公开(公告)号：US08731100B2

公开(公告)日：2014-05-20

申请号：US13490401

申请日：2012-06-06

申请人： Jong Moon Kim ,  In Hwan Choi ,  Kook Yeon Kwak ,  Byoung Gill Kim ,  Won Gyu Song ,  Jin Woo Kim ,  Hyoung Gon Lee

发明人： Jong Moon Kim ,  In Hwan Choi ,  Kook Yeon Kwak ,  Byoung Gill Kim ,  Won Gyu Song ,  Jin Woo Kim ,  Hyoung Gon Lee

IPC分类号： H04L27/00

CPC分类号： H04N21/2353 ,  H04L1/006 ,  H04L1/0065 ,  H04L1/007 ,  H04L1/0071 ,  H04L7/027 ,  H04L7/042 ,  H04L27/066 ,  H04L27/2272 ,  H04N5/4401 ,  H04N5/455 ,  H04N21/2383 ,  H04N21/4382

摘要： A method of processing broadcast data in a broadcast transmitting system includes randomizing mobile service data bytes; generating a Reed-Solomon (RS) frame; dividing the RS frame into RS frame portions; converting data bytes of the RS frame portions into data bits; encoding each converted data bit and outputting data symbols corresponding to the encoded data bits; interleaving the data symbols; converting the interleaved data symbols into data bytes; forming data groups including mobile service data corresponding to the converted data bytes, each of the data groups including known data sequences, signaling information, non-systematic RS parity data place holders and MPEG header data place holders; removing the non-systematic RS parity data place holders in the data groups and replacing the MPEG header data place holders in the data groups with MPEG header data to output mobile service data packets; and randomizing the MPEG header data in the mobile service data packets.

摘要翻译： 在广播发送系统中处理广播数据的方法包括随机化移动业务数据字节; 产生里德 - 所罗门（RS）帧; 将RS帧划分为RS帧部分; 将所述RS帧部分的数据字节转换成数据位; 对每个转换的数据位进行编码并输出对应于编码数据位的数据符号; 交织数据符号; 将交织的数据符号转换成数据字节; 形成包括对应于转换的数据字节的移动业务数据的数据组，每个数据组包括已知数据序列，信令信息，非系统RS奇偶校验数据占位符和MPEG头数据占位符; 去除数据组中的非系统RS奇偶校验数据占位符，并用MPEG标题数据替换数据组中的MPEG头数据占位符，以输出移动业务数据包; 并在移动业务数据包中随机化MPEG头数据。

公开(公告)号：US08542779B2

公开(公告)日：2013-09-24

申请号：US13754819

申请日：2013-01-30

申请人： Innophase Inc.

发明人： Yang Xu

IPC分类号： H03D3/18 ,  H03D3/24

CPC分类号： H04L27/2272 ,  H04L27/2071 ,  H04L27/22

摘要： A receiver is described. The receiver includes a first injection-locked oscillator having a first input configured to receive a BPSK signal and a second input configured to receive a first frequency reference. The receiver also includes a second injection-locked oscillator having a third input configured to receive the BPSK signal and a fourth input configured to receive a second frequency reference. Further, the receiver includes a first phase-locked loop coupled with the second input of the first injection-locked oscillator. The first phase-locked loop is configured to generate the first frequency reference. And, a second phase-locked loop is coupled with the fourth input of the second injection-locked oscillator. The second phase-locked loop is configured to generate the second frequency reference.

摘要翻译： 描述接收机。 接收机包括第一注入锁定振荡器，其具有被配置为接收BPSK信号的第一输入和被配置为接收第一频率参考的第二输入。 接收机还包括第二注入锁定振荡器，其具有被配置为接收BPSK信号的第三输入和被配置为接收第二频率参考的第四输入。 此外，接收机包括与第一注入锁定振荡器的第二输入耦合的第一锁相环。 第一锁相环被配置为产生第一频率参考。 并且，第二锁相环与第二注入锁定振荡器的第四输入耦合。 第二锁相环被配置为产生第二频率参考。

公开(公告)号：US20130195157A1

公开(公告)日：2013-08-01

申请号：US13754853

申请日：2013-01-30

申请人： Innophase Inc.

