of the packet format of FIG. 1 (13) output.

[0008] 参照图2,以特定间隔排列正常数据和强健数据,从而格状编码后的正常信号和强健信号以规则的间隔分布。 [0008] Referring to Figure 2, normal data and robust data are arranged at certain intervals, so that the normal signal and the strong signal Trellis encoding distributed at regular intervals.

[0009] 通过分散数据的交织器(14)来对产生的输出数据进行交织,通过执行普通2/3比率的格状编码的格状编码器(1¾对强健数据进行加强编码,对数据进行格状编码。通过替换奇偶校验的第二RS编码器(17)对加强编码的强健数据进行RS再编码以与现有接收机兼容,并将奇偶校验发送到格状编码器(1¾。所述信号经过将场同步和段同步插入格状编码的数据的复用器(18),并被发送到对于所述信号加入导频并执行VSB调制和RF上变换的调制器(19),随后被发送。这里,由输出用于控制正常数据和强健数据的信号的控制器(16)来控制正常数据和强健数据。 [0009] The dispersion is carried out by data interleaver (14) interleaving on the output data produced, the encoding is reinforced by performing the trellis encoding of ordinary 2/3 rate trellis encoder (1¾ the robust data, the data format shape coding. strengthening robust encoded data re-encoded by the RS encoder of the second RS parity replacement (17) to be compatible with existing receivers, and transmits the parity to the trellis encoder (1¾. the said signal after the inserted segment sync and field sync trellis coding multiplexer (18) and is sent to the pilot added to the signal and performs modulation (19) and converting the VSB-modulated RF, then is transmitted. here, a controller for controlling the output (16) of robust data and normal data signals to control normal data and robust data.

[0010] 构建图1的面向美国的地面波数字电视系统以通过将强健数据加入现有ATSC VSB系统的正常数据而形成双流,并发送所述双流,从而可一起发送现有正常数据以及强健数据。 U.S-oriented terrestrial waves digital television system [0010] FIG. 1 is constructed by adding the robust data is added to normal data of the existing ATSC VSB system to form a dual stream, and transmits the dual stream, thereby transmitting normal data and robust data prior together .

[0011] 然而,图1的面向美国的地面波数字电视系统具有这样的问题:尽管发送带有加入的强健数据的双流,但是由于现有正常流的传输而造成的多径信道中较差的传输性能仍基本没有改善。 [0011] However, US-oriented terrestrial waves digital television system of FIG. 1 has a problem: Even though the robust data transmission with a double added, but the multipath channel due to the transmission of the conventional normal stream caused by poor transmission performance is still no fundamental improvement. 换言之,在多径环境中,改善的正常流很少改善接收性能,强健流对于接收性能没有显著的影响。 In other words, in a multipath environment, improvement of the normal stream little to improve reception performance, robust stream no significant effect on the reception performance.

发明内容 SUMMARY

[0012] 技术问题 [0012] Technical issues

[0013] 本发明的一方面在于提供一种数字广播发射机,其用已知数据替换插入双流的填充字节,并发送所述数据以增强传输性能,并且提供所述数字广播发射机的信号处理方法, 以及相应的数字广播接收机及其信号处理方法。 [0013] In one aspect of the present invention is to provide a digital broadcasting transmitter, which was replaced with known data inserted stuff bytes double, and transmits the data to enhance transmission performance and provide a signal to the digital broadcast transmitter processing method, and a corresponding digital broadcasting receiver and a signal processing method.

[0014] 技术方案 [0014] Technical Solution

[0015] 为了实现本发明的一方面,数字广播发射机包括:随机化器,用于接收预定格式的双TS流,并对其进行随机化,在所述预定格式中,在正常数据包中以预定间隔插入强健数据包,在特定位置用填充字节插入正常数据;填充字节替换部分,用于用预定的已知数据替换从随机化器输出的数据中的填充字节;第一RS编码器,用于对从填充字节替换部分输出的数据执行RS编码;包格式器,用于对从第一RS编码器输出的数据中的强健包进行交织, 并重建格式;交织器,用于对从包格式器输出的数据进行交织;格状编码器,用于对从交织器输出的数据进行格状编码;第二RS编码器,用于对格状编码的数据中的强健包进行RS编码以变更奇偶校验,并将其输入格状编码器;以及调制器,用于调制从格状编码器输出的数据,并执行RF上变换。 [0015] In order to achieve an aspect of the present invention, the digital broadcasting transmitter comprising: a randomizer for receiving dual TS stream of a predetermined format, and subjected to randomization, at the predetermined format, the normal data packet inserted at predetermined intervals robust data packet, the stuffing byte is inserted into the normal data at a specific position; stuff byte replacing part for replacing the stuff byte of data output from the randomizer with a predetermined known data; a first RS an encoder for replacing part of the output from the stuff byte performing RS encoding of data; the packet formatter, for data output from the first RS encoder packets in the robust interleaver and reconstruction format; interleaver, with in the format of a data packet output from the interleaver; trellis encoder, for interleaving the data output from the trellis encoding unit; a second RS encoder for trellis encoding of the robust data packets RS encoding to change the parity, and inputs the trellis encoder; and a modulator for modulating the data output from the trellis encoder, and performs conversion on the RF.

[0016] 优选的是,格状编码器具有用于格状编码的存储器,并且初始化从插入填充字节的位置输入的数据的存储器。 [0016] Preferably, the trellis encoder for trellis coding having a memory, and initializes the data from the insertion position of the stuff bytes of the input memory.

[0017] 优选的是,所述数字广播发射机还包括填充字节控制器,用于产生用来指示填充字节的位置信息并控制格状编码的存储器初始化的控制信号。 [0017] Preferably, the digital broadcasting transmitter further includes a stuff byte controller for generating position information for indicating stuff byte and a control signal memory initialization trellis coding.

[0018] 此外,所述数字广播发射机还包括包缓冲器,用于输出并暂时存储与从第一RS编码器输出的数据中的填充字节的位置相应的数据。 [0018] Further, the digital broadcasting transmitter further includes a stuffing byte position of data output from the first RS encoder corresponding packet buffer, and temporarily stores for outputting.

[0019] 更加优选的是,所述包缓冲器从格状编码器接收根据存储器初始化而变更的数据,并更新暂时存储的数据。 [0019] More preferably, the packet buffer receives changed according to the memory initialization from the Trellis encoder data, and updates the temporarily stored data.

[0020] 此外,所述数字广播发射机还包括奇偶校验重建部分,用于从包缓冲器接收更新的数据,对所述数据执行RS编码以产生变更的奇偶校验,并将变更的奇偶校验输出到格状编码器,以替换由第一RS编码器加入的奇偶校验。 [0020] Further, the digital broadcasting transmitter further includes a parity check reconstruction part for update data received from the packet buffer, performing RS encoding of the data to generate parity change, and changes the parity checked out to the trellis encoder, to replace joined by a first parity of the RS encoder.

[0021] 更加优选的是,填充字节被插入正常数据包的自适应字段。 [0021] More preferably, the stuff bytes are inserted in adaptation field of the normal data packet. [0022] 此外,在正常数据包的特定位置插入关于插入的填充字节的位置和长度的信息。 [0022] In addition, insert the information about the position and length of the inserted stuff bytes at a certain position of the normal data packet.

[0023] 此外,已知数据可具有带有预定义的特定模式的序列。 [0023] In addition, the known data may have a specific sequence having a predefined pattern.

