JPS62198776U - - Google Patents

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Publication number
JPS62198776U
JPS62198776U JP8795786U JP8795786U JPS62198776U JP S62198776 U JPS62198776 U JP S62198776U JP 8795786 U JP8795786 U JP 8795786U JP 8795786 U JP8795786 U JP 8795786U JP S62198776 U JPS62198776 U JP S62198776U
Authority
JP
Japan
Prior art keywords
pulse
circuit
signal
predetermined
amplitude
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
JP8795786U
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 JP8795786U priority Critical patent/JPS62198776U/ja
Publication of JPS62198776U publication Critical patent/JPS62198776U/ja
Pending legal-status Critical Current

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  • Television Signal Processing For Recording (AREA)
  • Television Systems (AREA)

Description

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

第１図は、実施例のブロツク図、第２図、第３
図は、ダビング防止対策を説明する波形図、第４
図は、第１図における要部波形図である。 ２……同期分離回路、４，５……モノマルチ（
マスク回路）、６，７……アドレスカウンタ、９
……オンスクリーン文字、背景信号作成回路。 Figure 1 is a block diagram of the embodiment, Figures 2 and 3.
The figure is a waveform diagram explaining measures to prevent dubbing.
The figure is a waveform diagram of main parts in FIG. 1. 2... Synchronous separation circuit, 4, 5... Mono multi (
mask circuit), 6, 7...address counter, 9
...On-screen characters, background signal creation circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 垂直同期信号の前後の所定Ｈ期間に、所定振幅
のパルスが挿入された映像信号の所定位置に文字
等の信号を重畳せしめる表示装置の誤動作防止回
路において、前記映像信号より振幅に基づいて同
期信号を分離する同期分離回路出力より前記パル
スを除去するマスク回路を備えていることを特徴
とする誤動作防止回路。 In a malfunction prevention circuit for a display device that superimposes a signal such as a character on a predetermined position of a video signal into which a pulse of a predetermined amplitude is inserted during a predetermined H period before and after a vertical synchronization signal, a synchronization signal is generated based on the amplitude of the video signal. A malfunction prevention circuit comprising a mask circuit that removes the pulse from an output of a synchronous separation circuit that separates the pulse.
JP8795786U 1986-06-10 1986-06-10 Pending JPS62198776U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8795786U JPS62198776U (en) 1986-06-10 1986-06-10

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8795786U JPS62198776U (en) 1986-06-10 1986-06-10

Publications (1)

Publication Number Publication Date
JPS62198776U true JPS62198776U (en) 1987-12-17

Family

ID=30945643

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8795786U Pending JPS62198776U (en) 1986-06-10 1986-06-10

Country Status (1)

Country Link
JP (1) JPS62198776U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0377494A (en) * 1989-08-19 1991-04-03 Sanyo Electric Co Ltd Video display device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0377494A (en) * 1989-08-19 1991-04-03 Sanyo Electric Co Ltd Video display device

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