JPS63147082U - - Google Patents

Info

Publication number
JPS63147082U
JPS63147082U JP1987039443U JP3944387U JPS63147082U JP S63147082 U JPS63147082 U JP S63147082U JP 1987039443 U JP1987039443 U JP 1987039443U JP 3944387 U JP3944387 U JP 3944387U JP S63147082 U JPS63147082 U JP S63147082U
Authority
JP
Japan
Prior art keywords
detection means
comparison
component
compensation circuit
high frequency
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
JP1987039443U
Other languages
English (en)
Other versions
JPH054372Y2 (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 JP1987039443U priority Critical patent/JPH054372Y2/ja
Priority to US07/169,254 priority patent/US4893192A/en
Priority to EP19880302329 priority patent/EP0283281B1/en
Publication of JPS63147082U publication Critical patent/JPS63147082U/ja
Application granted granted Critical
Publication of JPH054372Y2 publication Critical patent/JPH054372Y2/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
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/93—Regeneration of the television signal or of selected parts thereof
    • H04N5/94—Signal drop-out compensation

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)

Description

【図面の簡単な説明】
第１図は本考案の実施例を示すブロツク図、第
２図は第１図の回路中の基準レベル信号発生回路
の具体的構成を示すブロツク図、第３図は本考案
の他の実施例を示すブロツク図、第４図は第３図
の回路の各部の動作を示す波形図、第５図はドロ
ツプアウト補償回路の従来例を示すブロツク図、
第６図は第５図の回路の各部の動作を示す波形図
である。 主要部分の符号の説明、２……映像検出部、３
……ドロツプアウト検出部、４……切替スイツチ
、１０……基準レベル信号発生回路。

Claims (1)

  1. 【実用新案登録請求の範囲】 (1) 映像信号のドロツプアウト補償回路であつ
    て、前記映像信号を含む高周波信号の所定成分を
    検出する検出手段と、該検出手段の出力レベルと
    基準レベルとを比較しその比較結果に応じてドロ
    ツプアウト検出パルスを発生する比較手段とを含
    み、前記比較手段は前記映像信号の輝度成分レベ
    ルに応じて前記基準レベルを設定することを特徴
    とするドロツプアウト補償回路。 (2) 前記検出手段は前記高周波信号のエンベロ
    ープ成分を検出することを特徴とする実用新案登
    録請求の範囲第１項記載のドロツプアウト補償回
    路。 (3) 前記検出手段は前記高周波信号の所定周波
    数成分を検出することを特徴とする実用新案登録
    請求の範囲第１項記載のドロツプアウト補償回路
    。
JP1987039443U 1987-02-23 1987-03-17 Expired - Lifetime JPH054372Y2 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP1987039443U JPH054372Y2 (ja) 1987-03-17 1987-03-17
US07/169,254 US4893192A (en) 1987-03-17 1988-03-16 Video signal drop-out corrector circuit responsive to level of luminance component of the signal
EP19880302329 EP0283281B1 (en) 1987-02-23 1988-03-17 Drop-out compensator circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987039443U JPH054372Y2 (ja) 1987-03-17 1987-03-17

Publications (2)

Publication Number Publication Date
JPS63147082U true JPS63147082U (ja) 1988-09-28
JPH054372Y2 JPH054372Y2 (ja) 1993-02-03

Family

ID=12553160

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987039443U Expired - Lifetime JPH054372Y2 (ja) 1987-02-23 1987-03-17

Country Status (2)

Country Link
US (1) US4893192A (ja)
JP (1) JPH054372Y2 (ja)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02137595A (ja) * 1988-11-18 1990-05-25 Sony Corp ドロップアウトの検出回路
DE69021265T2 (de) * 1989-05-19 1996-03-21 Sanyo Electric Co Schaltung zur Kompensation eines Aussetzfehlers.
JPH03244285A (ja) * 1990-02-22 1991-10-31 Asahi Optical Co Ltd 表示素子駆動装置
JP3057263B2 (ja) * 1990-11-27 2000-06-26 ソニー株式会社 ドロップアウト検出装置
GB2250395A (en) * 1990-11-27 1992-06-03 Ferguson Ltd Reducing visibility of impulsive interference in television satellite recievers
JPH04369986A (ja) * 1991-06-19 1992-12-22 Canon Inc 情報信号処理装置
KR0165251B1 (ko) * 1992-10-22 1999-03-20 윤종용 주파수 드롭아우트 검출회로 및 방법
JPH0795538A (ja) * 1993-09-17 1995-04-07 Canon Inc 画像記録再生装置
US5778104A (en) * 1996-06-19 1998-07-07 Northrop Grumman Corporation Adaptive luminance-based filter

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3366732A (en) * 1961-07-10 1968-01-30 Minnesota Mining & Mfg Electronic dropout suppressor having autoamtic phase control
FR2280168A1 (fr) * 1974-07-23 1976-02-20 Thomson Brandt Procede de detection d'alteration de signaux de lecture d'information enregistree sur un support et appareil mettant en oeuvre un tel procede
AT337269B (de) * 1975-07-03 1977-06-27 Philips Nv Schaltungsanordnung fur einen dropout-detektor
GB2008888B (en) * 1977-10-27 1982-06-30 Quantel Ltd Drop-out compensation system
JPS5765968A (en) * 1980-10-13 1982-04-21 Sony Corp Drop-out detecting circuit
JPS58189842A (ja) * 1982-04-30 1983-11-05 Toshiba Corp 光学式デジタルデイスクプレ−ヤ装置
NL8303559A (nl) * 1983-10-17 1985-05-17 Philips Nv Signaaluitvalskorrektieschakeling voor het korrigeren van videosignalen die door signaaluitvalsstoringen verstoord zijn.

Also Published As

Publication number Publication date
US4893192A (en) 1990-01-09
JPH054372Y2 (ja) 1993-02-03

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