[0024] 同时,一种用于数字广播发射机的信号处理的方法包括:随机化步骤,接收特定格式的双TS流,并对其进行随机化,在所述特定格式中,在正常数据包中以预定间隔插入强健数据包,在特定位置用填充字节插入正常数据;填充字节替换步骤,用预定的已知数据替换从随机化步骤输出的数据中的填充字节;第一RS编码步骤,对从填充字节替换步骤输出的数据执行RS编码;包重建步骤,对从第一RS编码步骤输出的数据中的强健包进行交织, 并重建格式;交织步骤,对从包重建步骤输出的数据进行交织;格状编码步骤,对交织的数据执行格状编码;第二RS编码步骤,对格状编码的数据中的强健包执行RS编码以变更奇偶校验,并将其输入格状编码步骤;以及调制步骤,调制从格状编码步骤输出的数据,并执行RF上变换。 [0024] Meanwhile, A signal processing method for a digital broadcasting transmitter comprising: randomizing step of receiving a dual TS stream of a certain format, and subjected to randomization, in the specific format, the normal data packet are inserted at predetermined intervals robust data packet, the stuffing byte is inserted into the normal data at a specific position; stuff byte replacing step of replacing the stuff bytes of data output from the randomizing step with a predetermined known data; a first RS encoding step of performing RS encoding of the data from the stuff byte replacing step output; packet reconstruction step, the data output from the first RS encoding step is robust interleaving packets, and the reconstruction format; interleaving step, the output from the packet reconstruction step data interleaving; trellis encoding step, performing interleaved data trellis coding; second RS encoding step of trellis coding the robust data packets performing RS encoding to change the parity, and inputs the trellis coding step; and a modulation step of modulating the data output from the trellis encoding step, and the transformation is performed on the RF.

[0025] 此外,根据本发明的数字广播发射机包括:随机化器,用于随机化特定格式的双TS流,所述特定格式具有正常数据包和强健数据包,在所述正常数据包中,在特定位置插入填充字节;填充字节替换部分,用于用预定的已知数据替换从随机化器输出的数据中的填充字节;第一RS编码器,用于对从填充字节替换部分输出的数据执行RS编码;包格式器, 用于对从第一RS编码器输出的数据中的强健包进行交织,并重建格式;交织器,用于对从包格式器输出的数据进行交织;格状编码器,用于对从交织器输出的数据执行格状编码; 第二RS编码器,用于对格状编码的数据中的强健包进行RS编码以变更奇偶校验,并将所述数据输入格状编码器;以及调制器,用于调制从格状编码器输出的数据,并执行RF上变换。 [0025] Further, according to the present invention, the digital broadcasting transmitter comprising: a randomizer for randomizing the TS stream dual specific format, said specific format having a normal data packet and robust data packet, in said normal data packet , stuff bytes inserted at a specific position; stuff byte replacing part for replacing the stuff byte of data output from the randomizer with a predetermined known data; a first RS encoder for stuffing bytes from performing RS encoding of data output from the substitution part; the packet formatter, for the data from the first RS encoder output in packet interleaving robust and reconstruction format; interleaver for the data output by the packet formatter interleaving; trellis encoder for performing trellis encoding on the data outputted from the interleaver; a second RS encoder for trellis encoding of the robust data packet RS-encoded to change the parity, and the trellis encoder input data; and a modulator for modulating the data output from the trellis encoder, and performs conversion on the RF.

[0026] 此外,一种用于数字广播发射机的信号处理的方法,包括:随机化步骤,随机化特定格式的双TS流,所述特定格式具有正常数据包和强健数据包,在所述正常数据包中,在特定位置插入填充字节;填充字节替换步骤,用预定的已知数据替换从随机化步骤输出的数据中的填充字节;第一RS编码步骤,对从填充字节替换步骤输出的数据执行RS编码;包重建步骤,对从第一RS编码步骤输出的数据中的强健包进行交织,并重建格式;交织步骤, 对从包重建步骤输出的数据进行交织;格状编码步骤,对交织的数据执行格状编码;第二RS编码步骤,对格状编码的数据中的强健包执行RS编码以变更奇偶校验,并将所述数据输入格状编码步骤;以及调制步骤,调制从格状编码步骤输出的数据,并执行RF上变换。 [0026] Further, a method of signal processing for a digital broadcasting transmitter, comprising: randomizing step of randomizing the dual TS stream of a certain format, said specific format having a normal data packet and robust data packet, the normal data packet, the stuffing byte is inserted in a particular position; stuff byte replacing step of replacing the stuff bytes of data output from the randomizing step with a predetermined known data; a first RS encoding step of stuffing bytes from Alternatively the step of performing RS encoding of data output; packet reconstruction step, the data output from the first RS encoding step is robust interleaving packets, and the reconstruction format; interleaving step, the data output from the packet reconstruction step for interleaving; lattice coding step, data is interleaved performs trellis encoding; a second RS encoding step of performing RS encoding of the robust packet trellis encoded data is changed to parity, and the data input trellis encoding step; and a modulator step of modulating the data output from the trellis encoding step, and the transformation is performed on the RF.

[0027] 与上述数字广播发射机相应的根据本发明的数字广播接收机包括:解调器,用于从数字广播发射机接收编码的信号,并将其解调,其中,通过将预定的已知数据插入填充字节被插入的双流的特定位置来编码所述编码的信号;已知数据输出部分,用于从解调的信号检测已知数据的位置,并输出所述已知数据;均衡器,用于均衡解调的信号;维特比解码器,用于使用检测的已知数据对均衡的信号进行纠错和解码;去交织器,用于对从维特比解码器输出的数据进行去交织;以及去随机化器,用于对从去交织器输出的数据进行去随机化。 [0027] The above-described digital broadcasting transmitter and the digital broadcasting receiver corresponding to the present invention comprises: a demodulator for receiving the encoded signal from the digital broadcasting transmitter and demodulating it, which has been predetermined by known data into a specific position of the double padding bytes are inserted to the encoded signal encoded; known data output part for detecting the position of the known signal from the demodulated data, and outputting the known data; equilibrium is, for equalizing the demodulated signal; Viterbi decoder, using the detected known data for equalization and error-correction decoding a signal; deinterleaver, for data output from the Viterbi decoder to be interleaving; and a derandomizer for the data output from the deinterleaver derandomizing.

[0028] 优选的是,已知数据输出部分包括:已知符号检测器,用于检测关于插入已知数据的接收的信号的特定位置的信息;段标记产生器,用于产生包括一个或更多段的数据帧,所述段用预定的标识标记指示所述特定位置;格状交织器,用于根据数字广播发射机中的编码来编码数据帧;以及已知数据提取器,用于在由标识标记指示的去交织的数据帧的特定位置插入已知数据,并将其输出。 [0028] Preferably, the known data output part includes: a known symbol detector for detecting information on the received signal inserting known data of a particular location; segment marker generator for generating comprises one or more plurality of data frame segments, the segments with a predetermined identification mark indicates that the particular location; trellis interleaver for encoding data frames according to a digital broadcast transmitter code; and a known data extractor for indicated by the identification mark a particular location deinterleaved data frame insert known data, and outputs it. [0029] 更加优选的是,已知数据输出部分将检测的已知数据输出到解调器,解调器使用已知数据来执行解调。 [0029] More preferably, the known data output part outputs the detected known data to the demodulator, the demodulator performs demodulation using the known data.

[0030] 同时,一种用于数字广播接收机的信号处理的方法包括:解调步骤,从数字广播发射机接收编码的信号,并将其解调,其中,通过将预定的已知数据插入填充字节被插入的双流的特定位置来编码所述编码的信号;已知数据输出步骤,从解调的信号检测已知数据的位置,并输出所述已知数据;均衡步骤,均衡解调的信号;解码步骤,使用检测的已知数据对均衡的信号进行纠错和解码;去交织步骤,对从解码步骤输出的数据进行去交织;以及去随机化步骤,对从去交织步骤输出的数据进行去随机化。 [0030] Meanwhile, A signal processing method for a digital broadcast receiver comprising: a demodulation step of receiving the encoded signal from a digital broadcasting transmitter and demodulating, wherein the known data predetermined by inserting padding bytes are inserted to a specific position of the double encoding of the encoded signal; known data output step, from the position of the demodulated signal detected known data, and outputting the known data; equalizing step of equalizing the demodulated signal; decoding step, using the detected known data to the equalized signal for error correction and decoding; deinterleaving step, the decoded data output from the deinterleaving step; and a de-randomizing step of de-interleaving the outputted step de-randomize the data.

[0031] 有益效果 [0031] beneficial effects

[0032] 根据本发明,数字广播发射机将填充字节插入MPEG-2TS包,用已知数据替换插入的填充字节并发送所述数据,数字广播接收机检测并使用所述已知数据。 [0032] According to the present invention, the digital broadcasting transmitter is inserted into the stuffing byte MPEG-2TS packet, the inserted stuff bytes replaced with known data and transmits the data, the digital broadcasting receiver detects and uses the known data. 因此,产生以下效果:与现有数字广播系统兼容,降低硬件的复杂度,改善较差的多径信道下数字广播接收性能。 Accordingly, the following effects: compatibility with the existing digital broadcasting system, to reduce hardware complexity, to improve the poor performance of the digital broadcast receiving multipath channel.

