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    • 11. 发明申请
    • ENCODING AND DETECTING APPARATUS
    • 编码和检测装置
    • WO2007141468A1
    • 2007-12-13
    • PCT/GB2007/001605
    • 2007-05-03
    • SONY UNITED KINGDOM LIMITEDKEATING, Stephen, MarkMCLEAN, IanRUSSELL, Mark, JulianHOOPER, Daniel, LukeTAPSON, Daniel, Luke
    • KEATING, Stephen, MarkMCLEAN, IanRUSSELL, Mark, JulianHOOPER, Daniel, LukeTAPSON, Daniel, Luke
    • G06T1/00
    • G06T1/0071G06T1/0085
    • An encoding data processing apparatus generates a marked copy of a video material item by representing a payload data word as a code word and embedding the code word into a copy of the video material item. The apparatus comprises a code word generator including a pre-processor and an encryption processor. The preprocessor is operable to divide the payload word into a plurality of parts, to form a plurality of initial values from the plurality of parts, each of the initial values being formed by adding parts of the payload data word to each initial value successively starting with the first part added to the first initial value, and adding the first and second to the second initial value so that each subsequent initial value includes all the parts of the payload data word of those of the previous initial values in addition to a new part of the payload data word. The encryption processor is operable to receive each of the initial values and to generate an encrypted data stream from each of the initial values using a payload encryption key. A combiner is operable to combine the encrypted payload data word with the video material item. The encrypted data streams are thereby provided with improved orthogonality, which can assist in the detection of each of the encrypted data streams by correlation. Furthermore, the likelihood of an attacker being able to discover, alter or destroy the payload data word in the material item is reduced.
    • 编码数据处理装置通过将有效载荷数据字表示为代码字并将代码字嵌入到视频材料项目的副本中,生成视频材料项目的标记副本。 该装置包括一个代码字生成器,它包括一个预处理器和一个加密处理器。 预处理器可操作以将有效载荷字划分成多个部分,以从多个部分形成多个初始值,每个初始值通过将有效载荷数据字的部分加到每个初始值上而形成,每个初始值从 第一部分添加到第一初始值,并且将第一和第二添加到第二初始值,使得除了新的部分之外,每个后续初始值包括有效载荷数据字的所有部分 有效载荷数据字。 加密处理器可操作以接收每个初始值并且使用有效载荷加密密钥从每个初始值生成加密的数据流。 组合器可操作以将加密的有效载荷数据字与视频材料项组合。 因此,加密的数据流具有改进的正交性,其可以通过相关性来帮助检测每个加密的数据流。 此外,减少攻击者能够发现,改变或破坏物料项目中的有效载荷数据字的可能性。
    • 12. 发明申请
    • VIDEO PROCESSING
    • 视频处理
    • WO2007051978A2
    • 2007-05-10
    • PCT/GB2006/004001
    • 2006-10-27
    • SONY UNITED KINGDOM LIMITEDLIVING, Jonathan
    • LIVING, Jonathan
    • H04N7/01
    • H04N7/012H04N5/145H04N7/014H04N19/52H04N19/527
    • Video processing apparatus in which at least a subset of output pixels of an output image are generated from one or more input images using motion vectors having a sub-pixel accuracy comprises a band filter for deriving a lower spatial frequency portion and a higher frequency portion from the one or more input images; means for deriving a lower frequency contribution relating to a pixel position nearest to a required output pixel position from the lower spatial frequency portion of the one or more input images using a respective motion vector; means for deriving a higher frequency contribution from the higher spatial frequency portion of the one or more input images using the respective motion vector; a spatial filter for generating, from one or more of the higher frequency contributions, a higher frequency pixel value at the required pixel position; and a combiner for combining the lower frequency contribution and the higher frequency pixel value to generate an output pixel value relating to the required pixel position.
