公开(公告)号：US5627590A

公开(公告)日：1997-05-06

申请号：US592771

申请日：1996-01-26

申请人： Takashi Hamano ,  Kiyoshi Sakai ,  Kiichi Matsuda

发明人： Takashi Hamano ,  Kiyoshi Sakai ,  Kiichi Matsuda

IPC分类号： G06T9/00 ,  H04L12/951 ,  H04N7/60 ,  H04N19/00 ,  H04N19/107 ,  H04N19/136 ,  H04N19/172 ,  H04N19/196 ,  H04N19/423 ,  H04N19/50 ,  H04N19/503 ,  H04N19/51 ,  H04N19/61 ,  H04N19/625 ,  H04N19/65 ,  H04N19/85 ,  H04N19/895 ,  H04N19/91 ,  H04N21/236 ,  H04N21/434 ,  H04Q11/04 ,  H04N7/50

CPC分类号： H04Q11/0478 ,  H04N19/503 ,  H04N19/51 ,  H04N19/61 ,  H04N19/895 ,  H04N21/236 ,  H04N21/434 ,  H04L2012/5616 ,  H04L2012/5646 ,  H04L2012/5651 ,  H04N19/107

摘要： An image encoding and transmitting system is an image transmission system for transmitting digital data such as TV telephones. The system for dividing input frame data into a plurality of blocks before transmitting them comprises on its sending side an intra-frame/inter-frame determiner for receiving intra-frame data and inter-frame data and selecting either of them for output, and a difference collator for having the intra-frame/inter-frame determiner compulsorily output intra-frame data at the time of data input for the next frame when one or more data in each block forming inter-frame data are larger than a predetermined threshold. The system also comprises on its receiving side an picture element domain frame data storage for storing received data in the picture element domain, and a motion vector detector for detecting according to the contents in the storage a motion vector using the data in the block surrounding the discarded block in order to guess the data in the discarded block.

摘要翻译： 图像编码和发送系统是用于发送诸如电视电话的数字数据的图像传输系统。 用于在发送侧之前将输入帧数据划分为多个块的系统在其发送侧包括用于接收帧内数据和帧间数据的帧内/帧间确定器，并选择其中任一个进行输出， 当在形成帧间数据的每个块中的一个或多个数据大于预定阈值时，用于使帧内/帧间确定器在下一帧的数据输入时强制输出帧内数据的差分校验器。 该系统还在其接收侧包括用于存储图像元素域中的接收数据的图像元素域帧数据存储器，以及运动矢量检测器，用于根据存储器中的内容，使用围绕该块的块中的数据检测运动矢量 丢弃块以便猜测丢弃块中的数据。

公开(公告)号：US5610660A

公开(公告)日：1997-03-11

申请号：US404245

申请日：1995-03-15

申请人： Takashi Hamano ,  Kiyoshi Sakai ,  Kiichi Matsuda

发明人： Takashi Hamano ,  Kiyoshi Sakai ,  Kiichi Matsuda

IPC分类号： H04N5/04 ,  G06T9/00 ,  H03M7/40 ,  H04L1/00 ,  H04N1/36 ,  H04N7/54 ,  H04N19/00 ,  H04N19/102 ,  H04N19/107 ,  H04N19/137 ,  H04N19/14 ,  H04N19/149 ,  H04N19/174 ,  H04N19/176 ,  H04N19/196 ,  H04N19/423 ,  H04N19/46 ,  H04N19/50 ,  H04N19/503 ,  H04N19/51 ,  H04N19/61 ,  H04N19/625 ,  H04N19/65 ,  H04N19/67 ,  H04N19/70 ,  H04N19/85 ,  H04N19/89 ,  H04N19/91 ,  H04N7/52 ,  H04N7/50

CPC分类号： H04N7/54 ,  H04N19/61 ,  H04N19/89

摘要： For an image data such as a motion picture image data composed of three hierarchical layers formed of slices, each of which having a plurality of macroblocks and one picture having a plurality of the slices, a synchronous word is adaptively inserted to each header of the slices and the picture according to a characteristic of the image data. It is possible to effectively perform the localization of errors. A synchronous word multiplexing system for coded image data inputs and codes image data, converts the coded data to a variable-length coded data, divides the image coded data into a plurality of data signals, and multiplies a synchronous word per a predetermined divided unit. Further, a timing signal for multiplexing synchronous words to the image coded data is generated based on a characteristic data, and the timing of multiplexing synchronous words is controlled based on characteristics of the image data.

