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.

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。

公开(公告)号：US4805017A

公开(公告)日：1989-02-14

申请号：US21909

申请日：1987-03-04

申请人： Masahide Kaneko ,  Kiichi Matsuda ,  Naoki Mukawa ,  Toshio Koga

发明人： Masahide Kaneko ,  Kiichi Matsuda ,  Naoki Mukawa ,  Toshio Koga

IPC分类号： H04N19/50 ,  G06T9/00 ,  H04N7/18 ,  H04N7/12

CPC分类号： H04N19/61 ,  H04N19/503 ,  H04N19/30

摘要： A motion compensation difference interframe or intra-frame coding system includes a block data redundancy compression and coding unit, a PIXEL data coding unit and a prediction data generator unit. The block data redundancy compression and coding unit codes a motion compensated (MC) difference between an input image in a block and a motion predicted image from the prediction data generator unit, and transmits coded data to a receiver. The PIXEL data coding unit receives an error between the MC difference and a decoded MC difference from the block data redundancy compression and coding unit, rearranges the error in PIXEL data and codes the PIXEL error, when the error is greater than a predetermined value. The PIXEL coded data is also transmitted to the receiver. The prediction data generator unit generates predicted block data of the motion of the image. The redundancy compression and coding unit may include a filter circuit rejecting pulse components contained in the MC difference.

摘要翻译： 运动补偿差分帧间或帧内编码系统包括块数据冗余压缩编码单元，PIXEL数据编码单元和预测数据生成单元。 块数据冗余压缩和编码单元对来自预测数据发生器单元的块中的输入图像和运动预测图像之间的运动补偿（MC）差进行编码，并将编码数据发送到接收器。 PIXEL数据编码单元从块数据冗余压缩和编码单元接收MC差异和解码的MC差异之间的错误，重新排列PIXEL数据中的错误，并在错误大于预定值时对PIXEL错误进行编码。 PIXEL编码数据也被发送到接收机。 预测数据生成部生成图像的运动的预测块数据。 冗余压缩编码单元可以包括拒绝包含在MC差异中的脉冲分量的滤波器电路。

公开(公告)号：US4791485A

公开(公告)日：1988-12-13

申请号：US929435

申请日：1986-12-19

申请人： Hideo Kuroda ,  Naoki Mukawa ,  Makoto Hiraoka ,  Kiichi Matsuda ,  Mitsuo Nishiwaki ,  Shuzo Tsugane

发明人： Hideo Kuroda ,  Naoki Mukawa ,  Makoto Hiraoka ,  Kiichi Matsuda ,  Mitsuo Nishiwaki ,  Shuzo Tsugane

IPC分类号： H03M13/00 ,  H04B14/06 ,  H04L1/00 ,  H04N19/50 ,  H04N7/12

CPC分类号： H04N19/895 ,  H04N19/50

摘要： An inter-frame encoding/decoding equipment for television signals consists of inter-frame encoding equipment encoding a difference between television signals and the output of a frame memory and inter-frame decoding equipment which receives an encoded signal sent from the inter-frame encoding device via a transmission line, which decodes by adding the output of the frame memory to the encoded signal. The inter-frame encoding equipment is provided with a first operation circuit which operates the remainders obtained by dividing, by a predetermined value, the number of bits of logic "1" in the bit groups into which the output or the input of the frame memory is divided by a predetermined unit. The inter-frame decoding equipment is provided with a second operation circuit which operates the remainders obtained by dividing, by a predetermined value, the number of bits of logic "1" in the bit groups into which the output or the input of the frame memory is divided by a predetermined unit. The inter-frame decoding equipment is further provided with a comparator circuit which compares and checks the values operated by the first and the second operation circuits to detect a transmission error.

公开(公告)号：US4677480A

公开(公告)日：1987-06-30

申请号：US620516

申请日：1984-06-14

申请人： Hideo Kuroda ,  Naoki Mukawa ,  Makoto Hiraoka ,  Kiichi Matsuda ,  Mitsuo Nishiwaki ,  Shuzo Tsugane

发明人： Hideo Kuroda ,  Naoki Mukawa ,  Makoto Hiraoka ,  Kiichi Matsuda ,  Mitsuo Nishiwaki ,  Shuzo Tsugane

IPC分类号： H03M13/00 ,  H04B14/06 ,  H04L1/00 ,  H04N19/50 ,  H04N7/12

CPC分类号： H04N19/895 ,  H04N19/50

摘要： Inter-frame encoding/decoding equipment for television signals includes inter-frame encoding equipment generating an encoded signal by encoding a difference between television signals and the output of a frame memory and inter-frame decoding equipment which receives the encoded signal sent from the inter-frame encoding device via a transmission line. The decoding equipment decodes by adding its output of the frame memory to the encoded signal. The inter-frame encoding equipment is provided with a first operation circuit which calculates remainders obtained by dividing a predetermined value, into bit groups of the output or the input of the frame memory. The inter-frame decoding equipment is provided with a second operation circuit which calculates remainders obtained by dividing, the predetermined value, into the bit groups of the output or the input of its frame memory. The inter-frame decoding equipment is further provided with a comparator circuit which compares and checks the remainders calculated by the first and the second operation circuits to detect a transmission error.

