公开(公告)号：US20060276145A1

公开(公告)日：2006-12-07

申请号：US11474747

申请日：2006-06-26

申请人： Glenn Walker ,  Eric DiBiaso ,  Michael Hiatt

发明人： Glenn Walker ,  Eric DiBiaso ,  Michael Hiatt

IPC分类号： H04B1/02 ,  H04B1/66

CPC分类号： H04B7/18513 ,  H04L27/183 ,  H04L27/3488

摘要： The present invention provides a method of hierarchically modulating first and second digital data streams in a broadcast system such as an SDAR system that is compatible with legacy receivers. The second digital data stream, but not the first, is provided with a non-binary pseudo-random encoding. A carrier is first modulated, e.g. QPSK, by the first digital data stream; and a second modulation is performed with the encoded second digital data stream. The encoding includes a multiplication of a matrix formed of 2, 3 or 4 consecutive bits of the secondary data stream by a matrix, e.g. a Hadamard matrix to form a product matrix having non-binary values that are used to modify consecutive symbols of the first modulation. The second modulation appears as Gaussian noise to legacy receivers over time.

摘要翻译： 本发明提供了一种在诸如与传统接收机兼容的SDAR系统的广播系统中分级调制第一和第二数字数据流的方法。 第二数字数据流，但不是第一数字数据流被提供有非二进制伪随机编码。 首先调制载体，例如 QPSK，由第一数字数据流; 并且利用编码的第二数字数据流执行第二调制。 编码包括由辅助数据流的2,3或4个连续比特由矩阵形成的矩阵的乘法，例如， 形成具有用于修改第一调制的连续符号的非二进制值的乘积矩阵的哈达玛矩阵。 第二调制随着时间的推移呈现为传统接收机的高斯噪声。

公开(公告)号：US20070104293A1

公开(公告)日：2007-05-10

申请号：US11268120

申请日：2005-11-07

申请人： Michael Hiatt ,  Eric DiBiaso ,  Glenn Walker

发明人： Michael Hiatt ,  Eric DiBiaso ,  Glenn Walker

IPC分类号： H04L27/22

CPC分类号： H04L27/3488 ,  H04L27/183

摘要： A technique for demodulating secondary data from a hierarchically modulated signal includes a number of steps. A gray coded eight phase shift key (8-PSK) hierarchically modulated signal is received that includes primary data and secondary data. An imaginary portion of the signal is determined and a real portion of the signal is determined. An absolute value of the real portion of the signal may then be subtracted from an absolute value of the imaginary portion of the signal to provide the secondary data. The gray coded 8-PSK hierarchically modulated signal may be a uniform gray coded 8-PSK hierarchically modulated signal or a non-uniform gray coded 8-PSK hierarchically modulated signal.

摘要翻译： 用于从分层调制信号中解调次数据的技术包括多个步骤。 接收包括主数据和次要数据的灰度编码的八相移键（8-PSK）分级调制信号。 确定信号的虚部，确定信号的实部。 然后可以从信号的虚部的绝对值中减去信号的实部的绝对值，以提供辅助数据。 灰度编码的8-PSK分层调制信号可以是均匀灰度编码的8-PSK分层调制信号或不均匀灰度编码的8-PSK分层调制信号。

公开(公告)号：US20060274855A1

公开(公告)日：2006-12-07

申请号：US11143044

申请日：2005-06-02

申请人： Eric DiBiaso ,  Michael Hiatt ,  Glenn Walker

发明人： Eric DiBiaso ,  Michael Hiatt ,  Glenn Walker

IPC分类号： H04L27/20

CPC分类号： H04L27/183 ,  H04H20/30 ,  H04H20/67 ,  H04L27/2604

摘要： Additional data may be added to the current SDARS satellite signals as a phase and/or amplitude offset from the legacy quadrature phase shift keying (QPSK) modulated data and transmitted by the SDAR terrestrial repeaters. However, in the case where a legacy receiver architecture for a differential modulation system outputs angular/phase differences between carriers, the phase and/or amplitude information appears as distortion to the legacy receiver. The present invention provides a method for optimizing the SDARS infrastructure more efficiently by allowing independent adjustment of the phase and/or amplitude offset (610) at each terrestrial site. The present invention provides a method for adjusting the performance of each signal together or separately as needed.