摘要翻译： 对于图像数据，例如由片段形成的三个层级组成的运动图像图像数据，每个片段具有多个宏块和一个具有多个片段的图像，同步字被自适应地插入片段的每个头部 以及根据图像数据的特征的图像。 可以有效地执行错误的本地化。 用于编码图像数据的同步字多路复用系统输入和编码图像数据，将编码数据转换为可变长度编码数据，将图像编码数据分成多个数据信号，并且每个预定分割单元乘以同步字。 此外，基于特征数据生成用于将同步字复用到图像编码数据的定时信号，并且基于图像数据的特性来控制复用同步字的定时。

公开(公告)号：US5510839A

公开(公告)日：1996-04-23

申请号：US909044

申请日：1992-07-06

申请人： Takashi Hamano ,  Kiyoshi Sakai ,  Kiichi Matsuda

发明人： Takashi Hamano ,  Kiyoshi Sakai ,  Kiichi Matsuda

IPC分类号： G06T9/00 ,  H04L12/951 ,  H04N7/60 ,  H04N19/00 ,  H04N19/107 ,  H04N19/136 ,  H04N19/172 ,  H04N19/196 ,  H04N19/423 ,  H04N19/50 ,  H04N19/503 ,  H04N19/51 ,  H04N19/61 ,  H04N19/625 ,  H04N19/65 ,  H04N19/85 ,  H04N19/895 ,  H04N19/91 ,  H04N21/236 ,  H04N21/434 ,  H04Q11/04 ,  H04N7/50

CPC分类号： H04Q11/0478 ,  H04N19/503 ,  H04N19/51 ,  H04N19/61 ,  H04N19/895 ,  H04N21/236 ,  H04N21/434 ,  H04L2012/5616 ,  H04L2012/5646 ,  H04L2012/5651 ,  H04N19/107

摘要： An image encoding and transmitting system is an image transmission system for transmitting digital data such as TV telephones. The system for dividing input frame data into a plurality of blocks before transmitting them comprises on its sending side an intra-frame/inter-frame determiner for receiving intra-frame data and inter-frame data and selecting either of them for output, and a difference collator for having the intra-frame/inter-frame determiner compulsorily output intra-frame data at the time of data input for the next frame when one or more data in each block forming inter-frame data are larger than a predetermined threshold. The system also comprises on its receiving side an picture element domain frame data storage for storing received data in the picture element domain, and a motion vector detector for detecting according to the contents in the storage a motion vector using the data in the block surrounding the discarded block in order to guess the data in the discarded block.

摘要翻译： 图像编码和发送系统是用于发送诸如电视电话的数字数据的图像传输系统。 用于在发送侧之前将输入帧数据划分为多个块的系统在其发送侧包括用于接收帧内数据和帧间数据的帧内/帧间确定器，并选择其中任一个进行输出， 当在形成帧间数据的每个块中的一个或多个数据大于预定阈值时，用于使帧内/帧间确定器在下一帧的数据输入时强制输出帧内数据的差分校验器。 该系统还在其接收侧包括用于存储图像元素域中的接收数据的图像元素域帧数据存储器，以及运动矢量检测器，用于根据存储器中的内容，使用围绕该块的块中的数据检测运动矢量 丢弃块以便猜测丢弃块中的数据。

公开(公告)号：US5191446A

公开(公告)日：1993-03-02

申请号：US594090

申请日：1990-10-09

申请人： Takashi Hamano ,  Kiyoshi Sakai ,  Kiichi Matsuda

发明人： Takashi Hamano ,  Kiyoshi Sakai ,  Kiichi Matsuda

IPC分类号： H04N7/50 ,  H04N21/236 ,  H04N21/434

CPC分类号： H04N21/434 ,  H04N19/00 ,  H04N19/61 ,  H04N19/619 ,  H04N21/236 ,  H04N19/70

摘要： An image data transmission system performs a coding of a plurality of picture elements in units of blocks. In order to prevent a deterioration of an image quality caused due to a loss of a packet cell on a transmission line without increasing a volume of data to be transmitted, a unit for producing a signal designating a loss compensation method to be performed on a receiving side is provided to be performed on a transmission side. The receiving side provides a unit for detecting a loss of the packet or cell and a unit for compensating the lost block data by the loss compensating method designated by the transmission side.

公开(公告)号：US5844611A

公开(公告)日：1998-12-01

申请号：US452834

申请日：1995-05-30

申请人： Takashi Hamano ,  Kiyoshi Sakai ,  Kiichi Matsuda

发明人： Takashi Hamano ,  Kiyoshi Sakai ,  Kiichi Matsuda

IPC分类号： G06T9/00 ,  H03M7/42 ,  H04N19/126 ,  H04N19/136 ,  H04N19/152 ,  H04N19/196 ,  H04N19/42 ,  H04N19/423 ,  H04N19/50 ,  H04N19/503 ,  H04N19/60 ,  H04N19/61 ,  H04N19/625 ,  H04N19/85 ,  H04N19/91 ,  H04N7/30

