JPS6051628U - Video tape recorder no-signal recording prevention device - Google Patents

Video tape recorder no-signal recording prevention device

Info

Publication number
JPS6051628U
JPS6051628U JP14245283U JP14245283U JPS6051628U JP S6051628 U JPS6051628 U JP S6051628U JP 14245283 U JP14245283 U JP 14245283U JP 14245283 U JP14245283 U JP 14245283U JP S6051628 U JPS6051628 U JP S6051628U
Authority
JP
Japan
Prior art keywords
erasure prevention
video signal
absence
prevention device
video tape
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
JP14245283U
Other languages
Japanese (ja)
Inventor
山崎　正徳
Original Assignee
シャープ株式会社
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 by シャープ株式会社 filed Critical シャープ株式会社
Priority to JP14245283U priority Critical patent/JPS6051628U/en
Publication of JPS6051628U publication Critical patent/JPS6051628U/en
Pending legal-status Critical Current

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  • Television Signal Processing For Recording (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

第１図は本考案のビデオテープレコーダーの無信号録画
防止装置の一実施例を示すブロック図、第２図は同実施
例の具体的な回路図である。 １・・・・・・映像信号入力端子、２・・・・・・映像
信号有無判別手段、４・・・・・・誤消去防止スイッチ
、４・・・・・・誤消去防止回路。FIG. 1 is a block diagram showing an embodiment of the no-signal recording prevention device for a video tape recorder of the present invention, and FIG. 2 is a specific circuit diagram of the same embodiment. 1... Video signal input terminal, 2... Video signal presence/absence determining means, 4... Erroneous erasure prevention switch, 4... Erroneous erasure prevention circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 映像信号の有無を判別する映像信号有無判別手段と、ビ
デオテープの誤消去防止爪の有無を検出する誤消去防止
スイッチと、前記映像信号有無判別手段の出力を該誤消
去防止スイッチを介して入力する制御用マイクロコンピ
ュータ−の誤消去防止回路とからなり、前記映像信号が
検出されない場合もしくは誤消去防止爪がない場合に誤
消去防止回路を動作し、録画不可能にしたことを特徴と
するビデオテープレコーダーの無信号録画防止装置。A video signal presence/absence determining means for determining the presence or absence of a video signal, an accidental erasure prevention switch for detecting the presence or absence of an accidental erasure prevention claw on the video tape, and an output of the video signal presence/absence determination means is inputted via the accidental erasure prevention switch. and an erroneous erasure prevention circuit of a control microcomputer that operates, and when the video signal is not detected or there is no erroneous erasure prevention claw, the erroneous erasure prevention circuit is activated to make recording impossible. No-signal recording prevention device for tape recorders.
JP14245283U 1983-09-13 1983-09-13 Video tape recorder no-signal recording prevention device Pending JPS6051628U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14245283U JPS6051628U (en) 1983-09-13 1983-09-13 Video tape recorder no-signal recording prevention device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14245283U JPS6051628U (en) 1983-09-13 1983-09-13 Video tape recorder no-signal recording prevention device

Publications (1)

Publication Number Publication Date
JPS6051628U true JPS6051628U (en) 1985-04-11

Family

ID=30318295

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14245283U Pending JPS6051628U (en) 1983-09-13 1983-09-13 Video tape recorder no-signal recording prevention device

Country Status (1)

Country Link
JP (1) JPS6051628U (en)

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