附图说明 BRIEF DESCRIPTION

[0033] 图1是传统的面向美国的地面波数字广播(ATSC VSB)系统的发射机的框图; [0033] FIG. 1 is a block diagram of a conventional transmitter for the American digital terrestrial broadcasting (ATSC VSB) system;

[0034] 图2是示出ATSC VSB数据的格式的示图; [0034] FIG. 2 is a diagram illustrating the format of ATSC VSB data;

[0035] 图3是示出TS包的帧结构的示图; [0035] FIG. 3 is a diagram illustrating a frame structure of a TS packet;

[0036] 图4是示出根据本发明的包括填充字节的TS包的帧结构的示图; [0036] FIG. 4 is a diagram illustrating a frame structure including padding byte TS packet according to the present invention;

[0037] 图5是根据本发明的数字广播发射机的框图; [0037] FIG. 5 is a block diagram of the digital broadcasting transmitter according to the invention;

[0038] 图6和图7是示出从图5的随机化器输出的数据的格式的示图; [0038] FIG. 6 and FIG. 7 is a diagram illustrating the format of the output from the randomizer of FIG. 5 data;

[0039] 图8和图9是示出从图5的交织器输出的数据的格式的示图; [0039] FIG. 8 and FIG. 9 is a diagram illustrating the format outputted from the interleaver of FIG. 5 data;

[0040] 图10和图11是示出从图5的格状编码器输出的数据的格式的示图; [0040] FIGS. 10 and FIG. 11 is a diagram illustrating the format of the output from the trellis encoder of FIG. 5 data;

[0041] 图12和图13是示出根据图5的格状编码器初始化重建的带有奇偶校验的数据的格式的示图; [0041] FIG. 12 and FIG. 13 is a diagram illustrating a format according to FIG. 5 trellis encoder initialization reconstructed data with parity;

[0042] 图14是根据本发明的数字广播接收机的框图;以及 [0042] FIG. 14 is a block diagram of a digital broadcast receiver according to the present invention; and

[0043] 图15是被提供以描述图10的已知数据输出部分的示图。 [0043] FIG. 15 is provided in a known data output part 10 described in FIG. FIG.

具体实施方式 Detailed ways

[0044] 以下,将参照附图详细描述本发明。 [0044] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

[0045] 图5是根据本发明的数字广播发射机的框图。 [0045] FIG. 5 is a block diagram of the digital broadcasting transmitter according to the invention. 使用菲利浦提出的图1的EVSB系统来实现图5的数字广播发射机。 To implement digital broadcasting transmitter system of Figure 5 uses EVSB Philips proposed FIG. 详细说来,在数字广播发射机中,将填充字节加入正常流或强健流的MPEG-2包中,用已知数据替换加入的填充字节,并将其发送。 In detail, in the digital broadcasting transmitter, the stuffing byte added to MPEG-2 packet of the normal stream or robust stream, the data replacement by a known padding bytes added, and transmits it. 然后,在接收机中检测所述已知数据,并用于补偿由信道产生的失真。 Then, at the receiver the known data detecting and compensating for the distortion produced by the channel.

[0046] 参照图5,数字广播发射机具有:随机化器(110),用于当正常数据和强健数据被复用并输入时,随机化所述数据;填充字节替换部分(115),用于用特定序列替换随机化的数据中的正常流或强健流的填充字节;第一RS编码器(120),用于对从填充字节替换部分(115)输出的数据执行里德-所罗门编码,以纠正由信道产生的差错;包格式器(130),用于对编码的数据中的强健数据进行交织,以1/2比率重建包,插入PID并与正常数据复用;交织器(140),用于对从包格式器(130)输出的数据进行交织;格状编码器(150),用于初始化从交织器(140)输出的数据中的填充字节的存储器值,对强健数据进行加强编码,并执行普通的2/3比率格状编码;控制器(160),用于输出控制正常数据和强健数据的信号;以及第二RS编码器(170),用于对加强编码的强健数据执行RS再编码 [0046] Referring to Figure 5, the digital broadcasting transmitter comprising: a randomizer (110) for, when the normal data and robust data are multiplexed and input, the randomized data; stuff byte replacing part (115), randomized data for replacing the normal stream or stuffing bytes with a specific sequence robust stream; a first RS encoder (120) for performing data replacement part Reid (115) output from the stuff byte - Solomon coding, to correct errors generated by channels; packet formatter (130) for the encoded data is interleaved robust data, packet reconstruction ratio of 1/2, and the normal PID inserted multiplexed data; interleaver (140), for data output from the packet formatter (130) for interleaving; trellis encoder (150) for initializing the memory stuff byte value data outputted from the interleaver (140), of strengthen the robust data coding, and performs a normal 2/3 rate trellis encoder; a controller (160), a control signal for outputting normal data and robust data; and a second RS encoder (170) for strengthening performing RS encoding of the robust data re-encoding 以与现有接收机兼容并替换奇偶校验。 To be compatible with existing receivers and replace parity.

[0047] 此外,数字广播发射机具有:填充字节控制器(125),用于产生控制填充字节的位置的信号;包缓冲器(135),用于缓冲第一RS编码器(120)的输出以用于格状编码器(150) 的数据初始化,接收根据格状编码器(150)的初始化变更的数据,并进行更新;奇偶检验重建部分(145),用于对通过所述初始化变更的数据执行RS编码以产生奇偶检验,并将产生的奇偶校验输入格状编码器(150)以替换现有奇偶校验;复用器(180),用于将场同步和段同步插入经过格状编码和映射的数据;以及调制器(190),用于将导频加入从复用器(180) 输出的信号,并执行VSB调制和RF上变换。 [0047] Further, the digital broadcasting transmitter comprising: a stuff byte controller (125), generating a signal for controlling the position of the stuff bytes; packet buffer (135) for buffering a first RS encoder (120) the output for the trellis encoder (150) the initialization data, the received data is changed according to the initialization trellis encoder (150), and the update; parity reconstruction component (145), for the initialization by performing RS encoding of data changed to generate parity, and the resulting parity input trellis encoder (150) to replace the existing parity; a multiplexer (180) for inserting a field sync and segment sync after the data mapping and trellis coding; and a modulator (190) for the pilot signals output from the addition of the multiplexer (180), and performing transform on a VSB modulation and RF.

[0048] 输入根据本发明的随机化器(110)的正常数据包或强健数据包包括插入其中的填充字节。 [0048] The input device according to the present invention, the randomizer (110) of the normal data packet or a robust data packet includes a stuffing byte is inserted therein. 图3是示出TS流包的帧结构的示图。 3 is a diagram illustrating a frame structure of a TS stream of packets. 图4是示出根据本发明的包括带有填充字节的自适应字段的MPEG-2TS流包的帧结构的示图。 FIG 4 is a diagram illustrating a frame structure of the MPEG-2TS adaptation field with stuffing byte stream comprising a packet according to the present invention. 188字节的MPEG-2包包括:包括MPEG 同步的4字节信息信号(MPEG-2头)、1字节自适应字段长度信息、1字节其它信息、η字节带有填充字节的自适应字段数据、以及“188-G+2+n),,字节ES数据。 188-byte MPEG-2 packet comprises: MPEG 4 bytes of information include synchronization signal (MPEG-2 headers), 1-byte adaptation field length information, other information of 1 byte, byte [eta] with padding bytes adaptation field data, and "188-G + 2 + n) ,, ES data bytes.

[0049] 图3的TS流包的帧包括MPEG-2头和自适应字段或ES数据。 TS stream packet frame [0049] FIG. 3 includes a header and MPEG-2 adaptation field or ES data. 如图4所示,根据本发明的正常数据包或强健数据包具有将填充字节插入自适应字段的结构,从而所有TS流包括自适应字段。 4, according to the normal data packet or a robust data packet of the present invention having stuff bytes inserted into the adaptation field structure, so that all the TS streams include the adaptation field. 输入这种MPEG-2TS包,作为图5的正常数据或强健数据。 This input packet MPEG-2TS, the normal data or robust data as in FIG. 5.

