公开(公告)号：WO1998027504A2

公开(公告)日：1998-06-25

申请号：PCT/US1997021952

申请日：1997-12-02

Applicant: SOLANA TECHNOLOGY DEVELOPMENT CORPORATION

Inventor： SOLANA TECHNOLOGY DEVELOPMENT CORPORATION ,  LEE, Chong, U. ,  MOALLEMI, Kamran ,  WARREN, Robert, L.

IPC: G06K00/00

CPC classification number: H04H20/31 ,  G10L19/018 ,  H04B1/665 ,  H04B1/707 ,  H04B15/04 ,  H04J7/00 ,  H04J9/00 ,  H04J13/00 ,  H04J13/0077 ,  H04J15/00

Abstract: Auxiliary data (x(m)) is transported in a primary data signal (s(t)) by hiding the data in the form of colored noise. The colored noise has a spectrum that simulates the spectrum of the primary data signal. The data to be transported is first converted to a spread spectrum signal d(t). The primary data signal is analyzed to determine its spectral shape. The same spectral shape is imparted to the spread spectrum signal, which is then combined with the primary data signal for transmission. The spectral shaping can be performed using time domain modeling and synthesis such as linear predictive coding (88, 94) or by using subband coding techniques such as fast Fourier transforms (174). A plurality of different auxiliary information streams (280, 290, 300) can be transported on the primary data signal. By adjusting the gain (287, 297, 307, 309) of individual spread spectrum signal carrier(s) and the power (96) of the colored noise, the auxiliary information stream(s) can be rendered at any desired level below or above an interference threshold in the primary data signal.

Abstract translation: 通过以彩色噪声的形式隐藏数据，辅助数据（x（m））以主数据信号（s（t））传送。 彩色噪声具有模拟主数据信号频谱的频谱。 首先将要传送的数据转换为扩频信号d（t）。 分析主数据信号以确定其光谱形状。 对扩频信号赋予相同的光谱形状，然后将其与主数据信号组合以进行传输。 可以使用诸如线性预测编码（88,94）的时域建模和合成或者通过使用诸如快速傅里叶变换的子带编码技术来执行频谱整形（174）。 可以在主数据信号上传输多个不同的辅助信息流（280,290,300）。 通过调整各个扩展频谱信号载波的增益（287,297,307,309）和彩色噪声的功率（96），辅助信息流可以在任何低于或高于 主数据信号中的干扰阈值。

公开(公告)号：WO1997021293A1

公开(公告)日：1997-06-12

申请号：PCT/US1996019283

申请日：1996-12-05

Applicant: SOLANA TECHNOLOGY DEVELOPMENT CORPORATION

Inventor： SOLANA TECHNOLOGY DEVELOPMENT CORPORATION ,  LEE, Chong, U. ,  MOALLEMI, Kamran ,  HINDERLING, Jurg

IPC: H04L05/00

CPC classification number: G10L19/018 ,  H04B1/665 ,  H04B1/707 ,  H04B2201/70715

Abstract: Auxialiary data subband samples representing an auxiliary data signal (315) are transported in a subband-coded compressed digital audio signal without decompressing the data. A pre-existing packetized data stream (305) is provided to an input of an encoder (310). Subband audio samples (406) are extracted from the packet stream and normalized (408). The data to be transported modulates data carrier subbands (SPD0, SPD1, ---SPDN-1) including a pseudo-noise (PN) spread spectrum signal, each subband of which has a bandwidth corresponding to those of the digital audio signal. The modulated data carrier sequence is combined with the audio subband samples (SS1, SS2---SSN-1) to form a combined signal (452), then multiplexed (460) into pre-existing packet stream (407). In the decoder (368), the combined signal is demodulated to recover the auxiliary data signal (672). The recovered auxiliary data signal is carried substantially inaudibly in the audio signal and is spectrally shaped according to the audio signal to enhance concealment.

Abstract translation: 代表辅助数据信号（315）的辅助数据子带样本在子带编码的压缩数字音频信号中被传送而不解压缩数据。 将预先存在的分组数据流（305）提供给编码器（310）的输入。 从分组流中提取子带音频样本（406）并进行归一化（408）。 要传输的数据调制包括伪噪声（PN）扩频信号的数据载波子带（SPD0，SPD1，...，SPDN-1），每个子带的带宽与数字音频信号的带宽相对应。 调制数据载波序列与音频子带样本（SS1，SS2 --- SSN-1）组合以形成组合信号（452），然后多路复用（460）到预先存在的分组流（407）中。 在解码器（368）中，组合信号被解调以恢复辅助数据信号（672）。 所恢复的辅助数据信号基本上无声地传送到音频信号中，并且根据音频信号进行频谱成形以增强隐藏。

