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    • 2. 发明授权
    • Types-based, lossy data embedding
    • 基于类型,有损数据嵌入
    • US06650762B2
    • 2003-11-18
    • US10143959
    • 2002-05-14
    • Jerry Don GibsonMark Gavin KokesGeoffrey Charles OrsakVictor James Stolpman
    • Jerry Don GibsonMark Gavin KokesGeoffrey Charles OrsakVictor James Stolpman
    • G06K900
    • H04L1/0006H04L1/0007
    • 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.
    • 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。
    • 3. 发明授权
    • Multimedia stream combining
    • 多媒体流组合
    • US08374254B2
    • 2013-02-12
    • US12334978
    • 2008-12-15
    • William O. Camp, Jr.Mark Gavin KokesMaurice LabicheYojak Harshad Vasa
    • William O. Camp, Jr.Mark Gavin KokesMaurice LabicheYojak Harshad Vasa
    • H04N7/12
    • H04L65/4015H04L65/604H04L65/607H04L65/80H04L69/14H04N19/36H04N19/37H04N19/67
    • Two or more video streams including a high quality video stream and a low quality video stream are simultaneously transmitted to the video receiving device over the wireless network. All of the video streams carry the same video content but with different video quality. The high quality video stream is encoded using an unequal error protection code so that first components (e.g., high frequency components) receive a higher level of error protection than second components (e.g., low frequency components). The video receiving device can select the high quality video stream when channel conditions are favorable. When channel conditions are not good enough to support the high quality video stream, the video receiving device determines whether the first components of the high quality video stream with the greater error protection are usable. If so, the video receiving device combines the first components of the high quality video stream with the low quality video stream. Otherwise, the video receiving device outputs the low quality video stream.
    • 包括高质量视频流和低质量视频流的两个或多个视频流通过无线网络被同时发送到视频接收设备。 所有视频流携带相同的视频内容,但具有不同的视频质量。 使用不相等的错误保护码对高质量视频流进行编码,使得第一分量(例如,高频分量)比第二分量(例如,低频分量)接收更高水平的误差保护。 当信道条件有利时,视频接收装置可以选择高质量的视频流。 当信道条件不足以支持高质量视频流时,视频接收设备确定具有较大错误保护的高质量视频流的第一个组件是否可用。 如果是这样,则视频接收装置将高质量视频流的第一分量与低质量视频流相结合。 否则,视频接收装置输出低质量视频流。
    • 4. 发明申请
    • Multimedia Stream Combining
    • 多媒体流组合
    • US20100150252A1
    • 2010-06-17
    • US12334978
    • 2008-12-15
    • William O. Camp, JR.Mark Gavin KokesMaurice J. LabicheYojak Harshad Vasa
    • William O. Camp, JR.Mark Gavin KokesMaurice J. LabicheYojak Harshad Vasa
    • H04N7/66
    • H04L65/4015H04L65/604H04L65/607H04L65/80H04L69/14H04N19/36H04N19/37H04N19/67
    • Two or more video streams including a high quality video stream and a low quality video stream are simultaneously transmitted to the video receiving device over the wireless network. All of the video streams carry the same video content but with different video quality. The high quality video stream is encoded using an unequal error protection code so that first components (e.g., high frequency components) receive a higher level of error protection than second components (e.g., low frequency components). The video receiving device can select the high quality video stream when channel conditions are favorable. When channel conditions are not good enough to support the high quality video stream, the video receiving device determines whether the first components of the high quality video stream with the greater error protection are usable. If so, the video receiving device combines the first components of the high quality video stream with the low quality video stream. Otherwise, the video receiving device outputs the low quality video stream.
    • 包括高质量视频流和低质量视频流的两个或多个视频流通过无线网络被同时发送到视频接收设备。 所有视频流携带相同的视频内容,但具有不同的视频质量。 使用不相等的错误保护码对高质量视频流进行编码,使得第一分量(例如,高频分量)比第二分量(例如,低频分量)接收更高水平的误差保护。 当信道条件有利时,视频接收装置可以选择高质量的视频流。 当信道条件不足以支持高质量视频流时,视频接收设备确定具有较大错误保护的高质量视频流的第一个组件是否可用。 如果是这样,则视频接收装置将高质量视频流的第一分量与低质量视频流相结合。 否则,视频接收装置输出低质量视频流。