专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5355378A Predictive coding device capable of coding image data signals without a discontinuity among blocks 失效
标题翻译：能够在块之间不间断地对图像数据信号进行编码的预测编码装置
公开(公告)号：US5355378A
公开(公告)日：1994-10-11
申请号：US829770
申请日：1992-01-31
申请人： Mutsumi Ohta
发明人： Mutsumi Ohta
IPC分类号： H03M7/30 , G06T9/00 , H04N11/04 , H04N19/103 , H04N19/105 , H04N19/107 , H04N19/12 , H04N19/134 , H04N19/14 , H04N19/167 , H04N19/176 , H04N19/182 , H04N19/50 , H04N19/503 , H04N19/51 , H04N19/513 , H04N19/60 , H04N19/61 , H04N19/63 , H04N19/86 , G06F11/10
CPC分类号： H04N19/86 , H04N19/503 , H04N19/51 , H04N19/527 , H04N19/61
摘要： In a predictive coding device responding to a sequence of image data signals representative of picture elements to produce a sequence of coded output signals, a plurality of provisional error signals are calculated for each picture element from the image data signals and different provisional prediction signals sent from predictors and are given weights in multipliers from a weight decision circuit in consideration of a position of each picture element to produce weighted error signals. The weighted error signals are summed up into a first sum signal by a first adder circuit and thereafter processed into the coded output signals and local decoded signals which are sent to the predictors. The predictors may carry out either different prediction from one another for each picture element or identical prediction in relation to different blocks. Alternatively, a motion vector which is calculated for each block may be smoothed in consideration of the other motion vectors calculated for adjacent blocks on motion-compensated prediction. Thus, weighted means values are calculated as the weighted error signals and/or smoothed motion vector at every picture element so as to mitigate a discontinuity among the blocks.
摘要翻译：在响应表示图像元素的图像数据信号序列的预测编码装置中产生编码输出信号序列时，根据图像数据信号和从图像数据信号发送的不同临时预测信号计算出多个临时误差信号考虑到每个图像元素的位置以产生加权误差信号，从加权判定电路给出乘法器中的加权。加权误差信号由第一加法电路相加到第一和信号中，然后被处理成被发送到预测器的编码输出信号和局部解码信号。预测器可以对于每个像素执行不同的预测，或者相对于不同的块执行相同的预测。或者，考虑到针对运动补偿预测的相邻块计算的其他运动矢量，可以平滑针对每个块计算的运动矢量。因此，加权平均值被计算为每个图像元素处的加权误差信号和/或平滑运动矢量，以便减轻各块之间的不连续性。

2. 发明授权

US4987490A Decoding device capable of forwardly and backwardly reproducing pictures with a high quality 失效
标题翻译：解码装置能够以高品质向前和向后再现图像
公开(公告)号：US4987490A
公开(公告)日：1991-01-22
申请号：US523856
申请日：1990-05-15
申请人： Mutsumi Ohta
发明人： Mutsumi Ohta
IPC分类号： H04N19/50 , G06T9/00 , H04N5/85 , H04N5/926 , H04N19/42 , H04N19/423 , H04N19/44 , H04N19/503 , H04N19/82
CPC分类号： H04N5/9262 , H04N19/503 , H04N19/577 , H04N19/61 , H04N19/82 , H04N5/85
摘要： In a decoding device for decoding an input signal into a decoded signal, a delay circuit delays the decoded signal into a delayed signal with a delay equal to a frame period of a digital video signal which is encoded into an encoded signal by interframe predictive encoding. A forward filter of a predetermined filtering characteristic filters the delayed signal into a first filtered signal. An adder adds the input signal to the first filtered signal to produce an added signal. A subtracter subtracts the input signal from the delayed signal to produce a subtracted signal. An inverse filter filters the subtracted signal into a second filtered signal. Responsive to a mode signal, a selector selects one of the added and the second filtered signals to produce, as the decoded signal, the added and the second filtered signals when the mode signal indicates that the input signal is produced in a forward direction from a leading part to a trailing part of the encoded signal and when the mode signal indicates that the input signal is produced in a backward direction reversed relative to the forward direction, respectively. Another inverse filter may be inserted between the delaying circuit and the subtracter. In this case, the subtracter and the second filter are replaced in position with each other.
摘要翻译：在用于将输入信号解码为解码信号的解码装置中，延迟电路将经解码的信号延迟延迟等于通过帧间预测编码编码为编码信号的数字视频信号的帧周期的延迟信号。预定滤波特性的正向滤波器将延迟的信号滤波成第一滤波信号。加法器将输入信号添加到第一滤波信号以产生相加信号。减法器从延迟信号中减去输入信号以产生相减信号。逆滤波器将减去的信号滤波成第二滤波信号。响应于模式信号，当模式信号指示从正向方向产生输入信号时，选择器选择相加和第二滤波信号之一作为解码信号产生相加和第二滤波信号引导部分到编码信号的尾部，并且当模式信号指示输入信号分别产生在相反于正向的反向方向时。可以在延迟电路和减法器之间插入另一个反相滤波器。在这种情况下，减法器和第二过滤器彼此置换。

