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1. 发明申请

WO0209380A2 A MODULATION TECHNIQUE PROVIDING HIGH DATA RATE THROUGH BAND LIMITED CHANNELS 审中-公开
标题翻译：通过带有限通道提供高数据速率的调制技术
公开(公告)号：WO0209380A2
公开(公告)日：2002-01-31
申请号：PCT/US0122851
申请日：2001-07-20
申请人： THOMSON LICENSING SA , MOHAN CHANDRA , ZHANG ZHIMING JAMES , MAJUMDAR JAYANTA
发明人： MOHAN CHANDRA , ZHANG ZHIMING JAMES , MAJUMDAR JAYANTA
IPC分类号： H04N7/173 , G06F11/10 , G06F15/00 , G06F21/24 , G09C1/00 , G11B20/10 , G11B20/14 , G11B20/18 , G11B20/22 , H03L7/091 , H03M13/03 , H03M13/13 , H03M13/23 , H03M13/29 , H04B1/707 , H04B7/005 , H04B7/24 , H04B7/26 , H04B14/00 , H04H60/72 , H04J13/00 , H04J13/16 , H04L1/00 , H04L9/00 , H04L9/08 , H04L9/10 , H04L9/32 , H04L12/24 , H04L12/54 , H04L25/03 , H04L25/49 , H04L25/497 , H04L27/10 , H04L27/156 , H04L27/18 , H04L29/06 , H04M1/247 , H04M1/66 , H04N7/26 , H04N7/52 , H04W4/06 , H04W4/12 , H04W4/14 , H04W8/02 , H04W8/16 , H04W8/20 , H04W8/24 , H04W8/26 , H04W12/06 , H04W12/10 , H04W24/00 , H04W40/22 , H04W72/04 , H04W76/02 , H04W80/06 , H04W84/12 , H04W88/02 , H04L27/00
CPC分类号： H04L65/1043 , G06F21/305 , G06F21/6209 , G06F21/74 , G06F21/88 , G06F2221/2105 , G06F2221/2115 , G11B20/10009 , G11B20/10425 , G11B20/22 , H03L7/091 , H03M7/4006 , H03M13/23 , H03M13/2903 , H03M13/2993 , H03M13/6356 , H03M13/6362 , H04B7/2628 , H04B10/25754 , H04J13/0077 , H04J13/16 , H04L1/0066 , H04L1/0068 , H04L9/085 , H04L9/304 , H04L12/4641 , H04L25/03038 , H04L25/4902 , H04L25/4904 , H04L25/497 , H04L27/156 , H04L41/06 , H04L43/0829 , H04L47/15 , H04L47/70 , H04L47/72 , H04L47/745 , H04L47/765 , H04L47/822 , H04L47/824 , H04L51/04 , H04L51/28 , H04L51/38 , H04L65/1006 , H04L65/1016 , H04M1/72533 , H04M3/42221 , H04M7/1295 , H04N19/109 , H04N19/139 , H04N19/625 , H04N19/91 , H04W4/12 , H04W4/14 , H04W8/245 , H04W8/26 , H04W28/00 , H04W28/18 , H04W28/26 , H04W40/00 , H04W52/30 , H04W72/042 , H04W76/022 , H04W88/085 , H04W88/16 , Y10S370/906 , Y10S370/907
摘要： A digital data modulator (Fig. 1) is coupled to a source (IN) of a digital data signal. An encoder (10) encodes the digital data using a variable pulse width code. A pulse signal generator (20, 25) generates pulses representing edges of the encoded digital data signal. A carrier signal generator (30, 40) generates a carrier signal having carrier pulses corresponding to the pulses from the pulse signal generator. A corresponding digital data demodulator (Fig. 3) is coupled to a source (IN) of a modulated signal having carrier pulses spaced relative to each other to represent a variable pulse width encoded digital data signal. A detector (140) generates a variable pulse width encoded signal in response to received carrier pulses. A decoder (150) decodes the variable pulse width encoded to generate the digital data signal.
摘要翻译：数字数据调制器（图1）耦合到数字数据信号的源（IN）。编码器（10）使用可变脉冲宽度码对数字数据进行编码。脉冲信号发生器（20,25）产生表示编码的数字数据信号的边沿的脉冲。载波信号发生器（30,40）产生具有对应于来自脉冲信号发生器的脉冲的载波脉冲的载波信号。对应的数字数据解调器（图3）耦合到具有相对于彼此间隔开的载波脉冲的调制信号的源（IN），以表示可变脉冲宽度编码的数字数据信号。检测器（140）响应于接收的载波脉冲产生可变脉宽编码信号。解码器（150）解码编码的可变脉冲宽度以产生数字数据信号。

