Title:
【発明の名称】波形歪の検出回路
Document Type and Number:
Japanese Patent JP2861282
Kind Code:
B2
Abstract:
A circuit for detecting a wave distortion in a circuit for eliminating a ghost wave component, wherein a received video signal is applied to a transversal filter, a reference signal for cancelling a ghost signal (GCR signal) is taken out from an output signal from the transversal filter, a ghost wave component is picked up from the GCR signal, a signal for controlling a transmission characteristic of the transversal filter is formed on the basis of the picked-up ghost wave component, and the control signal is applied to the transversal filter to thereby extract from the filter a video signal from which the ghost wave component is cancelled. This circuit includes a variable limiter provided on a signal line for transmitting the control signal to the transversal filter and an unit for controlling a limiter level of the variable limiter to be decreased with time.
Inventors:
KOBAYASHI SATOSHI
SAITO JUNYA
KUME TSUTOMU
NAGAMINE TAKAARI
SAITO JUNYA
KUME TSUTOMU
NAGAMINE TAKAARI
Application Number:
JP15471490A
Publication Date:
February 24, 1999
Filing Date:
June 13, 1990
Export Citation:
Assignee:
SONII KK
International Classes:
H03H15/00; H03H17/00; H03H17/02; H03H21/00; H04B3/04; H04B3/23; H04N5/21; (IPC1-7): H04N5/21; H03H15/00; H03H21/00
Attorney, Agent or Firm:
Hidekuma Matsukuma