CPC分类号： H04N19/00 ,  H03M7/42 ,  H04N19/124 ,  H04N19/152 ,  H04N19/176 ,  H04N19/60 ,  H04N19/61 ,  H04N19/13 ,  H04N19/146 ,  H04N19/50 ,  H04N19/91

摘要： An image encoding control system includes an orthogonal transform encoder for carrying out orthogonal transform coding for each block which includes transform coefficients related to a plurality of blocks, each block obtained by dividing one picture of an input image signal into the plurality of blocks, a code control for controlling the transform coefficients obtained for each block so that the number of variable-length code words obtained for each block is equal to or smaller than a predetermined number of variable-length code words, a variable-length encoder for converting the transform coefficients obtained for each block into variable-length code words, and a buffer memory for temporarily storing the variable-length code words output by the variable-length encoder for each block.

摘要翻译： 图像编码控制系统包括正交变换编码器，用于对包括与多个块相关的变换系数的每个块执行正交变换编码，每个块通过将输入图像信号的一个图像分成多个块而获得;块 用于控制为每个块获得的变换系数，使得为每个块获得的可变长度码字的数量等于或小于预定数量的可变长度码字;可变长度编码器，用于将变换系数 对于每个块获得的可变长度码字;以及缓冲存储器，用于临时存储由每个块由可变长度编码器输出的可变长度码字。

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：US5844628A

公开(公告)日：1998-12-01

申请号：US592609

申请日：1996-01-26

申请人： Takashi Hamano ,  Kiyoshi Sakai ,  Kiichi Matsuda

发明人： Takashi Hamano ,  Kiyoshi Sakai ,  Kiichi Matsuda

IPC分类号： G06T9/00 ,  H04L12/951 ,  H04N7/60 ,  H04N19/00 ,  H04N19/107 ,  H04N19/136 ,  H04N19/172 ,  H04N19/196 ,  H04N19/423 ,  H04N19/50 ,  H04N19/503 ,  H04N19/51 ,  H04N19/61 ,  H04N19/625 ,  H04N19/65 ,  H04N19/85 ,  H04N19/895 ,  H04N19/91 ,  H04N21/236 ,  H04N21/434 ,  H04Q11/04 ,  H04N7/50

CPC分类号： H04Q11/0478 ,  H04N19/503 ,  H04N19/51 ,  H04N19/61 ,  H04N19/895 ,  H04N21/236 ,  H04N21/434 ,  H04L2012/5616 ,  H04L2012/5646 ,  H04L2012/5651 ,  H04N19/107

摘要： An image encoding and transmitting system is an image transmission system for transmitting digital data such as TV telephones. The system for dividing input frame data into a plurality of blocks before transmitting them comprises on its sending side an intra-frame/inter-frame determiner for receiving intra-frame data and inter-frame data and selecting either of them for output, and a difference collator for having the intra-frame/inter-frame determiner compulsorily output intra-frame data at the time of data input for the next frame when one or more data in each block forming inter-frame data are larger than a predetermined threshold. The system also comprises on its receiving side an picture element domain frame data storage for storing received data in the picture element domain, and a motion vector detector for detecting according to the contents in the storage a motion vector using the data in the block surrounding the discarded block in order to guess the data in the discarded block.

摘要翻译： 图像编码和发送系统是用于发送诸如电视电话的数字数据的图像传输系统。 用于在发送侧之前将输入帧数据划分为多个块的系统在其发送侧包括用于接收帧内数据和帧间数据的帧内/帧间确定器，并选择其中任一个进行输出， 当在形成帧间数据的每个块中的一个或多个数据大于预定阈值时，用于使帧内/帧间确定器在下一帧的数据输入时强制输出帧内数据的差分校验器。 该系统还在其接收侧包括用于存储图像元素域中的接收数据的图像元素域帧数据存储器，以及运动矢量检测器，用于根据存储器中的内容，使用围绕该块的块中的数据检测运动矢量 丢弃块以便猜测丢弃块中的数据。

