CN101719974B - 数字广播发射机 - Google Patents

数字广播发射机 Download PDF

Info

Publication number
CN101719974B
CN101719974B CN2009102040125A CN200910204012A CN101719974B CN 101719974 B CN101719974 B CN 101719974B CN 2009102040125 A CN2009102040125 A CN 2009102040125A CN 200910204012 A CN200910204012 A CN 200910204012A CN 101719974 B CN101719974 B CN 101719974B
Authority
CN
China
Prior art keywords
data
digital broadcast
signal
transmitter
given
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2009102040125A
Other languages
English (en)
Other versions
CN101719974A (zh
Inventor
丁海主
张龙德
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of CN101719974A publication Critical patent/CN101719974A/zh
Application granted granted Critical
Publication of CN101719974B publication Critical patent/CN101719974B/zh
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/015—High-definition television systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/04—Modulator circuits; Transmitter circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/86—Arrangements characterised by the broadcast information itself
    • H04H20/95—Arrangements characterised by the broadcast information itself characterised by a specific format, e.g. MP3 (MPEG-1 Audio Layer 3)
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H40/00—Arrangements specially adapted for receiving broadcast information
    • H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
    • H04H40/27—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/09—Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
    • H04H60/11—Arrangements for counter-measures when a portion of broadcast information is unavailable
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0064—Concatenated codes
    • H04L1/0065—Serial concatenated codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0071—Use of interleaving
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
    • H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
    • H04N19/88—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving rearrangement of data among different coding units, e.g. shuffling, interleaving, scrambling or permutation of pixel data or permutation of transform coefficient data among different blocks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
    • H04N21/23611—Insertion of stuffing data into a multiplex stream, e.g. to obtain a constant bitrate
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
    • H04N21/23614—Multiplexing of additional data and video streams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2383—Channel coding or modulation of digital bit-stream, e.g. QPSK modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/242—Synchronization processes, e.g. processing of PCR [Program Clock References]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
    • H04N21/4305—Synchronising client clock from received content stream, e.g. locking decoder clock with encoder clock, extraction of the PCR packets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
    • H04N21/4348—Demultiplexing of additional data and video streams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving MPEG packets from an IP network
    • H04N21/4382—Demodulation or channel decoding, e.g. QPSK demodulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0057—Block codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0059—Convolutional codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
    • H04L2025/03375—Passband transmission
    • H04L2025/03382—Single of vestigal sideband

Abstract

本发明公开了一种数字广播发射机，其将数据发送到数字广播接收机，所述数字广播发射机包括：已知数据交换器，用于将已知数据插入到数据中的特定位置；格编码器，用于以2/3的速率将包括具有规定字节长度的已知数据的数据格编码成8级符号；以及调制器，用于对格编码后的数据执行VSB调制，其中，所述已知数据是在数字发射机和数字广播接收机之间已知的预定义的序列。即使在多路径信道中、通过在数字广播接收机中从所接收的信号中检测已知数据并在同步和均衡处理中使用该已知数据可以改进数字广播发射/接收系统的接收性能。

