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    • 1. 发明申请
    • METHOD AND APPARATUS FOR ENCODING OR DECODING A BITSTREAM
    • 用于编码或解码比特流的方法和设备
    • WO2005052935A3
    • 2005-08-11
    • PCT/IB2004052510
    • 2004-11-23
    • KONINKL PHILIPS ELECTRONICS NVVAN LEEST ADRIAAN JVAN DER VEEN MINNEBRUEKERS ALPHONS A M L
    • VAN LEEST ADRIAAN JVAN DER VEEN MINNEBRUEKERS ALPHONS A M L
    • G06T1/00H04N7/26H04N7/30
    • H04N19/59H04N19/13H04N19/132H04N19/14H04N19/176H04N19/18H04N19/40H04N19/467H04N19/48H04N19/93
    • The invention relates to a system for re-encoding bitstreams for content signals. A re-encoder (101) receives a bitstream comprising e.g. an MPEG-2 encoded signal. The receiver (109) feeds the bitstream to an extraction processor (111) which extracts non-essential information from the bitstream thereby generating a reduced bitstream which is still MPEG-2 compliant. The non-essential information, which specifically may be higher frequency transform coefficients, is re-encoded in a re-encode processor (113) using a non-MPEG-2 encoding principle. The encoding may be optimised for the characteristics of the non-essential information resulting in a more efficient encoding. The re-encoded data is inserted in user data section of the reduced bit stream by a combine processor (115). Thus, an effective reduction in the size of the bitstream may be achieved. A decoder (107) may extract the re-encoded data from the user data section, regenerate the original non-essential information and insert this in the reduced bitstream. Specifically, the original bitstream may be regenerated. The approach may specifically be used for reversible bitstream watermarking that which does not increase the size of the bitstream.
    • 本发明涉及一种用于对内容信号的比特流进行重新编码的系统。 重新编码器(101)接收包括例如比特流的比特流。 一个MPEG-2编码信号。 接收器(109)将比特流馈送到提取处理器(111),提取处理器(111)从比特流中提取非必要信息,从而生成仍然符合MPEG-2的缩减比特流。 使用非MPEG-2编码原理,在重编码处理器(113)中重新编码具体可以是较高频率变换系数的非重要信息。 编码可针对非必要信息的特性进行优化,从而导致更有效的编码。 通过组合处理器(115)将重新编码的数据插入到缩小比特流的用户数据部分中。 因此,可以实现比特流尺寸的有效减小。 解码器(107)可以从用户数据部分提取重新编码的数据,重新生成原始非必要信息并将其插入到缩小比特流中。 具体来说,可以重新生成原始比特流。 该方法可以专门用于不增加比特流大小的可逆比特流水印。
    • 2. 发明申请
    • WATERMARKING OF AN IMAGE MOTION SIGNAL
    • 图像运动信号的水印
    • WO2006109270A3
    • 2007-03-15
    • PCT/IB2006051151
    • 2006-04-13
    • KONINKL PHILIPS ELECTRONICS NVVAN LEEST ADRIAAN JBRUEKERS ALPHONS A M L
    • VAN LEEST ADRIAAN JBRUEKERS ALPHONS A M L
    • G06T1/00
    • G06T1/0085
    • The present invention relates to a method for embedding a watermark (w) in an image motion signal (55). The invention describes a method for embedding a watermark (w) in a motion image signal (55) in the optical domain in several steps. Initially, the watermark, i.e. the information for embedding, is represented by a sequence of watermark samples. During embedding sharpness changing means (10) are applied to change the sharpness in response to the watermark samples, and thereby embedding the watermark in the motion image signal (55) in a simple and efficient manner in the optical domain. The sharpness changing can be implemented by various ways, e.g. by displacing a lens (10) slightly. A particular embodiment exploits a variable focus lens having a liquid lens operated by electro-wetting. Further, the present invention relates to a corresponding apparatus for embedding the watermark.