发明人： Yang Xu

IPC分类号： H04L27/20

CPC分类号： H04L27/2272 ,  H04L27/2071 ,  H04L27/22

摘要： A transceiver is described. The transceiver includes a first injection-locked oscillator and a second injection-locked oscillator. The transceiver also includes a first phase-locked loop coupled with the first injection-locked oscillator. The first phase-locked loop is configured to generate a first frequency reference. Further, the transceiver includes a second phase-locked loop coupled the second injection-locked oscillator. The second phase-locked loop is configured to generate a second frequency reference. The transceiver includes a mixer configured to receive the first phase-locked loop output and configured to receive said second injection-locked oscillator output. The mixer is also configured to generate a carrier frequency signal based on the first injection-locked oscillator output and the second injection-locked oscillator output. And, the transceiver includes a modulator configured to receive said carrier frequency signal.

摘要翻译： 描述收发器。 收发器包括第一注入锁定振荡器和第二注入锁定振荡器。 收发器还包括与第一注入锁定振荡器耦合的第一锁相环。 第一锁相环被配置为产生第一频率参考。 此外，收发器包括耦合第二注入锁定振荡器的第二锁相环。 第二锁相环被配置为产生第二频率参考。 收发器包括配置成接收第一锁相环输出并被配置为接收所述第二注入锁定振荡器输出的混频器。 混频器还被配置为基于第一注入锁定振荡器输出和第二注入锁定振荡器输出产生载波频率信号。 并且，收发器包括被配置为接收所述载波频率信号的调制器。

公开(公告)号：US20130182804A1

公开(公告)日：2013-07-18

申请号：US13743214

申请日：2013-01-16

申请人： Renesas Electronics Corporation

发明人： Igarashi Yutaka ,  Katsube Yusaku

IPC分类号： H04L27/00

CPC分类号： H04L27/0002 ,  H04B1/006 ,  H04B1/30 ,  H04B1/406 ,  H04L27/2272

摘要： To reduce the time of reception operation switching between multiple wireless systems, a semiconductor integrated circuit includes a first reception unit including a first analog reception unit and a first digital reception unit, and a digital interface. The first analog reception unit includes a first reception mixer and a first A/D converter, and the first digital reception unit includes a first digital filter. The first reception unit, an oscillator, and a PLL enable switching from a reception operation for a first RF reception signal of a first system to a reception operation for a second RF reception signal of a second system. In a period of an end transition operation of the first digital reception unit in the switching, the PLL starts a lock operation so as to match a frequency of an oscillation output signal generated from the oscillator to a desired frequency of the second system.

摘要翻译： 为了减少在多个无线系统之间的接收操作切换的时间，半导体集成电路包括包括第一模拟接收单元和第一数字接收单元的第一接收单元以及数字接口。 第一模拟接收单元包括第一接收混频器和第一A / D转换器，第一数字接收单元包括第一数字滤波器。 第一接收单元，振荡器和PLL使得能够从第一系统的第一RF接收信号的接收操作切换到第二系统的第二RF接收信号的接收操作。 在切换中第一数字接收单元的结束转换操作的周期期间，PLL开始锁定操作，以将从振荡器产生的振荡输出信号的频率与第二系统的期望频率相匹配。

公开(公告)号：US20120038831A1

公开(公告)日：2012-02-16

申请号：US13280263

申请日：2011-10-24

申请人： Jong Moon Kim ,  In Hwan Choi ,  Kook Yeon Kwak ,  Byoung Gill Kim ,  Won Gyu Song ,  Jin Woo Kim ,  Hyoung Gon Lee

发明人： Jong Moon Kim ,  In Hwan Choi ,  Kook Yeon Kwak ,  Byoung Gill Kim ,  Won Gyu Song ,  Jin Woo Kim ,  Hyoung Gon Lee

IPC分类号： H04N5/38

CPC分类号： H04N21/2353 ,  H04L1/006 ,  H04L1/0065 ,  H04L1/007 ,  H04L1/0071 ,  H04L7/027 ,  H04L7/042 ,  H04L27/066 ,  H04L27/2272 ,  H04N5/4401 ,  H04N5/455 ,  H04N21/2383 ,  H04N21/4382

摘要： A digital television (DTV) receiving system includes an information detector, a resampler, a timing recovery unit, and a carrier recovery unit. The information detector detects a known data sequence which is periodically inserted in a digital television (DTV) signal received from a DTV transmitting system. The resampler resamples the DTV signal at a predetermined resampling rate. The timing recovery unit performs timing recovery on the DTV signal by detecting a timing error from the resampled DTV signal using the detected known data sequence. The carrier recovery unit performs carrier recovery on the resampled DTV signal by estimating a frequency offset value of the resampled DTV signal using the detected known data sequence.

