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公开(公告)号：US09451250B2
公开(公告)日：2016-09-20
申请号：US14044612
申请日：2013-10-02
Applicant: Broadcom Corporation
Inventor： Alexander Garland MacInnis , Frederick George Walls
IPC: H04N7/12 , H04N11/02 , H04N11/04 , H04N19/152 , H04N19/149 , H04N19/124 , H04N19/174
CPC classification number: H04N19/152 , H04N19/124 , H04N19/149 , H04N19/174
Abstract: A system implements rate control for encoding and decoding operations, for example, operations performed on slices of data such as image data. The system implements a transformation from actual buffer fullness to rate controlled fullness. With the rate controlled fullness model, the encoders and decoders adapt bit allocation responsive to rate controlled fullness, instead of the actual fullness.
Abstract translation: 系统实现用于编码和解码操作的速率控制，例如对诸如图像数据的数据片执行的操作。 系统实现从实际缓冲区丰满度到速率控制丰度的转换。 利用速率控制丰度模型，编码器和解码器可以根据速率控制的丰满度来适应位分配，而不是实际的丰满度。
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公开(公告)号：US09363517B2
公开(公告)日：2016-06-07
申请号：US14182172
申请日：2014-02-17
Applicant: Broadcom Corporation
Inventor： Alexander Garland MacInnis , Frederick George Walls
IPC: G06K9/00 , H04N19/103 , H04N19/593 , H04N19/154 , H04N19/182 , H04N19/94
CPC classification number: H04N19/94 , H04N19/103 , H04N19/154 , H04N19/182 , H04N19/593
Abstract: An encoder may implement an indexed color history that stores color values for previously encoded pixels. The encoder may obtain a current pixel or current group of pixels for encoding and determine whether to encode the current pixel using the indexed color history. In doing so, the encoder may compare a color value of the current pixel with color values of the previously coded pixels to determine whether the current pixel is sufficiently similar to a previously coded pixel color value, e.g., by satisfying one or more similarity criteria. When the similarity criteria are satisfied, the encoder may encode the current pixel as an index value referencing the entry in the indexed color history storing a color value that satisfies the similarity criteria. When the similarity criteria are not satisfied, the encoder may encode the current pixel using another encoding method or technique.
Abstract translation: 编码器可以实现索引的颜色历史，其存储先前编码的像素的颜色值。 编码器可以获得用于编码的当前像素或当前像素组，并且使用索引的颜色历史来确定是否对当前像素进行编码。 在这样做时，编码器可以将当前像素的颜色值与先前编码像素的颜色值进行比较，以确定当前像素是否与先前编码的像素颜色值充分相似，例如通过满足一个或多个相似性标准。 当满足相似性标准时，编码器可以将当前像素编码为参考存储满足相似性标准的颜色值的索引色历中的条目的索引值。 当不满足相似性标准时，编码器可以使用另一种编码方法或技术对当前像素进行编码。
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公开(公告)号：US09978156B2
公开(公告)日：2018-05-22
申请号：US14222004
申请日：2014-03-21
Applicant: Broadcom Corporation
IPC: G09G5/36 , G06T9/00 , H04N19/14 , H04N19/152 , H04N19/103 , H04N19/186 , H04N19/80
CPC classification number: G06T9/00 , H04N19/103 , H04N19/14 , H04N19/152 , H04N19/186 , H04N19/80
Abstract: A system implements multiple coding formats for coding pixels within a picture. The formats may be selected based on one or more of the input picture and encoding variables. The coding formats may have varying chroma sampling densities. Filtering may be applied to convert among the various formats or to convert a sampled input to a specific chroma sampling density. The format associated with various groups within a coded bitstream may be changed to adapt to evolution of the one or more variables or inputs.