    • 本发明涉及一种在水印(w)中嵌入图像运动信号(55)中的方法。 本发明描述了一种用于在光域中的运动图像信号(55)中以几个步骤嵌入水印(w)的方法。 最初,水印,即用于嵌入的信息,由水印样本序列表示。 在嵌入期间,应用锐度改变装置(10)来响应于水印样本改变锐度,从而以光学域中简单有效的方式将水印嵌入运动图像信号(55)。 锐度改变可以通过各种方式来实现,例如 通过稍微移动透镜(10)。 具体实施例利用具有通过电润湿操作的液体透镜的可变焦距透镜。 此外,本发明涉及用于嵌入水印的相应装置。
    • 3. 发明申请
    • ACTIVE SOUND REDUCTION SYSTEM AND METHOD
    • 主动减音系统及方法
    • WO2011015979A3
    • 2011-12-01
    • PCT/IB2010053472
    • 2010-07-30
    • KONINKL PHILIPS ELECTRONICS NVBOOIJ PAUL SVAN LEEST ADRIAAN JAARTS RONALDUS M
    • BOOIJ PAUL SVAN LEEST ADRIAAN JAARTS RONALDUS M
    • G10K11/178
    • G10K11/1788G10K11/178
    • The present invention refers to an active sound reduction system and method for attenuation of sound emitted by a primary sound source, especially for attenuation of snoring sounds emitted by a human being. This system comprises a primary sound source, at least one speaker as a secondary sound source for producing an attenuating sound to be superposed with the sound emitted by said primary sound source, a reference microphone for receiving sound from said primary sound source, and at least one error microphone being allocated to each speaker to form a speaker/microphone pair. The at least one error microphone is provided as a directional microphone pointing at its allocated speaker to receive residual sound resulting from the superposition of the sounds from the primary sound source and the corresponding speaker. The error microphone and speaker of at least one speaker/microphone pair and the primary sound source are arranged substantially collinear. A control unit is provided to receive an output reference signal of the reference microphone representing the sound received by the reference microphone and an output error signal of the at least one error microphone representing the sound received by the at least one error microphone and to calculate a control signal for the speaker from the output reference signal and the output error signal.
    • 本发明涉及一种用于衰减由主声源发出的声音的主动减声系统和方法,特别是用于衰减由人发射的打鼾音。 该系统包括主声源,至少一个扬声器作为次声源,用于产生与所述主声源发射的声音叠加的衰减声音,用于从所述主声源接收声音的参考麦克风,并且至少 一个错误麦克风被分配给每个扬声器以形成扬声器/麦克风对。 提供至少一个误差麦克风作为指向其分配的扬声器的定向麦克风,以接收由来自主声源和相应扬声器的声音叠加而产生的残留声音。 至少一个扬声器/麦克风对和主声源的误差麦克风和扬声器基本上共线布置。 提供控制单元以接收表示由参考麦克风接收的声音的参考麦克风的输出参考信号,以及表示由至少一个误差麦克风接收的声音的至少一个误差麦克风的输出误差信号,并计算一个 来自输出参考信号的扬声器的控制信号和输出误差信号。
    • 6. 发明申请
    • BLIND DETECTION FOR DIGITAL CINEMA
    • 数字电影的盲点检测
    • WO2007072442A3
    • 2007-11-01
    • PCT/IB2006054973
    • 2006-12-20
    • KONINKL PHILIPS ELECTRONICS NVVAN LEEST ADRIAAN J
    • VAN LEEST ADRIAAN J
    • G06T1/00
    • G06T1/0071G06T1/0085G06T2201/0083
    • The invention relates to embedding in, as well as to extracting a payload from a motion image signal. Furthermore, the invention relates to a motion image signal. A payload is embedded in the motion image signal by the following steps. A first and an at least second watermark are represented by at least a first sequence of watermark samples, and a first and at least a second global property of an image of the signal are determined. Subsequently, the first and the at least second watermark are embedded in the signal, so that a shift of the at least second watermark with respect to the first watermark represents the payload. The first and the at least second watermarks are embedded by modifying the first and the at least second global property in the image in accordance with the corresponding watermark samples. The first and second global properties may be the mean luminance and the mean color saturation of the pixels constituting the image.