3. 发明授权

US4985782A Reproduction system capable of reproducing a still image by interrupting a sequence of recorded signals 失效
标题翻译：能够通过中断记录信号序列来再现静止图像的再生系统
公开(公告)号：US4985782A
公开(公告)日：1991-01-15
申请号：US189145
申请日：1988-05-02
申请人： Toshio Koga , Junichi Ohki , Mutsumi Ohta , Hideto Kunihiro
发明人： Toshio Koga , Junichi Ohki , Mutsumi Ohta , Hideto Kunihiro
IPC分类号： H04N5/92 , G11B20/10 , H04N5/85 , H04N5/926 , H04N5/93
CPC分类号： H04N5/93 , H04N5/9262 , H04N5/85
摘要： In a reproduction system for use in reproducing a still image from a sequence of predictive error signals which is read out of a memory and which is preliminarily processed into a sequence of preliminary processed signals, an intermediate circuit interrupts the preliminary processed signals in response to an external command signal. In the intermediate circuit, the external command signal is resampled by a sequence of frame pulses in a resampling circuit into a resampled signal so as to close a gate circuit. No predictive error signal is sent to an adder circuit during absence of the gate circuit. An identical error signal is repeatedly produced as a sequence of reproduced signals to reproduce the still image.
摘要翻译：在从存储器读出并预先处理为预处理信号序列的预测误差信号序列中再现静止图像的再现系统中，中间电路（31）中断预处理信号对外部命令信号的响应。在中间电路中，外部命令信号通过重采样电路（34）中的帧脉冲序列重采样为重采样信号，以闭合栅极电路（35）。在门电路不存在期间，没有预测误差信号发送到加法电路（18）。重复产生相同的误差信号作为再现信号的序列以再现静止图像。

4. 发明授权

US4931879A Image processing system for recording or reproducing an image signal sequence which has been encoded by employing two predictive coding methods and combining the results of those methods 失效
标题翻译：用于记录或再现已经通过采用两种预测编码方法编码的图像信号序列并组合这些方法的结果的图像处理系统
公开(公告)号：US4931879A
公开(公告)日：1990-06-05
申请号：US189249
申请日：1988-05-02
申请人： Toshio Koga , Junichi Ohki , Mutsumi Ohta , Hideto Kunihiro
发明人： Toshio Koga , Junichi Ohki , Mutsumi Ohta , Hideto Kunihiro
IPC分类号： G06T9/00 , G11B27/034 , G11B27/10 , G11B27/30 , G11B27/32 , H04N5/783 , H04N5/85 , H04N5/926 , H04N7/32 , H04N7/36
CPC分类号： H04N19/124 , G11B27/105 , H04N19/50 , H04N19/503 , H04N5/9262 , G11B2220/213 , G11B2220/2545 , G11B27/034 , G11B27/3027 , G11B27/329 , H04N5/783 , H04N5/85
摘要： In an image recording system for use in recording a sequence of coded signals on a recording medium, such as a CD-ROM in response to a sequence of image signals divisible into a succession of frames each of which is subdivided into a plurality of splits, the image signals are selectively subjected to interframe coding and intraframe coding in a coder to be coded into first and second error signals, respectively, under control of a coding control circuit. The intraframe coding may be carried out about a selected split at every frame, at every preselected period, or at predetermined positions of each scene. The second and the first error signals are rearranged into the coded signals by delaying the second error signal relative to the first error signal. Such a second error signal serves to reproduce an initial image on reproducing the coded signals and enables a reverse reproduction, a quick search, a high speed reproduction, and the like in a reproducing system.