[0050] 在图5中,在强健数据预处理器(未示出)中处理强健数据,将其与正常数据复用,以发送到随机化器(110)。 [0050] In FIG. 5, in the robust data pre-processor (not shown) in processing the robust data, and normal data which is multiplexed for transmission to the randomizer (110).

[0051] 随机化器(110)随机化其中正常数据和强健数据如上所述进行复用的数据。 [0051] The randomizer (110) wherein the randomized normal data and robust data multiplexed data as described above.

[0052] 将通过随机化器(110)随机化的数据输入到填充字节替换部分(115),并且用由特定序列产生器(未示出)产生的特定序列替换正常数据和强健数据的填充字节,并将其输出。 [0052] A randomized by the randomizer (110) data is input to the stuff byte replacing part (115), and replaces the normal data and the robust data with a particular sequence (not shown) produced by a particular sequence generator filling byte, and outputs it. 特定序列是具有发射机和接收机已知的预定义模式的数据,以下将其成为“已知数据”。 The particular sequence of data having a transmitter and a receiver is known to predefined patterns, it will be "known data."

[0053] 当填充字节插入正常数据包时,图6示出从随机化器(110)输出的数据的格式,其中,用特定序列数据,即,已知数据替换插入正常数据包中的η个填充字节。 [0053] when the stuff byte into a normal data packet, FIG. 6 shows the format of the data output from the randomizer (110), wherein a particular sequence of data, i.e., known data inserted in place of the normal data packet η stuffing bytes. 参照图6,以特定间隔排列正常数据包和强健数据包,并且已知数据替换填充字节而被插入正常数据包的自适应字段。 Adaptation field 6, arranged normal data packet and robust data packet at certain intervals, and replaced with known data is inserted stuff bytes of normal data packets.

[0054] 图7示出当填充字节分别插入正常数据包和强健数据包时的数据格式,用特定序列数据,即,用已知数据替换从随机化器(110)输出的数据中的正常数据包和强健数据包中插入的η个填充字节。 [0054] FIG. 7 shows that when stuff bytes are inserted into the data format of the normal data packet and robust data packet, data for a particular sequence, i.e., replacing the data output from the randomizer (110) in a known normal data data packet and robust data packet inserted η stuffing bytes. 参照图7,以特定间隔排列正常数据包和强健数据包,并且已知数据替换填充字节而被插入正常数据包和强健数据包的自适应字段。 Referring to FIG. 7, are arranged at certain intervals the normal data packet and robust data packet and the known data is inserted to replace the stuff bytes adaptation field of the normal data packets and robust data packets.

[0055] 此外,如上所述,从随机化器(110)中输出的MPEG-2包数据的头包括第一字节的同步和3字节的PID。 [0055] As described above, MPEG-2 packet header data output from the randomizer (110) includes a 3-byte PID and a first sync byte. 特定字节自适应字段的最初2个字节包括关于自适应字段长度的信肩、ο The first 2 bytes of the adaptation field includes a specific byte letter shoulder on the adaptation field length, ο

[0056] 换言之,自适应字段的最初2个字节具有关于自适应字段中插入的填充字节,即,已知数据的长度的信息。 [0056] In other words, the first 2 bytes of the adaptation field with stuffing bytes in the adaptation field on insertion, i.e., information on the length of the known data. 由于已知数据在包中的开始位置是固定的,所以接收机可根据自适应字段的最初2个字节中插入的信息来得知关于已知数据的位置和长度,即,数量的信肩、ο Since it is known in the packet data start position is fixed, the receiver can be informed about the position and length of the known data according to the first 2 bytes of the adaptation field of information inserted, i.e., the number of letters of the shoulder, ο

[0057] 通过第一RS编码器(120)对从填充字节替换部分(11¾输出的数据进行外编码, 以纠正由信道产生的差错。由包格式器(130)对外编码的数据中的强健数据进行交织,以1/2比率重建强健数据的包,并插入PID。然后,将强健数据与正常数据复用,并在交织器(140)中对所述数据进行交织。 [0057] Data (11¾ output from the stuff byte replacing part via a first RS encoder (120) outer coding to correct errors generated by channels. By the packet formatter (130) outside robust encoded data interleaving data, the reconstruction ratio of 1/2 robust data packet, and inserts the PID. then, the normal data and the robust data multiplexing and interleaving the data in the interleaver (140).

[0058] 图8示出用已知数据替换正常数据中插入的填充字节之后,由交织器(140)进行交织的数据的格式。 After [0058] FIG. 8 shows an alternative normal data inserted stuff bytes with known data, format data interleaved by the interleaver (140). 如图8所示,通过交织器(140)以52单位来分散图6的MPEG-2包。 8, the interleaver (140) dispersed in 52 units of MPEG-2 packet of FIG. 6. 如图8所示,在数据交织之后,MPEG-2包中相同字节位置的数据构成相同的列。 8, after interleaving the data, MPEG-2 data packet in the same byte position constituting the same column.

[0059] 此外,图9示出用已知数据替换正常数据和强健数据中插入的填充字节之后,由交织器(140)进行交织的数据的格式。 After [0059] Further, FIG. 9 shows an alternative normal data and robust data inserted stuff bytes with known data, format data interleaved by the interleaver (140). 如图9所示,通过交织器(140)以52单位来分散图7的MPEG-2包。 As shown in FIG. 9, the interleaver (140) in FIG. 52 units of dispersion of 7 MPEG-2 packet. 在数据交织之后,MPEG-2包中相同字节位置的数据构成相同的列,如图9 所示。 After the interleaved data, MPEG-2 data packet in the same byte position constituting the same column, as shown in FIG. 9.

[0060] 然后,由格状编码器(150)对由交织器(140)输出的数据中的强健数据进行加强编码,并以现有的2/3比率的格状编码来处理所述数据。 [0060] Then, the data from the interleaver (140) in the robust data output by the trellis encoder (150) encoding strengthening, and is Trellis encoding of ratio 2/3 prior to processing the data.

[0061] 图10示出由格状编码器(150)对图8的数据流进行格状编码之后输出的数据格式。 [0061] FIG. 10 shows a data format used by the trellis encoder (150) output after trellis encoding of the data stream of Fig. 一场包括六个卷积交织器,从而产生六个包括填充字节的序列。 Six including a convolutional interleaver to produce sequence comprising six bytes of padding. 换言之,如果TS流具有10个填充字节,则在一场中产生“10*6 = 60”的已知符号序列。 In other words, if the TS stream having 10 stuffing bytes, known symbol sequence is generated "10 * 6 = 60" in one field.

[0062] 图11示出由格状编码器(150)对图9的数据流进行格状编码之后输出的数据格式。 [0062] FIG. 11 shows a data format used by the trellis encoder (150) output after trellis encoding a data stream of FIG. 9.

[0063] 参照图10和图11,在格状编码之后,MPEG-2包中相同字节位置的数据包括在一个数据段中。 [0063] Referring to FIGS. 10 and 11, after trellis encoding, MPEG-2 packet comprises the same byte position in a data segment. 因此,如果将填充字节连续加入MPEG-2包的特定位置并进行随机化,并且用特定序列替换填充字节并进行格状编码,则相同字节位置中插入的填充字节形成一数据段, 所述数据段为已知信号。 Thus, if a specific location is added continuously stuffing bytes MPEG-2 packet and randomizes, and replacing the stuff byte with a particular sequence and trellis coding, the same byte positions inserted stuff bytes form one data segment , the data segment is a known signal. 结果,数据广播接收机可检测并使用所述已知数据来改善接收性能。 As a result, the data broadcast receiver may detect and use the known data to improve reception performance.

[0064] 此外,第二RS编码器(170)对加强编码的强健数据执行RS再编码,以与现有接收机兼容,并执行非系统RS编码,以替换奇偶校验。 [0064] In addition, a second RS encoder (170) for strengthening the robust data re-encoding performs RS encoding to be compatible with existing receivers, and performs non-systematic RS encoding, to replace the parity.

[0065] 格状编码器(150)具有用于格状编码的存储器(未示出)。 [0065] The trellis encoder (150) having a memory (not shown) for trellis coding. 格状编码器(150)从填充字节或已知数据的开始位置执行存储器的初始化。 Initializing (150) from a start position of stuff bytes or known data memory is performed trellis encoder.