    • 视频处理装置,其中使用具有子像素精度的运动矢量从一个或多个输入图像生成输出图像的输出像素的至少一个子集包括用于导出较低空间频率部分和较高频率部分的频带滤波器 一个或多个输入图像; 用于使用相应的运动矢量从所述一个或多个输入图像的较低空间频率部分中导出与最接近所需输出像素位置的像素位置相关的较低频率贡献的装置; 用于使用各自的运动矢量从所述一个或多个输入图像的较高空间频率部分导出更高频率贡献的装置; 空间滤波器,用于从所述较高频率贡献中的一个或多个产生所需像素位置处的较高频率像素值; 以及组合器,用于组合较低频率贡献和较高频率像素值,以产生与所需像素位置相关的输出像素值。
    • 13. 发明申请
    • CHARGE PUMP CIRCUIT
    • 充电泵电路
    • WO2007029022A1
    • 2007-03-15
    • PCT/GB2006/003347
    • 2006-09-08
    • SONY UNITED KINGDOM LIMITEDGAUSSEN, Peter, William
    • GAUSSEN, Peter, William
    • H03L7/089H03L7/197
    • H03L7/0895H03L7/1974
    • A charge pump circuit including an input (30), an output (38), a voltage rail (36), a control line (42), an MOS input transistor (34), the input transistor having a channel and a gate, which channel being connected between the input and the voltage rail, and an MOS output transistor (32), the output transistor having a channel and a gate, which channel being connected between the output and the voltage rail which gate is connected to the gate of the output transistor. A switch (40) connects the channel of the output transistor (32) to the voltage rail (36) in response to a signal on the control line (42). The channel of an input cascode transistor (48) connects the channel of the input transistor (34) to the input (30). The channel of an output cascode transistor (46) connects the channel of the output transistor (32) to the output (38).
    • 一种电荷泵电路,包括输入(30),输出(38),电压轨(36),控制线(42),MOS输入晶体管(34),输入晶体管具有沟道和栅极, 通道连接在输入和电压轨道之间,以及MOS输出晶体管(32),输出晶体管具有沟道和栅极,该沟道连接在输出和电压轨之间,栅极连接到栅极 输出晶体管。 开关(40)响应于控制线(42)上的信号将输出晶体管(32)的通道连接到电压轨(36)。 输入共源共栅晶体管(48)的通道将输入晶体管(34)的沟道连接到输入(30)。 输出共源共栅晶体管(46)的通道将输出晶体管(32)的沟道连接到输出(38)。
    • 17. 发明申请
    • ANALOGUE TO DIGITAL CONVERSION
    • 模拟数字转换
    • WO2006109013A1
    • 2006-10-19
    • PCT/GB2006/001019
    • 2006-03-21
    • SONY UNITED KINGDOM LIMITEDEASTTY, Peter, CharlesTEMBE, Nicholas, George
    • EASTTY, Peter, CharlesTEMBE, Nicholas, George
    • H03M1/18
    • H03M1/187H03M1/188
    • An analogue-to-digital conversion arrangement for converting an input analogue signal into an output digital representation comprises two or more analogue-to-digital conversion paths each applying a conversion mapping between input analogue signal magnitudes and respective digital values to generate an intermediate representation of the input analogue signal, the conversion paths being operable to apply different respective conversion mappings; and an output circuit operable to combine the intermediate - representations from at least two conversion paths to generate the output digital representation, the intermediate representations being combined according to a weighting dependent on the magnitude of the input analogue signal. At least one of the conversion paths has an enhanced sensitivity mode appropriate to a range of magnitudes of the input signal which are below a threshold magnitude; and the arrangement comprises control logic for inhibiting operation in the enhanced sensitivity mode if the magnitude of the input analogue signal exceeds the threshold magnitude.