Description

数字广播发射机
本申请是国际申请日为2005年1月20日、中国申请号为200580003120.6、发明名称为“具有改进接收性能的数字广播发射/接收系统及其信号处理方法”的发明专利申请的分案申请。 
技术领域
本发明涉及一种数字广播发射/接收系统及其信号处理方法，具体地说，涉及一种能够通过将已知序列插入VSB(残留边带)数据流中并利用所插入的已知序列发射该数据流从而改进该系统接收性能的数字广播发射/接收系统及其信号处理方法。 
背景技术
属于美国类型数字陆地广播系统的ATSC(先进电视系统委员会)VSB系统是一种信号载波型广播系统，其使用以312段(segment)为单位的场同步信号。 
图1的框图示出了作为通用美国类型数字陆地广播系统的ATSC DTV标准的发射机/接收机的结构。 
图1所示的数字广播发射机包括：随机函数发生器(randomizer)110，用于随机化MPEG-2(运动图像专家组)转送数据流(TS)；RS(Reed Solomon)编码器120，用于将RS奇偶字节加到所述转送流上以便校正由于在转送处理中信道特性而发生的位误差；交织器130，用于根据规定的模式交织经RS编码的数据；和格编码器140，用于通过以2/3的速率执行交织的数据的格解码而将交织的数据映射到8级符号上。所述数字广播发射机执行MPEG-2转送流的误差校正编码。 
所述数字广播发射机还包括：多路复用器150，用于将段同步信号和场同步信号插入经过误差校正编码的数据中；调制器/RF转换器160，用于将导频音插入所述数据符号中，通过将规定的DC值插入所述数据符号中，该数据符号还被插入段同步信号和场同步信号，调制器/RF转换器160通过对所 述数据符号执行脉冲整形执行所述数据符号的VSB调制，并将经过调制的数据符号向上转换成RF信道频带信号，以便发射该RF信道频带信号。 
因此，所述数字广播发射机随机化MPEG-2转送数据流，经过是外部编码器的RS编码器120外部编码随机化的数据，并经过交织器130分布编码的数据。另外，所述数字广播发射机经过格编码器140以12符号为单位内部编码经过交织的数据，执行经内部编码的数据到所述8级符号(8-level symb01)的映射，将所述场同步信号和段同步信号插入编码的数据中，执行数据的VSB调制，然后将调制的数据向上转换成RF信号以输出该RF信号。 
期间，图1所示的数字广播接收机包括：调谐器210，用于将经过信道接收的RF信号向下转换成基带信号；调制器220，用于执行转换后基带信号的同步检测和解调；均衡器230，用于补偿由于多径而发生的解调信号的信道失真；格解码器240，用于校正均衡后信号的误差并将该均衡后信号解码为符号数据；解交织器250，用于重排由该数字广播发射机的交织器130所分布的数据；RS解码器260，用于校正误差；以及，去随机函数发生器270，用于去随机化经过RS解码器260校正的数据，并输出MPEG-2转送流。 
因此，图1所示的数字广播接收机将所述RF信号下转换成基带信号，解调和均衡转换后的信号，然后，信道解码经解调的信号以便恢复成原始信号。 
图2示出了在美国类型数字广播(8VSB)系统中使用并被插入段同步信号和场同步信号的VSB数据帧。 
如图2所示，一个帧由两个场组成，一个场由作为第一段的一个场同步段和312个数据段组成。另外，VSB数据帧中的一个段对应于一个MPEG-2分组，并由4个符号的段同步信号和828个数据符号组成。 
在图2中，所述段同步信号和场同步信号被用于所述数字广播接收机的同步和均衡。即，场同步信号和段同步信号是指在数字广播发射机和接收机之间已知的数据，当在接收机方执行均衡时，其被用做参考信号。 
如图1所示，美国类型的数字地面广播系统的VSB系统是一种单载波系统，所以具有在具有多普勒效应的多径衰落环境中很弱的缺点。因此，接收机的性能受到用于消除所述多径的均衡器的极大影响。 
但是，根据图2所示的现有的传送帧，由于作为均衡器参考信号的场同步信号每313个段出现一次，所以，其频率相对于一帧信号是相当低的，这使得均衡的性能降低。 
特别是，现有技术的均衡器很难如上所述使用少量数据估计所述信道和通过消除所述多径均衡所接收的信号。因此，传统数字广播接收机的缺点是在差的信道环境、特别是在多普勒面向信道环境中的接收性能降低。 
发明内容
本发明就是为了解决上述缺点和与传统配置相关的其它问题而开发的。 
因此，本发明提供一种通过在发射机方产生和发射具有被加有已知数据的传送信号并在接收机方检测该传送信号来改进所述系统的接收性能的数字广播发射/接收系统及其信号处理方法。 
本发明附加的方面和优点部分地将从下面的描述中看到，部分地将从下面的描述中变得明显，和部分地将从本发明的实践中学习到。 
通过提供下述的数字广播接收机可以基本实现本发明的前述和其它方面，所述数字广播发射机包括：随机函数发生器，用于随机化具有在规定位置处插入空字节的输入数据流；多路复用器，用于输出通过将规定的已知数据插入被随机化数据流的空字节位置处所形成的数据流；编码器，用于编码从所述多路复用器输出的所述数据流；和调制器/RF转换器，用于调制所述编码数据、RF转换经过调制的数据和发射经过RF转换的数据。 
另外，提供数据发生器，用于通过产生具有预定模式的序列来产生所述已知数据。所述数据流包括与被插入由空字节的规定位置相关的信息。 
所述信息被插入前于被插入空字节的位置处，并包含与所述空字节的长度相关的信息。 
所述编码器具有：Reed-Solomon编码器，用于将规定字节的奇偶校验位加到所述数据中，以便校正由于信道而发生的误差；交织器，用于以规定的模式交织被加的奇偶校验的数据；和格编码器，用于通过以2/3的速率(rate)对经过交织的数据执行格编码而将经过交织的数据转换成8级符号。 
所述交织器输出已知数据的连续数据流，其被插入从所述多路复用器输出的多个不同数据流的相同位置处。 
所述调制器/RF转换器利用残留边带(VSB)调制方法调制所述数据。 
还可以通过提供一种用于数字广播发射的信号处理方法来实现本发明的前述和/或其它的方面和优点，该方法包括：随机化具有在规定位置处插入空字节的输入数据流；输出通过将规定的已知数据插入被随机化数据流的空字节位置中所形成的数据流；编码所述数据流，以用于误差校正；和调制编码 数据、RF转换经过调制的数据和发射经过RF转换的数据。 
还可以通过提供一种数字广播接收机来实现本发明的前述和/或其他方面和优点，该数字广播接收机包括：调谐器，用于接收具有在规定位置插入已知数据的信号，并将所接收的信号转换成基带信号；解调器，用于解调所述广播信号；均衡器；用于均衡经过解调的信号；和已知数据检测器，用于从经过均衡的信号中检测所述已知数据并输出检测到的已知数据给所述均衡器，所述均衡器使用从所述已知数据检测器输出的已知数据来均衡所述信号。 
所述已知数据包含具有预定模式的序列。 
所述已知数据检测器可以包括：至少一个关联器，用于计算所接收的信号与至少一个参考信号的关联值；和比较器，用于通过比较从所述关联器输出的关联值来检测所述已知数据。 
所述参考信号是通过编码包括所述已知数据的信号产生的输出值。 
所述已知数据检测器输出检测到的已知数据给所述解调器，该解调器使用该已知数据执行解调。 
还可以通过提供一种用于数字广播接收的信号处理方法实现本发明的前述和/或全体方面和优点，该信号处理方法包括：接收具有被插入规定位置的已知数据的信号，并将所接收的信号转换成基带信号；解调所述基带信号；均衡经过解调的信号；从经过均衡的信号中检测所述已知数据；和使用检测到的已知数据均衡所述信号。 
还可以通过提供一种数字广播发射机来实现本发明的前述和/或其他方面和优点。所述数字广播发射机将数据发送到数字广播接收机。所述数字广播发射机包括：第一多路复用器，用于将已知数据插入到经随机化的数据流中的空字节的位置，其中，所述空字节的位置是指经随机化的数据流中的规定位置，所述已知数据是在数字广播发射机和数字广播接收机之间已知的预定义的序列；里德-所罗门RS编码器，用于对包括已知数据的数据进行RS编码，以向其添加规定字节的奇偶校验位；交织器，用于交织经RS编码的数据；格编码器，用于以2/3的速率将包括具有规定字节长度的已知数据的已交织数据格编码成8级符号；第二多路复用器，用于以段为单位将段同步信号、以场为单位将场同步信号、以及在频谱中将导频信号插入到经格编码的数据中；以及调制器/RF转换器，用于对格编码后的数据执行VSB调制，RF转换经过调制的数据并发送经过RF转换的数据。所述已知数据被用于数字 广播接收机的同步和均衡。所述经格编码的数据包括这样的数据格式：在经VSB调制的经格编码的数据的数据流的一个场中出现6个已知数据序列。 
如上所述，根据本发明的各实施例，通过在数字广播发射机中产生和插入空字节到MPEG-2传送数据流并发射已经插入已知数据以取代所述空字节的传送数据流和通过在数字广播接收机中从所接收的信号中检测所述已知数据并在同步和均衡中使用该已知数据，即使是在多径信道中也能够改进诸如同步和均衡的数字广播发射/接收系统的接收性能。 
另外，根据本发明的各实施例，可以通过适当调节插入所述传送数据流中的已知数据序列的量和模式来改进所述均衡器的操作性能，从而，改进所述数字广播发射/接收系统的接收性能。 
附图说明
通过结合附图对本发明某些实施例的详细描述，本发明的上述方面和优点将变得更加清楚。其中： 
图1的框图示出了普通美国类型数字广播(ATSC VSB)系统的发射/接收系统的结构； 
图2示出了ATSC VSB数据帧的结构； 
图3的框图示出了根据本发明实施例的数字广播发射/接收系统的结构； 
图4示出了根据本发明的MPEG-2分组数据的格式； 
图5示出了被随机化的MPEG-2分组数据的格式； 
图6示出了从图3所示的RS编码器输出的数据的格式； 
图7示出了从图3所示的交织器输出的数据的格式； 
图8示出了从图3所示的格编码器输出的数据的格式； 
图9示出了图3所示的已知数据位置检测器的结构； 
图10的流程用于解释根据本发明实施例的数字广播发射机的操作；和 
图11的流程用于解释根据本发明实施例的数字广播接收机的操作。 
具体实施方式
下面将参照附图说明本发明的某些实施例。 