[0066] 同时,包缓冲器(13¾从第一RS编码器接收与格状编码器(150)的存储器初始化的位置相应的数据,并对其进行缓冲,随后,接收通过格状编码器(150)的存储器初始化变更的新数据,并更新先前缓冲的数据,并将更新的数据输入到奇偶校验重建部分(145)。因此,奇偶校验重建部分(14¾对根据存储器初始化变更的数据执行RS编码,以产生奇偶校验,并将产生的奇偶校验输入到格状编码器(150)以替换先前的奇偶校验。 [0066] Meanwhile, the packet buffer (13¾ received from the first RS encoder trellis encoder and the corresponding data (150) to initialize a memory location, and buffers, then, received by the trellis encoder (150 ) of the new changed data memory initialization, and updating the previously buffered data, and inputs the updated data to the parity reconstruction portion (145). Therefore, part of the parity reconstruction (14¾ performed on the data according to the memory initialization change RS encoded to generate parity, the parity of the generated input to the trellis encoder (150) to replace the previous parity.

[0067] 此外,控制器(160)输出控制正常数据和强健数据的信号,并且填充字节控制器(125)产生控制填充字节的位置的信号。 [0067] Further, the controller (160) outputs a control signal of the normal data and robust data and stuffing bytes controller (125) generates a signal to control the stuff byte location.

[0068] 如图2和图8所示,在8电平符号中映射编码的数据,将场同步和段同步插入数据格式。 [0068] As shown in FIG. 2 and FIG. 8, the encoded data is mapped in 8 level symbol, the inserted segment sync and field sync data format. 然后,由调制器(190)提供DC偏移,并执行VSB调制,以产生导频,将数据变换到RF并进行发送。 Then, DC provided by a modulator (190) offset, and perform VSB modulation to generate the pilot, the data is converted into RF and transmitted.

[0069] 同时,填充字节控制器(12¾检测图4的自适应字段长度,基于所述检测产生并输出用于指示图6到图13的填充字节或已知序列数据的位置的标记信号。 [0069] Meanwhile, the controller stuffing bytes (the length of the adaptation field of FIG. 4 12¾ detected, and the detection output is generated based on a stuffing byte 6 indicating the position of FIG. 13 or known sequence data flag signal .

[0070] 图5的格状编码器(150)在已知数据的开始位置执行12格状编码器初始化,以初始化编码器的存储器部件的值。 Trellis encoder (150) [0070] FIG. 5 performs initialization of 12 trellis encoder at the beginning of the known data, initialization of memory components to the encoder value. 通过初始化变更的数据替换先前存储在包缓冲器(135)中的值,并使用由奇偶校验重建部分(14¾根据所述变更的数据产生的新奇偶校验来替换先前奇偶校验位置的值。 Initialization data changed by replacing the previous packet buffer (135) value is stored, and uses the new parity (14¾ generated by the parity check from the data reconstruction portion of the altered parity replaces the previous position value .

[0071] 图12示出由图5的奇偶校验重建部分(145)对于具有图10所示的格式的数据进行RS编码和奇偶校验重建后的数据格式。 [0071] FIG. 12 shows a data format of the RS-encoding the data and parity reconstruction has the format shown in FIG. 10 by the parity reconstruction portion (145) of FIG. 此外,图13示出由图5的奇偶校验重建部分(145)对于具有图11所示的格式的数据进行RS编码和奇偶校验重建后的数据格式。 Further, FIG. 13 shows a data format of the RS-encoding the data and parity reconstruction has the format shown in FIG. 11 by the portion of FIG. 5 parity reconstruction (145).

[0072] 参照图12和图13,当在已知数据的符号序列的开始位置初始化格状编码器(150) 时,数据值通过所述初始化而变更,从而第一RS编码器(120)的输出奇偶校验变更。 [0072] Referring to FIGS. 12 and 13, when the initialization of the trellis encoder (150) at the beginning of the known data symbol sequence, by changing the data value is initialized to a first RS encoder (120) output parity changes. 因此, 奇偶校验重建部分(14¾用变更的奇偶校验更新先前的奇偶校验以执行格状编码,从而当稍后描述的数字广播接收机的RS解码器解码数据时将不会出现问题。 Thus, part of the parity reconstruction (14¾ changed by updating the previous parity parity to perform trellis encoding, so that the problem does not occur when the RS decoder decodes the data of the digital broadcasting receiver will be described later.

[0073] 换言之,执行格状编码器(150)的存储器初始化,以便格状编码的数据在已知数据的符号序列部分期间形成预定义的特定序列。 [0073] In other words, performs trellis encoder (150) initializes a memory for trellis coded data forming a particular sequence during a predefined symbol sequence portion of the known data. 然后,为了变更与存储器初始化位置的变更的数据相应的奇偶校验,对变更的数据执行RS编码,从而产生新奇偶校验,并且变更的奇偶校验替换先前的奇偶校验。 Then, in order to change the data corresponding to the changing position of the parity memory initialization, performing RS encoding of the data change, thereby generating a new parity and the parity of parity replaces the previous change. 图12示出根据通过存储器初始化变更的数据替换相应的奇偶校验的处理。 FIG 12 shows an alternative process in accordance with the corresponding parity data by changing the initialization of the memory.

[0074] 图14是根据本发明与图5的数字广播发射机相应的数字广播接收机的框图。 [0074] FIG. 14 is a block diagram of a digital broadcasting receiver corresponding to digital broadcasting transmitter according to the present invention in FIG. 5. 如果接收的信号包括:正常数据、强健数据和填充字节,则数字广播接收机具有用于解码它们的部件。 If the received signal comprises: normal data, and the stuffing byte robust data, the digital broadcast receiver having means for decoding thereof.

[0075] 图14的数字广播接收机包括:解调器(310),用于将RF信号降低为基带并将其解调;均衡器(320),用于删除符号间干扰;维特比解码器(330),用于修正均衡的信号中的差错并执行解码;去交织器(340);包格式器(350),用于对去交织器(340)的输出解复用,并执行包的重新格式化以及强健数据的去交织;控制信号产生器(360),用于产生控制双流的控制信号;RS解码器(370),用于对从包格式器(350)输出的数据执行纠错和解码;去随机化器(380)和已知数据输出部分G00),用于产生填充字节的位置并处理已知数据。 The digital broadcast receiver [0075] FIG. 14 comprises: a demodulator (310) for reducing the RF signal to baseband and demodulator; an equalizer (320) for deleting inter-symbol interference; Viterbi decoder (330), for correcting errors in the equalized signal and perform decoding; deinterleaver (340); the packet formatter (350), an output of the deinterleaver (340) is demultiplexed, and the execution of the package reformatting and robust data deinterleaver; a control signal generator (360) for generating a control signal for controlling the dual-stream; the RS decoder (370) for data (350) output from the packet formatter performs error correction and decoding; derandomizer (380) and a known data output part G00), for generating position of stuff bytes and known data processing.

[0076] 解调器(310)通过调谐器/IF(未示出)将经由信道接收的RF信号变换为基带信号,检测并解调转换的基带信号的同步。 [0076] The demodulator (310) through a tuner / IF (not shown) converting the RF signal received via the channel to a baseband signal, a sync detection and demodulation of the converted baseband signal. 均衡器(320)补偿解调的信号的多径信道失真。 Multipath channel equalizer (320) compensating the demodulated signal distortion.

[0077] 同时,已知数据输出部分(400)检测关于插入场同步数据段部分的保留部分中的填充字节数量的信息,以获得关于已知符号的位置信息,并从获得的位置信息输出已知数据。 [0077] Meanwhile, the known data output part (400) detects the number of bytes of padding information on the reserved portion inserted field sync data segment section in order to obtain information about the location of the known symbol, and outputs the obtained position information from the known data.

[0078] 图15示出数字广播接收机的用于检测已知数据的数据输出部分(400)。 Data output part [0078] FIG. 15 shows a digital broadcast receiver for detecting the known data (400).

[0079] 已知数据输出部分(400)包括:已知符号检测器(410)、段标记产生器(420)、格状交织器(430)和已知数据提取器040)。 [0079] The known data output part (400) comprising: a known symbol detector (410), segment marker generator (420), a trellis interleaver (430) and a known data extractor 040).

