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1. 发明授权

US06539119B1 Picture coding apparatus and method thereof 失效
公开(公告)号：US06539119B1
公开(公告)日：2003-03-25
申请号：US09710542
申请日：2000-11-09
申请人： Tetsujiro Kondo , Yasuhiro Fujimori , Kunio Kawaguchi
发明人： Tetsujiro Kondo , Yasuhiro Fujimori , Kunio Kawaguchi
IPC分类号： G06K936
CPC分类号： H04N19/186 , H04N19/10 , H04N19/115 , H04N19/146 , H04N19/63 , H04N19/647 , H04N19/96
摘要： In a picture coding apparatus and a picture coding method, when a picture data is hierarchically coded, compression efficiency can be improved, and the deterioration of picture quality can be reduced. When a picture data is hierarchically coded by utilizing a recursive hierarchical representation, adaptive division of block is performed corresponding to the characteristic of the picture data and then coding is performed, and thus obtained hierarchical coded data is transmitted, so that the block of the lower hierarchy can be adaptively divided, thereby the information quantity such as a plane portion of picture can be reduced.

2. 发明授权

US5956089A Picture encoding apparatus, picture encoding method, picture encoding and transmitting method, and picture record medium 失效
公开(公告)号：US5956089A
公开(公告)日：1999-09-21
申请号：US879485
申请日：1997-06-19
申请人： Tetsujiro Kondo , Yasuhiro Fujimori , Kenji Takahashi , Kunio Kawaguchi
发明人： Tetsujiro Kondo , Yasuhiro Fujimori , Kenji Takahashi , Kunio Kawaguchi
IPC分类号： H04N5/85 , H04N5/926 , H04N7/26 , H04N7/32
CPC分类号： H04N19/98 , H04N5/9261 , H04N5/85 , H04N5/9264
摘要： On a decoding side, parameters (minimum value MIN and dynamic range DR) are optimized in such a manner that a decoded error of original signal values and restored values becomes minimum. A maximum value detecting portion 2 detects the maximum value MAX of pixels of each block composed of (3.times.3) pixels. Likewise, a minimum value detecting portion 3 detects the minimum value MIN. A subtracting portion 4 generates a dynamic range DR. A subtracting portion 5 subtracts MIN from each of input pixel values y and generates normalized values. A step width calculating portion 6 calculates a quantizing step width .DELTA. with DR. A quantizing portion 7 generates quantized values x (each of which is composed of 4 bits) with .DELTA.. A least squares method based estimating portion 8 generates decoded values y' with y and x and obtains an optimized dynamic range DR' and an optimized minimum value MIN' in such a manner that the sum of square of an error (y'-y) becomes minimum. A framing portion 11 frames x, DR', and MIN' and records the framed data on a record medium 15 through an error-correction-code adding portion 12, a modulating portion 13, and a recording portion 14.

3. 发明授权

US5781238A Information signal encoding apparatus, encoding method thereof, information signal decoding method, and information signal record medium thereof 失效
标题翻译：信息信号编码装置，其编码方法，信息信号解码方法及其信息信号记录介质
公开(公告)号：US5781238A
公开(公告)日：1998-07-14
申请号：US687085
申请日：1996-07-23
申请人： Tetsujiro Kondo , Yasuhiro Fujimori , Kenji Takahashi , Kunio Kawaguchi
发明人： Tetsujiro Kondo , Yasuhiro Fujimori , Kenji Takahashi , Kunio Kawaguchi
IPC分类号： G06T9/00 , H04N7/26 , H04N7/32
CPC分类号： H04N19/98
摘要： Difference signals generated in the prediction encoding process for an input digital information signal are block segmented. The maximum value and minimum value of each block are detected. In addition, a quantizing step .DELTA. is calculated. An offset detecting circuit detects a zero position flag ZR and an offset off. The zero position flag ZR represents a quantized code that includes 0. The offset off represents the deviation between value 0 of difference signals and value 0 of restored representative values. A class category adaptive predicting circuit predicts ZR and .DELTA.. These values are not transmitted in other than exception process. With predicted values ZR and .DELTA., difference signals corrected with the offset off are quantized by a quantizing circuit.
摘要翻译：在输入数字信息信号的预测编码处理中产生的差分信号被块分割。检测每个块的最大值和最小值。另外，计算量化步骤DELTA。偏移检测电路检测零位置标记ZR和偏移量。零位标志ZR表示包含0的量化码。offset off表示差分信号的值0与恢复的代表值的值0之间的偏差。类别自适应预测电路预测ZR和DELTA。除了异常处理之外，这些值不会传输。利用预测值ZR和DELTA，通过量化电路量化用偏移关闭校正的差分信号。

