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    Acoustic signal transmission method and apparatus with insertion signal
    71.
    发明授权
    Acoustic signal transmission method and apparatus with insertion signal 失效
    具有插入信号的声信号传输方法及装置

    公开(公告)号：US07657435B2

    公开(公告)日：2010-02-02

    申请号：US11200288

    申请日：2005-08-08

    Applicant: Satoshi Iwaki ,  Akira Nakayama ,  Tamotsu Machino ,  Ikuo Kitagishi ,  Yukihiro Nakamura

    Inventor： Satoshi Iwaki ,  Akira Nakayama ,  Tamotsu Machino ,  Ikuo Kitagishi ,  Yukihiro Nakamura

    IPC: G10L13/00 ,  G01C21/00

    CPC classification number: G01C21/3629 ,  G10L19/018 ,  H04H20/31 ,  H04H20/34 ,  H04H20/93 ,  H04H2201/50

    Abstract: The acoustic signal transmission method is based on generating a synthesized sound electrical signal by electrically synthesizing an audible sound signal and another signal different than the audible sound signal at the sending side, and transmitting the synthesized sound electrical signal, and extracting the another signal different than the audible sound signal from the synthesized sound electrical signal at the receiving side. Here, generation of the synthesized sound electrical signal is made by using a data hiding technique, for example. Accordingly, the acoustic signal represented by the synthesized sound electrical signal can be heard by human ears in the same way as the audible sound signal, and the synthesized another signal cannot be detected by human ears. Here, the synthesized sound electrical signal can be transmitted as a sound wave in air space, as electrical signal through a transmission line or as radio signals such as infrared and electromagnetic waves.

    Abstract translation: 声信号发送方法是基于通过电话合成可听声音信号和与发送侧的可听声音信号不同的另一信号来生成合成声音电信号，并且发送合成声音电信号，并提取不同于 来自接收侧的合成声音电信号的声音信号。 这里，例如通过使用数据隐藏技术来生成合成声音电信号。 因此，由合成声音信号表示的声音信号可以以与可听见的声音信号相同的方式被人耳听到，并且合成的另一信号不能被人耳探测。 这里，合成的声音电信号可以作为空气中的声波作为电信号通过传输线传输，也可以作为无线电信号如红外线和电磁波传输。

    METHOD AND SYSTEM FOR ROBUST WATERMARK INSERTION AND EXTRACTION FOR DIGITAL SET-TOP BOXES
    72.
    发明申请
    METHOD AND SYSTEM FOR ROBUST WATERMARK INSERTION AND EXTRACTION FOR DIGITAL SET-TOP BOXES 有权
    用于数字机顶盒的稳健水印插入和提取的方法和系统

    公开(公告)号：US20090150676A1

    公开(公告)日：2009-06-11

    申请号：US11952772

    申请日：2007-12-07

    Applicant: Sherman Xuemin Chen ,  Stephane Rodgers

    Inventor： Sherman Xuemin Chen ,  Stephane Rodgers

    IPC: H04L9/32

    CPC classification number: H04H20/31 ,  G06T1/0021 ,  H04H2201/50 ,  H04N5/4401 ,  H04N19/44 ,  H04N19/467 ,  H04N21/23892 ,  H04N21/43853 ,  H04N21/8358

    Abstract: Methods and systems for robust watermark insertion and extraction for digital set-top boxes are disclosed and may include descrambling, detecting watermarking messages in a received video signal utilizing a watermark message parser, and immediately watermarking the descrambled video signal utilizing an embedded CPU. The embedded CPU may utilize code that may be signed by an authorized key, encrypted externally to the chip, decrypted, and stored in memory in a region off-limits to other processors. The video signal may be watermarked in a decompressed domain. The enabling of the watermarking may be verified utilizing a watchdog timer. The descriptors corresponding to the watermarking may be stored in memory that may be inaccessible by the main CPU. The watermark may comprise unique identifier data specific to the chip and a time stamp, and may be encrypted utilizing an on-chip combinatorial function.

