JPS5837278U - Television screen discrimination device - Google Patents

Television screen discrimination device

Info

Publication number
JPS5837278U
JPS5837278U JP13002781U JP13002781U JPS5837278U JP S5837278 U JPS5837278 U JP S5837278U JP 13002781 U JP13002781 U JP 13002781U JP 13002781 U JP13002781 U JP 13002781U JP S5837278 U JPS5837278 U JP S5837278U
Authority
JP
Japan
Prior art keywords
circuit
output
television screen
threshold
discrimination device
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
JP13002781U
Other languages
Japanese (ja)
Inventor
哲雄 鈴木
Original Assignee
株式会社　朋栄
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 株式会社　朋栄 filed Critical 株式会社　朋栄
Priority to JP13002781U priority Critical patent/JPS5837278U/en
Publication of JPS5837278U publication Critical patent/JPS5837278U/en
Pending legal-status Critical Current

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  • Closed-Circuit Television Systems (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図は本考案実施例装置の回路ブロック構成図。第２
図は閾値選択動作の説明図。 １・・・入力端子、２・・・増幅器、３・・・クランプ
回路、４・・・ＡＤ変換回路、５・・・（タイミング信
号入力）端子、７・・・減算回路、８・・・記憶回路、
９・・・（同期信号入力）端子、１０・・・閾値選択回
路、１１・・・制御回路、１２・・・出力端子。FIG. 1 is a circuit block diagram of a device according to an embodiment of the present invention. Second
The figure is an explanatory diagram of threshold selection operation. DESCRIPTION OF SYMBOLS 1... Input terminal, 2... Amplifier, 3... Clamp circuit, 4... AD conversion circuit, 5... (timing signal input) terminal, 7... Subtraction circuit, 8... memory circuit,
9... (synchronization signal input) terminal, 10... threshold selection circuit, 11... control circuit, 12... output terminal.

Claims (2)

【実用新案登録請求の範囲】[Scope of utility model registration request] （１）入力されるビデオ信号の振幅瞬時値を１フレーム
の周期の中の所定のタイミングで繰返して標本化しデジ
タル信号に変換するＡＤ変換回路と、この回路の出力を
上記１フレームのｎｍ（ｎは１以上の整数とする。）の
フレーム周期にわたり保持する記憶回路と、この記憶回
路の出力または上記ＡＤ変換回路の出力から得られる異
なる２つのフレームの対応するタイミングについての上
記デジタル信号を入力としてこの入力の差を演算する減
算回路と、この減算回路の出力が設定された閾値を越え
たときに出力を送出する閾値選択回路とを備えたテレビ
ジョン画面判別装置。(1) An AD conversion circuit that repeatedly samples the instantaneous amplitude value of the input video signal at a predetermined timing within the cycle of one frame and converts it into a digital signal, and converts the output of this circuit into nm (n is an integer greater than or equal to 1), and the above-mentioned digital signals regarding the corresponding timings of two different frames obtained from the output of this storage circuit or the output of the above-mentioned AD conversion circuit are input. A television screen discrimination device comprising a subtraction circuit that calculates the difference between the inputs, and a threshold selection circuit that sends out an output when the output of the subtraction circuit exceeds a set threshold. （２）閾値選択回路の閾値の設定が減算回路の入力信号
の値に応じて自動的に設定される実用新案登録請求の範
囲第（１）項記載のテレビジョン画面判別装置。(2) The television screen discriminating device according to claim 1, wherein the threshold of the threshold selection circuit is automatically set according to the value of the input signal of the subtraction circuit.
JP13002781U 1981-08-31 1981-08-31 Television screen discrimination device Pending JPS5837278U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13002781U JPS5837278U (en) 1981-08-31 1981-08-31 Television screen discrimination device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13002781U JPS5837278U (en) 1981-08-31 1981-08-31 Television screen discrimination device

Publications (1)

Publication Number Publication Date
JPS5837278U true JPS5837278U (en) 1983-03-10

Family

ID=29923680

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13002781U Pending JPS5837278U (en) 1981-08-31 1981-08-31 Television screen discrimination device

Country Status (1)

Country Link
JP (1) JPS5837278U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63186186U (en) * 1987-05-19 1988-11-29

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63186186U (en) * 1987-05-19 1988-11-29
JPH053031Y2 (en) * 1987-05-19 1993-01-25

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