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公开(公告)号:US06650762B2
公开(公告)日:2003-11-18
申请号:US10143959
申请日:2002-05-14
IPC分类号: G06K900
CPC分类号: H04L1/0006 , H04L1/0007
摘要: A new approach to data embedding within ITU G.722 and ITU G.711 based upon the method of types and universal classification is disclosed. A secondary data sequence is embedded in the original (host) data stream using the method of types. The embedded data is extracted using a type-based universal receiver, with or without the use of a key. The choice of type and rate for the embedded data is based upon an analysis of portions of the original ITU G.722 or ITU G.711 coded data stream. The universal receiver learns the type from the received data alone, and hence, there is no side information required as in previous data embedding techniques. The embedding process and the receiver may both be data adaptive, so the original data stream can be reconstructed at the decoder without error.
摘要翻译: 公开了基于类型和通用分类方法的ITU G.722和ITU G.711中数据嵌入的新方法。 次要数据序列使用类型的方法嵌入在原始(主机)数据流中。 使用基于类型的通用接收器提取嵌入数据,使用或不使用键。 嵌入式数据的类型和速率的选择基于原始ITU G.722或ITU G.711编码数据流的部分分析。 通用接收机仅从接收到的数据中学习类型,因此,不像以前的数据嵌入技术那样需要辅助信息。 嵌入过程和接收器都可以是数据自适应的,因此可以在解码器处重建原始数据流而没有错误。