2. 发明申请

WO0209329A3 AN IN-BAND-ON-CHANNEL BROADCAST SYSTEM FOR DIGITAL DATA 审中-公开
标题翻译：用于数字数据的带内通道广播系统
公开(公告)号：WO0209329A3
公开(公告)日：2003-03-27
申请号：PCT/US0122850
申请日：2001-07-20
申请人： THOMSON LICENSING SA , MOHAN CHANDRA , ZHANG ZHIMING JAMES , APRAEZ MANUEL
发明人： MOHAN CHANDRA , ZHANG ZHIMING JAMES , APRAEZ MANUEL
IPC分类号： H04B1/04 , H04B1/16 , H04H20/30 , H04H1/00 , H03M5/08
CPC分类号： H04H20/30 , H04H2201/183
摘要： An FM broadcast transmitter (Fig. 5) transmits a broadcast signal having a carrier at a broadcast frequency and sidebands, able to be transmitted at full power, within a transmission bandwidth around the carrier. It includes a source of a modulated FM stereo signal having a carrier at the broadcast frequency and having sidebands with a bandwidth less than the trnasmission bandwidth representing a stereo signal. It also includes a source of a modulated IBOC signal, having carrier pulses spaced relative to each other to represent the IBOC digital data signal encoded as a variable pulse width encoded signal, and a bandwidth within the transmission bandwidth not overlapping the FM stereo signal sidebands. A signal combiner combines the modulated FM stereo signal and the modulated IBOC signal to form the broadcast signal. An FM broadcast receiver (Fig. 6) receives a broadcast signal including a first modulated signal representing an FM stereo signal, and a second modulated signal, having carrier pulses spaced relative to each other to represent an in-band-on-channel (IBOC) digital data signal encoded as a variable pulse width encoded signal. It includes a signal separator for generating a first separated signal representing the FM stereo signal and a second separated signal representing the IBOC digital data signal. An FM signal processor generates a stereo audio signal represented by the FM stereo signal. An IBOC signal processor generates a digital data signal represented by the IBOC digital data signal.
摘要翻译： FM广播发射机（图5）在载波周围的传输带宽内以广播频率和能够以全功率发射的边带发送具有载波的广播信号。它包括具有广播频率的载波的调制FM立体声信号的源，并且具有小于表示立体声信号的trnasmission带宽的带宽的边带。它还包括调制的IBOC信号的源，其具有相对于彼此间隔开的载波脉冲，以表示被编码为可变脉冲宽度编码信号的IBOC数字数据信号，以及不与FM立体声信号边带重叠的传输带宽内的带宽。信号组合器将调制的FM立体声信号和调制的IBOC信号组合以形成广播信号。 FM广播接收机（图6）接收包括表示FM立体声信号的第一调制信号的广播信号和具有彼此间隔开的载波脉冲的第二调制信号，以表示频带上的带通（IBOC ）数字数据信号编码为可变脉宽编码信号。它包括用于产生表示FM立体声信号的第一分离信号的信号分离器和表示IBOC数字数据信号的第二分离信号。 FM信号处理器产生由FM立体声信号表示的立体声音频信号。 IBOC信号处理器生成由IBOC数字数据信号表示的数字数据信号。

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