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1. WO2004008669 - SEPARATION ADJUSTING CIRCUIT

Publication Number WO/2004/008669
Publication Date 22.01.2004
International Application No. PCT/JP2003/008226
International Filing Date 27.06.2003
Chapter 2 Demand Filed 05.12.2003
IPC
H04B 1/16 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/-H04B13/123; Details of transmission systems not characterised by the medium used for transmission
06Receivers
16Circuits
CPC
H04B 1/1646
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
06Receivers
16Circuits
1646adapted for the reception of stereophonic signals
H04B 1/1661
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
06Receivers
16Circuits
1646adapted for the reception of stereophonic signals
1661Reduction of noise by manipulation of the baseband composite stereophonic signal or the decoded left and right channels
H04B 1/1676
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
06Receivers
16Circuits
1646adapted for the reception of stereophonic signals
1661Reduction of noise by manipulation of the baseband composite stereophonic signal or the decoded left and right channels
1669of the demodulated composite stereo signal
1676of the sum or difference signal
H04H 40/63
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
HBROADCAST COMMUNICATION
40Arrangements specially adapted for receiving broadcast information
18Arrangements characterised by circuits or components specially adapted for receiving
27specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
36specially adapted for stereophonic broadcast receiving
45for FM stereophonic broadcast systems receiving
63for separation improvements or adjustments
Applicants
  • KABUSHIKI KAISHA TOYOTA JIDOSHOKKI [JP]/[JP] (AllExceptUS)
  • NIIGATA SEIMITSU CO., LTD. [JP]/[JP] (AllExceptUS)
  • KOIKE, Tsuyoshi [JP]/[JP] (UsOnly)
  • MIYAGI, Hiroshi [JP]/[JP] (UsOnly)
Inventors
  • KOIKE, Tsuyoshi
  • MIYAGI, Hiroshi
Agents
  • OSUGA, Yoshiyuki
Priority Data
2002-20358512.07.2002JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) SEPARATION ADJUSTING CIRCUIT
(FR) CIRCUIT D'ADAPTATION DE SEPARATION
(JA) セパレーション調整回路
Abstract
(EN)
The current value of the current flowing through a transistor (23) of a current mirror circuit for extracting an L-R component signal from a stereo composite signal is adjusted according to a control signal generated by a control circuit (25).
(FR)
L'invention concerne un circuit de commande (25) qui génère un signal de commande permettant de régler l'intensité du courant circulant dans un transistor (23) d'un circuit miroir permettant d'extraire une composante G-D à partir d'un signal stéréo composite.
(JA)
ステレオコンポジット信号からL−R成分信号を取り出すカレントミラー回路のトランジスタ(23)に流れる電流の電流量を制御回路(25)が生成する制御信号に基づいて調整する。
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