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    • 1. 发明授权
    • Quantization method and circuit therefor
    • 量化方法及其电路
    • US5699119A
    • 1997-12-16
    • US413831
    • 1995-03-30
    • Tae-yun ChungGyu-hwan Jung
    • Tae-yun ChungGyu-hwan Jung
    • H04N19/60G06T9/00H04B14/06H04N1/41H04N19/119H04N19/126H04N19/136H04N19/176H04N19/186H04N19/189H04N19/196H04N19/423H04N19/59H04N19/625H04N19/85H04N7/32
    • H04N19/18H04N19/105H04N19/112H04N19/115H04N19/126H04N19/137H04N19/14H04N19/172H04N19/176H04N19/61H04N19/13H04N19/146H04N19/152H04N19/91
    • In a method for quantizing a moving picture signal and a circuit therefor, the method includes the steps of calculating horizontal and vertical gradients of first pixel values in a macroblock, determining each maximum value of the horizontal and vertical gradients, classifying the moving picture signal into complexity class if the maximum value is greater than a first threshold value and into edge class if the maximum value is greater than a second threshold value and is less than a third threshold value, calculating an activity value with respect to the first pixel values in the macroblock by calculating the sum of absolute values of DCT coefficients for four blocks in the macroblock, calculating an activity normalization coefficient, using the activity value of the macroblock and an average activity value of all pixels of the same picture type; and calculating a reference quantization step size produced by a backward rate control through a forward estimation considering coding efficiency and a visual characteristic which depends on the class of the moving picture signal and the energy of DCT coefficients. Therefore, a high efficiency and high picture quality moving picture compressor can be implemented.
    • 在用于量化运动图像信号及其电路的方法中,该方法包括以下步骤:计算宏块中的第一像素值的水平和垂直梯度,确定水平和垂直梯度的每个最大值,将运动图像信号分类为 如果最大值大于第一阈值并且如果最大值大于第二阈值并且小于第二阈值并且小于第三阈值,则计算相对于第一阈值中的第一像素值的活动值 宏块,通过计算宏块中四个块的DCT系数的绝对值之和,使用宏块的活动值和相同图像类型的所有像素的平均活动值来计算活动归一化系数; 并且通过考虑编码效率的前向估计和依赖于运动图像信号的类别和DCT系数的能量的视觉特性来计算由后向速率控制产生的参考量化步长。 因此,可以实现高效率和高画质的动态图像压缩器。
    • 5. 发明授权
    • Recording medium for storing information for still picture, recording and/or reproducing method and apparatus therefor
    • 用于存储用于静止图像,记录和/或再现方法及其装置的信息的记录介质
    • US07440679B2
    • 2008-10-21
    • US10704716
    • 2003-11-12
    • Seong-jin MoonYoung-nam OhTae-yun ChungJung-suk KangPan-gie Park
    • Seong-jin MoonYoung-nam OhTae-yun ChungJung-suk KangPan-gie Park
    • H04N7/00H04N11/02H04N9/00H04N9/79H04N5/91H04N5/00G11B20/10
    • G11B27/322G11B27/034G11B27/105G11B27/329G11B2220/215G11B2220/2562H04N1/212H04N1/2158H04N5/85H04N9/8042H04N9/8063H04N9/8205Y10S707/914Y10S707/915Y10S707/99945
    • A recording medium for storing information for still pictures, and a recording and/or reproducing method and apparatus therefor. A writeable and rewriteable recording medium stores data for a plurality of still pictures and audio data added thereto in one file or a space having a logically one-dimensional order, rather than in each file, and still picture group information for separating the still picture data into within a predetermined maximum number of groups in order to manage the still pictures at a group level is then stored on the recording medium. Thus, large-capacity still picture data and audio data added thereto can be recorded and/or reproduced using a minimum amount of information. The still picture group information includes general information for still picture groups, and information for still pictures in each still picture group. The general information for each still picture group includes the start position of a first still picture in each still picture group (the start position of each still picture group). The information for still pictures in each still picture group includes the sizes of video data and audio data for each still picture. Therefore, effective management of information is allowed.
    • 一种用于存储静止图像的信息的记录介质及其记录和/或再现方法和装置。 可写入和可重写的记录介质将添加到其中的多个静止图像和音频数据的数据存储在一个文件中或者具有逻辑一维顺序的空间中,而不是在每个文件中,以及用于分离静止图像数据的静止图像组信息 然后存储在记录介质上,以便将组群中的静止图像管理到预定的最大数量的组内。 因此,可以使用最小量的信息来记录和/或再现大容量静态图像数据和添加到其中的音频数据。 静止图像组信息包括静止图像组的一般信息和每个静止图像组中的静止图像的信息。 每个静止图像组的一般信息包括每个静止图像组中的第一静止图像的开始位置(每个静止图像组的开始位置)。 每个静止图像组中的静止图像的信息包括每个静止图像的视频数据和音频数据的大小。 因此,信息的有效管理是允许的。
    • 6. 发明授权
    • Recording medium storing information for still picture management, recording and/or reproducing method and apparatus therefor
    • 存储用于静止图像管理,记录和/或再现方法及其装置的信息的记录介质
    • US07099566B2
    • 2006-08-29
    • US10705875
    • 2003-11-13
    • Seong-jin MoonYong-nam OhTae-yun ChungJung-suk KangPan-gie Park
    • Seong-jin MoonYong-nam OhTae-yun ChungJung-suk KangPan-gie Park
    • H04N7/06H04N5/85
    • G11B27/034G11B27/105G11B27/322G11B27/329G11B2220/215G11B2220/216G11B2220/2562H04N1/212H04N1/2158
    • A recording medium for storing information for still pictures, and a recording and/or reproducing method and apparatus therefor. A writeable and rewriteable recording medium stores data for a plurality of still pictures and audio data added thereto in one file or a space having a logically one-dimensional order, rather than in each file, and still picture group information for separating the still picture data into within a predetermined maximum number of groups in order to manage the still pictures at a group level is then stored on the recording medium. Thus, large-capacity still picture data and audio data added thereto can be recorded and/or reproduced using a minimum amount of information. The still picture group information includes general information for still picture groups, and information for still pictures in each still picture group. The general information for each still picture group includes the start position of a first still picture in each still picture group (the start position of each still picture group). The information for still pictures in each still picture group includes the sizes of video data and audio data for each still picture. Therefore, effective management of information is allowed.
    • 一种用于存储静止图像的信息的记录介质及其记录和/或再现方法和装置。 可写入和可重写的记录介质将添加到其中的多个静止图像和音频数据的数据存储在一个文件中或者具有逻辑一维顺序的空间中,而不是在每个文件中,以及用于分离静止图像数据的静止图像组信息 然后存储在记录介质上,以便将组群中的静止图像管理到预定的最大数量的组内。 因此,可以使用最小量的信息来记录和/或再现大容量静态图像数据和添加到其中的音频数据。 静止图像组信息包括静止图像组的一般信息和每个静止图像组中的静止图像的信息。 每个静止图像组的一般信息包括每个静止图像组中的第一静止图像的开始位置(每个静止图像组的开始位置)。 每个静止图像组中的静止图像的信息包括每个静止图像的视频数据和音频数据的大小。 因此,信息的有效管理是允许的。