5. 发明授权

US4734767A Encoder capable of faithfully and adaptively encoding a moving image 失效
标题翻译：能够对运动图像进行忠实和自适应编码的编码器
公开(公告)号：US4734767A
公开(公告)日：1988-03-29
申请号：US29565
申请日：1987-03-24
申请人： Masahide Kaneko , Mutsumi Ohta , Kiichi Matsuda , Yoichi Kato
发明人： Masahide Kaneko , Mutsumi Ohta , Kiichi Matsuda , Yoichi Kato
IPC分类号： H04B14/00 , G06T9/00 , H03M7/30 , H03M7/38 , H04N19/60 , H04N7/12
CPC分类号： H04N19/48 , H04N19/12 , H04N19/126 , H04N19/14 , H04N19/176 , H04N19/18 , H04N19/60 , H04N19/61 , H04N19/124 , H04N19/13 , H04N19/132 , H04N19/146 , H04N19/152 , H04N19/91
摘要： In an encoder responsive to a sequence of coefficient blocks each of which is composed of a plurality of orthogonal transform coefficients subjected to predictive encoding and orthogonal transform, the coefficient blocks are classified by a classification circuit (55) into a plurality of classes to produce a control signal (CONT) representative of the classes. A quantization unit (60), a code conversion unit (61), and a coefficient selection unit (62, 64) are controlled by the control signal to select quantization characteristics, code conversion characteristics, and coefficient selection characteristics. The quantization unit comprises a plurality of quantizers corresponding to the quantization characteristics while the code conversion unit and the coefficient selection unit comprise a plurality of code converters and a plurality of selection tables corresponding to the code conversion characteristics and the coefficient selection characteristics, respectively. Consequently, the coefficients are adaptively encoded into a reduced amount of encoded codes on encoding a moving image.
摘要翻译：在响应于系数块序列的编码器中，每个系数块由经过预测编码和正交变换的多个正交变换系数组成，系数块由分类电路（55）分类成多个类别，以产生控制信号（CONT）代表类。通过控制信号来控制量化单元（60），代码转换单元（61）和系数选择单元（62,64），以选择量化特性，代码转换特性和系数选择特性。量化单元包括与量化特性相对应的多个量化器，而代码转换单元和系数选择单元分别包括与代码转换特性和系数选择特性相对应的多个代码转换器和多个选择表。因此，在对运动图像进行编码时，系数被自适应地编码为减少量的编码代码。

6. 发明授权

US5999957A Lossless transform coding system for digital signals 失效
标题翻译：用于数字信号的无损变换编码系统
公开(公告)号：US5999957A
公开(公告)日：1999-12-07
申请号：US999397
申请日：1997-12-29
申请人： Mutsumi Ohta
发明人： Mutsumi Ohta
IPC分类号： H03M7/00 , G06F17/14 , G06T9/00 , H03M7/30 , H03M7/40
CPC分类号： G06T9/007 , G06F17/147
摘要： The invention provides a coding system and a decoding system wherein a discrete cosine transform which provides a high coding efficiency is approximated to allow reversible coding and decoding while maintaining the high coding efficiency and a system which includes such coding and decoding systems. Reversible coding is realized by multiplying a transform matrix by a fixed number for each row to approximate the transform matrix with integer values, performing re-quantization in a basic region defined by a multiple of a determinant for suppressing redundancy while maintaining a condition wherein reversible coding is possible in the basic region, and performing re-quantization for the entire region making use of the fact that such basic region appears periodically in a signal space.
摘要翻译：本发明提供了一种编码系统和解码系统，其中提供高编码效率的离散余弦变换近似于允许可逆编码和解码同时保持高编码效率，并且包括这样的编码和解码系统的系统。可逆编码通过将每行的变换矩阵乘以固定数来实现，以使整数值近似于变换矩阵，在由多个用于抑制冗余的行列式确定的基本区域中执行重新量化，同时保持可逆编码在基本区域中是可能的，并且利用这样的基本区域在信号空间中周期性地出现的事实，对整个区域进行重新量化。

7. 发明授权

US5719627A System and method for motion compensation on sub-band represented signals of motion picture 失效
标题翻译：运动补偿系统和方法用于子带表示的运动图像信号
公开(公告)号：US5719627A
公开(公告)日：1998-02-17
申请号：US613764
申请日：1996-02-28
申请人： Mutsumi Ohta
发明人： Mutsumi Ohta
IPC分类号： H04N1/41 , H04N19/50 , H04N19/503 , H04N19/51 , H04N19/523 , H04N19/61 , H04N19/63 , H04N7/32
CPC分类号： H04N19/61 , H04N19/51 , H04N19/63 , H04N19/20
摘要： For digital signals provided with motion vectors of a plurality of regions, a conversion coefficient for a respective one of the motion vectors is determined in accordance with the respective motion vector and a shape of a corresponding one of the regions on which the respective motion vector represents a motion, linear conversions of the digital signals are performed by using the respective coefficients of the motion vectors, and an accumulation is made of results of the conversions for the respective motion vector by the linear conversion step so that the linear conversions are overlapped with each other.
摘要翻译：对于设置有多个区域的运动矢量的数字信号，根据各个运动矢量和相应运动矢量表示的相应一个区域的形状来确定运动矢量中的相应运动矢量的转换系数通过使用运动矢量的各个系数来执行运动，数字信号的线性转换，并且通过线性转换步骤对各个运动矢量的转换结果进行积累，使得线性转换与每个运动矢量重叠其他。

