公开(公告)号：US20150103893A1

公开(公告)日：2015-04-16

申请号：US14578304

申请日：2014-12-19

Applicant: Cisco Technology, Inc.

Inventor： Wen-hsiung Chen ,  Yian Xu

IPC: H04N19/91 ,  H04N19/60 ,  H04N19/124

CPC classification number: H04N19/91 ,  H03M7/40 ,  H04N19/124 ,  H04N19/13 ,  H04N19/134 ,  H04N19/176 ,  H04N19/46 ,  H04N19/60

Abstract: Classifying a series of quantized transform coefficients of a block of image data into one of a pre-defined plurality of classes for entropy coding, and entropy coding the block. A class is defined by at least the size of the block and typically but not necessarily one or more other factors. The classified series is coded by one of a set of pre-defined entropy coding methods, e.g., variable length coding methods for the pre-defined classes.

Abstract translation: 将图像数据块的一系列量化变换系数分类为用于熵编码的预定义多个类中的一个，以及对该块进行熵编码。 一个类至少由块的大小定义，通常但不一定是一个或多个其他因素。 分类序列由一组预定义熵编码方法中的一种编码，例如用于预定义类的可变长度编码方法。

公开(公告)号：US09338478B2

公开(公告)日：2016-05-10

申请号：US14578304

申请日：2014-12-19

Applicant: Cisco Technology, Inc.

Inventor： Wen-hsiung Chen ,  Yian Xu

IPC: H04N19/176 ,  H04N19/91 ,  H03M7/40 ,  H04N19/46 ,  H04N19/13 ,  H04N19/134 ,  H04N19/124 ,  H04N19/60

CPC classification number: H04N19/91 ,  H03M7/40 ,  H04N19/124 ,  H04N19/13 ,  H04N19/134 ,  H04N19/176 ,  H04N19/46 ,  H04N19/60

Abstract: Classifying a series of quantized transform coefficients of a block of image data into one of a pre-defined plurality of classes for entropy coding, and entropy coding the block. A class is defined by at least the size of the block and typically but not necessarily one or more other factors. The classified series is coded by one of a set of pre-defined entropy coding methods, e.g., variable length coding methods for the pre-defined classes.