Title:
【発明の名称】適応等化器
Document Type and Number:
Japanese Patent JP3366803
Kind Code:
B2
Abstract:
An adaptive equalizer performs adaptive signal processing on an input digital signal passing through a transfer path so as to minimize an equalization error and sends out a digital signal obtained by the adaptive signal processing. This adaptive equalizer comprises: a variable coefficient filter for performing a filtering process on the input digital signal based on a coefficient set therein; an error detection system for detecting the equalization error; and a coefficient control section for controlling the coefficient based on the equalization error. The coefficient control section includes: a discrimination circuit for discriminating if an absolute value of each sample value of the input digital signal is greater than a predetermined value; and a coefficient generating section for, when the absolute value is discriminated as greater than the predetermined value by the discrimination means, generating the coefficient based on a value obtained by giving a sign according to the sign of that sample value to the equalization error. This adaptive equalizer contributes to reducing the circuit scale while maintaining a high data transfer efficiency.
Inventors:
Yuki Kuribayashi
Application Number:
JP13389596A
Publication Date:
January 14, 2003
Filing Date:
May 28, 1996
Export Citation:
Assignee:
Pioneer Corporation
International Classes:
H03H17/02; H03H21/00; H04B3/06; (IPC1-7): H04B3/06; H03H21/00
Domestic Patent References:
| JP4921579A | ||||
| JP4207708A | ||||
| JP57190411A | ||||
| JP8274818A | ||||
| JP324823A |
Other References:
宮鍋 庄悟，栗林 祐基，山本薫，“クロストークキャンセラを用いた高密度再生システム”，ＰＩＯＮＥＥＲ Ｒ＆Ｄ，１９９８年 ９月３０日，Ｖｏｌ．８，Ｎｏ．２，ｐｐ．２９−３７
Attorney, Agent or Firm:
Motohiko Fujimura