在下面的说明中，相同的附图参考数字用于相同的元件，即使是在不同的附图中。在说明书中没有诸如结构和元件的详细说明但提供了一些以帮助 对本发明的进一步理解。因此，很明显，可以在没有这些说明的情况下执行本发明。另外，由于不必要的公知功能和结构的描述将使本发明变得不明显，所以，不再详细描述这些公知的功能和结构。 
图3的框图示出了根据本发明实施例的数字广播发射/接收系统的结构。 
参看图3，所述数字广播发射机包括数据发生器305、随机函数发生器310、第一多路复用器(multiplexer)315、RS编码器320、交织器330、格编码器340、第二多路复用器350和调制器/RF转换器360。 
随机函数发生器310随机化输入MPEG-2传送数据，以便提高所分配信道空间的效用。输入给随机函数发生器310的数据具有通过将具有规定字节长度但不包括典型数据的空字节插入所述输入传送数据流数据的规定位置中所形成的数据格式，这将在下面详细说明。 
数据发生器305产生在发射机方和接收机方之间预先安排的数据(此后称之为‘已知数据’)。该已知数据指代具有规定模式的特殊序列，并被插入添加随机化数据的空字节的位置中。可以从普通数据中很容易地检测到所述已知数据，因此，其被用于接收机方的同步和均衡。 
第一多路复用器315产生数据流，该数据流具有由数据发生器305产生并插入已经被插入有所述空字节的数据流的位置中以取代由随机函数发生器310随机化的所述数据的空字节的已知数据。 
RS编码器320将规定字节的奇偶校验位加到从第一多路复用器320输出的数据上，以便校正由于信道所发生的误差。 
交织器330根据规定的模式对已经被加了从RS编码器320输出的奇偶校验位的数据执行交织。 
格编码器340将从交织器330输出的数据转换成数据符号，并经过格编码以2/3的速率执行所述数据的8级符号映射。 
第二多路复用器350以段为单位将段同步信号插入已经由格编码器340转换成符号的数据中，并以场为单位将场同步信号插入所述数据中。另外，第二多路复用器350通过将规定的DC值加到规定电平(specified level)的数据信号上而将导频信号插入频谱低频带的边缘部分。 
调制器/RF转换器360通过执行所述信号的脉冲整形和利用中频(IF)载波调制所述信号对已经插入导频信号的信号进行VSB调制，RF转换和放大经调制的信号，并经过所分配的信道发射经过转换的信号。 
同时，图3所示的数字广播接收机包括调谐器410、解调器420、均衡器430、格解码器440、去交织器450、RS解码器460、去随机函数发生器470和已知数据检测器480，并执行与图3所示数字广播发射机相反处理的操作。 
调谐器410选择所接收的信号并将所选择的频带信号转换成基带信号。 
解调器420从所述基带信号中检测同步信号，并根据插入基带信号中的同步信号和导频信号执行基带信号的解调。均衡器430通过补偿由于信道多径而导致解调信号的信道失真来消除所接收符号之间的相互干扰。 
格解码器440执行所述符号的误差校正，解码误差校正的符号，并输出符号数据。去交织器450重排由所述数字广播发射机的交织器330所分配的解码数据。 
RS解码器460对去交织的数据执行误差校正，去随机函数发生器470对经过RS解码器460校正的数据执行去随机化，从而，恢复所述MPEG-2传送流的数据。 
同时，已知数据检测器480根据所述解调的数据检测已知数据的位置并输出被用于解调器的同步检测和均衡器的信道失真补偿的已知数据，已知数据检测器480的详细内容将在下面解释。 
图4示出了根据本发明的MPEG-2分组数据格式。参看图4，MPEG-2分组数据的头标由是同步信号的第一字节和包括PID(分组识别符)的三个字节组成。然后，安排由规定字节组成的修改场部分，和所述修改场部分的前两个字节构成了包括所述修改场的长度信息的控制信息位。 
另外，在两个字节的控制信息位之后安排了规定数量的空字节，与所述空字节的位置相关的信息被插入所述控制信息位。由于所述空字节的开始位置是固定的，所以与所述空字节位置相关的信息表示与该空字节的长度相关的信息。在所述空字节之后，安排有将被发射的有效负荷数据。 
图5示出了插入已知数据的随机化的MPEG-2分组数据格式。参看图5，第一多路复用器315将由数据发生器305产生的已知数据插入由随机函数发生器310随机化的数据中的空字节的位置处，并输出具有图4所示格式的数据流。 
虽然为简便起见图5示出了由两个字节组成的已知数据，但所述已知数据的长度可以长于两个字节。由于该已知数据是作为发射机方和接收机方之间已知的数据在随机化之后插入的，因此，可以很容易从有效负荷数据中加 以区别地被检测，并用于接收机方的同步和均衡。 
图6示出了从图3所示RS编码器输出的数据格式。RS编码器320将规定字节的奇偶校验位加到从第一多路复用器315输出的数据上，以便校正由于信道所发生的误差。参看图6，20字节的RS奇偶校验位被加到从RS编码器320输出的187字节数据流的末端部分。 
图7示出了从图3的交织器输出的数据格式。交织器330在时间轴上分配数据，从而分配所述数据流的顺序和使传送信号相对于干扰变得很强。 
根据由交织器330执行的该数据分配，在垂直方向上不同段相同位置处安排的数据字节被重新以52字节为单位在水平方向安排成连续的数据流。 
由包括图6所示已知数据位置信息的控制信息位组成的各段的第四和第五字节被改变成在图7所示水平方向连续的数据流(即，M56～M5(B3)和M57～M6(B4))。因此，所述控制信息位是连续输出的。 
另外，在交织后，是已知数据的各段的第五和第六字节被改变成图7所示的在水平方向上连续的数据流(即，M58～M7(B5)和M59～M8(B6))。因此，插入各段中的已知数据的相同字节被以52字节为单位作为连续数据流而输出。 
图8示出了从图3的格编码器340输出的数据格式。格编码器340将从交织器330输出的每个数据字节编码成4个8级符号。 
在图8中，相同位置的已知数据字节在每52个段的一个段中作为规定长度的连续符号出现。另外，在一个场中，出现6个已知数据序列。即，在场中，包括10个空字节的10*6＝60个已知数据序列出现在传送流的一个场中。因此，可以很容易从有效负荷数据流中检测出该已知数据序列。 
图9示出了图3的已知数据位置检测器480的结构。 
图3的数字广播接收机的已知数据位置检测器480包括第一关联器480-1、第二到第n关联器480-2到480-n以及比较器483。 
第一关联器480-1以及第二到第n关联器480-2到480-n计算在所接收信号的数据流与规定的参考信号之间的关联值。在第一关联器480-1和第二到第n关联器480-2到480-n中使用的参考信号表示在发射机方已知数据编码期间可能发生的所有情况的数量。 
即，发射机方的格编码器340根据存储在自己存储器中的初始值经过相同已知数据的格编码产生不同的符号。所述存储器中可能的初始值的数量是 例如4的有限数，因此，通过执行已知数据的格编码所获得的数据符号可以被有限地确定和容易地计算。 
因此，使用第一关联器480-1和第二到第n关联器480-2到480-n，可以计算表示所有可能情况数量的多个参考信号和所接收信号之间的关联值。 
比较器483比较第一关联器480-1和第二到第n关联器480-2到480-n的输出值，如果在比较期间产生峰关联值，那么，在产生该峰值的位置处检测已知数据。 
图10的流程用于解释图3的数字广播发射机的操作。 
随机函数发生器310随机化包括空字节的MPEG-2传送流(操作S510)。输入给随机函数发生器310的数据具有图4所示的数据格式，其包括由是同步信号的第一字节组成的头标部分和3字节PID、包括与所述空字节位置相关信息的2字节控制信息位以及由规定长度字节组成的空字节。所述数据的其它字节涉及将被发送的有效负荷数据。 
然后，第一多路复用器315通过将由数据发生器305产生的已知数据插入包括在由随机函数发生器310随机化的数据中的空字节的位置而产生所述数据流(操作S520)。所述已知数据是在发射机方和接收机方之间具有已知规定模式的特殊序列，并能够很容易从普通数据中加以区别地检测。 
然后，为了校正由于信道而发生的已经被插入了已知数据的数据误差，规定字节的奇偶校验位被加到由第一多路复用器320输出的数据，然后以所述规定的模式对其进行交织。交织后的数据被转换成符号、以2/3的速率经过所述格编码被映射为8级符号、然后进行误差校正编码(操作S530)。 
然后，以段为单位将所述段同步信号插入所述符号数据中，以场为单位插入场同步信号，然后将所述导频信号插入频谱中(操作S540)。 
然后，经过调制器/RF转换器360以插入导频信号的信号被脉冲整形的方式执行所述数据信号的VSB调制并利用IF载波执行幅度调制。所述VSB调制信号经过RF转换、放大然后经过所分配的信道发送(操作S550)。 
图11的流程用于解释根据本发明数字广播接收机的操作。 
调谐器410选择所接收的信号，将所选择的频带信号转换成基带信号(操作S610)。 
解调器420从所述基带信号中检测所述同步信号并根据插入基带信号中的导频信号和同步信号执行所述基带信号的解调(操作S620)。 
均衡器430通过对被解调信号的信道失真进行补偿消除在所接收数据信号之间的相互干扰(操作S630)。 
同时，已知数据检测器480从均衡的数据中检测已知数据的位置，输出已知数据(操作S640)。已知数据检测器480的第一关联器480-1和第二到第n关联器480-2到480-n计算多个参考信号和所接收信号之间的关联值。比较器483比较所述关联值、在产生峰关联值的位置处检测已知数据、和将所检测到的已知数据提供给均衡器430以补偿信道失真。另外，可以提供检测到的已知数据以用于解调器420的同步检测。 
然后，对同步和均衡的数据执行误差校正，解码经过误差校正后的符号。经过去交织以及经过RS解码进行误差校正来重排解码的数据(操作S650)。 
然后，将经过误差校正的数据去随机化，而后作为MPEF-2传送流输出(操作S660)。 
产业应用 
本发明涉及一种数字广播发射/接收系统及其信号处理方法，特别是，涉及一种能够通过将已知序列插入VSB(残留边带)数据流中并利用所插入的已知序列发射所述数据流的数字广播发射/接收系统及其信号处理方法。 

