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    • 5. 发明授权
    • Interactive content acquisition using embedded codes
    • 使用嵌入式代码进行交互式内容采集
    • US09596521B2
    • 2017-03-14
    • US14656578
    • 2015-03-12
    • Verance Corporation
    • Joseph M. WinogradJian ZhaoRade Petrovic
    • H04N5/445H04N21/8358H04N21/442H04N21/435H04N21/44H04N21/2668H04N21/437H04N21/226G06F21/10
    • H04N21/8358G06F21/10H04N21/2265H04N21/2668H04N21/435H04N21/437H04N21/44008H04N21/44204
    • Methods and devices are provided to obtain associated information for a multimedia content. One such method includes receiving a content at a receiver device equipped with a watermark detector, performing watermark detection on the received content to extract a payload of an embedded watermark. The payload comprises a first field that includes a server identifier and a second field that includes an interval identifier associated with the server identifier. The first field provides a mapping to an Internet address accessible to retrieve metadata associated with content segments identified by the watermark payload. In this method, based on the detected watermark payload, a query is formed and transmitted to a server identified by the Internet address, and a response to the query is received from the server that includes metadata associated with the content.
    • 提供方法和设备以获得关于多媒体内容的相关信息。 一种这样的方法包括在配备有水印检测器的接收机设备处接收内容,对接收到的内容执行水印检测以提取嵌入水印的有效载荷。 有效载荷包括包括服务器标识符的第一字段和包括与服务器标识符相关联的间隔标识符的第二字段。 第一个字段提供可访问的互联网地址的映射,以检索与由水印有效负载标识的内容段相关联的元数据。 在该方法中,基于检测到的水印有效载荷,形成查询并将其发送到由因特网地址标识的服务器,并从服务器接收到包含与该内容相关联的元数据的对查询的响应。
    • 7. 发明授权
    • Stego key management
    • Stego密钥管理
    • US09485089B2
    • 2016-11-01
    • US13923147
    • 2013-06-20
    • Verance Corporation
    • Rade Petrovic
    • H04L9/08G09C5/00
    • H04L9/0819G09C5/00H04L2209/608
    • Systems, methods, devices and computer program products are provided that improve stego key management of watermarking systems and reduce the impact of leaked secrets related to watermark embedding and extraction operations. In the event that a watermark extractor is compromised and its extraction stego key is revealed, new extraction stego key sets are generated and assigned to a particular group of devices with similar security features. The new extraction stego key sets have significant overlap with one another, and can be retired once a device within the particular group of devices is compromised. The described techniques are complementary to other security enhancement practices, such as obfuscation and tamper resistant techniques, to strengthen the security of a watermarking system.
    • 提供了系统,方法,设备和计算机程序产品,提高了水印系统的隐私密钥管理,减少了与水印嵌入和提取操作相关的泄漏秘密的影响。 在水印提取器被泄露并且其提取隐藏密钥被泄露的情况下,生成新的提取隐藏密钥集并将其分配给具有相似安全特征的特定的一组设备。 新的提取隐藏密钥集彼此具有显着的重叠,并且一旦特定的设备组中的设备受到损害就可以退出。 所描述的技术与其他安全性增强实践(诸如混淆和防篡改技术)互补,以加强水印系统的安全性。
    • 9. 发明申请
    • STEGO KEY MANAGEMENT
    • STEGO关键管理
    • US20140376723A1
    • 2014-12-25
    • US13923147
    • 2013-06-20
    • Verance Corporation
    • Rade Petrovic
    • H04L9/08
    • H04L9/0819G09C5/00H04L2209/608
    • Systems, methods, devices and computer program products are provided that improve stego key management of watermarking systems and reduce the impact of leaked secrets related to watermark embedding and extraction operations. In the event that a watermark extractor is compromised and its extraction stego key is revealed, new extraction stego key sets are generated and assigned to a particular group of devices with similar security features. The new extraction stego key sets have significant overlap with one another, and can be retired once a device within the particular group of devices is compromised. The described techniques are complementary to other security enhancement practices, such as obfuscation and tamper resistant techniques, to strengthen the security of a watermarking system.
    • 提供了系统,方法,设备和计算机程序产品,提高了水印系统的隐私密钥管理,减少了与水印嵌入和提取操作相关的泄漏秘密的影响。 在水印提取器被泄露并且其提取隐藏密钥被泄露的情况下,生成新的提取隐藏密钥集并将其分配给具有相似安全特征的特定的一组设备。 新的提取隐藏密钥集彼此具有显着的重叠,并且一旦特定的设备组中的设备受到损害就可以退出。 所描述的技术与其他安全性增强实践(诸如混淆和防篡改技术)互补,以加强水印系统的安全性。