MX9702782A - Circuito de entrada para un sintonizador de television. - Google Patents

Circuito de entrada para un sintonizador de television.

Info

Publication number
MX9702782A
MX9702782A MX9702782A MX9702782A MX9702782A MX 9702782 A MX9702782 A MX 9702782A MX 9702782 A MX9702782 A MX 9702782A MX 9702782 A MX9702782 A MX 9702782A MX 9702782 A MX9702782 A MX 9702782A
Authority
MX
Mexico
Prior art keywords
input circuit
television tuner
image
diode
circuit including
Prior art date
Application number
MX9702782A
Other languages
English (en)
Other versions
MXPA97002782A (es
Inventor
Tsutomu Kunishima
Original Assignee
Alps Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alps Electric Co Ltd filed Critical Alps Electric Co Ltd
Publication of MXPA97002782A publication Critical patent/MXPA97002782A/es
Publication of MX9702782A publication Critical patent/MX9702782A/es

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details 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
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/26—Circuits for superheterodyne receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/50—Tuning indicators; Automatic tuning control
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/12—Bandpass or bandstop filters with adjustable bandwidth and fixed centre frequency
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1708—Comprising bridging elements, i.e. elements in a series path without own reference to ground and spanning branching nodes of another series path
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/175—Series LC in series path
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/1758—Series LC in shunt or branch path
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/16—Tuning without displacement of reactive element, e.g. by varying permeability
    • H03J3/18—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance
    • H03J3/185—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance with varactors, i.e. voltage variable reactive diodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details 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
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Noise Elimination (AREA)

Abstract

Un circuito de entrada para un sintonizador de television incluye un circuito de trampa de imagen en el cual un circuito en serie que incluye un capacitor de trampa de imagen y un segundo diodo varactor está conectado en paralelo a un circuito en serie que incluye un inductor de sintonizacion y un primer diodo varactor; un voltaje comun para sintonizacion se aplica al primer y segundo diodos varactores por lo que sus capacitancias cambian, por lo cual la frecuencia resonante y la frecuencia de trampa de imagen cambia.
MX9702782A 1996-04-17 1997-04-16 Circuito de entrada para un sintonizador de television. MX9702782A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8095487A JPH09284157A (ja) 1996-04-17 1996-04-17 テレビジョンチューナの入力回路
JP8-95487 1996-04-17

Publications (2)

Publication Number Publication Date
MXPA97002782A MXPA97002782A (es) 1998-04-01
MX9702782A true MX9702782A (es) 1998-04-30

Family

ID=14138970

Family Applications (1)

Application Number Title Priority Date Filing Date
MX9702782A MX9702782A (es) 1996-04-17 1997-04-16 Circuito de entrada para un sintonizador de television.

Country Status (6)

Country Link
JP (1) JPH09284157A (es)
KR (1) KR100243838B1 (es)
CN (1) CN1164795A (es)
DE (1) DE19715956C2 (es)
GB (1) GB2312345A (es)
MX (1) MX9702782A (es)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3592160B2 (ja) 1999-11-25 2004-11-24 アルプス電気株式会社 チューナの複同調回路
US7319497B2 (en) * 2002-02-01 2008-01-15 Nxp B.V. Printed circuit board configurable television tuner
JP3675438B2 (ja) * 2002-10-31 2005-07-27 松下電器産業株式会社 高周波受信装置
JP3096170U (ja) * 2003-02-27 2003-09-05 アルプス電気株式会社 テレビジョンチューナの入力回路
JP3097064U (ja) * 2003-04-09 2004-01-15 アルプス電気株式会社 入力同調回路
DE10330449B3 (de) * 2003-07-05 2005-02-24 Daimlerchrysler Ag Nockenwellenversteller
JP2008544600A (ja) * 2005-06-09 2008-12-04 テレフオンアクチーボラゲット エル エム エリクソン（パブル） 同調可能な回路構成とそのような回路構成を提供する方法
CN101179677B (zh) * 2006-11-08 2011-12-14 奇景光电股份有限公司 电视调谐器与其制造方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6352510A (ja) * 1986-08-22 1988-03-05 Toshiba Corp 電子同調チユ−ナ
US4835608A (en) * 1988-05-31 1989-05-30 Zenith Electronics Corporation Image trap filter circuit
JPH0352323A (ja) * 1989-07-19 1991-03-06 Matsushita Electric Ind Co Ltd 電子チューナ
US5054117A (en) * 1989-08-01 1991-10-01 Zenith Electronics Corporation Tunable UHF filter for switchable VHF/UHF receiver
JP3053150B2 (ja) * 1993-02-26 2000-06-19 アルプス電気株式会社 Ｔｖチューナの入力同調回路

Also Published As

Publication number Publication date
DE19715956A1 (de) 1997-11-06
CN1164795A (zh) 1997-11-12
KR100243838B1 (ko) 2000-02-01
GB2312345A (en) 1997-10-22
DE19715956C2 (de) 2003-08-14
JPH09284157A (ja) 1997-10-31
GB9707390D0 (en) 1997-05-28
KR970073038A (ko) 1997-11-07

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