Claims (3)

1.一种数字广播发射机，其将数据发送到数字广播接收机，所述数字广播发射机包括：
第一多路复用器，用于将已知数据插入到经随机化的数据流中的空字节的位置，其中，所述空字节的位置是指经随机化的数据流中的规定位置，所述已知数据是在数字广播发射机和数字广播接收机之间已知的预定义的序列；
里德-所罗门RS编码器，用于对包括已知数据的数据进行RS编码，以向其添加规定字节的奇偶校验位；
交织器，用于交织经RS编码的数据；
格编码器，用于以2/3的速率将包括具有规定字节长度的已知数据的已交织数据格编码成8级符号；
第二多路复用器，用于以段为单位将段同步信号、以场为单位将场同步信号、以及在频谱中将导频信号插入到经格编码的数据中；以及
调制器/RF转换器，用于对格编码后的数据执行VSB调制，RF转换经过调制的数据并发送经过RF转换的数据，
其中，所述已知数据被用于数字广播接收机的同步和均衡，并且
其中，所述经格编码的数据包括这样的数据格式：在经VSB调制的经格编码的数据的数据流的一个场中出现6个已知数据序列。
2.如权利要求1所述的数字广播发射机，还包括随机化器，用于随机化所述数据，以产生所述经随机化的数据流。
3.如权利要求1所述的数字广播发射机，还包括数据发生器，用于生成所述已知数据，
其中，所述已知数据被数字广播接收机用来去除所发送数据的干扰。
CN2009102040125A 2004-01-27 2005-01-20 数字广播发射机 Expired - Fee Related CN101719974B (zh)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US53911104P 2004-01-27 2004-01-27
US60/539,111 2004-01-27
KR1020040086516A KR100896684B1 (ko) 2004-01-27 2004-10-28 수신 성능이 향상된 디지털 방송 송수신 시스템 및 그의신호처리방법
KR10-2004-0086516 2004-10-28

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CN2005800031206A Division CN1910919B (zh) 2004-01-27 2005-01-20 具有改进接收性能的数字广播发射/接收系统及其信号处理方法

Publications (2)

Publication Number Publication Date
CN101719974A CN101719974A (zh) 2010-06-02
CN101719974B true CN101719974B (zh) 2013-11-13

Family

ID=37264809

Family Applications (6)

Application Number Title Priority Date Filing Date
CN2009101184868A Expired - Fee Related CN101521645B (zh) 2004-01-27 2005-01-20 数字广播接收机及其信号处理方法
CN2005800031206A Expired - Fee Related CN1910919B (zh) 2004-01-27 2005-01-20 具有改进接收性能的数字广播发射/接收系统及其信号处理方法
CN2009102040093A Expired - Fee Related CN101808184B (zh) 2004-01-27 2005-01-20 数字广播接收机
CN2009102040125A Expired - Fee Related CN101719974B (zh) 2004-01-27 2005-01-20 数字广播发射机
CN2009102040110A Expired - Fee Related CN101808185B (zh) 2004-01-27 2005-01-20 数字广播接收机
CN2009102040106A Expired - Fee Related CN101841638B (zh) 2004-01-27 2005-01-20 数字广播接收机

Family Applications Before (3)

Application Number Title Priority Date Filing Date
CN2009101184868A Expired - Fee Related CN101521645B (zh) 2004-01-27 2005-01-20 数字广播接收机及其信号处理方法
CN2005800031206A Expired - Fee Related CN1910919B (zh) 2004-01-27 2005-01-20 具有改进接收性能的数字广播发射/接收系统及其信号处理方法
CN2009102040093A Expired - Fee Related CN101808184B (zh) 2004-01-27 2005-01-20 数字广播接收机

Family Applications After (2)

Application Number Title Priority Date Filing Date
CN2009102040110A Expired - Fee Related CN101808185B (zh) 2004-01-27 2005-01-20 数字广播接收机
CN2009102040106A Expired - Fee Related CN101841638B (zh) 2004-01-27 2005-01-20 数字广播接收机

Country Status (7)

Country Link
US (5) US7593474B2 (zh)
EP (4) EP2139145A3 (zh)
JP (4) JP4594436B2 (zh)
KR (6) KR100896684B1 (zh)
CN (6) CN101521645B (zh)
CA (4) CA2681955C (zh)
RU (1) RU2508605C2 (zh)