公开(公告)号：WO1997021279A1

公开(公告)日：1997-06-12

申请号：PCT/US1996019234

申请日：1996-12-04

Applicant: SOLANA TECHNOLOGY DEVELOPMENT CORPORATION

Inventor： SOLANA TECHNOLOGY DEVELOPMENT CORPORATION ,  WARREN, Robert, L. ,  LEE, Chong, U. ,  MOALLEMI, Kamran

IPC: H04B01/69

CPC classification number: G11B20/10 ,  G11B20/00086 ,  G11B20/0021 ,  G11B20/00253 ,  G11B20/00333 ,  G11B20/00507 ,  G11B20/00753 ,  G11B20/00768 ,  G11B20/00818 ,  G11B20/00913 ,  G11B27/034 ,  G11B2220/2545 ,  G11B2220/2562 ,  H04B1/665 ,  H04H20/31 ,  H04N5/913 ,  H04N7/17336 ,  H04N9/8042 ,  H04N9/8227 ,  H04N2005/91328 ,  H04N2005/91342 ,  H04N2005/9135 ,  H04N2005/91364

Abstract: Reproduction of a data signal which is stored on a source media (140) or distributed via a communication network is controlled by inserting master tag data (130) and control tag data (160) into the data signal. A player/recorder (150) inserts an additional generation of control tag information each time a copy of the media is made. If the number of generations of the control tag information is above a threshold value, reproduction of the data signal may be inhibited. For example, if the data signal comprises audio data, the player/recorder may only allow playing of the audio signal over speakers but will not allow recording. The playing and recording of associated signals, which accompany an audio signal, may also be controlled. The master tag data (130) and control tag data (160) may be provided as spread spectrum signals which are spectrally shaped and power-adjusted according to the data signal to render them imperceptible in the data signal.

Abstract translation: 通过将主标签数据（130）和控制标签数据（160）插入到数据信号中来控制存储在源媒体（140）上或经由通信网络分发的数据信号的再现。 播放器/记录器（150）在每次制作媒体副本时插入附加的一代控制标签信息。 如果控制标签信息的代数超过阈值，则可以抑制数据信号的再现。 例如，如果数据信号包括音频数据，则播放器/记录器可以仅允许在扬声器上播放音频信号，但不允许记录。 伴随音频信号的相关信号的播放和记录也可以被控制。 主标签数据（130）和控制标签数据（160）可以被提供为根据数据信号进行频谱形状和功率调整的扩展频谱信号，以使它们在数据信号中不可察觉。

公开(公告)号：WO1997009797A1

公开(公告)日：1997-03-13

申请号：PCT/US1996013516

申请日：1996-08-20

Applicant: SOLANA TECHNOLOGY DEVELOPMENT CORPORATION

Inventor： SOLANA TECHNOLOGY DEVELOPMENT CORPORATION ,  LEE, Chong, U. ,  MOALLEMI, Kamran ,  WARREN, Robert, L.

IPC: H04B15/00

CPC classification number: H04H20/31 ,  G10L19/018 ,  H04B1/665 ,  H04B1/707 ,  H04B15/04 ,  H04J7/00 ,  H04J9/00 ,  H04J13/00 ,  H04J13/0077 ,  H04J15/00

Abstract: Auxiliary data (x(m)) is transported in a conventional audio signal (s(t)) by hiding the data in the form of colored noise (y(t)). The colored noise has a spread spectrum that simulates the spectrum of the primary audio signal. The data to be transported is first converted to a spread spectrum signal (p(n)). The primary audio signal is analyzed to determine its spectral shape (88). The same spectral shape is imparted to the spread spectrum signal (94), which is then combined with the primary audio signal for transmission (100). The spectral shaping can be performed using time domain modeling and synthesis such as linear predictive coding (88) or by using subband coding techniques such as fast Fourier transforms. A plurality of different auxiliary information streams can be transported on the audio signal. By adjusting the gain of individual spread spectrum signal carrier(s) and the power of the colored noise (98), the auxiliary information stream(s) can be rendered inaudible in the primary audio signal, or at any desired level below or above an audible threshold.

Abstract translation: 通过以彩色噪声（y（t））的形式隐藏数据，辅助数据（x（m））以常规音频信号（s（t））传送。 彩色噪声具有模拟主音频信号频谱的扩展频谱。 要传输的数据首先转换为扩频信号（p（n））。 分析主音频信号以确定其频谱形状（88）。 对扩频信号（94）赋予相同的光谱形状，然后将其与用于传输的主音频信号（100）组合。 可以使用诸如线性预测编码（88）的时域建模和合成或者通过使用诸如快速傅里叶变换的子带编码技术来执行频谱整形。 可以在音频信号上传输多个不同的辅助信息流。 通过调整各个扩展频谱信号载波的增益和彩色噪声的功率（98），辅助信息流可以在主音频信号中或在任何低于或高于 可听阈值。