公开(公告)号：US5719963A

公开(公告)日：1998-02-17

申请号：US454867

申请日：1995-05-31

申请人： Kimihiko Kazui ,  Kiyoshi Sakai ,  Kiichi Matsuda ,  Akira Nakagawa

发明人： Kimihiko Kazui ,  Kiyoshi Sakai ,  Kiichi Matsuda ,  Akira Nakagawa

IPC分类号： H04N7/30 ,  G06F17/14 ,  G06T1/20 ,  G06T9/00 ,  H03M7/30 ,  H04N1/41 ,  G06K9/20 ,  G06F15/00 ,  G06K9/38

CPC分类号： G06F17/147 ,  G06T9/007

摘要： A two-dimensional discrete cosine transform computing circuit has a transform block, formed by a multiplication unit and a Hadamard transform unit, which performs computations in a sequence of Hadamard transforms followed by multiplications in a two-dimensional discrete cosine transform, and in a sequence of multiplication followed by Hadamard transforms in an inverse two-dimensional discrete cosine transform. A memory block temporarily stores input/output data of the transform block; an input/output processing block performs pre-processing and post-processing such as cumulative addition and subtraction of input/output data of the transform block. A control block controls, when performing processing for either a two-dimensional discrete cosine transform or inverse two-dimensional discrete cosine transform, multiplications of coefficients in the transform block, read/write of the memory block, and the input/output processing block. This configuration achieves high-speed processing and a reduction in scale of the circuitry.

摘要翻译： 二维离散余弦变换计算电路具有由乘法单元和Hadamard变换单元形成的变换块，该单元在Hadamard变换序列中进行计算，随后在二维离散余弦变换中进行乘法，并以序列 的乘法，然后是逆二维离散余弦变换中的Hadamard变换。 存储块临时存储变换块的输入/输出数据; 输入/输出处理块执行诸如变换块的输入/输出数据的累积加法和减法的预处理和后处理。 当执行二维离散余弦变换或反向二维离散余弦变换的处理时，控制块控制变换块中的系数乘法，存储块的读/写和输入/输出处理块。 该配置实现了高速处理和电路规模的缩小。

公开(公告)号：US5235618A

公开(公告)日：1993-08-10

申请号：US609747

申请日：1990-11-06

申请人： Kiyoshi Sakai ,  Takashi Itoh ,  Kiichi Matsuda

发明人： Kiyoshi Sakai ,  Takashi Itoh ,  Kiichi Matsuda

IPC分类号： H04N19/102 ,  H04N7/24 ,  H04N19/00 ,  H04N19/13 ,  H04N19/147 ,  H04N19/172 ,  H04N19/423 ,  H04N19/503 ,  H04N19/70

CPC分类号： H04N21/23406 ,  H04N19/152 ,  H04N21/44004 ,  H04N19/50

摘要： A signal coding apparatus, which is coupled, via a transmission path, to a receiver having a receiver buffer and a decoder, includes a coding unit for coding a signal and outputting information generated in a frame unit, the information being a coded signal. The apparatus also includes a transmitter buffer for temporarily storing the information, and a controller for controlling an amount of the information on the basis of a storage capacity of the receiver buffer and an amount of the information which is contained in a frame per a unit time. There is also provided a method used in the above coding apparatus, and a signal coding transmission system employing the signal coding apparatus.

公开(公告)号：US07453941B1

公开(公告)日：2008-11-18

申请号：US09526619

申请日：2000-03-16

申请人： Akihiro Yamori ,  Takashi Hamano ,  Kiyoshi Sakai ,  Kouji Yamada

发明人： Akihiro Yamori ,  Takashi Hamano ,  Kiyoshi Sakai ,  Kouji Yamada

IPC分类号： H04N7/12

CPC分类号： H04N19/577 ,  H04N19/105 ,  H04N19/142 ,  H04N19/16 ,  H04N19/176 ,  H04N19/179 ,  H04N19/87

摘要： An encoding method, which achieves encoding efficiency, and good picture quality encoding even when there exists a picture in which a scene change occurs within an interlaced frame, is provided. A moving pictures encoding method treats a frame of interlaced image input signals as a picture, and performs prediction and encoding for this picture in macro-block units from a picture of both a forward picture, which is temporally in the past, and a backward picture, which is in the future. When performing encoding in accordance with the above-mentioned bi-directional picture, the method performs inter-field motion prediction, which treats as a unit a field, which divides each picture in macro-blocks into either odd numbers or even numbers of pixel scanning lines of this frame, and as a prediction mode, selectively switches in picture units between using prediction from a forward field motion vector for one field, and using prediction from a backward field motion vector for the other field, generates a predictive picture corresponding to the selected prediction mode, and encodes the input signal using the generated predictive picture.

摘要翻译： 提供了即使存在在交错帧内发生场景变化的图像的情况下也能够实现编码效率的编码方式和良好的图像质量编码。 运动图像编码方法将隔行扫描图像输入信号的帧作为图像进行处理，并且从宏块单位对来自时间上过去的前向图像的图像和后向图像进行该图像的预测编码 ，这是将来。 当根据上述双向图像执行编码时，该方法执行场间运动预测，其将单元视为将宏块中的每个图像划分为奇数或偶数像素扫描的场 该帧的行，并且作为预测模式，在使用来自一场的前向场运动矢量的预测和使用来自用于另一场的后场运动矢量的预测之间选择性地切换图像单位，生成对应于 并且使用所生成的预测图像对输入信号进行编码。