Families Citing this family (107)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100896684B1 (ko) 2004-01-27 2009-05-14 삼성전자주식회사 수신 성능이 향상된 디지털 방송 송수신 시스템 및 그의신호처리방법
KR100692596B1 (ko) * 2004-05-06 2007-03-13 삼성전자주식회사 수신 성능이 향상된 디지털 방송 송수신 시스템 및 그의신호처리방법
KR100683879B1 (ko) * 2004-05-06 2007-02-15 삼성전자주식회사 수신 성능이 향상된 디지털 방송 송수신 시스템 및 그의신호처리방법
CA2679040C (en) * 2004-05-13 2015-04-07 Samsung Electronics Co., Ltd. Digital broadcasting transmission/reception devices capable of improving a receiving performance and signal processing method thereof
WO2005120062A1 (en) * 2004-05-13 2005-12-15 Samsung Electronics Co., Ltd. Digital broadcasting transmission/reception devices capable of improving a receiving performance an dsignal processing method thereof
KR100744055B1 (ko) * 2004-06-23 2007-07-30 삼성전자주식회사 수신 성능 및 등화 성능이 향상된 디지털 방송 송수신 시스템 및 그의 신호처리방법
KR101165379B1 (ko) * 2004-07-15 2012-07-17 삼성전자주식회사 수신 성능이 향상된 지상파 디지털 방송 송수신 시스템 및그의 신호처리방법
KR100706213B1 (ko) * 2005-02-21 2007-04-11 삼성전자주식회사 지상파 ｄｍｂ의 ｔｓ패킷 동기화 방법 및 장치
US7822139B2 (en) * 2005-03-02 2010-10-26 Rohde & Schwarz Gmbh & Co. Kg Apparatus, systems, methods and computer products for providing a virtual enhanced training sequence
CA2595280C (en) * 2005-03-02 2013-11-19 Rohde & Schwarz Gmbh & Co. Kg Apparatus, systems and methods for providing enhancements to atsc networks using synchronous vestigial sideband (vsb) frame slicing
US7920602B2 (en) 2005-05-23 2011-04-05 Samsung Electronics Co., Ltd. Method for formatting digital broadcast transport stream packet for improved receiving performance, digital broadcast transmitter, and signal processing method thereof
GB0517932D0 (en) * 2005-09-03 2005-10-12 Pace Micro Tech Plc Method and system for testing signal integrity
KR101191181B1 (ko) 2005-09-27 2012-10-15 엘지전자 주식회사 디지털 방송의 송/수신 시스템 및 데이터 구조
CA2562206C (en) 2005-10-05 2012-07-10 Lg Electronics Inc. A method and digital broadcast transmitter for transmitting a digital broadcast signal
US7720062B2 (en) 2005-10-05 2010-05-18 Lg Electronics Inc. Method of processing traffic information and digital broadcasting system
US7840868B2 (en) 2005-10-05 2010-11-23 Lg Electronics Inc. Method of processing traffic information and digital broadcast system
US7804860B2 (en) 2005-10-05 2010-09-28 Lg Electronics Inc. Method of processing traffic information and digital broadcast system
US7668209B2 (en) 2005-10-05 2010-02-23 Lg Electronics Inc. Method of processing traffic information and digital broadcast system
KR101162213B1 (ko) * 2006-04-29 2012-07-04 엘지전자 주식회사 디지털 방송 시스템 및 처리 방법
CA2562202C (en) 2005-10-05 2013-06-18 Lg Electronics Inc. Method of processing traffic information and digital broadcast system
CA2562220C (en) 2005-10-05 2013-06-25 Lg Electronics Inc. Method of processing traffic information and digital broadcast system
US8009781B2 (en) 2005-10-12 2011-08-30 Lg Electronics, Inc. DTV receiver and method of processing signal in DTV receiver
KR101079100B1 (ko) 2005-10-12 2011-11-02 엘지전자 주식회사 디지털 방송 시스템, 방법, 및 데이터 구조
KR100740210B1 (ko) * 2005-10-21 2007-07-18 삼성전자주식회사 듀얼 전송 스트림 생성 장치 및 그 방법
KR101100207B1 (ko) 2005-11-08 2011-12-28 엘지전자 주식회사 디지털 방송 시스템 및 처리 방법
KR100854090B1 (ko) * 2005-11-25 2008-08-25 삼성전자주식회사 수신 성능이 향상된 디지털 방송 송수신기 및 그의신호처리방법
US7983354B2 (en) * 2005-11-25 2011-07-19 Samsung Electronics Co., Ltd. Digital broadcast transmitter/receiver having an improved receiving performance and signal processing method thereof
KR101191182B1 (ko) * 2005-11-26 2012-10-15 엘지전자 주식회사 디지털 방송 시스템 및 처리 방법
KR101199374B1 (ko) * 2005-12-20 2012-11-09 엘지전자 주식회사 디지털 방송 시스템 및 처리 방법
WO2007073033A1 (en) * 2005-12-22 2007-06-28 Samsung Electronics Co., Ltd. Digital broadcasting transmitter, turbo stream processing method thereof, and digital broadcasting system having the same
US7797607B2 (en) 2005-12-27 2010-09-14 Lg Electronics, Inc. DTV transmitter and method of coding main and enhanced data in DTV transmitter
WO2007081102A1 (en) * 2006-01-10 2007-07-19 Lg Electronics Inc. Digital broadcasting system and method of processing data
WO2007081108A1 (en) * 2006-01-13 2007-07-19 Lg Electronics Inc. Digital broadcasting system and method of processing data
KR101208509B1 (ko) 2006-01-20 2012-12-05 엘지전자 주식회사 디지털 방송 시스템 및 처리 방법
WO2007091779A1 (en) 2006-02-10 2007-08-16 Lg Electronics Inc. Digital broadcasting receiver and method of processing data
WO2007100185A1 (en) * 2006-02-28 2007-09-07 Lg Electronics Inc. Digital broadcasting system and method of processing data
WO2007100186A1 (en) 2006-03-02 2007-09-07 Lg Electronics Inc. Digital broadcasting system and method of processing data
US8493973B2 (en) * 2006-04-04 2013-07-23 Samsung Electronics Co., Ltd. Method of and apparatus for transmitting digital broadcasting signal in advanced-VSB (A-VSB) system in which transport packet without adaptation field is provided at fixed location in data field slices
WO2007123302A1 (en) 2006-04-25 2007-11-01 Lg Electronics Inc. Digital broadcasting system and method of processing data
WO2007126196A1 (en) * 2006-04-29 2007-11-08 Lg Electronics Inc. Digital broadcasting system and method of processing data
WO2007126195A1 (en) 2006-04-29 2007-11-08 Lg Electronics Inc. Digital broadcasting system and method of transmitting/receiving data
WO2007136166A1 (en) 2006-05-23 2007-11-29 Lg Electronics Inc. Digital broadcasting system and method of processing data
MX2008016049A (es) 2006-06-15 2009-02-13 Lg Electronics Inc Sistema de radiodifusion digital y metodo de procesamiento de datos.
CA2656881C (en) 2006-07-11 2012-08-07 Lg Electronics Inc. Channel equalizing method and apparatus, and receiving system
KR101283862B1 (ko) * 2006-08-16 2013-07-08 엘지전자 주식회사 터보 부호의 부호화 장치 및 방법
US7873104B2 (en) 2006-10-12 2011-01-18 Lg Electronics Inc. Digital television transmitting system and receiving system and method of processing broadcasting data
CA2667991C (en) 2007-02-01 2018-05-01 Rohde & Schwarz Gmbh & Co. Kg Systems, apparatus, methods and computer program products for providing atsc interoperability
WO2008097027A1 (en) * 2007-02-07 2008-08-14 Lg Electronics Inc. Digital broadcasting system and method of processing data
CN101257362B (zh) * 2007-02-27 2011-01-19 展讯通信（上海）有限公司 基于td-scdma网络的广播业务外部前向纠错编码装置和方法
KR101253186B1 (ko) * 2007-03-26 2013-04-10 엘지전자 주식회사 디지털 방송 시스템 및 데이터 처리 방법
KR101253185B1 (ko) 2007-03-26 2013-04-10 엘지전자 주식회사 디지털 방송 시스템 및 데이터 처리 방법
KR101285887B1 (ko) 2007-03-26 2013-07-11 엘지전자 주식회사 디지털 방송 시스템 및 데이터 처리 방법
KR101285888B1 (ko) 2007-03-30 2013-07-11 엘지전자 주식회사 디지털 방송 시스템 및 데이터 처리 방법
KR101199387B1 (ko) 2007-04-02 2012-11-09 엘지전자 주식회사 디지털 방송 시스템 및 데이터 처리 방법
KR101276851B1 (ko) * 2007-04-06 2013-06-18 엘지전자 주식회사 디지털 방송 신호 송신 장치 및 방법
KR20080090784A (ko) 2007-04-06 2008-10-09 엘지전자 주식회사 전자 프로그램 정보 제어 방법 및 수신 장치
