公开(公告)号：US20120179734A1

公开(公告)日：2012-07-12

申请号：US13496711

申请日：2010-07-09

Applicant: Euee S. Jang ,  Kiho Choi ,  Sunyoung Lee ,  Sikyoung Kim

Inventor： Euee S. Jang ,  Kiho Choi ,  Sunyoung Lee ,  Sikyoung Kim

IPC: G06F17/14 ,  G06F1/03

CPC classification number: G06F17/147 ,  H04N19/625

Abstract: Discrete cosine transform/inverse discrete cosine transform method and device are provided. The discrete cosine transform/inverse discrete cosine transform method includes: generating a table index for only an input value other than 0 (zero) out of input values of coordinates in an input block;reading one or more partial values corresponding to the table index out of a plurality of table information pieces which are generated and stored in advance so as to include partial values corresponding to a multiplication of a weight value and an index; and adding the read partial value and calculating the resultant value of each coordinate in an output block. Accordingly, it is possible to perform a fast DCT/IDCT operation and to reduce the energy consumption for the transform.

Abstract translation: 提供离散余弦变换/逆离散余弦变换方法和装置。 离散余弦变换/逆离散余弦变换方法包括：仅在输入块中的坐标的输入值之外生成除了0（零）之外的输入值的表索引; 从预先生成和存储的多个表信息中读出与表索引相对应的一个或多个部分值，以便包括对应于权重值和索引的乘法的部分值; 并添加读取的部分值并计算输出块中每个坐标的结果值。 因此，可以执行快速DCT / IDCT操作并且减少变换的能量消耗。

公开(公告)号：US09311275B2

公开(公告)日：2016-04-12

申请号：US13496711

申请日：2010-07-09

Applicant: Euee S Jang ,  Kiho Choi ,  Sunyoung Lee ,  Sikyoung Kim

Inventor： Euee S Jang ,  Kiho Choi ,  Sunyoung Lee ,  Sikyoung Kim

IPC: G06F17/14 ,  H04N19/625

CPC classification number: G06F17/147 ,  H04N19/625

Abstract: Discrete cosine transform/inverse discrete cosine transform method and device are provided. The discrete cosine transform/inverse discrete cosine transform method includes: generating a table index for only an input value other than 0 (zero) out of input values of coordinates in an input block; reading one or more partial values corresponding to the table index out of a plurality of table information pieces which are generated and stored in advance so as to include partial values corresponding to a multiplication of a weight value and an index; and adding the read partial value and calculating the resultant value of each coordinate in an output block. Accordingly, it is possible to perform a fast DCT/IDCT operation and to reduce the energy consumption for the transform.

Abstract translation: 提供离散余弦变换/逆离散余弦变换方法和装置。 离散余弦变换/逆离散余弦变换方法包括：仅在输入块中的坐标的输入值之外生成除了0（零）之外的输入值的表索引; 从预先生成和存储的多个表信息中读出与表索引相对应的一个或多个部分值，以便包括对应于权重值和索引的乘法的部分值; 并添加读取的部分值并计算输出块中每个坐标的结果值。 因此，可以执行快速DCT / IDCT操作并且减少变换的能量消耗。