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    Receiver
    1.
    发明授权
    Receiver 失效
    接收器

    公开(公告)号：US06714600B1

    公开(公告)日：2004-03-30

    申请号：US09332717

    申请日：1999-06-14

    申请人： Taiwa Okanobu

    发明人： Taiwa Okanobu

    IPC分类号： H04L2706

    CPC分类号： H04H20/33 ,  H04H40/18 ,  H04H2201/17

    摘要： A reception circuit 10 for receiving an analog broadcast and outputting an audio signal based on the analog broadcast includes a digital demodulation circuit 28 for digitally demodulating an intermediate frequency signal obtained in the reception circuit 10 at the reception time of the digital broadcast is and outputting the audio signal based on the digital broadcast, a control circuit 34 for controlling the operating power source voltage of the digital demodulation circuit 28, a detection circuit 31 for detecting the reception of the analog broadcast, and a detection circuit 32 for detecting the reception of the digital broadcast. only when the detection circuit 31 detects the broadcast wave signal of the analog broadcast at the station-selection time and the detection circuit 32 detects the broadcast wave signal of the digital broadcast, the operating power source voltage supplied to the digital demodulation circuit 28 by the control circuit 34.

    摘要翻译： 用于接收模拟广播并基于模拟广播输出音频信号的接收电路10包括数字解调电路28，用于数字解调在数字广播的接收时间在接收电路10中获得的中频信号，并输出 基于数字广播的音频信号，用于控制数字解调电路28的工作电源电压的控制电路34，用于检测模拟广播的接收的检测电路31，以及检测电路32的接收的检测电路32 数字广播。 只有当检测电路31在站选择时间检测到模拟广播的广播波信号并且检测电路32检测到数字广播的广播波信号时，由数字解调电路28提供的工作电源电压 控制电路34。

    Method and system for simultaneously broadcasting and receiving digital and analog signals
    2.
    发明授权
    Method and system for simultaneously broadcasting and receiving digital and analog signals 失效
    用于同时广播和接收数字和模拟信号的方法和系统

    公开(公告)号：US06563880B1

    公开(公告)日：2003-05-13

    申请号：US09298093

    申请日：1999-04-22

    申请人： Bill J. Hunsinger ,  Derek D. Kumar

    发明人： Bill J. Hunsinger ,  Derek D. Kumar

    IPC分类号： H04H500

    CPC分类号： H04L27/2601 ,  H04B1/406 ,  H04B1/707 ,  H04H20/30 ,  H04H20/33 ,  H04H2201/17 ,  H04H2201/183 ,  H04J9/00 ,  H04J13/004 ,  H04J13/12 ,  H04J2013/0037 ,  H04L5/023

    摘要： A system and method for transmitting digital information through a medium such as atmospheric free-space includes a transmitter which generates a signal based on a basis set of mutually orthogonal, spectrally-shaped, sequences of substantially equal length and having predetermined autocorrelation values. The sequences may resemble noise in at least some of their characteristics. The orthogonality or cross-correlation characteristics, the autocorrelation characteristics and the resemblance to noise are due to features derived from sequences of pseudo-random numbers which themselves resemble noise in at least some of their characteristics. The waveform set based on the sequences is modulated digitally. The modulated set may be summed together along with a wideband reference signal of reduced amplitude and optionally an FM analog signal to form a composite signal which is broadcast typically through free space to at least one receiver. The receiver separates the analog FM signal from the digital signal and thereafter demodulates the digital data-carrying waveforms and outputs a stream of digital data. It has been determined to be resistant to multipath degradation.

    摘要翻译： 用于通过诸如大气自由空间的介质发送数字信息的系统和方法包括：发射机，其基于基本相等长度的相互正交，频谱形状的序列的基本集合生成信号，并具有预定的自相关值。 这些序列可能至少在其某些特征中类似于噪声。 正交性或互相关特性，自相关特性和与噪声的相似性是由于其自身类似于其至少某些特征中的噪声的伪随机数序列导出的特征。 基于序列的波形集合被数字地调制。 调制集可以与减小幅度的宽带参考信号和可选的FM模拟信号一起被合并在一起，以形成通常通过自由空间广播到至少一个接收机的复合信号。 接收器将模拟FM信号与数字信号分开，然后解调数字数据携带波形并输出数字数据流。 已经确定耐多种降解。

    Joint multiple program error concealment for digital audio broadcasting and other applications
    3.
    发明授权
    Joint multiple program error concealment for digital audio broadcasting and other applications 有权
    联合多程序错误隐藏数字音频广播等应用

    公开(公告)号：US06357029B1

    公开(公告)日：2002-03-12

    申请号：US09238138

    申请日：1999-01-27

    申请人： Deepen Sinha ,  Carl-Erik Wilhelm Sundberg

    发明人： Deepen Sinha ,  Carl-Erik Wilhelm Sundberg

    IPC分类号： H03M1300

    CPC分类号： H04L1/0083 ,  H04H2201/17 ,  H04H2201/20 ,  H04L1/0054 ,  H04L1/0065 ,  H04L1/0071 ,  H04L1/08

    摘要： Methods and apparatus for processing information, e.g., audio, video or image information, for transmission in a communication system are disclosed. In an illustrative embodiment, a multiple program coder encodes a bitstream for each of the programs, in accordance with a specified bit allocation. An outer code encoder receives the encoded bitstreams from the multiple program coder, and jointly applies an outer code, e.g., a CRC code, RS code, BCH code or other type of linear block code, to subblocks of a subset of the resulting encoded bitstreams. The outer code is applied such that subblocks of each of the encoded bitstreams in the subset of the encoded bitstrcams are associated with a single outer code block. The number of subblocks associated with a given outer code block may be an integer or non-integer number of code blocks. The invention allows a designated number of program subblocks to share a given outer code block, such that outer code error flags can be generated for smaller groups of bits per program than would otherwise be possible. An inner code encoder may be used to apply an inner code, e.g., a convolutional code, turbo code or trellis coded modulation, to the resulting outer code blocks.

