基本信息:
- 专利标题： METHOD FOR EFFICIENT AND ZERO LATENCY FILTERING IN A LONG IMPULSE RESPONSE SYSTEM
- 专利标题（中）：方法有效的过滤毫不拖延地使系统与长脉冲响应
- 申请号：EP00959110.8 申请日：2000-08-25
- 公开(公告)号：EP1312164B1 公开(公告)日：2008-05-28
- 发明人： TIAN, Wenshun
- 申请人： STMicroelectronics Asia Pacific Pte Ltd
- 申请人地址： 5A, Serangoon North Avenue 5 554575 SINGAPORE SG
- 专利权人： STMicroelectronics Asia Pacific Pte Ltd
- 当前专利权人： STMicroelectronics Asia Pacific Pte Ltd
- 当前专利权人地址： 5A, Serangoon North Avenue 5 554575 SINGAPORE SG
- 代理机构： Cerbaro, Elena
- 国际公布： WO2002017486 20020228
- 主分类号： H03H17/02
- IPC分类号： H03H17/02 ; H03H17/06
摘要：
A method for long impulse response digital filtering of an input data stream, by use of a digital filtering system. Where the input data stream is divided into zero-input signals and zero-state signals. One of the zero-input signals and a corresponding impulse response of the digital filtering system is converted to the frequency domain to determine a respective zero-input response of the digital filtering system. One of the zero-state signals is convolved with a corresponding impulse response of the digital filtering system to determine a respective zero-state response of the digital filtering system, wherein at least part of the zero-input signal precedes the zero-state signal. The zero-state response of the digital filtering system is added to the zero-input response of the digital filtering system to determine the response of the digital filtering system. Apparatus for effecting this method is also disclosed.