[0080] 如果关于填充字节的数量(数目)的信息被插入场同步数据段部分的保留部分, 则数字广播接收机中的已知数据输出部分(400)的已知符号检测器(410)检测所述关于已知数据的数量的信息。 [0080] If on the number of stuff bytes (number) information is reserved portion of the insertion portion of the data segment sync field, the known data output part (400) of the digital broadcasting receiver of the known symbol detector (410) detecting information on the number of known data. 基于检测的信息,段标记产生器(420)和格状交织器(430)获得关于已知符号的位置的信息。 Based on the detected information, segment marker generator (420) and trellis interleaver (430) to obtain information about the position of the known symbol. 从获得的位置信息,已知数据提取器(440)输出已知数据,以用于改善数字广播接收机的接收性能。 Position information obtained from the known data extractor (440) outputs the known data, improving reception performance for digital broadcasting receiver. 由于填充字节的位置始终是固定的,所以如果可检测到填充字节的数量,则可使用计数器和控制逻辑来实现段标记产生器(420)和格状交织器(430)。 Since the position of the stuff bytes is always fixed, so if the detected number of padding bytes, counter and control logic may be used to achieve segment marker generator (420) and trellis interleaver (430).

[0081] 也就是说,已知符号检测器010)从包括关于解调的数据头的自适应字段长度的信息的控制信息比特提取关于已知数据位置的信息。 [0081] That is, the known symbol detector 010) to extract information about known data bit position of the control information from the adaptation field length of the header includes data regarding demodulated. 关于已知数据位置的信息包括关于已知数据长度的信息。 Information about known position data comprises information about the length of the known data. 由于已知数据位置是预置的,所以可通过得知长度来获得根据已知数据的编码的已知符号的位置和数目。 Since the location of the known data is preset, it is possible to obtain the position and the number of the encoded data of known symbols known by that length.

[0082] 根据已知符号的位置和数目,段标记产生器(420)在相应的位置用与符号的数目相应的长度的预定标记进行标记,并产生至少一个段以及包括所述段的MPEG-2传输帧。 [0082] The number and position of the known symbol, segment marker generator (420) marked with the corresponding position and the number of symbols corresponding to a predetermined mark length, and generating at least one segment and the segment comprising MPEG- 2 transmission frame.

[0083] 格状交织器(430)根据数字广播发射机中的交织对段标记产生器(420)中产生的传输帧进行编码。 [0083] trellis interleaver (430) generates a transmission frame (420) generated according to a digital broadcast transmitter encodes the interleaved segment marker.

[0084] 已知数据提取器(440)在已知符号的位置插入预定义的已知数据,并输出插入已知数据的数据,其中,已知符号的位置通过在格状交织器G30)中经过编码并输出的传输帧的标记来识别。 [0084] The known data extractor (440) into a predefined position in the known data known symbol and outputs the known data inserted into the data, wherein the position of the known symbol by the Trellis interleaver G30) labeled and outputs the encoded transmission frame to identify.

[0085] 同时,通过维特比解码器(330)对由均衡器(320)均衡的信号进行纠错,并将其解码为符号数据。 [0085] Meanwhile, the equalized signal error correction by the equalizer (320) by the Viterbi decoder (330), and decoded into symbol data. 解码的数据通过去交织器(340)重新排列由图5的发射机的交织器(140) 分散的数据。 Decoded data deinterleaver (340) rearranges the dispersed by the transmitter of FIG. 5 interleaver (140) data. 由包格式器(350)对去交织的数据进行解复用,以将其划分为正常数据和强健数据。 Demultiplexing by the packet formatter deinterleaved data (350), to be divided into normal data and robust data. 强健数据经过包重新格式化以及去交织,并与正常数据一起被输入到RS解码器(370),以进行纠错。 After reformatting robust data packet and de-interleaving, and the normal data is input to the RS decoder (370) together, for error correction. 控制信号产生器(360)产生用于处理正常数据和强健数据的控制信号。 (360) generates control signals for processing normal data and robust data control signal generator. 通过去随机化器(380)对从RS解码器(370)输出的数据进行去随机化。 Derandomizing the data output from the RS decoder (370) through the derandomizer (380).

[0086] 如上所述,产生填充字节并将其插入MPEG-2TS包,用已知数据替换插入的填充字节,并从数字广播发射机将其发送。 [0086] As described above, generating and inserting padding bytes MPEG-2TS packets with known data is inserted in place of the stuff bytes, and transmits it from the digital broadcasting transmitter. 然后,数字广播接收机检测并使用所述已知数据。 Then, the digital broadcasting receiver detects and uses the known data. 因此, 可改善数字广播接收机的接收性能,诸如同步捕获和均衡性能。 Thus, reception performance can be improved digital broadcasting receiver, such as synchronization acquisition and equalization performance.

[0087] 此外,填充字节被插入现有传输帧结构,并且仅是保留的部分产生变更,从而其优点在于提供了现有系统的兼容性并且附加的硬件容易实现。 [0087] Further, stuff bytes are inserted into the existing transmission frame structure, and only partially retained generate change, so the advantage of providing compatibility with existing systems, and easy to implement additional hardware.

[0088] 根据本发明,在数字广播发射机中,将填充字节插入MPEG-2包的正常数据或强健数据,用已知数据替换插入的填充字节并将其发送,从而数字广播接收机检测并使用所述已知数据。 [0088] According to the present invention, in the digital broadcasting transmitter, a stuff byte into a MPEG-2 packet of normal data or robust data, using known data is inserted in place of the stuff bytes and sends it to the digital broadcast receiver and using the detected known data. 结果,硬件的实现并不复杂,而且可改善在较差的多径信道下的数字广播接收性能。 As a result, the hardware implementation is not complicated, and can improve the performance of the digital broadcast receiving at poor multipath channels.

Claims (36)