摘要翻译： 附加数据可以作为与传统正交相移键控（QPSK）调制数据的相位和/或幅度偏移并由SDAR地面转发器发送的当前SDARS卫星信号相加。 然而，在用于差分调制系统的传统接收器架构输出载波之间的角度/相位差的情况下，相位和/或幅度信息表现为传统接收机的失真。 本发明提供了一种通过允许对每个地面站点处的相位和/或幅度偏移（610）进行独立调整来更有效地优化SDARS基础设施的方法。 本发明提供一种根据需要一起或分开地调整每个信号的性能的方法。

公开(公告)号：US20070147561A1

公开(公告)日：2007-06-28

申请号：US11316530

申请日：2005-12-22

申请人： Glenn Walker ,  Eric DiBiaso

发明人： Glenn Walker ,  Eric DiBiaso

IPC分类号： H04L7/00 ,  H04L7/04

CPC分类号： H04J3/0602

摘要： A system and method of communicating sub-synchronization information into a transmitted digital audio stream and extracting sub-synchronization information from a received digital audio stream is provided. The method includes the steps of having a transmitter introduce sub-synchronization information into a data stream at a period less than that of existing transmitter pre-amble signals, and transmitting that data to a receiver. The method further includes the steps of receiving the transmitted data stream in the receiver circuitry, extracting the synchronization information, and using the synchronization information to accurately decode the received audio data.

摘要翻译： 提供了一种将子同步信息传送到所发送的数字音频流并从接收到的数字音频流中提取副同步信息的系统和方法。 该方法包括以下步骤：使发射机以比现有发射机前同步码信号小的时间段将子同步信息引入到数据流中，并将该数据发射到接收机。 该方法还包括以下步骤：在接收机电路中接收所发送的数据流，提取同步信息，并使用同步信息来精确地解码所接收的音频数据。

公开(公告)号：US20070147532A1

公开(公告)日：2007-06-28

申请号：US11315655

申请日：2005-12-22

申请人： Eric DiBiaso ,  Glenn Walker

发明人： Eric DiBiaso ,  Glenn Walker

IPC分类号： H04L1/02 ,  H04L7/00

CPC分类号： H04B7/18523

摘要： A method and system of communicating sub-synchronization information into a transmitted digital audio stream and extracting sub-synchronization information from a received digital audio stream is provided. The method includes the steps of having a transmitter introduce sub-synchronization information into a data stream at a period less than that of existing pre-amble signals, and transmitting that data to a receiver. The method further includes the steps of receiving the transmitted data stream in the receiver, extracting the synchronization information, and using the synchronization information to accurately decode the received audio data.

摘要翻译： 提供了将子同步信息传送到所发送的数字音频流中并从接收的数字音频流中提取副同步信息的方法和系统。 该方法包括以下步骤：使发射机以比现有的前同步码信号小的时间段将子同步信息引入到数据流中，并将该数据发送到接收机。 该方法还包括以下步骤：在接收机中接收所发送的数据流，提取同步信息，并使用同步信息来精确地解码所接收的音频数据。

公开(公告)号：US20060281401A1

公开(公告)日：2006-12-14

申请号：US11151612

申请日：2005-06-13

申请人： Eric DiBiaso ,  Jayesh Patel

发明人： Eric DiBiaso ,  Jayesh Patel

IPC分类号： H04H1/00

CPC分类号： H04H60/90 ,  H04B7/18523 ,  H04H20/95 ,  H04H40/90 ,  H04H60/27

摘要： The present invention involves a media player and method for providing digital audio data in satellite digital audio radio (SDAR) format. The media player includes a satellite radio receiver, audio circuitry for reproducing sound from signals provided by the satellite radio receiver, and a computer interface circuit configured for accessing audio information files. The media player may have an antenna for receiving satellite radio broadcasts, and another antenna for a wireless connection. The media player may further have a control and display for interfacing with a source of digital audio files, such as through a network connection. The invention also includes a converter for providing audio files from digital audio files that are formatted for satellite digital audio radio (SDAR), with a source interface adapted to connect to a source of audio files, a translator adapted to create an SDAR formatted digital audio file, and a media player interface adapted to connect to a media player. The method of providing satellite digital audio radio (SDAR) formatted digital audio files to a SDAR enabled media player includes accessing a source of digital audio files with an interface of the media player, and playing a SDAR formatted digital audio file with the media player.

摘要翻译： 本发明涉及用于以卫星数字音频无线电（SDAR）格式提供数字音频数据的媒体播放器和方法。 媒体播放器包括卫星无线电接收机，用于从由卫星无线电接收机提供的信号中再现声音的音频电路，以及配置用于访问音频信息文件的计算机接口电路。 媒体播放器可以具有用于接收卫星无线电广播的天线，以及用于无线连接的另一天线。 媒体播放器还可以具有用于与数字音频文件源（例如通过网络连接）对接的控制和显示。 本发明还包括一个转换器，用于从格式化为卫星数字音频无线电（SDAR）的数字音频文件提供音频文件，源接口适于连接到音频文件源，转换器适于创建SDAR格式的数字音频 文件和适于连接到媒体播放器的媒体播放器接口。 向支持SDAR的媒体播放器提供卫星数字音频无线电（SDAR）格式的数字音频文件的方法包括利用媒体播放器的接口访问数字音频文件源，并与媒体播放器一起播放SDAR格式的数字音频文件。