摘要翻译： 用于电视信号的帧间编码/解码设备包括帧间编码设备，通过编码电视信号与帧存储器的输出之间的差异以及帧间解码设备产生编码信号，帧间解码设备接收从帧间编码信号发送的编码信号， 帧编码装置。 解码设备通过将帧存储器的输出加到编码信号来进行解码。 帧间编码装置设置有第一运算电路，其计算通过将预定值除以获得的余数到帧存储器的输出或输入的比特组。 帧间解码装置设置有第二运算电路，其计算通过将预定值除以其帧存储器的输出或输入的位组而获得的余数。 帧间解码装置还具备比较电路，比较电路，对由第一和第二运算电路计算出的余数进行比较和检查，以检测传输误差。

公开(公告)号：US4593267A

公开(公告)日：1986-06-03

申请号：US509398

申请日：1983-06-30

申请人： Hideo Kuroda ,  Naoki Mukawa ,  Kiichi Matsuda ,  Toshihiro Honma ,  Hiroshi Fukuda

发明人： Hideo Kuroda ,  Naoki Mukawa ,  Kiichi Matsuda ,  Toshihiro Honma ,  Hiroshi Fukuda

IPC分类号： G11B20/10 ,  G11B20/14 ,  H03M7/42 ,  G11B5/09

CPC分类号： G11B20/1426 ,  G11B20/10527 ,  H03M7/42

摘要： A digital data code conversion circuit for a variable-word-length data code includes a data code conversion portion and a preparation circuit. In the preparation circuit, a variable-word-length data code having a word length greater than a number n is divided into a plurality of variable-word-length data codes having a word length less than or equal to the number n. The divided variable-word-length data codes are converted into fixed-word-length data codes having a word length n in the data code conversion portion.

摘要翻译： 用于可变字长数据码的数字数据代码转换电路包括数据代码转换部分和准备电路。 在准备电路中，具有大于数字n的字长的可变字长数据码被划分成具有小于或等于数字n的字长的多个可变字长数据码。 分割的可变字长数据码在数据码转换部分中被转换为字长为n的固定字长数据码。

公开(公告)号：US4920426A

公开(公告)日：1990-04-24

申请号：US118128

申请日：1987-11-09

申请人： Yoshinori Hatori ,  Toshio Koga ,  Kiichi Matsuda ,  Naoki Mukawa

发明人： Yoshinori Hatori ,  Toshio Koga ,  Kiichi Matsuda ,  Naoki Mukawa

IPC分类号： G06T9/00 ,  H04N7/26 ,  H04N7/30

CPC分类号： H04N19/14 ,  H04N19/126 ,  H04N19/132 ,  H04N19/149 ,  H04N19/176 ,  H04N19/46 ,  H04N19/60 ,  H04N19/13 ,  H04N19/146 ,  H04N19/91

摘要： In an image coding system having a plurality of coding characteristics, such as quantization characteristics, information of a digital image signal sequence is monitored in each of a number of predetermined intervals by forming a histogram of a sequence of coefficients which is calculated from the digital image signal sequence in accordance with each of the coding characteristics. The amount of information is calculated by summing up the coefficients in relation to every one of the coding characteristics. An optimum one of the coding characteristics is indicated by the coding control circuit to code the coefficient sequence into a sequence of coded signals in accordance with the optimum coding characteristic. The coefficient sequence in each frame may be divided into a sequence of blocks each of which is judged to be either valid or invalid in relation to each coding characteristic. Results of judgement may be included in the amount of information.

摘要翻译： 在具有多个编码特性（诸如量化特性）的图像编码系统中，通过形成从数字图像计算出的系数序列的直方图来监视数字图像信号序列的信息，其数量以预定间隔的数量 信号序列根据每个编码特性。 通过将与每个编码特性相关的系数相加来计算信息量。 由编码控制电路指示最佳编码特性之一，根据最佳编码特性将系数序列编码为编码信号序列。 每个帧中的系数序列可以被划分为块序列，每个块的序列被判断为与每个编码特性有关或无效。 判断结果可能包括在信息量中。

公开(公告)号：US5457496A

公开(公告)日：1995-10-10

申请号：US256173

申请日：1994-06-28

申请人： Takashi Hamano ,  Kiyoshi Sakai ,  Kiichi Matsuda

发明人： Takashi Hamano ,  Kiyoshi Sakai ,  Kiichi Matsuda

IPC分类号： H04N19/102 ,  H04N19/134 ,  H04N19/136 ,  H04N19/137 ,  H04N19/139 ,  H04N19/157 ,  H04N19/159 ,  H04N19/172 ,  H04N19/189 ,  H04N19/196 ,  H04N19/423 ,  H04N19/46 ,  H04N19/50 ,  H04N19/503 ,  H04N19/51 ,  H04N19/70 ,  H04N19/91 ,  H04N7/36

