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81. 发明授权

US06737957B1 Remote control signaling using audio watermarks 有权
标题翻译：使用音频水印的遥控信号
公开(公告)号：US06737957B1
公开(公告)日：2004-05-18
申请号：US09505080
申请日：2000-02-16
申请人： Rade Petrovic , Joseph M. Winograd
发明人： Rade Petrovic , Joseph M. Winograd
IPC分类号： G06F700
CPC分类号： G08C23/02 , G06F7/00 , G06Q30/0264 , G10L19/018 , H04B11/00
摘要： A system for using a watermark embedded in an audio signal to remotely control a device. Various devices such as toys, computers, and appliances, equipped with an appropriate detector, detect the hidden signals, which can trigger an action, or change a state of the device. The watermarks can be used with a “time gate” device, where detection of the watermark opens a time interval within which a user is allowed to perform an action, such as pressing a button, typing in an answer, turning a key in a lock, etc. To prevent fraudulent activation of a time gate, the time gate device can be configured to react only to watermarks coming from live broadcasts, and not from replays from tapes or other storage devices. In another feature, robustness of the watermark is improved, e.g., for acoustic propagation channels, by shifting the detection time of the watermark based on a measured bit error count of the watermark. Furthermore, the watermark may be inserted before the desired action along with corresponding offset information if the audio signal is not suitable at the time of the action.
摘要翻译：一种使用嵌入在音频信号中的水印远程控制设备的系统。配备有适当检测器的各种装置，例如玩具，计算机和电器，可以检测可触发动作的隐藏信号或改变装置的状态。水印可以与“时间门”设备一起使用，其中水印的检测打开用户被允许执行动作的时间间隔，诸如按下按钮，输入答案，将键转动到锁定中等等。为了防止时间门的欺骗性激活，时间门装置可以被配置为仅响应来自实时广播的水印，而不是来自磁带或其他存储设备的重放。在另一个特征中，通过基于水印的测量比特误差计数来移动水印的检测时间，改善了水印的鲁棒性，例如对于声传播信道。此外，如果音频信号在动作时不适合，则可以在期望的动作之前插入水印以及对应的偏移信息。

82. 发明授权

US06430301B1 Formation and analysis of signals with common and transaction watermarks 有权
标题翻译：具有公共和事务水印的信号的形成和分析
公开(公告)号：US06430301B1
公开(公告)日：2002-08-06
申请号：US09651729
申请日：2000-08-30
申请人： Rade Petrovic
发明人： Rade Petrovic
IPC分类号： H04K100
CPC分类号： G06F21/10 , G06F2221/0737 , G06T1/005 , G06T2201/0063 , G11B20/00086 , G11B20/00905 , H04L63/12 , H04N1/32144 , H04N1/32304 , H04N5/913 , H04N21/23892 , H04N2005/91335 , H04N2201/3235 , H04N2201/3239 , H04N2201/327
摘要： A system for embedding and detecting digital watermarks, e.g., for copyright protection of digital content distributed via the Internet or other channels. Different copies of content, such as audio data, are formed with a common watermark (CW), and different transaction watermarks (TW). Based on a user transaction request, portions of the different copies of the content are assembled to provide a copy with a unique sequence of TWs associated with the user. A copy of content which is subsequently located can be analyzed to determine if it has been used in a collusion attack, where a pirate attempts to modify the watermarks, e.g., in an averaging or cut-and-splice attack. The CWs are provided in time-aligned intervals of the different copies of the content so they are not modified by the attack. Content from different web sites can be analyzed by first determining if a particular CW is embedded in the content, and, if so, recovering the TW to identify the unauthorized distributor.
摘要翻译：用于嵌入和检测数字水印的系统，例如用于通过因特网或其他信道分发的数字内容的版权保护。使用公共水印（CW）和不同的事务水印（TW）形成诸如音频数据的不同的内容副本。基于用户交易请求，组合内容的不同副本的部分以提供具有与用户相关联的TW的唯一序列的副本。可以分析随后定位的内容的副本，以确定其是否已被用于串通攻击，其中盗版者尝试修改水印，例如在平均或剪切和拼接攻击中。 CW以内容的不同副本的时间对齐的间隔提供，使得它们不被攻击修改。可以通过首先确定特定CW是否嵌入在内容中来分析来自不同网站的内容，如果是，则恢复TW以识别未经授权的分发者。