8. 发明授权

US5703799A Lossless transform coding system for digital signals 失效
标题翻译：用于数字信号的无损变换编码系统
公开(公告)号：US5703799A
公开(公告)日：1997-12-30
申请号：US668046
申请日：1996-06-17
申请人： Mutsumi Ohta
发明人： Mutsumi Ohta
IPC分类号： H03M7/00 , G06F17/14 , G06T9/00 , H03M7/30 , H03M7/40
CPC分类号： G06T9/007 , G06F17/147
摘要： The invention provides a coding system and a decoding system wherein a discrete cosine transform which provides a high coding efficiency is approximated to allow reversible coding and decoding while maintaining the high coding efficiency and a system which includes such coding and decoding systems. Reversible coding is realized by multiplying a transform matrix by a fixed number for each row to approximate the transform matrix with integer values, performing requantization in a basic region defined by a multiple of a determinant for suppressing redundancy while maintaining a condition wherein reversible coding is possible in the basic region, and performing requantization for the entire region making use of the fact that such basic region appears periodically in a signal space.
摘要翻译：本发明提供了一种编码系统和解码系统，其中提供高编码效率的离散余弦变换近似于允许可逆编码和解码同时保持高编码效率，并且包括这样的编码和解码系统的系统。可逆编码是通过将每一行的变换矩阵乘以固定数来实现的，以使整数值近似于变换矩阵，在由可逆编码可能进行可逆编码的状态的同时保持冗余的一个行列式的倍数所定义的基本区域中进行重新排序在基本区域中，并且利用这样的基本区域在信号空间中周期性地出现的事实来对整个区域进行再量化。

9. 发明授权

US4908862A Encoding system capable of accomplishing a high efficiency by anterior and/or posterior processing to quantization 失效
标题翻译：编码系统能够通过对量化的前处理和/或后处理来实现高效率
公开(公告)号：US4908862A
公开(公告)日：1990-03-13
申请号：US118923
申请日：1987-11-10
申请人： Masahide Kaneko , Atsushi Koike , Mutsumi Ohta , Kiichi Matsuda , Naoki Mukawa , Yoichi Kato
发明人： Masahide Kaneko , Atsushi Koike , Mutsumi Ohta , Kiichi Matsuda , Naoki Mukawa , Yoichi Kato
IPC分类号： H04N7/26 , H04N7/30
CPC分类号： H04N19/60 , H04N19/124 , H04N19/13 , H04N19/132 , H04N19/91
摘要： In an encoding system responsive to a sequence of coefficient signals which results from a predetermined linear transform and which is divided into a sequence of blocks, anterior processing is carried out prior to quantization about the coefficient signals in each block to determine a significant area of the coefficient signals by comparing each level of the coefficient signals with a threshold level. Only the coefficient signals within the significant area are judged to be valid and produced as a sequence of significant coefficient signals from a classifying circuit (20) to be quantized by a quantizer (15) into a sequence of quantized signals. The quantized signal sequence is subjected to posterior processing to produce a sequence of encoded signals. The significant area may be decided by the use of a selected one of zone detection, zigzag scanning, and adaptive scanning. In the posterior processing, the quantized signals may be encoded into the encoded signals by the use of a plurality of code sets or tables.

10. 发明授权

US07339706B2 Error diffusion processing circuit for an image signal which improves an output image 失效
标题翻译：用于改善输出图像的图像信号的误差扩散处理电路
公开(公告)号：US07339706B2
公开(公告)日：2008-03-04
申请号：US10437893
申请日：2003-05-15
申请人： Mutsumi Ohta
发明人： Mutsumi Ohta
IPC分类号： H04N1/405
CPC分类号： H04N1/4053
摘要： An error diffusion processing circuit includes an error diffusion processing unit and a noise signal unit. The error diffusion processing unit generates a first output image signal of a first pixel by carrying out an error diffusion process, based on an inputted first input image signal of the first pixel. The number of gray tones of the first output image signal is smaller than that of the input image signal. The noise signal unit which generates a noise signal and outputs the noise signal to the error diffusion processing unit. The noise signal is inputted into a feedback loop of the error diffusion process.
摘要翻译：误差扩散处理电路包括误差扩散处理单元和噪声信号单元。误差扩散处理单元基于输入的第一像素的第一输入图像信号，进行误差扩散处理，生成第一像素的第一输出图像信号。第一输出图像信号的灰度色调数小于输入图像信号的灰度色调。产生噪声信号的噪声信号单元，并将噪声信号输出到误差扩散处理单元。噪声信号被输入到误差扩散处理的反馈回路中。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式