    • 用于将输入模拟信号转换为输出数字表示的模数转换装置包括两个或更多个模数转换路径,每个转换路径在输入模拟信号幅度和相应的数字值之间应用转换映射,以产生 所述输入模拟信号,所述转换路径可操作以应用不同的相应转换映射; 以及输出电路,其可操作以组合来自至少两个转换路径的中间表示以产生输出数字表示,所述中间表示根据取决于输入模拟信号的幅度的加权来组合。 至少一个转换路径具有适合于低于阈值幅度的输入信号的幅度范围的增强灵敏度模式; 并且如果输入模拟信号的幅度超过阈值幅度,则该装置包括用于禁止增强灵敏度模式下的操作的控制逻辑。
    • 18. 发明申请
    • DATA PROCESSING APPARATUS AND METHOD
    • 数据处理装置和方法
    • WO2006061597A1
    • 2006-06-15
    • PCT/GB2005/004677
    • 2005-12-06
    • SONY UNITED KINGDOM LIMITEDTAPSON, Daniel, WarrenHOOPER, Daniel, Luke
    • TAPSON, Daniel, WarrenHOOPER, Daniel, Luke
    • G06T1/00
    • G06T1/005G06T2201/0051G06T2201/0061G06T2201/0065G06T2201/0083
    • A data processing apparatus registers an image which has been encoded with a two-dimensional water mark pattern. The water mark comprises for each frame of the image a water mark frame pattern of water mark blocks, the water mark pattern comprising a plurality of regions. Each region of the pattern includes one water mark block selected from a predetermined set of possible water mark blocks in accordance with a key sequence. The key sequence provides a predetermined sequence of selected water mark blocks to form the water mark pattern of each frame to provide a predetermined sequence of water marked frames. The data processing apparatus comprises a block match processor operable to generate block match probabilities comprising for each region of a current frame of the water marked image a probability surface of possible distortion vectors for each possible water mark block of the set of possible water marked blocks which may have been added to that region of the image frame. A water mark block prior probability calculator operable to form block prior probabilities, a distortion probability calculator operable to form a spatial prior probability surface for each region of the current image frame from the block prior probabilities and the block match probabilities, providing a probability distribution of distortion vectors for the region, and a mark of distortion processor operable to form an estimate of a distortion vector for each region from the adapted spatial prior probabilities. Accordingly, distortion in a water marked image can be detected and then removed with out a need to refer to an original copy of the image.
    • 数据处理装置对已经用二维水印图案编码的图像进行登记。 水印包括图像的每个帧的水印块的水印框图案,水印图案包括多个区域。 图案的每个区域包括根据键序列从预定的一组可能的水印块中选择的一个水印块。 密钥序列提供所选择的水印块的预定序列以形成每个帧的水印图案,以提供预定的水标记序列。 数据处理装置包括块匹配处理器,其可操作以产生块匹配概率,其包括针对水印图像的当前帧的每个区域的可能的水标记块集合中的每个可能的水印块的可能失真向量的概率表面, 可能已经被添加到图像帧的该区域。 水印块先验概率计算器可操作以形成块先验概率,失真概率计算器可操作以从块先验概率和块匹配概率形成当前图像帧的每个区域的空间先验概率表面,提供块概率分布 用于该区域的失真向量,以及可用于从适应的空间先验概率形成每个区域的失真向量的估计的失真处理器的标记。 因此,可以检测水印图像中的变形,然后除去需要参考图像的原始副本的方式去除。
    • 19. 发明申请
    • VIDEO/AUDIO NETWORK
    • 视频/音频网络
    • WO2004064321A1
    • 2004-07-29
    • PCT/GB2004/000141
    • 2004-01-16
    • SONY UNITED KINGDOM LIMITEDCHEN, Jian-RongWILSON, DanielECONOMOU, Daphne
    • CHEN, Jian-RongWILSON, DanielECONOMOU, Daphne
    • H04L12/18
    • H04L7/02H04L12/18H04L12/185H04L29/06027H04L45/10H04L45/16H04L49/201H04L49/351H04L49/352H04L49/602H04L65/4076H04N21/43632H04N21/6405
    • A packet-based data network comprises: a packet-based network switch; a plurality of packetised data sources coupled to the network, the packetised data comprising at least one of audio data or vide data; at least one destination, being a data handling device for handling data from the packetised data sources, coupled to the network; and a network control arrangement coupled to the network, the network control arrangement being arranged to provide virtual circuit-switched connections for transfer of packetised data from sources to destinations via the network switch by: a) assigning multicast group identifiers to the sources, so that the sources launch packetised data onto the network as multicast data packets identified by the multicast group identifiers; and b) instructing a destination to issue a request to the network switch to join the multicast group of a source so as to receive data packets from that source.
    • 基于分组的数据网络包括:基于分组的网络交换机; 耦合到所述网络的多个打包数据源,所述打包数据包括音频数据或视频数据中的至少一个; 至少一个目的地,是用于处理耦合到所述网络的来自所述打包数据源的数据的数据处理装置; 以及耦合到所述网络的网络控制装置,所述网络控制装置被布置成通过以下方式提供虚拟电路交换连接,用于经由所述网络交换机从源传送到目的地的分组数据:a)向所述源分配多播组标识符,使得 源将分组数据发送到网络,作为由多播组标识符标识的多播数据分组; 以及b)指示目的地向网络交换机发出请求以加入源的多播组,以便从该源接收数据分组。