摘要翻译： 数字电视（DTV）接收系统包括信息检测器，重采样器，定时恢复单元和载波恢复单元。 信息检测器检测周期性地插入从DTV发送系统接收的数字电视（DTV）信号中的已知数据序列。 重采样器以预定的重采样率重新采样DTV信号。 定时恢复单元通过使用检测到的已知数据序列从重新采样的DTV信号中检测定时误差来执行DTV信号上的定时恢复。 载波恢复单元通过使用检测到的已知数据序列估计重新采样的DTV信号的频率偏移值，对再采样的DTV信号进行载波恢复。

公开(公告)号：US07929594B2

公开(公告)日：2011-04-19

申请号：US11430009

申请日：2006-05-09

申请人： Takao Okazaki ,  Satoru Fukuchi

发明人： Takao Okazaki ,  Satoru Fukuchi

IPC分类号： H04B1/38 ,  H04L27/00 ,  H04L7/00

CPC分类号： H04L27/2272 ,  H03M1/0607 ,  H03M1/682 ,  H03M1/765 ,  H04L2027/0028 ,  H04L2027/0055

摘要： A total power consumption of a radio communication apparatus is reduced, the radio communication apparatus including a semiconductor integrated circuit (high-frequency IC) which has a clock generation circuit which generates a reference clock signal for use in modulating a transmit signal and demodulating a received signal. The clock generation circuit is provided with a voltage-controlled oscillator circuit (VCXO) which oscillates, when a quartz oscillator is connected thereto, at a frequency dependent on a natural frequency of the quartz oscillator and a control voltage applied thereto. The voltage-controlled oscillator circuit is configured such that a result obtained by converting, in an internal D/A converter circuit, digital frequency control information supplied from the baseband circuit is applied as the control voltage to the voltage-controlled oscillator circuit and such that the voltage-controlled oscillator circuit oscillates at a frequency corresponding to the control voltage.

摘要翻译： 无线电通信装置的总功耗降低，无线电通信装置包括半导体集成电路（高频IC），该半导体集成电路具有时钟发生电路，该时钟产生电路产生用于调制发送信号的基准时钟信号， 信号。 时钟发生电路设置有压电振荡器电路（VCXO），当石英振荡器与其连接时，振荡器以与石英振荡器的固有频率相关的频率和施加到其的控制电压振荡。 压控振荡器电路被配置为使得通过在内部D / A转换器电路中转换从基带电路提供的数字频率控制信息而获得的结果作为控制电压被施加到压控振荡器电路，并且使得 压控振荡器电路以对应于控制电压的频率振荡。

公开(公告)号：US07817759B2

公开(公告)日：2010-10-19

申请号：US12079377

申请日：2008-03-26

申请人： Yimin Jiang ,  Feng-Wen Sun ,  Lin-Nan Lee ,  Neal Becker

发明人： Yimin Jiang ,  Feng-Wen Sun ,  Lin-Nan Lee ,  Neal Becker

IPC分类号： H04L7/00

CPC分类号： H04L27/2272 ,  H04L7/048 ,  H04L2027/0028 ,  H04L2027/0055 ,  H04L2027/0067 ,  H04L2027/0093 ,  H04L2027/0095

摘要： An approach is provided for supporting carrier synchronization in a digital broadcast and interactive system. A carrier synchronization module receives one or more signals representing a frame that includes one or more overhead fields (e.g., preamble and optional pilot blocks and one or multiple segments separated by pilot blocks). The module estimates carrier frequency and phase on a segment by segment basis and tracks frequency between segments. Carrier phase of the signal is estimated based upon the overhead field. Estimates carrier phase of random data field are determined based upon the estimated phase values from the overhead fields, and upon both the past and future data signals. Further, the frequency of the signal is estimated based upon the overhead fields and/or the random data field. The above arrangement is particularly suited to a digital satellite broadcast and interactive system.

摘要翻译： 提供了一种用于在数字广播和交互系统中支持载波同步的方法。 载波同步模块接收表示包括一个或多个开销字段（例如，前导码和可选导频块以及由导频块分隔的一个或多个片段）的帧的一个或多个信号。 该模块逐段估计载波频率和相位，并跟踪段之间的频率。 信号的载波相位基于开销字段来估计。 基于来自架空领域的估计相位值以及过去和未来数据信号来估计随机数据字段的载波相位。 此外，基于开销字段和/或随机数据字段来估计信号的频率。 上述布置特别适用于数字卫星广播和交互式系统。