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公开(公告)号：US20160269755A1
公开(公告)日：2016-09-15
申请号：US15164222
申请日：2016-05-25
Applicant: Broadcom Corporation
Inventor： Alexander Garland MacInnis , Frederick George Walls
IPC: H04N19/94 , H04N19/593 , H04N19/182 , H04N19/103 , H04N19/154
CPC classification number: H04N19/94 , H04N19/103 , H04N19/154 , H04N19/182 , H04N19/593
Abstract: Coding circuitry may implement an indexed set of color values that stores color values for a neighbor pixel group. The coding circuitry may obtain a current pixel group for coding. The coding circuitry may code the current pixel group using the indexed set of color values when an indication that there is a compression advantage to coding using the indexed set of color values is present within an input stream. When the indication is not present, the coding circuitry may code the current pixel group using another coding technique.
Abstract translation: 编码电路可以实现存储相邻像素组的颜色值的索引的一组颜色值。 编码电路可以获得用于编码的当前像素组。 编码电路可以使用索引的颜色值集合来编码当前像素组，当在输入流内存在使用索引的颜色值集合进行编码时具有压缩优势的指示。 当指示不存在时，编码电路可以使用另一编码技术对当前像素组进行编码。
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公开(公告)号：US20140247983A1
公开(公告)日：2014-09-04
申请号：US14222004
申请日：2014-03-21
Applicant: Broadcom Corporation
IPC: G06T9/00
CPC classification number: G06T9/00 , H04N19/103 , H04N19/14 , H04N19/152 , H04N19/186 , H04N19/80
Abstract: A system implements multiple coding formats for coding pixels within a picture. The formats may be selected based on one or more of the input picture and encoding variables. The coding formats may have varying chroma sampling densities. Filtering may be applied to convert among the various formats or to convert a sampled input to a specific chroma sampling density. The format associated with various groups within a coded bitstream may be changed to adapt to evolution of the one or more variables or inputs.
Abstract translation: 系统实现用于编码图像内的像素的多种编码格式。 可以基于输入图像和编码变量中的一个或多个选择格式。 编码格式可以具有不同的色度采样密度。 可以应用滤波以在各种格式之间进行转换，或者将采样输入转换为特定的色度采样密度。 可以改变与编码比特流内的各个组相关联的格式以适应一个或多个变量或输入的演进。
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Patent Agency Ranking
公开(公告)号：US10455230B2
公开(公告)日：2019-10-22
申请号：US14984713
申请日：2015-12-30
Applicant: Broadcom Corporation
Inventor： Frederick George Walls
IPC: H04N19/112 , H04N19/136 , H04N19/186 , H04N19/117
Abstract: A method and system for coding or decoding is disclosed. The system or method may receive a chroma subsampled picture and map the chroma subsampled picture into a non chroma subsampled format picture. The system or method may receive a non chroma subsampled picture and remap the samples into a chroma subsampled picture.
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公开(公告)号：US20140241630A1
公开(公告)日：2014-08-28
申请号：US14182172
申请日：2014-02-17
Applicant: BROADCOM CORPORATION
Inventor： Alexander Garland MacInnis , Frederick George Walls
IPC: G06T9/00
CPC classification number: H04N19/94 , H04N19/103 , H04N19/154 , H04N19/182 , H04N19/593
Abstract: An encoder may implement an indexed color history that stores color values for previously encoded pixels. The encoder may obtain a current pixel or current group of pixels for encoding and determine whether to encode the current pixel using the indexed color history. In doing so, the encoder may compare a color value of the current pixel with color values of the previously coded pixels to determine whether the current pixel is sufficiently similar to a previously coded pixel color value, e.g., by satisfying one or more similarity criteria. When the similarity criteria are satisfied, the encoder may encode the current pixel as an index value referencing the entry in the indexed color history storing a color value that satisfies the similarity criteria. When the similarity criteria are not satisfied, the encoder may encode the current pixel using another encoding method or technique.
