JPH01110572U - - Google Patents

Info

Publication number
JPH01110572U
JPH01110572U JP1988005714U JP571488U JPH01110572U JP H01110572 U JPH01110572 U JP H01110572U JP 1988005714 U JP1988005714 U JP 1988005714U JP 571488 U JP571488 U JP 571488U JP H01110572 U JPH01110572 U JP H01110572U
Authority
JP
Japan
Prior art keywords
circuit
video
pass filter
signal
low
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.)
Granted
Application number
JP1988005714U
Other languages
English (en)
Other versions
JPH051181Y2 (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 JP1988005714U priority Critical patent/JPH051181Y2/ja
Priority to KR2019890000510U priority patent/KR940003931Y1/ko
Publication of JPH01110572U publication Critical patent/JPH01110572U/ja
Application granted granted Critical
Publication of JPH051181Y2 publication Critical patent/JPH051181Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/20—Circuitry for controlling amplitude response
    • H04N5/205—Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic
    • H04N5/208—Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic for compensating for attenuation of high frequency components, e.g. crispening, aperture distortion correction

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Receiver Circuits (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Circuits Of Receivers In General (AREA)
  • Noise Elimination (AREA)

Description

【図面の簡単な説明】
第１図は、本考案の一実施例を示す回路図、第
２図は、従来のＡＦＴ回路を示す回路図、第３図
イ，ロはローパスフイルタの具体回路例を示す回
路図、及び第４図は第３図のローパスフイルタの
特性図である。 ３……混合回路、５，６……ＩＦ増幅回路、７
……リミツタ回路、８……ＡＦＴ検波回路、１１
……局部発振回路、１６……ローパスフイルタ。

Claims (1)

  1. 【実用新案登録請求の範囲】 (1) 映像ＲＦ信号を映像ＩＦ信号に変換する混
    合回路と、該混合回路からの映像ＩＦ信号を増幅
    する映像ＩＦ増幅回路と、該映像ＩＦ増幅回路か
    らの映像ＩＦ信号の振幅制限を行なうリミツタ回
    路と、該リミツタ回路の出力信号をＦＭ検波する
    ＡＦＴ検波回路と、該ＡＦＴ検波回路の検波出力
    に応じて発振周波数が変化する局部発振回路とを
    備える映像受信回路において、前記リミツタ回路
    と前記ＡＦＴ検波回路との間にローパスフイルタ
    を設けたことを特徴とする映像受信回路。 (2) 請求項第１項記載のローパスフイルタを能
    動型のローパスフイルタとしたことを特徴とする
    映像受信回路。 (3) 請求項第１項記載のローパスフイルタの遮
    断周波数を映像ＩＦ信号周波数と、該周波数の３
    倍の周波数との間に設定するようにしたことを特
    徴とする映像受信回路。 (4) 請求項第１項において映像ＩＦ増幅回路と
    、リミツタ回路と、ＡＦＴ検波回路と、ローパス
    フイルタとを単一の集積回路に内蔵させるように
    したことを特徴とする映像受信回路。 (5) 請求項第２項記載の能動型のローパスフイ
    ルタにピーキング特性を持たせる様にしたことを
    特徴とする映像受信回路。
JP1988005714U 1988-01-20 1988-01-20 Expired - Lifetime JPH051181Y2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP1988005714U JPH051181Y2 (ja) 1988-01-20 1988-01-20
KR2019890000510U KR940003931Y1 (ko) 1988-01-20 1989-01-19 영상 수신회로

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988005714U JPH051181Y2 (ja) 1988-01-20 1988-01-20

Publications (2)

Publication Number Publication Date
JPH01110572U true JPH01110572U (ja) 1989-07-26
JPH051181Y2 JPH051181Y2 (ja) 1993-01-13

Family

ID=11618789

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988005714U Expired - Lifetime JPH051181Y2 (ja) 1988-01-20 1988-01-20

Country Status (2)

Country Link
JP (1) JPH051181Y2 (ja)
KR (1) KR940003931Y1 (ja)

Also Published As

Publication number Publication date
KR890016825U (ko) 1989-08-19
KR940003931Y1 (ko) 1994-06-15
JPH051181Y2 (ja) 1993-01-13

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