公开(公告)号：US07778281B2

公开(公告)日：2010-08-17

申请号：US10132528

申请日：2002-04-24

申请人： Yoshitaka Ohta ,  Seiji Harada ,  Yasuo Hamamoto

发明人： Yoshitaka Ohta ,  Seiji Harada ,  Yasuo Hamamoto

IPC分类号： H04J3/06

CPC分类号： H04L65/602 ,  H04L27/2272 ,  H04L29/06027 ,  H04L65/80

摘要： A wireless communication apparatus is provided which is capable of performing synchronous transmission of a stream such as a video signal and therefore performing high-quality video transmission. The sending side generates time information based on a count of a beacon timer, adds the time information to a data packet of a video signal and sends the data packet. The receiving side, using PLL based on a timer count contained in a beacon, generates a clock having a higher frequency every time a beacon signal is received. The receiving side counts the clocks and accordingly generates new time information. This time information is compared with the time information added to the received data packet of the video signal, and the data packet is outputted only when the two match with each other.

摘要翻译： 提供一种无线通信装置，其能够执行诸如视频信号的流的同步传输，并因此执行高质量的视频传输。 发送侧基于信标定时器的计数生成时间信息，将时间信息添加到视频信号的数据分组，并发送数据分组。 接收侧基于包含在信标中的定时器计数使用PLL，每当接收到信标信号时，生成具有较高频率的时钟。 接收端对时钟进行计数，从而产生新的时间信息。 将该时间信息与添加到视频信号的接收数据分组的时间信息进行比较，并且仅当两者相互匹配时才输出数据分组。

公开(公告)号：US07539251B2

公开(公告)日：2009-05-26

申请号：US11374512

申请日：2006-03-13

申请人： Daniel L. Boritzki ,  Michael Bernard Luntz

发明人： Daniel L. Boritzki ,  Michael Bernard Luntz

IPC分类号： H04L27/00

CPC分类号： H04L27/183 ,  H04L1/005 ,  H04L1/0066 ,  H04L1/0071 ,  H04L27/2272

摘要： A communications system may include a transmitting device for transmitting a modulated signal therefrom based upon first and second input data. The transmitting device may include a baseband injected pilot carrier (BPIC) generator for selectively generating BPIC data corresponding to the first input data, an interleaver for interleaving BPIC data with the second input data, and a modulator for modulating the interleaved BPIC data based upon a first modulation type and modulating the second input data based upon a second modulation type to provide a modulated signal. The communications system may further include a receiving device for receiving the modulated signal from the transmitting device. The receiving device may include a BPIC detector and a demodulator cooperating with the BPIC detector for demodulating the modulated signal from the transmitting device based upon the BPIC data to generate the first and second input data.

摘要翻译： 通信系统可以包括用于基于第一和第二输入数据从其发送调制信号的发送设备。 发射设备可以包括用于选择性地生成对应于第一输入数据的BPIC数据的基带注入导频载波（BPIC）发生器，用于将BPIC数据与第二输入数据交织的交织器，以及用于基于 第一调制类型，并且基于第二调制类型调制第二输入数据以提供调制信号。 通信系统还可以包括用于从发送设备接收调制信号的接收设备。 接收设备可以包括BPIC检测器和与BPIC检测器协作的解调器，用于基于BPIC数据解调来自发送设备的调制信号，以生成第一和第二输入数据。

公开(公告)号：US20080181344A1

公开(公告)日：2008-07-31

申请号：US12079377

申请日：2008-03-26

申请人： Yimin Jiang ,  Feng-Wen Sun ,  Lin-Nan Lee ,  Neal Becker

发明人： Yimin Jiang ,  Feng-Wen Sun ,  Lin-Nan Lee ,  Neal Becker

IPC分类号： H04L7/00

CPC分类号： H04L27/2272 ,  H04L7/048 ,  H04L2027/0028 ,  H04L2027/0055 ,  H04L2027/0067 ,  H04L2027/0093 ,  H04L2027/0095

摘要： An approach is provided for supporting carrier synchronization in a digital broadcast and interactive system. A carrier synchronization module receives one or more signals representing a frame that includes one or more overhead fields (e.g., preamble and optional pilot blocks and one or multiple segments separated by pilot blocks). The module estimates carrier frequency and phase on a segment by segment basis and tracks frequency between segments. Carrier phase of the signal is estimated based upon the overhead field. Estimates carrier phase of random data field are determined based upon the estimated phase values from the overhead fields, and upon both the past and future data signals. Further, the frequency of the signal is estimated based upon the overhead fields and/or the random data field. The above arrangement is particularly suited to a digital satellite broadcast and interactive system.