4. 发明授权

US06219456B1 Picture coding apparatus and method thereof 有权
公开(公告)号：US06219456B1
公开(公告)日：2001-04-17
申请号：US09315100
申请日：1999-05-19
申请人： Tetsujiro Kondo , Yasuhiro Fujimori , Kunio Kawaguchi
发明人： Tetsujiro Kondo , Yasuhiro Fujimori , Kunio Kawaguchi
IPC分类号： G06K936
CPC分类号： H04N19/186 , H04N19/10 , H04N19/115 , H04N19/146 , H04N19/63 , H04N19/647 , H04N19/96
摘要： In a picture coding apparatus and a picture coding method, when a picture data is hierarchically coded, compression efficiency can be improved, and the deterioration of picture quality can be reduced. When a picture data is hierarchically coded by utilizing a recursive hierarchical representation, adaptive division of block is performed corresponding to the characteristic of the picture data and then coding is performed, and thus obtained hierarchical coded data is transmitted, so that the block of the lower hierarchy can be adaptively divided, thereby the information quantity such as a plane portion of picture can be reduced.

5. 发明授权

US06408097B1 Picture coding apparatus and method thereof 失效
标题翻译：图像编码装置及其方法
公开(公告)号：US06408097B1
公开(公告)日：2002-06-18
申请号：US09316621
申请日：1999-05-21
申请人： Tetsujiro Kondo , Yasuhiro Fujimori , Kunio Kawaguchi
发明人： Tetsujiro Kondo , Yasuhiro Fujimori , Kunio Kawaguchi
IPC分类号： G06K936
CPC分类号： H04N19/186 , H04N19/10 , H04N19/115 , H04N19/146 , H04N19/63 , H04N19/647 , H04N19/96
摘要： In a picture coding apparatus and a picture coding method, when a picture data is hierarchically coded, compression efficiency can be improved, and the deterioration of picture quality can be reduced. When a picture data is hierarchically coded by utilizing a recursive hierarchical representation, adaptive division of block is performed corresponding to the characteristic of the picture data and then coding is performed, and thus obtained hierarchical coded data is transmitted, so that the block of the lower hierarchy can be adaptively divided, thereby the information quantity such as a plane portion of picture can be reduced.
摘要翻译：在图像编码装置和图像编码方法中，当图像数据被分层编码时，可以提高压缩效率，并且可以降低图像质量的劣化。当通过使用递归分层表示对图像数据进行分层编码时，对应于图像数据的特性执行块的自适应划分，然后执行编码，并且由此获得的分层编码数据被发送，使得较低的块可以自适应地划分层次结构，从而可以减少诸如图片的平面部分的信息量。

6. 发明授权

US06324304B1 Picture coding apparatus and method thereof 失效
标题翻译：图像编码装置及其方法
公开(公告)号：US06324304B1
公开(公告)日：2001-11-27
申请号：US09324448
申请日：1999-06-02
申请人： Tetsujiro Kondo , Yasuhiro Fujimori , Kunio Kawaguchi
发明人： Tetsujiro Kondo , Yasuhiro Fujimori , Kunio Kawaguchi
IPC分类号： G06K936
CPC分类号： H04N19/186 , H04N19/10 , H04N19/115 , H04N19/146 , H04N19/63 , H04N19/647 , H04N19/96
摘要： In a picture coding apparatus and a picture coding method, when a picture data is hierarchically coded, compression efficiency can be improved, and the deterioration of picture quality can be reduced. When a picture data is hierarchically coded by utilizing a recursive hierarchical representation, adaptive division of block is performed corresponding to the characteristic of the picture data and then coding is performed, and thus obtained hierarchical coded data is transmitted, so that the block of the lower hierarchy can be adaptively divided, thereby the information quantity such as a plane portion of picture can be reduced.
摘要翻译：在图像编码装置和图像编码方法中，当图像数据被分层编码时，可以提高压缩效率，并且可以降低图像质量的劣化。当通过使用递归分层表示对图像数据进行分层编码时，对应于图像数据的特性执行块的自适应划分，然后执行编码，并且由此获得的分层编码数据被发送，使得较低的块可以自适应地划分层次结构，从而可以减少诸如图片的平面部分的信息量。

