JPS63129339U - - Google Patents

Info

Publication number
JPS63129339U
JPS63129339U JP1994787U JP1994787U JPS63129339U JP S63129339 U JPS63129339 U JP S63129339U JP 1994787 U JP1994787 U JP 1994787U JP 1994787 U JP1994787 U JP 1994787U JP S63129339 U JPS63129339 U JP S63129339U
Authority
JP
Japan
Prior art keywords
intermediate frequency
frequency band
switching system
calculation means
filter
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.)
Pending
Application number
JP1994787U
Other languages
English (en)
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 filed Critical
Priority to JP1994787U priority Critical patent/JPS63129339U/ja
Publication of JPS63129339U publication Critical patent/JPS63129339U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Noise Elimination (AREA)

Description

【図面の簡単な説明】
第１図は本考案の一実施例の構成を示すブロツ
ク図。第２図は本考案の一実施例における広、狭
中間周波フイルタの選択度特性を示す線図。第３
図は従来システムを示すブロツク図である。 １……広帯域フイルタ、２……狭帯域フイルタ
、３……中間周波増幅器、５……レベル検出器、
６……ＰＬＬ回路、８……Ａ／Ｄ変換器、９……
ＲＯＭ、１０……コンピユータ、１１および１２
……切替スイツチ。

Claims (1)

    【実用新案登録請求の範囲】
  1. 中間周波信号レベルを検出して、中間周波帯域
    フイルタを自動切換する自動中間周波帯域切替シ
    ステムにおいて、チユーナの選択度特性からＳ／
    Ｎ値を算出する演算手段と、演算手段による算出
    Ｓ／Ｎ値にともなつて、中間周波フイルタを選択
    する選択手段とを備えたことを特徴とする自動中
    間周波帯域切替システム。
JP1994787U 1987-02-16 1987-02-16 Pending JPS63129339U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1994787U JPS63129339U (ja) 1987-02-16 1987-02-16

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1994787U JPS63129339U (ja) 1987-02-16 1987-02-16

Publications (1)

Publication Number Publication Date
JPS63129339U true JPS63129339U (ja) 1988-08-24

Family

ID=30815005

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1994787U Pending JPS63129339U (ja) 1987-02-16 1987-02-16

Country Status (1)

Country Link
JP (1) JPS63129339U (ja)

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