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公开(公告)号：US5841474A
公开(公告)日：1998-11-24
申请号：US559488
申请日：1995-11-15
IPC分类号： G06T9/00 , G11B27/032 , G11B27/034 , G11B27/036 , G11B27/28 , H04N5/00 , H04N5/7826 , H04N5/926 , H04N5/928 , H04N7/24 , H04N7/26 , H04N7/36 , H04N7/46 , H04N7/50 , H04N7/52 , H04N9/804 , H04N9/806 , H04N9/83 , H04N9/835 , H04N1/36
CPC分类号： G11B27/032 , G11B27/036 , G11B27/28 , H04N19/105 , H04N19/114 , H04N19/137 , H04N19/142 , H04N19/146 , H04N19/172 , H04N19/177 , H04N19/179 , H04N19/42 , H04N19/46 , H04N19/503 , H04N19/577 , H04N19/61 , H04N19/87 , H04N21/23418 , H04N21/23424 , H04N21/236 , H04N21/2383 , H04N21/4135 , H04N21/4334 , H04N21/434 , H04N21/4382 , H04N21/44016 , H04N5/9262 , H04N5/9264 , H04N9/8042 , G11B2220/20 , G11B2220/90 , G11B27/034 , H04N19/107 , H04N19/152 , H04N5/78263 , H04N5/78266 , H04N5/928 , H04N9/8063 , H04N9/83 , H04N9/835 , H04N9/8355
摘要： In a high-efficiency encoder which performs motion-compensation prediction, an intra-field is set every n fields. The presence of a scene change is detected. When a scene change occurs, a reference picture of motion-compensation prediction is switched, or the field immediately after the scene change is set as an intra-field.
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32.发明授权
公开(公告)号：US5488482A
公开(公告)日：1996-01-30
申请号：US30538
申请日：1993-03-12
IPC分类号： G06T9/00 , G11B27/032 , G11B27/036 , G11B27/28 , H04N5/7826 , H04N5/926 , H04N5/928 , H04N7/24 , H04N7/26 , H04N7/36 , H04N7/46 , H04N7/50 , H04N7/52 , H04N9/804 , H04N9/806 , H04N9/83 , H04N9/835 , H04N5/917
CPC分类号： H04N9/8042 , G11B27/032 , G11B27/036 , G11B27/28 , H04N19/105 , H04N19/114 , H04N19/137 , H04N19/142 , H04N19/177 , H04N19/179 , H04N19/42 , H04N19/46 , H04N19/503 , H04N19/577 , H04N19/61 , H04N19/87 , H04N5/9262 , H04N5/9264 , G11B2220/20 , G11B2220/90 , H04N19/107 , H04N19/146 , H04N19/152 , H04N5/78263 , H04N5/78266 , H04N5/928 , H04N9/8063 , H04N9/83 , H04N9/8355
摘要： In a high-efficiency encoder which performs motion-compensation prediction, an intra-field is set every n fields. The presence of a scene change is detected. When a scene change occurs, a reference picture of motion-compensation prediction is switched, or the field immediately after the scene change is set as an intra-field. In intra encoding mode, a digital video signal is encoded after dividing the digital video signal into subbands, and in predictive encoding mode, the digital video signal is encoded without dividing it into subbands.
摘要翻译： 在执行运动补偿预测的高效编码器中，每n个场设定场内场。 检测到场景变化的存在。 当发生场景变化时，切换运动补偿预测的参考图像，或将场景改变之后的场设置为场内。 在帧内编码模式中，数字视频信号在将数字视频信号划分成子带之后被编码，并且在预测编码模式中，数字视频信号被编码而不将其划分成子带。
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33.发明授权公开(公告)号：US07688892B2
公开(公告)日：2010-03-30
申请号：US11929098
申请日：2007-10-30
CPC分类号： H04N9/8042 , G11B20/00007 , G11B27/005 , G11B27/032 , G11B27/036 , G11B27/28 , G11B2220/20 , G11B2220/90 , G11B2220/91 , H04N5/78263 , H04N5/78266 , H04N5/9262 , H04N5/9264 , H04N5/928 , H04N7/012 , H04N9/8063 , H04N9/83 , H04N9/8355 , H04N19/105 , H04N19/107 , H04N19/114 , H04N19/115 , H04N19/136 , H04N19/137 , H04N19/142 , H04N19/172 , H04N19/177 , H04N19/179 , H04N19/18 , H04N19/42 , H04N19/46 , H04N19/503 , H04N19/577 , H04N19/61 , H04N19/87
摘要： In a high-efficiency encoder which performs motion-compensation prediction, an intra-field is set every n fields. The presence of a scene change is detected. When a scene change occurs, a reference picture of motion-compensation prediction is switched, or the field immediately after the scene change is set as an intra-field.
摘要翻译： 在执行运动补偿预测的高效编码器中，每n个场设定场内场。 检测到场景变化的存在。 当发生场景变化时，切换运动补偿预测的参考图像，或将场景改变之后的场设置为场内。
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公开(公告)号：US20080069208A1
公开(公告)日：2008-03-20
申请号：US11929175
申请日：2007-10-30
CPC分类号： H04N9/8042 , G11B20/00007 , G11B27/005 , G11B27/032 , G11B27/036 , G11B27/28 , G11B2220/20 , G11B2220/90 , G11B2220/91 , H04N5/78263 , H04N5/78266 , H04N5/9262 , H04N5/9264 , H04N5/928 , H04N7/012 , H04N9/8063 , H04N9/83 , H04N9/8355 , H04N19/105 , H04N19/107 , H04N19/114 , H04N19/115 , H04N19/136 , H04N19/137 , H04N19/142 , H04N19/172 , H04N19/177 , H04N19/179 , H04N19/18 , H04N19/42 , H04N19/46 , H04N19/503 , H04N19/577 , H04N19/61 , H04N19/87
摘要： In a high-efficiency encoder which performs motion-compensation prediction, an intra-field is set every n fields. The presence of a scene change is detected. When a scene change occurs, a reference picture of motion-compensation prediction is switched, or the field immediately after the scene change is set as an intra-field.
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35.发明授权公开(公告)号：US07336708B2
公开(公告)日：2008-02-26
申请号：US10372212
申请日：2003-02-25
CPC分类号： H04N9/8042 , G11B20/00007 , G11B27/005 , G11B27/032 , G11B27/036 , G11B27/28 , G11B2220/20 , G11B2220/90 , G11B2220/91 , H04N5/78263 , H04N5/78266 , H04N5/9262 , H04N5/9264 , H04N5/928 , H04N7/012 , H04N9/8063 , H04N9/83 , H04N9/8355 , H04N19/105 , H04N19/107 , H04N19/114 , H04N19/115 , H04N19/136 , H04N19/137 , H04N19/142 , H04N19/172 , H04N19/177 , H04N19/179 , H04N19/18 , H04N19/42 , H04N19/46 , H04N19/503 , H04N19/577 , H04N19/61 , H04N19/87
摘要： In a high-efficiency encoder which performs motion-compensation prediction, an intra-field is set every n fields. The presence of a scene change is detected. When a scene change occurs, a reference picture of motion-compensation prediction is switched, or the field immediately after the scene change is set as an intra-field.
摘要翻译： 在执行运动补偿预测的高效编码器中，每n个场设定场内场。 检测到场景变化的存在。 当发生场景变化时，切换运动补偿预测的参考图像，或将场景改变之后的场设置为场内。
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36.发明授权
公开(公告)号：US5909252A
公开(公告)日：1999-06-01
申请号：US113287
申请日：1998-07-10
IPC分类号： G06T9/00 , G11B27/032 , G11B27/034 , G11B27/036 , G11B27/28 , H04N5/00 , H04N5/7826 , H04N5/926 , H04N5/928 , H04N7/24 , H04N7/26 , H04N7/36 , H04N7/46 , H04N7/50 , H04N7/52 , H04N9/804 , H04N9/806 , H04N9/83 , H04N9/835
CPC分类号： G11B27/032 , G11B27/036 , G11B27/28 , H04N19/105 , H04N19/114 , H04N19/137 , H04N19/142 , H04N19/146 , H04N19/172 , H04N19/177 , H04N19/179 , H04N19/42 , H04N19/46 , H04N19/503 , H04N19/577 , H04N19/61 , H04N19/87 , H04N21/23418 , H04N21/23424 , H04N21/236 , H04N21/2383 , H04N21/4135 , H04N21/4334 , H04N21/434 , H04N21/4382 , H04N21/44016 , H04N5/9262 , H04N5/9264 , H04N9/8042 , G11B2220/20 , G11B2220/90 , G11B27/034 , H04N19/107 , H04N19/152 , H04N5/78263 , H04N5/78266 , H04N5/928 , H04N9/8063 , H04N9/83 , H04N9/835 , H04N9/8355
摘要： In a high-efficiency encoder which performs motion-compensation prediction, an intra-field is set every n fields. The presence of a scene change is detected. When a scene change occurs, a reference picture of motion-compensation prediction is switched, or the field immediately after the scene change is set as an intra-field.