83. 发明授权

US06427012B1 Apparatus and method for embedding and extracting information in analog signals using replica modulation 失效
标题翻译：使用复制调制在模拟信号中嵌入和提取信息的装置和方法
公开(公告)号：US06427012B1
公开(公告)日：2002-07-30
申请号：US09106213
申请日：1998-06-29
申请人： Rade Petrovic
发明人： Rade Petrovic
IPC分类号： H04N7167
CPC分类号： G06F21/60 , G06T1/0028 , G06T2201/0052 , H04H20/31
摘要： Apparatus and methods are provided for embedding or encoding auxiliary signals into an analog host or cover signal. A replica of the cover signal or a portion of the cover signal in a particular domain (time, frequency or space) is generated according to a stego key specifying modification values to specified parameters of the cover signal. The replica signal is then modified by an auxiliary signal corresponding to the information to be embedded, and inserted back into the cover signal. Embedded auxiliary signals are extracted by generating replicas of received signals and correlating the replicas with the received signals.
摘要翻译：提供了用于将辅助信号嵌入或编码到模拟主机或覆盖信号中的装置和方法。根据将覆盖信号的指定参数的修改值指定为隐写密钥，生成特定域（时间，频率或空间）中的覆盖信号或覆盖信号的一部分的复制品。然后，通过与要嵌入的信息相对应的辅助信号来修改复制信号，并将其插入覆盖信号。通过产生接收信号的副本并将副本与接收到的信号相关联来提取嵌入的辅助信号。

84. 发明授权

US5940135A Apparatus and method for encoding and decoding information in analog signals 失效
标题翻译：用于对模拟信号中的信息进行编码和解码的装置和方法
公开(公告)号：US5940135A
公开(公告)日：1999-08-17
申请号：US858562
申请日：1997-05-19
申请人： Rade Petrovic , Joseph M. Winograd , Kanaan Jemili , Eric Metois
发明人： Rade Petrovic , Joseph M. Winograd , Kanaan Jemili , Eric Metois
IPC分类号： G06T1/00 , H04H20/31 , H04N7/087
CPC分类号： H04H20/31 , G06T1/0028
摘要： Apparatus and methods are provided for encoding, storing and decoding auxiliary information on an analog source signal in a way which has minimal impact on the human perception of the source information when the source signal is applied to an appropriate output device, such as a speaker or a display monitor. The autocorrelation function of a host signal is modulated according to the value of an auxiliary information signal by adding a host modifying signal to the host signal. The auxiliary signal is decoded by generating the autocorrelation function of the encoded signal and extracting the auxiliary signal according to well-known signal extraction techniques.
摘要翻译：提供了装置和方法，用于以对方式对源信息的人感知影响最小的方式对模拟信号源进行编码，存储和解码辅助信息，当源信号被施加到适当的输出装置，例如扬声器或显示监视器。主机信号的自相关函数根据辅助信息信号的值通过向主机信号添加主机修改信号来调制。通过产生编码信号的自相关函数并根据众所周知的信号提取技术提取辅助信号来解码辅助信号。

85. 发明授权

US5590403A Method and system for efficiently providing two way communication between a central network and mobile unit 失效
标题翻译：在中央网络和移动单元之间有效提供双向通信的方法和系统
公开(公告)号：US5590403A
公开(公告)日：1996-12-31
申请号：US973918
申请日：1992-11-12
申请人： Dennis W. Cameron , Walter C. Roehr, Jr. , Rade Petrovic , Jai P. Bhagat , Masood Garahi , William D. Hays , David W. Ackerman
发明人： Dennis W. Cameron , Walter C. Roehr, Jr. , Rade Petrovic , Jai P. Bhagat , Masood Garahi , William D. Hays , David W. Ackerman
IPC分类号： H04H20/67 , H04L27/26 , H04W4/12 , H04W68/00 , H04W68/10 , H04W84/02 , H04W84/06 , H04B7/06
CPC分类号： H04W84/025 , H04H20/67 , H04L27/2626 , H04L27/2647 , H04W68/10 , H04W84/022 , H04L27/2637 , H04W4/12 , H04W84/06
摘要： A two-way communication system for communication between a system network and a mobile unit. The system network includes a plurality of base transmitters and base receivers included in the network. The base transmitters are divided into zonal assignments and broadcast in simulcast using multi-carrier modulation techniques. The system network controls the base transmitters to broadcast in simulcast during both systemwide and zonal time intervals. The system network dynamically alters zone boundaries to maximize information throughput. The preferred mobile unit includes a noise detector circuit to prevent unwanted transmissions. The system network further provides an adaptive registration feature for mobile units which controls the registration operations by the mobile units to maximize information throughput.
摘要翻译：一种用于系统网络和移动单元之间的通信的双向通信系统。系统网络包括网络中包括的多个基站发射机和基站接收机。基地发射机被分为区域分配和使用多载波调制技术在同时广播中广播。系统网络控制基地发射机在系统范围和区域时间间隔期间同时广播。系统网络动态地改变区域边界以最大化信息吞吐量。优选的移动单元包括用于防止不期望的传输的噪声检测器电路。系统网络还为移动单元提供了自适应注册特征，其控制移动单元的注册操作以使信息吞吐量最大化。

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