    Abstract translation: 公开了用于数字机顶盒的鲁棒水印插入和提取的方法和系统，并且可以包括解扰，利用水印消息解析器检测接收到的视频信号中的水印消息，并立即利用嵌入式CPU对解扰的视频信号进行加水印。 嵌入式CPU可以利用可以通过授权密钥进行签名的代码，在芯片外部加密，解密并存储在与其他处理器不同的区域的存储器中。 视频信号可以在解压缩域中加水印。 可以使用看门狗定时器来验证水印的使能。 与水印相对应的描述符可以存储在主CPU可能无法访问的存储器中。 水印可以包括专用于芯片的唯一标识符数据和时间标记，并且可以使用片上组合功能进行加密。

    Signal Watermarking in the Presence of Encryption
    73.
    发明申请
    Signal Watermarking in the Presence of Encryption 有权
    信号水印加密存在

    公开(公告)号：US20080199009A1

    公开(公告)日：2008-08-21

    申请号：US11675352

    申请日：2007-02-15

    Applicant: Akshay Adhikari ,  Sachin Garg ,  Anjur Sundaresan Krishnakumar ,  Navjot Singh

    Inventor： Akshay Adhikari ,  Sachin Garg ,  Anjur Sundaresan Krishnakumar ,  Navjot Singh

    IPC: H04K1/02

    CPC classification number: G06T1/0021 ,  G10L19/018 ,  H04H20/28 ,  H04H20/31 ,  H04H60/23 ,  H04H2201/50 ,  H04L9/065 ,  H04L2209/30 ,  H04L2209/608

    Abstract: A method is disclosed that enables the transmission of a digital message along with a corresponding information signal, such as audio or video. The supplemental information contained in digital messages can be used for a variety of purposes, such as enabling or enhancing packet authentication. In particular, a telecommunications device that is processing an information signal from its user, such as a speech signal, encrypts the information signal by performing a bitwise exclusive-or of an encryption key stream with the information signal stream. The device, such as a telecommunications endpoint, then intersperses the bits of the digital message throughout the encrypted signal in place of those bits overwritten, in a process referred to as “watermarking.” The endpoint then transmits the interspersed digital message bits as part of a composite signal that also comprises the encrypted information bits. No additional bits are appended to the packet to be transmitted, thereby addressing compatibility issues.

    Abstract translation: 公开了一种能够传送数字消息以及对应的信息信号（诸如音频或视频）的方法。 数字消息中包含的补充信息可用于各种目的，例如启用或增强数据包认证。 特别地，正在处理来自其用户的信息信号（例如语音信号）的电信设备通过执行与信息信号流的按位异或加密密钥流来加密信息信号。 在称为“水印”的过程中，诸如电信端点的设备然后在整个加密信号中分散数字消息的位，以代替被覆盖的位。 然后，端点将散布的数字消息比特作为还包括加密信息比特的复合信号的一部分进行发送。 没有额外的位附加到要发送的数据包，从而解决兼容性问题。

    Method and apparatus for transmitting watermark data bits using a spread spectrum, and for regaining watermark data bits embedded in a spread spectrum
    75.
    发明申请
    Method and apparatus for transmitting watermark data bits using a spread spectrum, and for regaining watermark data bits embedded in a spread spectrum 审中-公开
    用于使用扩展频谱发送水印数据位的方法和装置，以及用于恢复嵌入在扩展频谱中的水印数据位

    公开(公告)号：US20070136595A1

    公开(公告)日：2007-06-14

    申请号：US10581771

    申请日：2004-09-13

    Applicant: Peter Baum ,  Walter Voessing

    Inventor： Peter Baum ,  Walter Voessing

    IPC: H04L9/00

    CPC classification number: H04H20/31 ,  G10L19/018 ,  G11B20/00891 ,  H04H2201/50

    Abstract: Spread spectrum technology and the related inserted or added information signal can be used for implementing watermarking digital audio signals. A known processing for retrieving at receiver or decoder side the watermark signal information bit from the spread spectrum is convolving the received or replayed spectrum with a spreading function that is time-inverse with respect to the original spreading function. If BPSK modulation was used for applying the spread spectrum function, the output is a peak at the middle of the sequence of correlation values, the sign of such peak representing the value of the desired watermark signal information bit. According to the invention, in order to cope with echo distortions, two or more orthogonal spreading sequences are used at encoder side with the original or encoded audio signal in baseband. When applying the corresponding time-inverse orthogonal spreading sequences at decoder side, echoes that are longer than each one of spreading sequence's lengths can be fully removed. The spreading sequences applied can be modified at decoder side according to estimated echo delay values.