摘要翻译： 在执行运动补偿预测的高效编码器中，每n个场设定场内场。 检测到场景变化的存在。 当发生场景变化时，切换运动补偿预测的参考图像，或将场景改变之后的场设置为场内。
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公开(公告)号：US07376184B2
公开(公告)日：2008-05-20
申请号：US10286750
申请日：2002-11-04
CPC分类号： H04N9/8042 , G11B20/00007 , G11B27/005 , G11B27/032 , G11B27/036 , G11B27/28 , G11B2220/20 , G11B2220/90 , G11B2220/91 , H04N5/78263 , H04N5/78266 , H04N5/9262 , H04N5/9264 , H04N5/928 , H04N7/012 , H04N9/8063 , H04N9/83 , H04N9/8355 , H04N19/105 , H04N19/107 , H04N19/114 , H04N19/115 , H04N19/136 , H04N19/137 , H04N19/142 , H04N19/172 , H04N19/177 , H04N19/179 , H04N19/18 , H04N19/42 , H04N19/46 , H04N19/503 , H04N19/577 , H04N19/61 , H04N19/87
摘要： In a high-efficiency encoder which performs motion-compensation prediction, an intra-field is set every n fields. The presence of a scene change is detected. When a scene change occurs, a reference picture of motion-compensation prediction is switched, or the field immediately after the scene change is set as an intra-field.
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公开(公告)号：US20080069224A1
公开(公告)日：2008-03-20
申请号：US11929036
申请日：2007-10-30
IPC分类号： H04N7/26
CPC分类号： H04N9/8042 , G11B20/00007 , G11B27/005 , G11B27/032 , G11B27/036 , G11B27/28 , G11B2220/20 , G11B2220/90 , G11B2220/91 , H04N5/78263 , H04N5/78266 , H04N5/9262 , H04N5/9264 , H04N5/928 , H04N7/012 , H04N9/8063 , H04N9/83 , H04N9/8355 , H04N19/105 , H04N19/107 , H04N19/114 , H04N19/115 , H04N19/136 , H04N19/137 , H04N19/142 , H04N19/172 , H04N19/177 , H04N19/179 , H04N19/18 , H04N19/42 , H04N19/46 , H04N19/503 , H04N19/577 , H04N19/61 , H04N19/87
摘要： In a high-efficiency encoder which performs motion-compensation prediction, an intra-field is set every n fields. The presence of a scene change is detected. When a scene change occurs, a reference picture of motion-compensation prediction is switched, or the field immediately after the scene change is set as an intra-field.
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公开(公告)号：US5724097A
公开(公告)日：1998-03-03
申请号：US325100
申请日：1994-10-18
申请人： Taketoshi Hibi , Tomohiro Ueda , Satoshi Kurahashi , Ken Onishi
发明人： Taketoshi Hibi , Tomohiro Ueda , Satoshi Kurahashi , Ken Onishi
CPC分类号： H04N19/154 , H04N19/126 , H04N19/14 , H04N19/176 , H04N19/124 , H04N19/146 , H04N19/152 , H04N19/60
摘要： A video signal is divided into blocks, and an orthogonal transform is performed on each block to obtain transformed coefficients. Of the transformed coefficients thus obtained, dominant transformed coefficients are selected from a low-frequency area and a high-frequency area, and based on the dominant transformed coefficients, an evaluation value is calculated, using which value a specific pattern in the video signal is detected. Based on the specific pattern thus detected, an optimum quantization step size is decided, and the transformed coefficients are adaptively quantized, thus preventing image quality degradation.
摘要翻译： 视频信号被分成块，并对每个块执行正交变换以获得变换的系数。 在这样获得的经变换的系数中，从低频区域和高频区域选择主要变换系数，并且基于主要变换系数，计算评估值，使用哪个值，视频信号中的特定模式是 检测到。 基于如此检测的特定图案，确定最佳量化步长，并自适应量化经变换的系数，从而防止图像质量下降。
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40.发明授权公开(公告)号：US07756202B2
公开(公告)日：2010-07-13
申请号：US11929175
申请日：2007-10-30
CPC分类号： H04N9/8042 , G11B20/00007 , G11B27/005 , G11B27/032 , G11B27/036 , G11B27/28 , G11B2220/20 , G11B2220/90 , G11B2220/91 , H04N5/78263 , H04N5/78266 , H04N5/9262 , H04N5/9264 , H04N5/928 , H04N7/012 , H04N9/8063 , H04N9/83 , H04N9/8355 , H04N19/105 , H04N19/107 , H04N19/114 , H04N19/115 , H04N19/136 , H04N19/137 , H04N19/142 , H04N19/172 , H04N19/177 , H04N19/179 , H04N19/18 , H04N19/42 , H04N19/46 , H04N19/503 , H04N19/577 , H04N19/61 , H04N19/87
摘要： In a high-efficiency encoder which performs motion-compensation prediction, an intra-field is set every n fields. The presence of a scene change is detected. When a scene change occurs, a reference picture of motion-compensation prediction is switched, or the field immediately after the scene change is set as an intra-field.
摘要翻译： 在执行运动补偿预测的高效编码器中，每n个场设定场内场。 检测到场景变化的存在。 当发生场景变化时，切换运动补偿预测的参考图像，或将场景改变之后的场设置为场内。
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