公开(公告)号：US20020012397A1

公开(公告)日：2002-01-31

申请号：US09963303

申请日：2001-09-26

Applicant: U.S. PHILIPS CORPORATION

Inventor： Peter H.N. De With ,  Stephanus M.C. Borgers

IPC: H04N007/12

CPC classification number: H04N19/126 ,  H04N5/9264 ,  H04N19/112 ,  H04N19/124 ,  H04N19/132 ,  H04N19/60

Abstract: An encoding circuit transforms a picture signal into blocks of, for example, 8*8 coefficients, in which each block of coefficients is read motion- adaptively. In the case of motion within a sub-picture, the block of coefficients is read in such an order that the obtained series of coefficients includes, as it were, two interleaved sub-series. The first series starts with a dc component. In a first embodiment, the second series starts with the most relevant motion coefficient. In a second embodiment, two interlaced sub-fields are separately transformed and the second series also starts with a dc coefficient. As a result, the coefficients are transmitted as much as possible in their order of significance. This particularly produces the largest possible clusters of zero value coefficients. Such clusters are transmitted as one compact run-length code so that an effective bit rate reduction is achieved, also for moving pictures.

Abstract translation: 编码电路将图像信号变换为例如8×8系数的块，其中每个块系数被运动自适应地读取。 在子图像内运动的情况下，以所得到的一系列系数作为两个交错子序列的顺序读取系数块。 第一个系列以直流分量开始。 在第一实施例中，第二系列以最相关的运动系数开始。 在第二实施例中，两个隔行的子场被单独变换，第二个串也是以直流系数开始的。 结果，系数以其重要的顺序尽可能多地传输。 这特别产生了最大可能的零值系数簇。 这样的集群作为一个紧凑的游程长度代码被发送，使得实现有效的比特率降低，也用于运动图像。

公开(公告)号：US20030123557A1

公开(公告)日：2003-07-03

申请号：US10364857

申请日：2003-02-07

Applicant: U.S. PHILIPS CORPORATION

Inventor： Peter H.N. De With ,  Stephanus M.C. Borgers

IPC: H04N007/12

CPC classification number: H04N19/126 ,  H04N5/9264 ,  H04N19/112 ,  H04N19/124 ,  H04N19/132 ,  H04N19/60

Abstract: An encoding circuit transforms a picture signal into blocks of, for example, 8*8 coefficients, in which each block of coefficients is read motion- adaptively. In the case of motion within a sub-picture, the block of coefficients is read in such an order that the obtained series of coefficients includes, as it were, two interleaved sub-series. The first series starts with a dc component. In a first embodiment, the second series starts with the most relevant motion coefficient. In a second embodiment, two interlaced sub-fields are separately transformed and the second series also starts with a dc coefficient. As a result, the coefficients are transmitted as much as possible in their order of significance. This particularly produces the largest possible clusters of zero value coefficients. Such clusters are transmitted as one compact run-length code so that an effective bit rate reduction is achieved, also for moving pictures.