Abstract translation: 编码器可以实现索引的颜色历史，其存储先前编码的像素的颜色值。 编码器可以获得用于编码的当前像素或当前像素组，并且使用索引的颜色历史来确定是否对当前像素进行编码。 在这样做时，编码器可以将当前像素的颜色值与先前编码像素的颜色值进行比较，以确定当前像素是否与先前编码的像素颜色值充分相似，例如通过满足一个或多个相似性标准。 当满足相似性标准时，编码器可以将当前像素编码为参考存储满足相似性标准的颜色值的索引色历中的条目的索引值。 当不满足相似性标准时，编码器可以使用另一种编码方法或技术对当前像素进行编码。
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公开(公告)号：US09813711B2
公开(公告)日：2017-11-07
申请号：US14302940
申请日：2014-06-12
Applicant: Broadcom Corporation
Inventor： Alexander Garland MacInnis , Frederick George Walls
CPC classification number: H04N19/124 , H04N19/18 , H04N19/61 , H04N19/62 , H04N19/63
Abstract: A system implements a hybrid coding mode. The hybrid coding mode may implement a transform to decompose an input stream into frequency components. The frequency components may include frequency bands such as those resulting from a wavelet transform. The frequency components may have associated coefficients which may be determined via the transform. The hybrid coding mode may also implement a predictor-based coding mode. A predictor-based coding mode uses a set of values as predictors for another set of values. The hybrid mode may be implemented by using predictor-based coding to code a portion of the coefficients. For example, a coefficient may be used as a predictor for another coefficient of same frequency component. In some implementations, dynamic selection between a hybrid coding mode and a point coding mode may be used.
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公开(公告)号：US20160205399A1
公开(公告)日：2016-07-14
申请号：US14984713
申请日：2015-12-30
Applicant: Broadcom Corporation
Inventor： Frederick George Walls
IPC: H04N19/112 , H04N19/136 , H04N19/186
CPC classification number: H04N19/112 , H04N19/117 , H04N19/136 , H04N19/186
Abstract: A method and system for coding or decoding is disclosed. The system or method may receive a chroma subsampled picture and map the chroma subsampled picture into a non chroma subsampled format picture. The system or method may receive a non chroma subsampled picture and remap the samples into a chroma subsampled picture.
Abstract translation: 公开了一种用于编码或解码的方法和系统。 系统或方法可以接收色度二次采样的图像并将色度二次采样图像映射成非色度二次采样格式图像。 系统或方法可以接收非色度二次采样图像，并将样本重新映射成色度二次采样图像。
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公开(公告)号：US20140294089A1
公开(公告)日：2014-10-02
申请号：US14302940
申请日：2014-06-12
Applicant: Broadcom Corporation
Inventor： Alexander Garland MacInnis , Frederick George Walls
CPC classification number: H04N19/124 , H04N19/18 , H04N19/61 , H04N19/62 , H04N19/63
Abstract: A system implements a hybrid coding mode. The hybrid coding mode may implement a transform to decompose an input stream into frequency components. The frequency components may include frequency bands such as those resulting from a wavelet transform. The frequency components may have associated coefficients which may be determined via the transform. The hybrid coding mode may also implement a predictor-based coding mode. A predictor-based coding mode uses a set of values as predictors for another set of values. The hybrid mode may be implemented by using predictor-based coding to code a portion of the coefficients. For example, a coefficient may be used as a predictor for another coefficient of same frequency component. In some implementations, dynamic selection between a hybrid coding mode and a point coding mode may be used.
Abstract translation: 系统实现混合编码模式。 混合编码模式可以实现将输入流分解为频率分量的变换。 频率分量可以包括诸如由小波变换产生的频带的频带。 频率分量可以具有可以经由变换确定的相关系数。 混合编码模式还可以实现基于预测器的编码模式。 基于预测器的编码模式使用一组值作为另一组值的预测器。 混合模式可以通过使用基于预测器的编码来对系数的一部分进行编码来实现。 例如，可以将系数用作相同频率分量的另一系数的预测器。 在一些实现中，可以使用混合编码模式和点编码模式之间的动态选择。
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