1. 一种数字广播发射机,包括: 随机化器,用于随机化传输流TS ;第一RS编码器,用于对TS执行RS编码;包格式器,用于对从第一RS编码器输出的数据中的强健包进行交织并重建格式; 交织器,用于对从包格式器输出的数据进行交织; 格状编码器,用于对从交织器输出的数据进行格状编码;第二RS编码器,用于对格状编码的数据中的强健包进行RS编码以变更奇偶校验,并将其输入格状编码器;以及调制器,用于调制从格状编码器输出的数据,并执行RF上变换, 其中,TS包括已知数据、正常数据和强健数据, 已知数据被接收机用于补偿信道失真,以及格状编码器具有用于格状编码的存储器,并且初始化从插入已知数据的位置输入的数据的存储器,所述数字广播发射机还包括:填充字节替换部分,用于将已知数据插入TS,其中,已知数据是具有数字广播 1. A digital broadcast transmitter comprising: a randomizer for randomizing the TS transport stream; a first RS encoder for performing RS encoding of the TS; packet formatter, for from the first RS encoder robust data output from the interleaved packet format and reconstruction; interleaver for the data output from the packet formatter for interleaving; trellis encoder for trellis coded data output from the interleaver; second RS encoder for trellis encoding of the robust data packets to change the RS-encoded parity, and inputs the trellis encoder; and a modulator for modulating the data output from the trellis encoder, and performing transform on RF, wherein, the TS including known data, normal data and robust data, the data is known by the receiver for compensating the channel distortion, and a memory having a trellis encoder for trellis encoding, and initializes the insert the memory of the known data input position data, the digital broadcasting transmitter further comprising: a stuff byte replacing part for the known data inserted into the TS, wherein the known data having a digital broadcast 射机和数字广播接收机已知的预定义模式的特定序列。 A digital broadcast receiver and transmitter of known sequence specific predefined pattern.
2.如权利要求1所述的数字广播发射机,还包括:填充字节控制器,用于产生用来指示已知数据的位置信息并控制格状编码器的存储器初始化的控制信号。 2. The digital broadcast transmitter as claimed in claim 1, further comprising: a stuff byte controller for generating position information for indicating the known data and control signals to initialize the memory of the trellis encoder.
3.如权利要求1所述的数字广播发射机,还包括:包缓冲器,用于输出并暂时存储与从第一RS编码器输出的数据中的已知数据的位置相应的数据。 The digital broadcasting transmitter as claimed in claim 1, further comprising: a packet buffer, for a respective data output and temporarily stores the position data of the known data output from the first RS encoder.
4.如权利要求3所述的数字广播发射机,其中,包缓冲器接收根据格状编码器的存储器初始化而变更的数据,并更新暂时存储的数据。 4. The digital broadcast transmitter as claimed in claim 3, wherein the packet buffer receives the data according to the memory initialization of the trellis encoder is changed, and updates the temporarily stored data.
5.如权利要求4所述的数字广播发射机,还包括:奇偶校验重建部分,用于从包缓冲器接收更新的数据,对所述数据执行RS编码以产生变更的奇偶校验,并将变更的奇偶校验输出到格状编码器,以替换由第一RS编码器加入的奇偶校验。 5. The digital broadcast transmitter as claimed in claim 4, further comprising: parity check reconstruction part for update data received from the packet buffer, performing RS encoding of the data to generate parity change, and the change to the parity trellis encoder output, is added to replace the first RS parity encoder.
6.如权利要求1所述的数字广播发射机,其中,已知数据具有带有预定义的特定模式的序列。 The digital broadcasting transmitter as claimed in claim 1, wherein, with a particular known data sequence having a predefined pattern.
7. 一种用于数字广播发射机的信号处理的方法,包括: 随机化步骤,用于随机化传输流TS ;第一RS编码步骤,用于对TS执行RS编码;包重建步骤,用于对从第一RS编码步骤输出的数据中的强健包进行交织并重建格式; 交织步骤,用于对从包重建步骤输出的数据进行交织; 格状编码步骤,用于对从交织步骤输出的数据进行格状编码; 第二RS编码步骤,用于对格状编码的数据中的强健包进行RS编码以变更奇偶校验,并将其输入格状编码步骤;以及调制步骤,用于调制从格状编码步骤输出的数据,并执行RF上变换, 其中,TS包括已知数据、正常数据和强健数据, 已知数据被接收机用于补偿信道失真,以及格状编码步骤在插入已知数据的位置输入的数据的开始位置执行格状编码的存储器的初始化,其中,已知数据是具有数字广播发射机和数字广播接收机已知 A signal processing method for a digital broadcasting transmitter, comprising: randomizing step of randomizing the TS transport stream; a first RS encoding step of performing RS encoding of the TS; packet reconstruction step of a first data output from the RS encoding step is interleaved and robust packet reconstruction format; interleaving step of the data output from the packet reconstruction step for interleaving; trellis encoding step of interleaving the data output from step trellis coding; second RS encoding step of trellis coding on the robust data packets to change the parity RS encoding, trellis encoding and input step; and a modulation step of modulating the grid outputting a coded shape data, and performs transformation on the RF, wherein, the TS including known data, normal data and robust data, the data is known by the receiver for compensating the channel distortion, and a trellis encoding step of inserting the known data initializing the memory position of the input data start position performs trellis encoding, wherein the known data is a digital broadcast transmitter and digital broadcast receiver is known 的预定义模式的特定序列。 The particular sequence of predefined patterns.
8.如权利要求7所述的方法,还包括:填充字节控制步骤,产生用来指示已知数据的位置信息并控制在格状编码步骤中的存储器初始化的控制信号。 8. The method according to claim 7, further comprising: a stuff byte control step of generating position information for indicating the known data and control signals in memory initialization of a Trellis encoding step.
9.如权利要求7所述的方法,还包括:缓冲步骤,输出并暂时存储与在第一RS编码步骤输出的数据中的已知数据的位置相应的数据。 Corresponding to the position data of known data buffering step, and temporarily stores the output of the output in the first RS encoding step data: 9. The method as claimed in claim 7, further comprising.
10.如权利要求9所述的方法,其中,缓冲步骤接收根据格状编码步骤的存储器初始化变更的数据,并更新缓冲的数据。 10. The method according to claim 9, wherein the step of buffering the received data according to the memory Trellis encoding step of initializing the change, and updates the data buffer.
11.如权利要求10所述的方法,还包括:奇偶校验重建步骤,从缓冲步骤接收更新的数据,对所述数据执行RS编码以产生变更的奇偶校验,并将所述数据输出到格状编码步骤,以替换在第一RS编码步骤中加入的奇偶校验。 11. The method according to claim 10, further comprising: a parity reconstruction step, receiving updated data from the buffer step of performing RS encoding of the data to generate parity change, and outputs the data to the trellis encoding step, the first added to replace RS parity coding step.
12.如权利要求7所述的方法,其中,已知数据具有带有预定义的特定模式的序列。 12. The method according to claim 7, wherein the known data having a particular sequence with a predefined pattern.
13. 一种数字广播接收机,包括:解调器,用于将RF信号降低为基带并将其解调;已知数据检测器,用于从解调器所接收的包括已知数据和强健数据流的数据流检测已知数据的位置,并输出已知数据; 均衡器,用于删除符号间干扰;解码器,用于纠正均衡的信号中的差错并执行解码;以及去交织器,用于对解码的信号去交织,其中,从包括格状编码器的数字广播发射机接收所述数据流,所述格状编码器具有用于执行格状编码的存储器,并从已知数据的开始位置执行存储器的初始化, 其中,强健数据流被数字广播发射机处理为相对于差错而强健, 其中,已知数据是具有数字广播发射机和数字广播接收机已知的预定义模式的特定序列。 13. A digital broadcast receiver comprising: a demodulator for reducing the RF signal and demodulates a baseband; known data detector for receiving the known data from the demodulator and comprises a robust detecting the position of the data stream of the known data of the data stream, and outputting the known data; an equalizer for deleting inter-symbol interference; a decoder, a signal for correcting errors in the equalized and perform decoding; and a deinterleaver, with to de-interleaving the decoded signal, wherein the digital broadcasting transmitter receives the data stream comprises a trellis encoder, the trellis encoder has a memory for performing trellis encoding, and data from a known starting position initialization execution memory, wherein the data stream is processed robust digital broadcasting transmitter and robust with respect to error, wherein the known data is a specific sequence having a digital broadcasting transmitter and a digital broadcast receiver known in the predefined pattern.
14.如权利要求13所述的数字广播接收机,其中,由数字广播发射机响应于用于控制已知数据插入的控制信号,将已知数据插入所述数据流的预定位置。 14. The digital broadcast receiver according to claim 13, wherein the digital broadcasting transmitter in response to a control signal for controlling the insertion of known data, known data is inserted into a predetermined position of the data stream.
15.如权利要求13所述的数字广播接收机,其中,由根据存储器重置来补偿RS奇偶校验的数字广播发射机的RS编码器来处理所述数据流。 15. The digital broadcast receiver of claim 13 wherein the processing according to the digital broadcasting transmitter memory reset to compensate the RS parity of the RS encoder of the data stream as claimed in claim.
16.如权利要求13所述的数字广播接收机,其中,由数字广播发射机将所述强健数据流处理为相对于差错而强健,并随后将其在所述数据流中进行复用。 16. The digital broadcast receiver according to claim 13, wherein, by the digital broadcast transmitter to the robust data stream processing and robust with respect to error, and subsequently multiplexed in the data stream.
17.如权利要求13所述的数字广播接收机,其中,所述处理器还包括:控制信号产生器,用于控制解复用器来处理所述数据流中的正常数据和强健数据流。 17. The digital broadcast receiver according to claim 13, wherein said processor further comprises: a control signal generator for controlling the demultiplexer processes the data stream with the normal data and robust data stream.
