DE60041570D1 - Zweifach abgestimmte Schaltung mit beschränkter Selektivitätsverringerung - Google Patents

Zweifach abgestimmte Schaltung mit beschränkter Selektivitätsverringerung

Info

Publication number
DE60041570D1
DE60041570D1 DE60041570T DE60041570T DE60041570D1 DE 60041570 D1 DE60041570 D1 DE 60041570D1 DE 60041570 T DE60041570 T DE 60041570T DE 60041570 T DE60041570 T DE 60041570T DE 60041570 D1 DE60041570 D1 DE 60041570D1
Authority
DE
Germany
Prior art keywords
tuned circuit
dual tuned
limited selectivity
selectivity reduction
reduction
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
DE60041570T
Other languages
English (en)
Inventor
Masaki Yamamoto
Akira Yamamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alps Alpine Co Ltd
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
Priority claimed from JP35775199A external-priority patent/JP4014772B2/ja
Priority claimed from JP2000017952A external-priority patent/JP2001211397A/ja
Application filed by Alps Electric Co Ltd filed Critical Alps Electric Co Ltd
Application granted granted Critical
Publication of DE60041570D1 publication Critical patent/DE60041570D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/24—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
    • H03J5/242—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection used exclusively for band selection
    • H03J5/244—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection used exclusively for band selection using electronic means
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
DE60041570T 1999-12-16 2000-11-16 Zweifach abgestimmte Schaltung mit beschränkter Selektivitätsverringerung Expired - Lifetime DE60041570D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP35775199A JP4014772B2 (ja) 1999-12-16 1999-12-16 チューナの複同調回路
JP2000017952A JP2001211397A (ja) 2000-01-24 2000-01-24 高周波同調回路

Publications (1)

Publication Number Publication Date
DE60041570D1 true DE60041570D1 (de) 2009-04-02

Family

ID=26580658

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60041570T Expired - Lifetime DE60041570D1 (de) 1999-12-16 2000-11-16 Zweifach abgestimmte Schaltung mit beschränkter Selektivitätsverringerung

Country Status (5)

Country Link
US (1) US6486757B2 (de)
EP (1) EP1109312B1 (de)
KR (1) KR100362451B1 (de)
CN (1) CN1177468C (de)
DE (1) DE60041570D1 (de)

Families Citing this family (3)

* 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
JP2001223954A (ja) * 2000-02-10 2001-08-17 Alps Electric Co Ltd テレビジョンチューナの入力回路
CN106788301A (zh) * 2016-12-30 2017-05-31 陕西烽火电子股份有限公司 Vhf/uhf频段的增益电调滤波器及其通信装置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6046895B2 (ja) * 1978-08-04 1985-10-18 アルプス電気株式会社 電子同調チユ−ナ
JPS6121882Y2 (de) * 1980-11-14 1986-07-01
JPS58166134U (ja) * 1982-04-28 1983-11-05 アルプス電気株式会社 電子同調チユ−ナ
JPS6113708A (ja) * 1984-06-28 1986-01-22 Matsushita Electric Ind Co Ltd 電子チユ−ナ
JPS6132614A (ja) * 1984-07-25 1986-02-15 Matsushita Electric Ind Co Ltd 電子チユ−ナの混合回路
US5212828A (en) * 1989-12-15 1993-05-18 Hitachi, Ltd. Receiver apparatus
JP3057713B2 (ja) * 1990-06-01 2000-07-04 松下電器産業株式会社 テレビジョンチューナ
US6035185A (en) * 1995-08-17 2000-03-07 Zenith Electronics Corporation Selective RF circuit with varactor tuned bandpass switched bandpass filters
JP3273535B2 (ja) * 1995-12-08 2002-04-08 アルプス電気株式会社 Ｔｖチューナの複同調回路
DE19628186A1 (de) * 1996-07-12 1998-01-15 Philips Patentverwaltung Umschaltbares Bandfilter für Mehrband-Tuner
JPH11205700A (ja) 1998-01-12 1999-07-30 Alps Electric Co Ltd 複同調回路
JPH11234090A (ja) 1998-02-10 1999-08-27 Alps Electric Co Ltd アンテナ同調回路

Also Published As

Publication number Publication date
CN1306372A (zh) 2001-08-01
US20010004229A1 (en) 2001-06-21
EP1109312B1 (de) 2009-02-18
CN1177468C (zh) 2004-11-24
KR100362451B1 (ko) 2002-11-23
EP1109312A3 (de) 2003-10-22
EP1109312A2 (de) 2001-06-20
US6486757B2 (en) 2002-11-26
KR20010062493A (ko) 2001-07-07

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition