재귀형 하프밴드 필터 및 이를 이용한 필터링 방법
    1.
    发明授权
    재귀형 하프밴드 필터 및 이를 이용한 필터링 방법 有权
    回收式半带过滤器,以及使用过滤器进行FILTER的方法

    公开(公告)号:KR101315891B1

    公开(公告)日:2013-10-14

    申请号:KR1020120077774

    申请日:2012-07-17

    CPC classification number: H03H17/00 H03H11/00 H03H17/0238 H03H17/0241

    Abstract: PURPOSE: A recursive type half band filter and a filtering method using the same are provided to replace multilevel half band filter with one half band filter. CONSTITUTION: A recursive type half band filter (100) comprises a first storing part (110), a second storing part (120), a calculating part (130), and a controlling part (140). The first storing part controls first input data among a plurality of input data composed of first input data and second input data, which are sequentially repeated at least once, to be impeded prior to be stored before second input data is inputted. The second storing part stores second input data. The calculating part multiplies the second input data with a predetermined filter coefficient before adding to the first input data, which is stored at the first storing part, for producing output data. Whether the output data is predetermined final output data allows the controlling part to determine the output data as final output data or as new input data. [Reference numerals] (110) First storing part; (120) Second storing part; (130) Calculating part; (141) Input controlling part; (142) Output controlling part; (143) Calculation stage control part; (144) Address control part

    Abstract translation: 目的:提供递归型半带滤波器和使用其的滤波方法,以用一个半带滤波器代替多电平半带滤波器。 构成:递归型半带滤波器(100)包括第一存储部分(110),第二存储部分(120),计算部分(130)和控制部分(140)。 第一存储部分控制在输入第二输入数据之前被阻止的在第一输入数据和第二输入数据组成的多个输入数据中的第一输入数据,这些输入数据被顺序重复至少一次。 第二存储部存储第二输入数据。 计算部分将第二输入数据与预定的滤波器系数相乘,然后将其存储在第一存储部分处的第一输入数据相加,以产生输出数据。 输出数据是否是预定的最终输出数据允许控制部分将输出数据确定为最终输出数据或作为新的输入数据。 (附图标记)(110)第一存储部; (120)第二储存部; (130)计算部分; (141)输入控制部分; (142)输出控制部; (143)计算阶段控制部分; (144)地址控制部分

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