    摘要翻译： 公开了用于处理用于在通信系统中传输的信息的方法和装置，例如音频，视频或图像信息。 在说明性实施例中，多程序编码器根据指定的位分配对每个程序的比特流进行编码。 外码编码器从多节目编码器接收编码的比特流，并且将外码（例如，CRC码，RS码，BCH码或其他类型的线性块码）联合应用于所得编码比特流的子集的子块 。 应用外部代码，使得编码比特率的子集中的每个编码比特流的子块与单个外部码块相关联。 与给定外部码块相关联的子块的数量可以是整数或非整数个码块。 本发明允许指定数量的程序子块共享给定的外部码块，使得可以针对比其他情况下可能的每个节目的较小比特组生成外部码错误标志。 内码编码器可以用于将内码（例如，卷积码，turbo码或网格编码调制）应用于所得到的外码块。

    Joint multiple program coding for digital audio broadcasting and other applications
    4.
    发明授权
    Joint multiple program coding for digital audio broadcasting and other applications 有权
    联合多重程序编码用于数字音频广播等应用

    公开(公告)号：US06931372B1

    公开(公告)日：2005-08-16

    申请号：US09238136

    申请日：1999-01-27

    申请人： Deepen Sinha ,  Carl-Erik Wilhelm Sundberg

    发明人： Deepen Sinha ,  Carl-Erik Wilhelm Sundberg

    IPC分类号： G10L19/00 ,  H03M7/30 ,  H04H20/00 ,  H04L1/00 ,  G10L3/02 ,  G10L19/02

    CPC分类号： H04L1/0083 ,  G10L19/005 ,  H04H2201/17 ,  H04H2201/20 ,  H04L1/0065 ,  H04L1/007

    摘要： The invention provides methods and apparatus for processing information, e.g., audio, video or image information, for transmission in a communication system. In an illustrative embodiment, a joint multiple program coder determines the value of a single-bit or multiple-bit criticality measure, e.g., criticality flag, in a designated interval, e.g., the duration of an audio frame, for each of the programs in a set of multiple programs to be transmitted in the system. The joint multiple program coder allocates a pool of available bits to the programs based at least in part on the determined values of the criticality measures, such that a program with a higher-valued criticality measure in the designated time interval is allocated a greater percentage of the available bits for that interval than another one of the programs with a lower-valued criticality measure. The joint multiple program coder repeats the determination and allocation operations for each of a number of time intervals, e.g., frames, such that the bit allocation can vary from interval to interval.

    摘要翻译： 本发明提供了用于处理用于在通信系统中传输的信息（例如，音频，视频或图像信息）的方法和装置。 在说明性实施例中，联合多程序编码器在指定的间隔（例如音频帧的持续时间）中确定单位或多位关键性度量的值，例如临界标志，对于每个 一组要在系统中传输的多个程序。 联合多程序编码器至少部分地基于所确定的关键性度量的值将可用位的池分配给程序，使得在指定的时间间隔中具有较高价值的关键性度量的程序被分配更大百分比的 该间隔的可用位数比具有较低价值临界度量度的另一个程序的可用位数。 联合多程序编码器对于多个时间间隔（例如帧）中的每一个重复确定和分配操作，使得位分配可以随时间间隔变化。

    Multiple program unequal error protection for digital audio broadcasting and other applications
    5.
    发明授权
    Multiple program unequal error protection for digital audio broadcasting and other applications 有权
    多程序数字音频广播和其他应用程序的不平等错误保护

    公开(公告)号：US06223324B1

    公开(公告)日：2001-04-24

    申请号：US09225794

    申请日：1999-01-05

    申请人： Deepen Sinha ,  Carl-Erik Wilhelm Sundberg

    发明人： Deepen Sinha ,  Carl-Erik Wilhelm Sundberg

    IPC分类号： H03M1335

    CPC分类号： H04L1/007 ,  H04H2201/17

    摘要： The invention provides methods and apparatus for processing information, e.g., audio, video or image information, for transmission in a communication system. In an illustrative embodiment, the value of a single-bit or multiple-bit criticality flag is determined for each of the programs in a set of multiple programs to be transmitted in the system. The information bits for each of the programs are then separated into n classes, where n is greater than or equal to two, based on the values of the criticality flags for the programs. Each of the classes is provided with a different level of error protection, e.g., through the use of different convolutional codes or other suitable techniques. The program or programs having the highest criticality flag values in a given frame or other designated time interval thus have a larger percentage of their information bits assigned to the class that is provided with the highest level of error protection. The assignment of the multiple program bits to the classes, as well as the characteristics of the classes, may be fixed for a designated number of program frames, or dynamic, i.e., permitted to vary from frame to frame.

    摘要翻译： 本发明提供了用于处理用于在通信系统中传输的信息（例如，音频，视频或图像信息）的方法和装置。 在说明性实施例中，针对要在系统中发送的多个节目的集合中的每个节目确定单比特或多比特关键性标志的值。 然后根据程序临界性标志的值，将每个程序的信息位分成n个类，其中n大于或等于2。 每个类别都具有不同级别的错误保护，例如通过使用不同的卷积码或其他合适的技术。 因此，给定帧或其他指定时间间隔中具有最高临界标志值的程序具有分配给具有最高级错误保护级别的信息位的较大百分比。 多个程序位对类的分配以及类的特性可以针对指定数量的程序帧而定，或者是动态的，即被允许在帧间变化。