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公开(公告)号：EP0778705A3
公开(公告)日：1997-07-16
申请号：EP96118521.2
申请日：1993-07-20
发明人： Katta, Noboru , Murakami, Hiroki , Ibaraki, Susumu , Nakamura, Seiji , Akiyama, Toshihide , Takeno, Hiroshi
IPC分类号： H04N7/167
CPC分类号： H04N7/1675 , H04N19/13 , H04N19/60 , H04N19/91
摘要： A scramble apparatus for scrambling data including a variable length code and a descramble apparatus for descrambling a scrambled signal, and a scramble transmission apparatus comprising the scramble apparatus and the descramble apparatus. A specific code of data is converted into a readable code having a length equal to that of an original code.
摘要翻译： 一种用于加扰数据的加密装置，该装置包括一个可变长度码和一个用于对加密信号进行解扰的解扰装置，以及一个包括该加扰装置和解扰装置的加密传输装置。 数据的特定代码被转换成长度等于原始代码长度的可读代码。
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公开(公告)号：EP0577418A3
公开(公告)日：1994-09-28
申请号：EP93305146.8
申请日：1993-06-30
IPC分类号： H04N7/137
CPC分类号： H04N19/577 , H04N19/107 , H04N19/503 , H04N19/61
摘要： For mode selection in motion compensated coding of digital video signals, reference is mode to the original pictures instead of decompressed pictures. Minimum errors produced during motion estimation, corresponding to optimum motion vectors, are used for mode selection. A motion detector detects a optimum motion vector of a current block, for each possible reference picture in the past and future, and outputs the optimum motion vectors and corresponding minimum errors. In a mode selector, an activity of the current block is estimated, an interpolated prediction obtained by averaging predictions from the past and future is evaluated, and an optimum mode is determined which gives a smallest value among all the minimum errors, the activity of the current block and the evaluation of the interpolated prediction.
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公开(公告)号：EP0607988A1
公开(公告)日：1994-07-27
申请号：EP94100869.0
申请日：1994-01-21
IPC分类号： G06F15/78
CPC分类号： G06F15/8092
摘要： A program controlled processor comprises a scalar processing unit 101 for normal data (= scalar) operations and branch processing, a plurality of vector processing units 102 of identical structure, a vector distributor 103 for distributing input data as block vectors to vector memory 304 in each vector processing unit 102, a vector coupler 104 for coupling the block vectors stored in vector memory 404 in each vector processing unit 102 to provide output vectors, an instruction memory 105 for storing the operations of these circuit blocks as an operating program, a sequencer 106 for sequentially reading the instruction memory 105, and a decoder 107 for interpreting the read instructions and outputting a control signal to each circuit block. The scalar processing unit 101 comprises a scalar bus input enabling the scalar processing unit 101 to refer scalar registers in the vector processing units 102. The program controlled processor has improved data processing performance because parallel vector instructions are operated in parallel in the vector processing units of block data distributed by the vector distributor.
摘要翻译： 程序控制处理器包括用于正常数据（=标量）操作和分支处理的标量处理单元101，具有相同结构的多个矢量处理单元102，用于将输入数据作为块向量分配给每个矢量存储器304的矢量分配器103 矢量处理单元102，用于将存储在矢量存储器404中的块向量耦合到每个矢量处理单元102中以提供输出矢量的矢量耦合器104，用于存储作为操作程序的这些电路块的操作的指令存储器105，定序器106 用于顺序读取指令存储器105，以及解码器107，用于解读读取指令并向每个电路块输出控制信号。 标量处理单元101包括标量总线输入，使得标量处理单元101能够引用向量处理单元102中的标量寄存器。程序控制处理器具有改进的数据处理性能，因为并行向量指令在矢量处理单元中并行操作 由矢量分配器分发的块数据。
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公开(公告)号：EP0405842A3
公开(公告)日：1993-03-03
申请号：EP90306804.7
申请日：1990-06-21
IPC分类号： H04N7/13
CPC分类号： H04N5/145 , G06T7/223 , G06T2207/10016 , H04N19/527 , H04N19/61
摘要： Motion vectors are determined in each frame of the input image data, and optimum motion vectors characterizing the motion are extracted from the determined motion vectors, a three-dimensional block is composed in space and in time along the extracted optimum motion vectors, and the composed three-dimensional block is block-coded by orthogonal transform or the like, according to the disclosed picture coding method.
摘要翻译： 在输入图像数据的每个帧中确定运动矢量，并且从所确定的运动矢量中提取表征运动的最佳运动矢量，沿着所提取的最佳运动矢量在空间和时间上组合三维块，并且组合 根据所公开的图像编码方法，通过正交变换等对三维块进行块编码。
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公开(公告)号：EP0412713A2
公开(公告)日：1991-02-13
申请号：EP90308453.1
申请日：1990-07-31
IPC分类号： H04N7/30
CPC分类号： H04N19/649 , H04N19/112 , H04N19/124 , H04N19/126 , H04N19/132 , H04N19/137 , H04N19/14 , H04N19/146 , H04N19/149 , H04N19/15 , H04N19/176 , H04N19/18 , H04N19/60 , H04N19/62
摘要： A picture coding method is provided comprising the steps of translating the data of an image into 3-dimensional blocks and detecting their movements, in which the transform coefficients of high degree in the space associated with the 3-dimensional blocks where more movement is involved are removed for reducing spatial resolution while maintaining time resolution and also, the transform coefficients of high degree in the time associated with the 3-dimensional blocks where less movement is involved are removed for reducing tine resolution while maintaining spatial resolution, so that the effective compression of the data can be implemented without a great visual degradation in the picture quality.
摘要翻译： 提供了一种图像编码方法，包括以下步骤：将图像的数据转换为三维块并检测其移动，其中与涉及更多移动的3维块相关联的空间中的高度变换系数为 去除以减少空间分辨率同时保持时间分辨率，并且除去与涉及较少移动的3维块相关联的时间中的高度变换系数，以便在保持空间分辨率的同时降低叉分辨率，从而有效压缩 数据可以在图像质量没有很大的视觉下降的情况下实现。
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公开(公告)号：EP0300775A3
公开(公告)日：1991-01-16
申请号：EP88306679.7
申请日：1988-07-20
IPC分类号： H04N7/32
CPC分类号： H04N19/10
摘要： A method of encoding and decoding image and/or audio signals includes an encoding step comprising previously preparing a quantization table which has pairs of a sampling interval and a quantized difference value, calculating a difference value between a given initial value and a sampling point succeeding to the initial value, comparing the calculated difference value with the quantization table, and searching the most matching quantization level. The search is started from the sampling point immediately succeeding to the initial value and then stopped upon finding of the matching quantization level. The index of that matching quantization level is transmitted. The decoding step comprises preparing the same quantization table as used in the encoding step, determining the sampling interval and the quantized difference value based on the index received, and adding the quantized difference value to the initial value to obtain a decoded value. In case there are present two or more sampling intervals, the corresponding samples are interporated. As a result, the sampling interval is prolonged in the flat parts of signal and shortened in the steeply changing parts, thereby providing compression fit for human visual and auditory characteristics.
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