CPC分类号： H04N19/503

摘要： Encoding and decoding systems for a digital image communication apparatus suppresses any reduction in the encoding efficiency due to leaky prediction. A range correcting unit (3) corrects the range of data of a preceding frame stored in a memory (1) according to a reference value outputted from a reference value outputting unit (2). Thereafter, a leak coefficient multiplying unit (4) multiplies the data by a predetermined leak coefficient and outputs the product data. The data outputted from the leak coefficient multiplying unit (4) are uncorrected by an uncorrecting unit (5) to restore the range corrected by the range correcting unit (3). A predictive error outputting unit (6) detects the difference between the digital image data of an inputted present frame and the data uncorrected by the uncorrecting unit (5), and outputs the difference as a predictive error. A predictive error encoding unit (7) encodes the predictive error outputted from the predictive error outputting unit (6), and outputs the encoded predictive error.

摘要翻译： PCT No.PCT / JP93 / 01507 Sec。 371日期：1994年6月28日 102（e）日期1994年6月28日PCT提交1993年10月19日PCT公布。 出版物WO94 / 11992 日期1994年5月26日。数字图像通信装置的编码和解码系统抑制由于泄漏预测而导致的编码效率的任何降低。 范围校正单元（3）根据从参考值输出单元（2）输出的参考值来校正存储器（1）中存储的前一帧的数据范围。 此后，泄漏系数乘法单元（4）将数据乘以预定的泄漏系数并输出产品数据。 从泄漏系数乘法单元（4）输出的数据由未校正单元（5）校正，以恢复由范围校正单元（3）校正的范围。 预测误差输出单元（6）检测输入的当前帧的数字图像数据与未校正单元（5）未校正的数据之间的差异，并输出该差值作为预测误差。 预测误差编码单元（7）对从预测误差输出单元（6）输出的预测误差进行编码，并输出编码的预测误差。

公开(公告)号：US5436740A

公开(公告)日：1995-07-25

申请号：US88650

申请日：1993-07-09

申请人： Akira Nakagawa ,  Eishi Morimatsu ,  Makiko Konoshima ,  Kiichi Matsuda

发明人： Akira Nakagawa ,  Eishi Morimatsu ,  Makiko Konoshima ,  Kiichi Matsuda

IPC分类号： G03H1/08 ,  G03H1/26

CPC分类号： G03H1/08 ,  G03H1/268

摘要： A holographic stereogram which includes a plurality of element holograms and which reproduces a stereoscopic image by irradiation of coherent light, wherein each element hologram is loaded with a modulation value (pattern) corresponding to the stereoscopic image, the modulation value being a one-dimensional or two-dimensional transform coefficient obtained by one-dimensional or two-dimensional sine transform or discrete sine transform of the distribution of the intensity of diffraction light expressing the stereoscopic image, enabling simplification of the drive system of the display device displaying the stereoscopic image and reproduction of the original stereoscopic image much more faithfully.

摘要翻译： 一种全息立体图，其包括多个元素全息图，并且通过相干光的照射再现立体图像，其中每个元素全息图被加载对应于立体图像的调制值（图案），调制值是一维或 通过一维或二维正弦变换获得的二维变换系数或表示立体图像的衍射光强度分布的离散正弦变换，能够简化显示立体图像和再现的显示装置的驱动系统 的原始立体图像更忠实。

公开(公告)号：US4743967A

公开(公告)日：1988-05-10

申请号：US25671

申请日：1987-03-13

申请人： Yuuji Takenaka ,  Toshihiro Homma ,  Kiichi Matsuda

发明人： Yuuji Takenaka ,  Toshihiro Homma ,  Kiichi Matsuda

IPC分类号： G01B5/008 ,  H04N7/36 ,  H04N7/137

CPC分类号： H04N19/503

摘要： A differential coding apparatus having a plurality of predictive function computing circuits and an optimum predicted value determining circuit. The optimum predicted value determining circuit determines the optimum predicted value from the plurality of predicted values by using a quantized prediction error used as an output signal of the apparatus, instead of a local decoded signal, and carries out the determining operation of the optimum predicted value in parallel with the quantized prediction error producing operation.

摘要翻译： 一种具有多个预测函数计算电路和最佳预测值确定电路的差分编码装置。 最佳预测值确定电路通过使用用作装置的输出信号的量化预测误差来代替本地解码信号，从多个预测值确定最佳预测值，并执行最佳预测值的确定操作 与量化的预测误差产生操作并行。