    • 本发明涉及嵌入以及从运动图像信号中提取有效载荷。 此外,本发明涉及一种运动图像信号。 通过以下步骤将有效载荷嵌入运动图像信号中。 第一和至少第二水印由至少第一序列的水印样本表示,并且确定信号的图像的第一和至少第二全局属性。 随后,将第一和至少第二水印嵌入信号中,使得至少第二水印相对于第一水印的移位表示有效载荷。 根据相应的水印样本,通过修改图像中的第一和至少第二全局属性来嵌入第一和至少第二水印。 第一和第二全局属性可以是构成图像的像素的平均亮度和平均色彩饱和度。
    • 7. 发明申请
    • A METHOD FOR EMBEDDING DATA
    • 一种嵌入数据的方法
    • WO2007007270A3
    • 2007-03-29
    • PCT/IB2006052320
    • 2006-07-10
    • KONINKL PHILIPS ELECTRONICS NVVAN LEEST ADRIAAN J
    • VAN LEEST ADRIAAN J
    • G06T1/00
    • G06T1/0035G06T2201/0052G06T2201/0053H04N19/102H04N19/152H04N19/174H04N19/176H04N19/184H04N19/467H04N19/60H04N21/8358
    • Watermarking schemes are known that embed the watermark directly in the MPEG domain. A requirement for these algorithms is that the watermarked MPEG stream does not increase in size. Therefore, a bit rate controller allows a modification of a DCT coefficient only if such modification does not increase the stream size. It happens frequently that DCT coefficients are skipped because of this requirement. As a direct consequence, the watermark energy is smaller than desired and therefore the watermark is less robust. This invention exploits the fact that stuffing bits have often already been added to the stream by the MPEG encoder. The embedder is arranged to analyse the stream so as to find out how many stuffing bits there are at the end of the slice. The embedder can then embed the watermark immediately at the beginning of a slice. As a direct result, the watermark energy will increase and therefore the watermark will be more robust.
    • 已知水印方案是将水印直接嵌入到MPEG域中。 这些算法的要求是水印的MPEG流的大小不增加。 因此,仅当这种修改不增加流大小时,比特率控制器允许修改DCT系数。 由于这个要求,DCT系数被频繁地跳过。 作为直接结果,水印能量小于期望值,因此水印的鲁棒性较差。 本发明利用了MPEG编码器经常已将填充比特添加到流中的事实。 嵌入器被布置成分析流,以便找出在切片末端有多少填充位。 然后,嵌入器可以立即将水印嵌入切片的开头。 作为直接结果,水印能量将增加,因此水印将更加鲁棒。
    • 10. 发明专利
    • DE602005008427D1
    • 2008-09-04
    • DE602005008427
    • 2005-05-04
    • KONINKL PHILIPS ELECTRONICS NV
    • VAN LEEST ADRIAAN JLANGELAAR GERRIT C
    • G06T1/00
    • There is described a method of determining a measure of scale factor (MSF) by detecting a watermark included in a sequence ( 10 ) of images ( 20 ). The watermark is included in several mutually changed forms in the sequence ( 10 ). In a first step, the method involves receiving the sequence ( 10 ) of images ( 20 ). In a second step, the images ( 2 ) are sorted substantially into a plurality of corresponding groups depending upon one or more relative changes applied to their included watermarks. In a third step, the method involves accumulating for each group at least a portion of one or more images thereof into corresponding buffers. In a fourth step, the method involves mutually analyzing contents of the buffers ( 130, 180 ) to determine one or more changes applied to the watermark included in the sequence ( 10 ). In a fifth step, information concerning the one or more changes is processed in relation to an expected scale factor to determine said measure of scale factor (MSF).