    Abstract translation: 扩展频谱技术和相关的插入或添加信息信号可用于实现水印数字音频信号。 在接收机或解码​​器侧检索来自扩频的水印信号信息比特的已知处理是用接收或重放的频谱与相对于原始扩展函数的时间反相的扩展函数进行卷积。 如果使用BPSK调制来应用扩频函数，则输出是相关值序列中间的峰值，这种峰值的符号表示所需水印信号信息位的值。 根据本发明，为了应对回波失真，在编码器侧使用原始或编码的音频信号在基带中的两个或更多个正交扩频序列。 当在解码器侧应用相应的时间 - 逆正交扩频序列时，可以完全去除比扩展序列长度中的每一个更长的回波。 可以根据估计的回波延迟值在解码器侧修改所应用的扩展序列。

    Embedding auxiliary data in a signal
    77.
    发明授权
    Embedding auxiliary data in a signal 有权
    在辅助信号中嵌入辅助数据

    公开(公告)号：US07191334B1

    公开(公告)日：2007-03-13

    申请号：US09423273

    申请日：1999-03-02

    Applicant: Antonius A. C. M. Kalker

    Inventor： Antonius A. C. M. Kalker

    IPC: H04L9/00 ,  G06K9/00

    CPC classification number: G06T1/0071 ,  H04H20/31 ,  H04H2201/50 ,  H04N5/913 ,  H04N2005/91335

    Abstract: A method is disclosed for embedding auxiliary data in a signal. The data is encoded into the relative position or phase of one or more basic watermark patterns. This allows multi-bit data to be embedded by using only one or a few distinct watermark patterns.

    Abstract translation: 公开了一种用于将辅助数据嵌入到信号中的方法。 数据被编码成一个或多个基本水印图案的相对位置或相位。 这允许通过仅使用一个或几个不同的水印图案来嵌入多位数据。

    Broadcast encoding system and method
    79.
    发明授权
    Broadcast encoding system and method 有权
    广播编码系统及方法

    公开(公告)号：US06807230B2

    公开(公告)日：2004-10-19

    申请号：US10444409

    申请日：2003-05-23

    Applicant: Venugopal Srinivasan

    Inventor： Venugopal Srinivasan

    IPC: H04B166

    CPC classification number: H04H20/31 ,  H04H20/33 ,  H04H60/37 ,  H04H60/39 ,  H04H2201/50

    Abstract: An encoder is arranged to add a binary code bit to block of a signal by selecting, within the block, (i) a reference frequency within the predetermined signal bandwidth, (ii) a first code frequency having a first predetermined offset from the reference frequency, and (iii) a second code frequency having a second predetermined offset from the reference frequency. The spectral amplitude of the signal at the first code frequency is increased so as to render the spectral amplitude at the first code frequency a maximum in its neighborhood of frequencies and is decreased at the second code frequency so as to render the spectral amplitude at the second code frequency a minimum in its neighborhood of frequencies. Alternatively, the portion of the signal at one of the first and second code frequencies whose spectral amplitude is smaller may be designated as a modifiable signal component such that, in order to indicate the binary bit, the phase of the modifiable signal component is changed so that this phase differs within a predetermined amount from the phase of the reference signal component. As a still further alternative, the spectral amplitude of the first code frequency may be swapped with a spectral amplitude of a frequency having a maximum amplitude in the first neighborhood of frequencies and the spectral amplitude of the second code frequency may be swapped with a spectral amplitude of a frequency having a minimum amplitude in the second neighborhood of frequencies. A decoder may be arranged to decode the binary bit.