KR20080092501A (ko) 2007-04-12 2008-10-16 엘지전자 주식회사 모바일 서비스 데이터 수신 장치 및 제어 방법
KR101351019B1 (ko) * 2007-04-13 2014-01-13 엘지전자 주식회사 방송 신호 송수신 장치 및 방송 신호 송수신 방법
KR101351026B1 (ko) * 2007-04-13 2014-01-13 엘지전자 주식회사 방송 신호 송수신 장치 및 방송 신호 송수신 방법
KR101369838B1 (ko) * 2007-04-20 2014-03-06 삼성전자주식회사 전송 스트림 생성장치, 송신 장치, 수신 장치, 이들이포함된 디지털 방송 시스템 및 그 방법
KR101456002B1 (ko) 2007-06-26 2014-11-03 엘지전자 주식회사 디지털 방송 시스템 및 데이터 처리 방법
KR101405967B1 (ko) * 2007-06-28 2014-06-12 엘지전자 주식회사 디지털 방송 시스템 및 데이터 처리 방법
KR20090001402A (ko) * 2007-06-29 2009-01-08 엘지전자 주식회사 방송 수신이 가능한 텔레매틱스 단말기 및 방송 신호 처리방법
CA2692339C (en) * 2007-06-29 2013-03-26 Lg Electronics Inc. Broadcast receiving system and method for processing broadcast signals
KR101461958B1 (ko) 2007-06-29 2014-11-14 엘지전자 주식회사 디지털 방송 시스템 및 데이터 처리 방법
KR20090004658A (ko) * 2007-07-02 2009-01-12 엘지전자 주식회사 디지털 방송 시스템 및 데이터 처리 방법
KR20090004660A (ko) * 2007-07-02 2009-01-12 엘지전자 주식회사 디지털 방송 시스템 및 데이터 처리 방법
KR20090004659A (ko) * 2007-07-02 2009-01-12 엘지전자 주식회사 디지털 방송 시스템 및 데이터 처리 방법
KR20090004661A (ko) * 2007-07-04 2009-01-12 엘지전자 주식회사 디지털 방송 시스템 및 데이터 처리 방법
WO2009005326A2 (en) 2007-07-04 2009-01-08 Lg Electronics Inc. Digital broadcasting system and method of processing data
US8433973B2 (en) 2007-07-04 2013-04-30 Lg Electronics Inc. Digital broadcasting system and method of processing data
KR20090004632A (ko) * 2007-07-05 2009-01-12 삼성전자주식회사 디지털 방송 송신기 및 수신기와 그 스트림 처리 방법들
KR20090012180A (ko) 2007-07-28 2009-02-02 엘지전자 주식회사 디지털 방송 시스템 및 데이터 처리 방법
US7965778B2 (en) 2007-08-24 2011-06-21 Lg Electronics Inc. Digital broadcasting system and method of processing data in digital broadcasting system
WO2009028857A2 (en) 2007-08-24 2009-03-05 Lg Electronics Inc. Digital broadcasting system and method of processing data in digital broadcasting system
CN101785301B (zh) 2007-08-24 2012-06-20 Lg电子株式会社 数字广播系统和在数字广播系统中处理数据的方法
CA2694704C (en) 2007-08-24 2013-06-25 Lg Electronics Inc. Digital broadcasting system and method of processing data in digital broadcasting system
US20100254489A1 (en) * 2007-11-14 2010-10-07 Thomson Licensing Code enhanced staggercasting
KR20090050994A (ko) 2007-11-16 2009-05-20 엘지전자 주식회사 디지털 방송 시스템 및 데이터 처리 방법
DE102008017290A1 (de) * 2007-12-11 2009-06-18 Rohde & Schwarz Gmbh & Co. Kg Verfahren und Vorrichtung zur Bildung eines gemeinsamen Datenstroms insbesondere nach dem ATSC-Standard
DE102007059959B4 (de) * 2007-12-12 2020-01-02 Rohde & Schwarz Gmbh & Co. Kg Verfahren und System zur Übertragung von Daten zwischen einer zentralen Rundfunkstation und mindestens einem Sender
KR101534076B1 (ko) * 2008-04-30 2015-07-07 삼성전자주식회사 디지털 방송 송신기 및 수신기와 그 스트림 처리방법들
US8355458B2 (en) * 2008-06-25 2013-01-15 Rohde & Schwarz Gmbh & Co. Kg Apparatus, systems, methods and computer program products for producing a single frequency network for ATSC mobile / handheld services
DE102008056703A1 (de) * 2008-07-04 2010-01-07 Rohde & Schwarz Gmbh & Co. Kg Verfahren und System zur Zeitsynchronisierung zwischen einer Zentrale und mehreren Sendern
KR101490796B1 (ko) * 2008-06-25 2015-02-06 삼성전자주식회사 주파수 채널 정보의 전송 방법과 수신 방법 및 그 장치
DE102008059028B4 (de) * 2008-10-02 2021-12-02 Rohde & Schwarz GmbH & Co. Kommanditgesellschaft Verfahren und Vorrichtung zur Erzeugung eines Transportdatenstroms mit Bilddaten
KR101519494B1 (ko) * 2008-11-06 2015-05-12 로오데운트쉬바르츠게엠베하운트콤파니카게 Ａｔｓｃ 데이터스트림에서 데이터 패킷의 동기화 맵핑 방법 및 시스템
US8209584B2 (en) 2009-03-18 2012-06-26 Lg Electronics Inc. Transmitting/receiving system and method of processing broadcasting signal in transmitting/receiving system
EP2234357B1 (en) * 2009-03-21 2016-07-27 Rohde & Schwarz GmbH & Co. KG Method for improving the data rate of mobile data and the quality of channel estimation in an ATSC-M/H transport data stream
DE102009025219A1 (de) * 2009-04-07 2010-10-14 Rohde & Schwarz Gmbh & Co. Kg Verfahren und Vorrichtung zur kontinuierlichen Anpassung von Kodierungsparametern an eine veränderliche Nutzdatenrate
DE102009057363B4 (de) 2009-10-16 2013-04-18 Rohde & Schwarz Gmbh & Co. Kg Verfahren und Vorrichtung zur effizienten Übertragung von überregional und regional auszustrahlenden Programm-und Servicedaten
US8565130B2 (en) * 2009-12-16 2013-10-22 Lg Electronics Inc. Transmitting system and method of processing digital broadcast signal in transmitting system, receiving system and method of receiving digital broadcast signal in receiving system
RS56512B1 (sr) 2010-04-13 2018-02-28 Ge Video Compression Llc Kodiranje mapa značaja i blokova koeficijenata transformacije
TW201141078A (en) * 2010-05-14 2011-11-16 Nat Univ Chung Cheng Method of handling packet loss using error-correcting codes and block rearrangement
US8989021B2 (en) 2011-01-20 2015-03-24 Rohde & Schwarz Gmbh & Co. Kg Universal broadband broadcasting
US9131281B2 (en) * 2011-12-29 2015-09-08 Tata Consultancy Services Limited Method for embedding and multiplexing audio metadata in a broadcasted analog video stream
US8837644B2 (en) * 2012-06-29 2014-09-16 Blackberry Limited Method and apparatus of cross-correlation with application to channel estimation and detection
JP2014042141A (ja) * 2012-08-22 2014-03-06 Mitsubishi Electric Corp 受信装置及び受信方法
US9025575B2 (en) 2012-11-15 2015-05-05 Telefonaktiebolaget Lm Ericsson (Publ) Antenna array calibration using traffic signals
RU2530322C1 (ru) * 2013-06-04 2014-10-10 Открытое акционерное общество "Российская корпорация ракетно-космического приборостроения и информационных систем" (ОАО "Российские космические системы") Способ радиоприема высокоскоростной информации космической радиолинии и устройство для его реализации
RU2530219C1 (ru) * 2013-06-18 2014-10-10 Федеральное государственное бюджетное учреждение науки Научно-исследовательский институт системных исследований Российской академии наук (НИИСИ РАН) Приемник с гибридным эквалайзером
CN108352924B (zh) * 2015-10-28 2020-06-26 华为技术有限公司 一种数据处理方法及装置
WO2017203324A1 (en) 2016-05-24 2017-11-30 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for antenna array calibration using on-board receiver
WO2018184174A1 (en) * 2017-04-06 2018-10-11 Zte Corporation Method and apparatus for wireless communication waveform generation
US10972193B2 (en) 2017-09-06 2021-04-06 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for antenna array calibration with interference reduction
WO2019086931A1 (en) 2017-10-31 2019-05-09 Telefonaktiebolaget Lm Ericsson (Publ) Orthogonal training signals for transmission in an antenna array
CN112272351B (zh) * 2020-10-22 2022-07-08 浙江天则通信技术有限公司 一种反无源定位装置及系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1230076A (zh) * 1998-03-24 1999-09-29 三菱电机株式会社 数字视频接收装置
CN1302153A (zh) * 1999-12-24 2001-07-04 Lg电子株式会社 数字电视中继系统
CN1455589A (zh) * 2002-04-30 2003-11-12 三星电子株式会社 机顶盒系统及观看数字广播的方法