7. 发明授权

US6014174A Picture encoding apparatus, picture encoding method, picture encoding and transmitting method, and picture record medium 失效
标题翻译：图像编码装置，图像编码方法，图像编码和发送方法以及图像记录介质
公开(公告)号：US6014174A
公开(公告)日：2000-01-11
申请号：US932712
申请日：1997-09-17
申请人： Tetsujiro Kondo , Yasuhiro Fujimori , Kenji Takahashi , Kunio Kawaguchi
发明人： Tetsujiro Kondo , Yasuhiro Fujimori , Kenji Takahashi , Kunio Kawaguchi
IPC分类号： H04N5/85 , H04N5/926 , H04N7/26 , H04N7/32
CPC分类号： H04N19/98 , H04N5/9261 , H04N5/85 , H04N5/9264
摘要： On a decoding side, parameters (minimum value MIN and dynamic range DR) are optimized in such a manner that a decoded error of original signal values and restored values becomes minimum. A maximum value detecting portion 2 detects the maximum value MAX of pixels of each block composed of (3.times.3) pixels. Likewise, a minimum value detecting portion 3 detects the minimum value MIN. A subtracting portion 4 generates a dynamic range DR. A subtracting portion 5 subtracts MIN from each of input pixel values y and generates normalized values. A step width calculating portion 6 calculates a quantizing step width .DELTA. with DR. A quantizing portion 7 generates quantized values x (each of which is composed of 4 bits) with .DELTA.. A least squares method based estimating portion 8 generates decoded values y' with y and x and obtains an optimized dynamic range DR' and an optimized minimum value MIN' in such a manner that the sum of square of an error (y'-y) becomes minimum. A framing portion 11 frames x, DR', and MIN' and records the framed data on a record medium 15 through an error-correction-code adding portion 12, a modulating portion 13, and a recording portion 14.
摘要翻译：在解码侧，参数（最小值MIN和动态范围DR）以原始信号值和恢复值的解码误差变得最小的方式进行优化。最大值检测部分2检测由（3×3）像素组成的每个块的像素的最大值MAX。同样，最小值检测部分3检测最小值MIN。减法部分4产生动态范围DR。减法部分5从每个输入像素值y中减去MIN，并产生归一化值。步长计算部6用DR计算量化步长DELTA。量化部分7产生具有DELTA的量化值x（每个由4位组成）。基于最小二乘法的估计部分8产生具有y和x的解码值y'，并且获得优化的动态范围DR'和优化的最小值MIN'，使得误差（y'-y）的平方和变得最小。成帧部分11将x，DR'和MIN'帧化，并通过纠错码添加部分12，调制部分13和记录部分14将成帧数据记录在记录介质15上。

8. 发明授权

US5870434A Apparatus and method for quantizing a digital signal based on quantizing steps including odd-numbered steps 失效
标题翻译：基于包括奇数步骤的量化步骤量化数字信号的装置和方法
公开(公告)号：US5870434A
公开(公告)日：1999-02-09
申请号：US576315
申请日：1995-12-21
申请人： Tetsujiro Kondo , Yasuhiro Fujimori , Kenji Takahashi , Kunio Kawaguchi
发明人： Tetsujiro Kondo , Yasuhiro Fujimori , Kenji Takahashi , Kunio Kawaguchi
IPC分类号： H04N7/26 , H04N7/32 , H04B14/06
CPC分类号： H04N19/98 , H04N19/124 , H04N19/50 , H04N19/63 , H04N19/115 , H04N19/146
摘要： A subtraction device subtracts a predicted value generated by a predicting portion from a digital picture signal supplied through an input terminal. The subtraction device generates a difference signal as an output signal. A quantizing portion detects an activity of the difference signal, designates the number of quantizing steps corresponding to the activity, and quantizes the difference signal with the number of quantizing steps. The quantizing portion outputs side information to an output terminal.
摘要翻译：减法装置从通过输入端子提供的数字图像信号中减去由预测部分产生的预测值。减法装置产生差分信号作为输出信号。量化部分检测差分信号的活动，指定与活动相对应的量化步骤的数量，并用量化步骤的数量量化差分信号。量化部将输出侧信息输出到输出端子。