    Abstract translation: 编码器被布置为通过在该块内选择（i）预定信号带宽内的参考频率来添加二进制码比特到信号块，（ii）具有从参考频率的第一预定偏移的第一码频率 ，和（iii）具有与参考频率的第二预定偏移的第二代码频率。 在第一编码频率处的信号的频谱幅度增加，以便在频率附近使第一编码频率处的频谱振幅最大，并以第二编码频率减小，以便使频谱幅度在第二编码频率 代码频率在其频率附近最小。 或者，在频谱幅度较小的第一和第二代码频率之一处的信号部分可以被指定为可修改信号分量，使得为了指示二进制位，可修改信号分量的相位改变为 该相位与参考信号分量的相位在预定量之内不同。 作为另外的替代方案，第一编码频率的频谱幅度可以用在第一频率附近具有最大幅度的频率的频谱幅度进行交换，并且第二编码频率的频谱幅度可以用频谱幅度 在第二频率附近具有最小振幅的频率。 解码器可以被布置为对二进制位进行解码。

    Music distribution systems
    80.
    发明申请
    Music distribution systems 有权
    音乐配送系统

    公开(公告)号：US20020111912A1

    公开(公告)日：2002-08-15

    申请号：US09855992

    申请日：2001-05-15

    Inventor： Charles Eric Hunter ,  Bernard L. Ballou JR. ,  Kelly C. Sparks ,  John H. Hebrank

    IPC: G06F017/60

    CPC classification number: G06Q20/1235 ,  G06Q30/06 ,  G07F17/0014 ,  G11B27/031 ,  G11B27/034 ,  G11B2220/2529 ,  G11B2220/2545 ,  G11B2220/2562 ,  G11B2220/41 ,  H04H20/08 ,  H04H20/16 ,  H04H20/31 ,  H04H20/40 ,  H04H20/74 ,  H04H60/06 ,  H04H60/11 ,  H04H60/17 ,  H04H60/18 ,  H04H60/21 ,  H04H60/22 ,  H04H60/23 ,  H04H60/27 ,  H04H60/33 ,  H04H60/63 ,  H04H60/65 ,  H04H60/98 ,  H04H2201/50 ,  H04N7/165 ,  H04N21/2543 ,  H04N21/262 ,  H04N21/44204 ,  H04N21/472 ,  H04N21/6143 ,  H04N21/63345 ,  H04N21/8106 ,  H04N21/8113 ,  H04N21/8355

    Abstract: Music is blanket transmitted (for example, via satellite downlink transmission) to each customer's user station where selected music files are recorded. Customers preselect from a list of available music in advance using an interactive screen selector, and pay only for music that they choose to playback for their enjoyment. An antipiracy nullID tagnull is woven into the recorded music so that any illegal copies therefrom may be traced to the purchase transaction. Music is transmitted on a fixed schedule or through an active scheduling process that monitors music requests from all or a subset of satellite receivers and adjust scheduling according to demand for various CD's. Receivers store selections that are likely to be preferred by a specific customer. In those instances where weather conditions, motion of atmospheric layers or dish obstructions result in data loss, the system downloads the next transmission of the requested CD and uses both transmissions to produce a nullgood copynull. In conjunction with the blanket transmission of more popular music, an automated CD manufacturing facility may be provided to manufacture CD's that are not frequently requested and distribute them by ground transportation.

    Abstract translation: 音乐被毯子传输（例如，通过卫星下行链路传输）到每个客户的用户站，其中记录所选择的音乐文件。 客户预先使用交互式屏幕选择器从可用音乐列表中预选，并且只为他们选择播放的音乐付费享受。 一个反盗版的“ID标签”被编织到录制的音乐中，从而可以追溯到购买交易中。 音乐以固定的时间表或通过主动调度过程进行传输，该过程监视来自卫星接收机的所有或一个子集的音乐请求，并根据对各种CD的需求来调整调度。 收件人存储选择可能是特定客户首选的。 在天气条件，大气层运动或盘障碍导致数据丢失的情况下，系统下载所请求的CD的下一次传输，并使用两个传输来产生“良好的副本”。 结合更受欢迎的音乐的全面传输，可以提供自动CD制造设施来制造不经常请求的CD，并通过地面运输分发CD。

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