18.一种由数字广播接收机来处理流的方法,所述方法包括: 将RF信号降低为基带并将其解调;从包括已知数据和强健数据流的数据流检测已知数据的位置,并输出已知数据; 删除符号间干扰;纠正均衡的信号中的差错并执行解码;以及对解码的信号去交织,其中,从包括格状编码器的数字广播发射机接收所述数据流,所述格状编码器具有用于执行格状编码的存储器,并从已知数据的开始位置执行存储器的初始化, 其中,强健数据流被数字广播发射机处理为相对于差错而强健, 其中,已知数据是具有数字广播发射机和数字广播接收机已知的预定义模式的特定序列。 18. A method of processing a digital broadcast stream to the receiver, the method comprising: reducing the RF signal to baseband and demodulating; from a data stream including detecting the known data and the known data location of the robust data stream and outputting the known data; deleting inter-symbol interference; correcting errors in the equalized signal and perform decoding; and the de-interleaving the decoded signal, wherein receiving the data stream from the trellis encoder includes a digital broadcasting transmitter, the trellis encoder has a memory for performing trellis coding, and from the known starting position of initialization data is performed in the memory, wherein the data stream is processed robust digital broadcasting transmitter and robust with respect to error, which is known data is a specific sequence having a digital broadcasting transmitter and the digital broadcasting receiver known in predefined patterns.
19.如权利要求18所述的方法,其中,由数字广播发射机响应于用于控制已知数据插入的控制信号,将已知数据插入所述数据流的预定位置。 19. The method according to claim 18, wherein the control signal is inserted in the known data for controlling a predetermined position of the known data inserted into the data stream by the digital broadcast transmitter in response.
20.如权利要求18所述的方法,其中,由根据存储器重置来补偿RS奇偶校验的数字广播发射机的RS编码器来处理所述数据流。 20. The method according to claim 18, wherein the digital broadcasting transmitter to compensate for the RS parity according to RS encoder memory reset process to the data stream.
21.如权利要求18所述的方法,其中,由数字广播发射机将所述强健数据流处理为相对于差错而强健,并随后将其在所述数据流中进行复用。 21. The method according to claim 18, wherein, by the digital broadcast transmitter to the robust data stream processing and robust with respect to error, and subsequently multiplexed in the data stream.
22.—种数字广播接收机,包括:解调器,用于将RF信号降低为基带并将其解调;已知数据检测器,用于从解调器所接收的包括已知数据和强健数据流的数据流检测已知数据的位置,并将已知数据输出到均衡器; 均衡器,用于删除符号间干扰;解码器,用于纠正均衡的信号中的差错并执行解码;以及去交织器,用于对解码的信号去交织,其中,从包括格状编码器的数字广播发射机接收所述数据流,所述格状编码器具有用于执行格状编码的存储器,并从已知数据的开始位置执行存储器的初始化,其中,所述强健数据流是由数字广播发射机进行RS编码,交织和包格式化的流, 其中,已知数据是具有数字广播发射机和数字广播接收机已知的预定义模式的特定序列。 22.- kind digital broadcast receiver, comprising: a demodulator for reducing the RF signal and demodulates a baseband; known data detector for received from the demodulator includes a known data and robust detecting the position of the data stream of the known data stream data, and outputs the known data to the equalizer; an equalizer for deleting inter-symbol interference; a decoder, a signal for correcting errors in the equalized and perform decoding; and to interleaver for de-interleaving the decoded signal, wherein the trellis encoder comprising receiving the data stream of the digital broadcasting transmitter, the trellis encoder has a memory for performing trellis coding, and from the known starting position of initialization data is performed in the memory, wherein the data flow is robust RS-encoding the digital broadcast transmitter, interleaving, and formatting the packet stream, wherein the known data is a digital broadcast transmitter and digital broadcast receiver the particular sequence of known predefined patterns.
23.如权利要求22所述的数字广播接收机,其中,由数字广播发射机响应于用于控制已知数据插入的控制信号,将已知数据插入所述数据流的预定位置。 23. The digital broadcast receiver according to claim 22, wherein the digital broadcasting transmitter in response to a control signal for controlling the insertion of known data, known data is inserted into a predetermined position of the data stream.
24.如权利要求22所述的数字广播接收机,其中,由根据存储器重置来补偿RS奇偶校验的数字广播发射机的RS编码器来处理所述数据流。 24. The digital broadcast receiver according to claim 22, wherein the digital broadcasting transmitter to compensate for the RS parity according to RS encoder memory reset process to the data stream.
25.如权利要求22所述的数字广播接收机,其中,包格式化操作为由数字广播发射机的包格式器将包标识符PID插入强健数据流。 The digital broadcast receiver according to claim 25. 22, wherein the packet format by the operation of the packet format of the digital broadcasting transmitter will insert the packet identifier PID robust data stream.
26.如权利要求22所述的数字广播接收机,其中,包格式化操作为由数字广播发射机的包格式器来复制强健数据流。 26. The digital broadcast receiver according to claim 22, wherein the packet formatting operation by the packet formatter to copy digital broadcasting transmitter robust data stream.
27.如权利要求22所述的数字广播接收机,其中,包格式化操作为由数字广播发射机的包格式器来重建强健数据流的格式以插入正常包之间。 27. The digital broadcast receiver according to claim 22, wherein the packet formatting operation by the packet formatter digital broadcasting transmitter to reconstruct the robust data stream format to be inserted between a normal packet.
28.如权利要求22所述的数字广播接收机,其中,由数字广播发射机在RS编码、交织和包格式化操作之后,将所述强健数据流在所述数据流中进行复用。 28. After the digital broadcast receiver according to claim 22, wherein the RS encoding in the digital broadcasting transmitter, interleaving, and formatting packages operation, the robust data stream in the multiplexed data stream.
29.如权利要求22所述的数字广播接收机,其中,所述处理器还包括:控制信号产生器,用于产生用于处理所述数据流中的正常数据和强健数据流的控制信号。 29. The digital broadcast receiver according to claim 22, wherein said processor further comprises: a control signal generator for generating a control signal for processing the data stream with the normal data and robust data stream.
30. 一种由数字广播接收机来处理流的方法,所述方法包括: 将RF信号降低为基带并将其解调;从包括已知数据和强健数据流的数据流检测已知数据的位置,并输出已知数据; 删除符号间干扰;纠正均衡的信号中的差错并执行解码;以及对解码的信号去交织,其中,从包括格状编码器的数字广播发射机接收所述数据流,所述格状编码器具有用于执行格状编码的存储器,并从已知数据的开始位置执行存储器的初始化,其中,所述强健数据流是由数字广播发射机进行RS编码、交织和包格式化的流, 其中,已知数据是具有数字广播发射机和数字广播接收机已知的预定义模式的特定序列。 30. A method of processing a digital broadcast stream to the receiver, the method comprising: reducing the RF signal to baseband and demodulating; from a data stream including detecting the known data and the known data location of the robust data stream and outputting the known data; deleting inter-symbol interference; correcting errors in the equalized signal and perform decoding; and the de-interleaving the decoded signal, wherein receiving the data stream from the trellis encoder includes a digital broadcasting transmitter, the trellis encoder has a memory for performing trellis coding, and from the known starting position of initialization data is performed in the memory, wherein the data flow is robust RS-encoding the digital broadcast transmitter, interleaving, and formatting packages stream, wherein the known data is a specific sequence having a digital broadcasting transmitter and the digital broadcasting receiver known in predefined patterns.
31.如权利要求30所述的方法,其中,由数字广播发射机响应于用于控制已知数据插入的控制信号,将已知数据插入所述数据流的预定位置。 31. The method according to claim 30, wherein the known data is inserted in the control signal for controlling the predetermined position of the known data inserted into the data stream by the digital broadcast transmitter in response.
32.如权利要求30所述的方法,其中,由根据存储器重置来补偿RS奇偶校验的数字广播发射机的RS编码器来处理所述数据流。 32. The method of claim 30, wherein the compensation by the RS encoder RS ​​parity memory reset digital broadcasting transmitter according to process the data stream.
33.如权利要求30所述的方法,其中,包格式化操作为由数字广播发射机的包格式器将包标识符PID插入强健数据流。 33. The method of claim 30, wherein the packet format by the operation of the packet format of the digital broadcasting transmitter will insert the packet identifier PID robust data stream.
34.如权利要求30所述的方法,其中,包格式化操作为由数字广播发射机的包格式器来复制强健数据流。 34. The method of claim 30, wherein the packet formatting operation by the packet formatter to copy digital broadcasting transmitter robust data stream.
35.如权利要求30所述的方法,其中,包格式化操作为由数字广播发射机的包格式器来重建强健数据流的格式以插入正常包之间。 35. The method of claim 30, wherein the packet formatting operation by the packet formatter digital broadcasting transmitter to reconstruct the robust data stream format to be inserted between a normal packet.
36.如权利要求30所述的方法,其中,由数字广播发射机在RS编码、交织和包格式化操作之后,将所述强健数据流在所述数据流中进行复用。 36. The method according to claim 30, wherein the RS encoding in the digital broadcasting transmitter, and a packet formatting operations after interleaving, the robust data stream in the multiplexed data stream.
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