Title:
周波数フィルタの補正回路
Document Type and Number:
Japanese Patent JP2005510932
Kind Code:
A
Abstract:
The invention relates to a compensation circuit for filters of a video signal receiver. To compensate a non-linear amplification of a small signal in dependence upon the control of a large signal which is superimposed on the small signal, the invention proposes to detect the control of the large signal and to vary the working point of the filter in dependence upon the control of the large signal. Since the filter amplifies the small signal differently in dependence upon the position of the working point, the non-linearity of the filter can thereby be compensated.
Inventors:
Joachim, Burilka
Accelerator, cutner
Accelerator, cutner
Application Number:
JP2003548397A
Publication Date:
April 21, 2005
Filing Date:
November 25, 2002
Export Citation:
Assignee:
Koninklijke Philips Electronics N.V.
International Classes:
H03F3/45; H03H7/01; H03M1/12; H04N5/44; H04N7/01; H04N9/64; H04N11/20; (IPC1-7): H04N5/44
Attorney, Agent or Firm:
Kenji Yoshitake
Hidetoshi Tachibana
Yasukazu Sato
Hiroshi Yoshimoto
Yasushi Kawasaki
Hidetoshi Tachibana
Yasukazu Sato
Hiroshi Yoshimoto
Yasushi Kawasaki