Family Cites Families (85)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1449382A (en) 1915-11-29 1923-03-27 American Telephone & Telegraph Method and means for signaling with high-frequency waves
US4058713A (en) 1976-09-20 1977-11-15 General Signal Corporation Equalization by adaptive processing operating in the frequency domain
US4365338A (en) 1980-06-27 1982-12-21 Harris Corporation Technique for high rate digital transmission over a dynamic dispersive channel
DE3066889D1 (en) 1980-12-23 1984-04-12 Ibm Method of transmitting binary data sequences and arrangement for enabling the rapid determination of the end of a transmitted binary data sequence
US5023889A (en) 1988-05-31 1991-06-11 California Institute Of Technology Trellis coded multilevel DPSK system with doppler correction for mobile satellite channels
US5127051A (en) 1988-06-13 1992-06-30 Itt Corporation Adaptive modem for varying communication channel
US5108443A (en) * 1989-04-25 1992-04-28 Medevelop Ab Anchoring element for supporting a joint mechanism of a finger or other reconstructed joint
US5260972A (en) 1990-03-13 1993-11-09 At&T Bell Laboratories Technique for determining signal dispersion characteristics in communications systems
US5105443A (en) 1990-05-29 1992-04-14 At&T Bell Laboratories Inband coding of secondary data
US5394440A (en) 1991-02-06 1995-02-28 General Datacomm, Inc. High speed modem systems incorporating distribution preserving Tomlinson encoding and decoding for secondary channels
US5111155A (en) 1991-03-04 1992-05-05 Motorola, Inc. Distortion compensation means and method
US5263051A (en) 1991-07-05 1993-11-16 Codex Corporation Device and method of interleaving for a trellis precoding system
US5343500A (en) 1991-09-03 1994-08-30 At&T Bell Laboratories Non-linear encoder and decoder for information transmission through non-linear channels
US5267269A (en) 1991-09-04 1993-11-30 Level One Communications, Inc. System and method employing predetermined waveforms for transmit equalization
US5541964A (en) 1993-08-30 1996-07-30 At&T Corp. Distortion compensation technique
US5841484A (en) 1994-02-10 1998-11-24 Philips Electronics North North America Corporation Blind equalizer method and apparatus for HDTY transmission using an NTSC rejection filter for mitigating co-channel interference
US5602602A (en) 1994-02-10 1997-02-11 Philips Electronics North America Corporation Method and apparatus for combating co-channel NTSC interference for digital TV transmission having a simplified rejection filter
US5511099A (en) * 1994-03-30 1996-04-23 Samsung Electronics Co., Ltd. Passband sync block recovery
JP3514811B2 (ja) 1994-03-31 2004-03-31 株式会社東芝 Ｏｆｄｍ伝送方法、ｏｆｄｍ送信装置及びｏｆｄｍ受信装置
US5508752A (en) * 1994-04-12 1996-04-16 Lg Electronics Inc. Partial response trellis decoder for high definition television (HDTV) system
US5485481A (en) * 1994-06-28 1996-01-16 Seastar Optics Inc. Fibre-grating-stabilized diode laser
GB9413169D0 (en) * 1994-06-30 1994-08-24 Thomson Consumer Electronics Modulator data frame interfacing
JP2768296B2 (ja) 1994-09-26 1998-06-25 日本電気株式会社 信号処理装置
US5625642A (en) 1994-10-11 1997-04-29 Lucent Technologies Inc. Spread-response precoding system having signature sequences longer than the inter-symbol time interval
KR0170730B1 (ko) * 1996-01-12 1999-03-20 김광호 필드 동기신호 검출회로 및 그 방법
DE19614544C1 (de) * 1996-04-12 1997-08-28 Philips Patentverwaltung Entzerrer mit einem Sequenzschätzverfahren mit Zustandsreduktion für einen Empfänger in einem digitalen Übertragungssystem
US5802107A (en) * 1996-09-13 1998-09-01 Zenith Electronics Corporation Symbol rotator
KR100614435B1 (ko) * 1997-08-11 2006-08-22 소니 가부시끼 가이샤 디지털 데이터 전송 장치 및 방법, 디지털 데이터 복조장치 및 방법, 및 전송 매체
US6477208B1 (en) 1997-10-30 2002-11-05 Comtier Composite trellis system and method
US5974091A (en) 1997-10-30 1999-10-26 Communication Network Systems Composite trellis system and method
SE517687C2 (sv) 1997-12-23 2002-07-02 Scania Cv Ab Cylinderhuvud för förbränningsmotorer
JP3810918B2 (ja) 1998-02-23 2006-08-16 株式会社東芝 マルチメディアデータ中継装置及び方法
US6445750B1 (en) 1998-04-22 2002-09-03 Lucent Technologies Inc. Technique for communicating digitally modulated signals over an amplitude-modulation frequency band
JP3344969B2 (ja) 1998-05-13 2002-11-18 松下電器産業株式会社 誤り訂正方法および誤り訂正回路
US6738949B2 (en) * 1998-05-13 2004-05-18 Matsushita Electric Industrial Co., Ltd. Error correction circuit and error correction method
BR9906479B1 (pt) 1998-06-05 2013-01-22 dispositivo de codificaÇço de canal, e, processo de codificaÇço de canal.
ATE329413T1 (de) 1998-08-20 2006-06-15 Samsung Electronics Co Ltd Vorrichtung und verfahren zur einfügung von vorher bekannten bits in die eingangsstufe eines kanalkodierers
JP3860369B2 (ja) * 1999-03-17 2006-12-20 パイオニア株式会社 ディジタル信号受信システムにおける判定帰還型等化器
GB2350018B (en) 1999-05-08 2003-07-30 Motorola Ltd A method of and apparatus for estimating a characteristic of a signal
US6687310B1 (en) 1999-05-27 2004-02-03 Zenith Electronics Corporation Trellis coded modulation system for digital television signal with trellis coded data and synchronization symbols
ES2252026T3 (es) * 1999-07-08 2006-05-16 Deepwater Marine Technology L.L.C. Subestructura compacta de plataforma de cables tensados.
US6275554B1 (en) * 1999-07-09 2001-08-14 Thomson Licensing S.A. Digital symbol timing recovery network
US7415061B2 (en) 1999-08-31 2008-08-19 Broadcom Corporation Cancellation of burst noise in a communication system with application to S-CDMA
US6650371B1 (en) * 1999-09-09 2003-11-18 National Semiconductor Corporation Multiplexed video signal interface signal, system and method
JP3116090B1 (ja) * 1999-09-17 2000-12-11 郵政省通信総合研究所長 通信システム、送信装置、受信装置、送信方法、受信方法、および、情報記録媒体
JP3573663B2 (ja) * 1999-09-21 2004-10-06 松下電器産業株式会社 デジタル放送復調装置
EP1254544B1 (en) * 1999-12-03 2015-04-29 Broadcom Corporation Embedded training sequences for carrier acquisition and tracking
FI108265B (fi) 2000-02-21 2001-12-14 Tellabs Oy Menetelmä ja laitteisto adaptiivisen kanavakorjauksen opetusvaiheen toteuttamiseksi digitaalisella tietoliikenneyhteydellä
US20030021341A1 (en) * 2000-04-24 2003-01-30 Vigil Armando J. Method of effective backwards compatible ATSC-DTV multipath equalization through training symbol induction
EP1154603A1 (en) 2000-05-08 2001-11-14 Hewlett-Packard Company, A Delaware Corporation Training of equalisers, for use with signals of differing data rates
KR100360622B1 (ko) * 2000-06-12 2002-11-13 주식회사 문화방송 엠펙 데이터 프레임과 이를 이용한 송수신 시스템
KR100865789B1 (ko) 2000-07-01 2008-10-29 엔엑스티웨이브 코뮤니케이션즈 인크 8ｖｓｂ 신호를 위한 로버스트 데이터 확장
JP4141114B2 (ja) 2000-07-05 2008-08-27 株式会社荏原製作所 電解加工方法及び装置
US6912258B2 (en) 2000-07-07 2005-06-28 Koninklijke Philips Electtronics N.V. Frequency-domain equalizer for terrestrial digital TV reception
KR100424496B1 (ko) * 2000-08-31 2004-03-26 삼성전자주식회사 디지털 ｖｓｂ시스템의 동기신호를 이용한 이퀄라이져 제어 방법 및 장치
US6760374B1 (en) 2000-09-19 2004-07-06 Rockwell Collins, Inc. Block decision feedback equalization method and apparatus
US6763064B1 (en) 2000-09-21 2004-07-13 Rockwell Collins Block decision directed equalization method and apparatus
KR100351829B1 (ko) * 2000-09-26 2002-09-11 엘지전자 주식회사 디지털 통신 시스템
JP3827518B2 (ja) * 2000-10-23 2006-09-27 シャープ株式会社 ホームネットワークシステム
US7031382B2 (en) 2000-10-24 2006-04-18 Harris Corporation Non-linear equalizer system and method
CN1359204A (zh) * 2000-12-13 2002-07-17 北京牡丹视源电子有限责任公司 “丽音”数据广播系统
KR100673419B1 (ko) * 2000-12-28 2007-01-24 엘지전자 주식회사 전송 시스템 및 데이터 처리 방법
KR100674423B1 (ko) * 2001-01-19 2007-01-29 엘지전자 주식회사 송/수신 시스템 및 데이터 처리 방법
US7206352B2 (en) 2001-04-02 2007-04-17 Koninklijke Philips Electronics N.V. ATSC digital television system
US7111221B2 (en) * 2001-04-02 2006-09-19 Koninklijke Philips Electronics N.V. Digital transmission system for an enhanced ATSC 8-VSB system
KR100813040B1 (ko) * 2001-05-23 2008-03-14 엘지전자 주식회사 방송 시스템 및 방송 시스템에서 데이터를 처리하는 방법
KR100706508B1 (ko) 2001-04-25 2007-04-11 엘지전자 주식회사 디지털티브이의 브이에스비 통신시스템
CN100557984C (zh) 2001-05-16 2009-11-04 皇家菲利浦电子有限公司 编码和解码事前部分地已知的信息
US20030099303A1 (en) 2001-06-04 2003-05-29 Koninklijke Philips Electronics N.V. Digital television (DTV) transmission system using enhanced coding schemes
KR20040044448A (ko) 2001-08-20 2004-05-28 코닌클리케 필립스 일렉트로닉스 엔.브이. 통지된 디코더를 위한 향상된 코딩
US7035353B2 (en) * 2001-10-24 2006-04-25 Zenith Electronics Corporation Channel estimation method blending correlation and least-squares based approaches
KR200262076Y1 (ko) 2001-10-24 2002-02-06 이진구 무선단말유닛을 이용한 표시 제어장치
KR100398884B1 (ko) * 2001-11-01 2003-09-19 삼성전자주식회사 다중 전송 경로를 통해 전송된 방송신호의 복원시발생하는 위상에러를 보상할 수 있는 디지털방송 수신기의에러복원장치
US6973137B2 (en) 2001-12-03 2005-12-06 Koninklijke Philips Electronics N.V. Apparatus and method for generating robust ATSC 8-VSB bit streams
US7059335B2 (en) * 2002-01-31 2006-06-13 Novartis Ag Process for treating moulds or mould halves for the production of ophthalmic lenses
KR200289078Y1 (ko) 2002-02-25 2002-09-13 손을택 초미세기포 발생장치
DE20207179U1 (de) 2002-05-07 2002-12-05 Roland Man Druckmasch Verreibungsantrieb für eine Walze in einer Verarbeitungsmaschine, insbesondere in einer Druckmaschine
KR100859877B1 (ko) * 2002-05-30 2008-09-24 삼성전자주식회사 디지털방송 시스템의 오류 정정 부호화 장치
US7085985B2 (en) * 2002-05-31 2006-08-01 Broadcom Corporation Close two constituent trellis of a turbo encoder within the interleave block
KR100913080B1 (ko) * 2002-07-12 2009-08-21 엘지전자 주식회사 디지털 송수신 시스템의 채널 응답 추정 및 등화기 계수초기화 방법
WO2004062283A1 (en) * 2003-01-06 2004-07-22 Electronics And Telecommunications Research Institute Digital television transmitter and receiver for transmitting and receiving dual stream using 4 level vestigial side band robust data
PL1625697T3 (pl) 2003-05-15 2013-03-29 Ericsson Telefon Ab L M Kasowanie interferencji w bezprzewodowych sieciach przekaźnikowych
CN1200521C (zh) * 2003-06-18 2005-05-04 清华大学 用于频域均衡的导频插入与信道参数估计的方法
JP3100870U (ja) 2003-10-06 2004-05-27 株式会社カシワテック 消火用ノズル組立体
KR100896684B1 (ko) * 2004-01-27 2009-05-14 삼성전자주식회사 수신 성능이 향상된 디지털 방송 송수신 시스템 및 그의신호처리방법