9. 发明授权

US5841375A Information signal encoding apparatus, encoding method thereof, information signal decoding method, and information signal medium thereof 失效
标题翻译：信息信号编码装置，其编码方法，信息信号解码方法及其信息信号介质
公开(公告)号：US5841375A
公开(公告)日：1998-11-24
申请号：US21672
申请日：1998-02-10
申请人： Tetsujiro Kondo , Yasuhiro Fujimori , Kenji Takahashi , Kunio Kawaguchi
发明人： Tetsujiro Kondo , Yasuhiro Fujimori , Kenji Takahashi , Kunio Kawaguchi
IPC分类号： G06T9/00 , H04N7/26 , H03M3/00
CPC分类号： H04N19/98
摘要： Difference signals generated in the prediction encoding process for an input digital information signal are block segmented. The maximum value and minimum value of each block are detected. In addition, a quantizing step .increment. is calculated. An offset detecting circuit detects a zero position flag ZR and an offset off. The zero position flag ZR represents a quantized code that includes 0. The offset off represents the deviation between value 0 of difference signals and value 0 of restored representative values. A class category adaptive predicting circuit predicts ZR and .increment.. These values are not transmitted in other than exception process. With predicted values ZR and .increment., difference signals corrected with the offset off are quantized by a quantizing circuit.
摘要翻译：在输入数字信息信号的预测编码处理中产生的差分信号被块分割。检测每个块的最大值和最小值。另外，计算量化步骤INCREMENT。偏移检测电路检测零位置标记ZR和偏移量。零位标志ZR表示包含0的量化码。offset off表示差分信号的值0与恢复的代表值的值0之间的偏差。类别自适应预测电路预测ZR和INCREMENT。除了异常处理之外，这些值不会传输。利用预测值ZR和INCREMENT，用偏移关闭校正的差分信号通过量化电路进行量化。

10. 发明授权

US5706009A Quantizing apparatus and quantizing method 失效
标题翻译：量化装置和量化方法
公开(公告)号：US5706009A
公开(公告)日：1998-01-06
申请号：US575384
申请日：1995-12-20
申请人： Tetsujiro Kondo , Yasuhiro Fujimori , Kenji Takahashi , Kunio Kawaguchi
发明人： Tetsujiro Kondo , Yasuhiro Fujimori , Kenji Takahashi , Kunio Kawaguchi
IPC分类号： H04N7/26 , H03M3/00
CPC分类号： H04N19/98 , H04N19/63 , H04N19/115 , H04N19/146
摘要： A difference signal generated in a prediction encoding process is block-segmented by a block segmenting circuit 2. Thus, the level distribution of the block-segmented difference signal is concentrated to a narrower portion than the level distribution of one entire screen. Reference values DR and MIN of each block of the difference signal are detected. A quantizing step width .DELTA. and shift data .DELTA.S are determined corresponding to such reference values and the number of quantizing bits N. A quantizing circuit 6 quantizes the difference signal with .DELTA.. The difference signal is shifted and quantized so that the level 0 of the difference signal is obtained as 0 on the decoding side. A flag FLG and a that represent the quantized value of the level 0 are transmitted as side information along with the quantized value Q.
摘要翻译：在预测编码处理中产生的差分信号被块分割电路2块分割。因此，块分段差分信号的电平分布集中在比整个屏幕的电平分布更窄的部分。检测差信号的每个块的参考值DR和MIN。对应于这样的参考值和量化比特数N来确定量化步长DELTA和移位数据DELTA S.量化电路6用DELTA量化差分信号。差分信号被移位和量化，使得差分信号的电平0在解码侧获得为0。标记FLG和表示电平0的量化值的标志FLG作为辅助信息与量化值Q一起发送。

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