公开(公告)号：US09276560B2

公开(公告)日：2016-03-01

申请号：US14022971

申请日：2013-09-10

Applicant: LSI Corporation

Inventor： James A. Bailey ,  Robert K. Chen ,  Richard T. Kaul

IPC: G06F17/10 ,  H03H17/02 ,  G11B20/10 ,  H03H11/04

CPC classification number: H03H17/0248 ,  G11B20/10009 ,  G11B20/10027 ,  G11B20/10046 ,  G11B2220/2516 ,  H03H11/0472 ,  H03H2210/012 ,  H03H2210/015 ,  H03H2210/021

Abstract: Various embodiments of the present invention provide systems and methods for data filter tuning. As an example, a method for filter tuning is disclosed that includes: providing a tunable filter having an operation filter and a calibration filter; applying a low frequency test input to the operation filter in place of an input signal to yield a first filter output; calculating a low frequency magnitude value corresponding to the first filter output; applying a high frequency test input to the operation filter in place of an input signal to yield a second filter output; calculating a high frequency magnitude value corresponding to the second filter output; modifying a tuning factor of the calibration filter when a ratio of the high frequency magnitude value and the low frequency magnitude value is outside of a defined range; and storing the tuning factor of the calibration filter when the ratio of the high frequency magnitude value and the low frequency magnitude value is within the defined range.

公开(公告)号：US20140012888A1

公开(公告)日：2014-01-09

申请号：US14022971

申请日：2013-09-10

Applicant: LSI Corporation

Inventor： James A. Bailey ,  Robert K. Chen ,  Richard T. Kaul

IPC: H03H17/02

CPC classification number: H03H17/0248 ,  G11B20/10009 ,  G11B20/10027 ,  G11B20/10046 ,  G11B2220/2516 ,  H03H11/0472 ,  H03H2210/012 ,  H03H2210/015 ,  H03H2210/021

Abstract: Various embodiments of the present invention provide systems and methods for data filter tuning. As an example, a method for filter tuning is disclosed that includes: providing a tunable filter having an operation filter and a calibration filter; applying a low frequency test input to the operation filter in place of an input signal to yield a first filter output; calculating a low frequency magnitude value corresponding to the first filter output; applying a high frequency test input to the operation filter in place of an input signal to yield a second filter output; calculating a high frequency magnitude value corresponding to the second filter output; modifying a tuning factor of the calibration filter when a ratio of the high frequency magnitude value and the low frequency magnitude value is outside of a defined range; and storing the tuning factor of the calibration filter when the ratio of the high frequency magnitude value and the low frequency magnitude value is within the defined range.

Abstract translation: 本发明的各种实施例提供了用于数据滤波器调谐的系统和方法。 作为示例，公开了一种用于滤波器调谐的方法，其包括：提供具有操作滤波器和校准滤波器的可调谐滤波器; 将低频测试输入施加到操作滤波器来代替输入信号以产生第一滤波器输出; 计算对应于第一滤波器输出的低频幅度值; 将高频测试输入代替输入信号施加到操作滤波器以产生第二滤波器输出; 计算对应于第二滤波器输出的高频幅度值; 当所述高频幅度值和所述低频幅度值的比率超出限定范围时，修改所述校准滤波器的调谐因子; 并且当所述高频幅度值和所述低频幅度值的比率在所述限定范围内时，存储所述校准滤波器的调谐系数。