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1230076A (zh) * 1998-03-24 1999-09-29 三菱电机株式会社 数字视频接收装置
CN1302153A (zh) * 1999-12-24 2001-07-04 Lg电子株式会社 数字电视中继系统
CN1455589A (zh) * 2002-04-30 2003-11-12 三星电子株式会社 机顶盒系统及观看数字广播的方法

Also Published As

Publication number Publication date
JP4594436B2 (ja) 2010-12-08
JP2010081631A (ja) 2010-04-08
CN101808184A (zh) 2010-08-18
CA2681959C (en) 2013-06-25
CN101808184B (zh) 2012-08-29
KR20090115835A (ko) 2009-11-09
CA2683448A1 (en) 2005-08-04
CN101521645A (zh) 2009-09-02
EP2139144A3 (en) 2010-01-27
CN101521645B (zh) 2012-05-09
CA2681959A1 (en) 2005-08-04
CN101808185B (zh) 2013-01-09
US20100034306A1 (en) 2010-02-11
US20070002960A1 (en) 2007-01-04
EP2139146A3 (en) 2010-01-27
CN1910919B (zh) 2012-05-09
KR20090115834A (ko) 2009-11-09
KR100970733B1 (ko) 2010-07-16
US8107548B2 (en) 2012-01-31
EP2139147A3 (en) 2010-01-27
US20100034307A1 (en) 2010-02-11
CA2683448C (en) 2013-05-14
CN101841638A (zh) 2010-09-22
KR20090115836A (ko) 2009-11-09
KR101037944B1 (ko) 2011-05-31
RU2508605C2 (ru) 2014-02-27
EP2139146A2 (en) 2009-12-30
US7593474B2 (en) 2009-09-22
US8199839B2 (en) 2012-06-12
KR101037945B1 (ko) 2011-05-30
EP2139145A2 (en) 2009-12-30
CA2681955A1 (en) 2005-08-04
KR20050077255A (ko) 2005-08-01
CA2683447A1 (en) 2005-08-04
JP4975798B2 (ja) 2012-07-11
KR20090115837A (ko) 2009-11-09
CN101841638B (zh) 2012-12-12
KR101037943B1 (ko) 2011-05-31
JP2010081633A (ja) 2010-04-08
CA2681955C (en) 2013-05-28
EP2139147A2 (en) 2009-12-30
KR20090014328A (ko) 2009-02-10
JP5005752B2 (ja) 2012-08-22
JP2010035249A (ja) 2010-02-12
US8050347B2 (en) 2011-11-01
EP2139145A3 (en) 2010-01-27
US20100039569A1 (en) 2010-02-18
KR100896684B1 (ko) 2009-05-14
EP2139144A2 (en) 2009-12-30
CN1910919A (zh) 2007-02-07
CN101719974A (zh) 2010-06-02
CA2683447C (en) 2013-05-07
KR101037942B1 (ko) 2011-05-31
JP5091218B2 (ja) 2012-12-05
RU2008140860A (ru) 2010-04-20
US8019011B2 (en) 2011-09-13
US20050162886A1 (en) 2005-07-28
JP2010081632A (ja) 2010-04-08
CN101808185A (zh) 2010-08-18

Similar Documents

Publication Publication Date Title
CN101719974B (zh) 数字广播发射机
CN101656823B (zh) 数字广播发送及接收系统及其信号处理方法
CN1973542B (zh) 能够提高接收和均衡性能的数字广播发送/接收及其信号处理方法
CN101715116B (zh) 数字广播接收机及其信号处理方法
WO2005109878A1 (en) Digital broadcast transmitting and receiving system having an improved receiving performance and signal processing method thereof
WO2005071958A1 (en) Digital broadcast transmitting/receiving system having an improved receiving performance and signal processing method thereof
CN100551026C (zh) 改善接收性能的数字广播发送/接收装置及信号处理方法
CN101690196B (zh) 数字广播发送器、接收器及其处理流的方法

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20131113

Termination date: 20220120

CF01 Termination of patent right due to non-payment of annual fee