JPH0394827U - - Google Patents

Info

Publication number
JPH0394827U
JPH0394827U JP427390U JP427390U JPH0394827U JP H0394827 U JPH0394827 U JP H0394827U JP 427390 U JP427390 U JP 427390U JP 427390 U JP427390 U JP 427390U JP H0394827 U JPH0394827 U JP H0394827U
Authority
JP
Japan
Prior art keywords
aft circuit
sensitivity
frequency
frequency pull
switching means
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
JP427390U
Other languages
Japanese (ja)
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 JP427390U priority Critical patent/JPH0394827U/ja
Publication of JPH0394827U publication Critical patent/JPH0394827U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Television Receiver Circuits (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Description

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本考案のAFT回路の一実施例を示す
回路図、第2図はAFT回路の従来例を示す回路
図である。 20……引き込み感度制御回路、R,R
…抵抗(調整手段)、SW1……スイツチ(切換
手段)。
FIG. 1 is a circuit diagram showing an embodiment of the AFT circuit of the present invention, and FIG. 2 is a circuit diagram showing a conventional example of the AFT circuit. 20...Retraction sensitivity control circuit, R4 , R5 ...
...Resistance (adjustment means), SW1...Switch (switching means).

Claims (1)

【実用新案登録請求の範囲】 (1) M方式を含む複数の放送方式のテレビジヨ
ン放送を受信できる映像機器の中間周波数を常に
一定に保持するためのAFT回路において、 前記AFT回路の周波数引き込み感度を変化さ
せる調整手段と、 前記調整手段により、受信しようとするテレビ
ジヨン放送の放送方式に応じて前記周波数引き込
み感度を切り換える切換手段と、 を有することを特徴とするAFT回路。 (2) 前記切換手段が、受信しようとするテレビ
ジヨン放送の放送方式に応じて前記AFT回路の
周波数引き込み感度をM方式に対応した周波数引
き込み感度とM方式以外の方式に対応した周波数
引き込み感度のうちのいずれかに切り換える切換
手段である第1請求項記載のAFT回路。
[Claims for Utility Model Registration] (1) In an AFT circuit for always maintaining a constant intermediate frequency of video equipment capable of receiving television broadcasts of multiple broadcasting systems including the M system, the frequency pull-in sensitivity of the AFT circuit. An AFT circuit comprising: an adjusting means for changing the frequency; and a switching means for changing the frequency pull-in sensitivity according to a broadcasting system of a television broadcast to be received by the adjusting means. (2) The switching means changes the frequency pull-in sensitivity of the AFT circuit to a frequency pull-in sensitivity corresponding to the M-type and a frequency pull-in sensitivity corresponding to a type other than the M-type depending on the broadcast system of the television broadcast to be received. The AFT circuit according to claim 1, wherein the AFT circuit is a switching means for switching to either one of the two.
JP427390U 1990-01-19 1990-01-19 Pending JPH0394827U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP427390U JPH0394827U (en) 1990-01-19 1990-01-19

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP427390U JPH0394827U (en) 1990-01-19 1990-01-19

Publications (1)

Publication Number Publication Date
JPH0394827U true JPH0394827U (en) 1991-09-27

Family

ID=31508024

Family Applications (1)

Application Number Title Priority Date Filing Date
JP427390U Pending JPH0394827U (en) 1990-01-19 1990-01-19

Country Status (1)

Country Link
JP (1) JPH0394827U (en)

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