JPS6050565U - Field discrimination circuit - Google Patents

Field discrimination circuit

Info

Publication number
JPS6050565U
JPS6050565U JP14198383U JP14198383U JPS6050565U JP S6050565 U JPS6050565 U JP S6050565U JP 14198383 U JP14198383 U JP 14198383U JP 14198383 U JP14198383 U JP 14198383U JP S6050565 U JPS6050565 U JP S6050565U
Authority
JP
Japan
Prior art keywords
signal
field discrimination
horizontal sync
discrimination circuit
pulse
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
JP14198383U
Other languages
Japanese (ja)
Inventor
大槻　光弘
Original Assignee
日本電気ホームエレクトロニクス株式会社
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 日本電気ホームエレクトロニクス株式会社 filed Critical 日本電気ホームエレクトロニクス株式会社
Priority to JP14198383U priority Critical patent/JPS6050565U/en
Publication of JPS6050565U publication Critical patent/JPS6050565U/en
Pending legal-status Critical Current

Links

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 drawings]

第１図は従来のフィールド判別回路の一実施例を示す回
路図、第２図ａｘｄは第１図に示す回路の各部動作波形
図、第３図は本考案によるフィールド判別回路の一実施
例を示す回路図、第４図ａ〜ｅは第３図に示す回路の各
部動作波形図である。 ６・・・ラッチ回路、７・・・ワンショットマルチバイ
ブレータ回路、８・・・抵抗、９・・・コンデンサ、１
０・・・インバータ。FIG. 1 is a circuit diagram showing an embodiment of a conventional field discrimination circuit, FIG. 2 axd is an operational waveform diagram of each part of the circuit shown in FIG. The circuit diagrams shown in FIGS. 4a to 4e are operation waveform diagrams of each part of the circuit shown in FIG. 3. 6...Latch circuit, 7...One-shot multivibrator circuit, 8...Resistor, 9...Capacitor, 1
0...Inverter.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] フィールド判別を行なおうとするテレビ信号から分離さ
れた水平同期信号の前縁に於いてトリガされることによ
り水平同期信号の周期から水平同期信号のパルス期間を
減じた時間幅以下のパルス信号を発生するワンショット
マルチバイブレータ回路と、前記テレビ信号から分離さ
れた垂直同期信号の前縁に同期して前記パルス信号をラ
ッチす−ることによりテレビ信号のフィールド判別信号
を出力するラッチ回路とを備えたことを特徴とするフィ
ールド判別回路。By being triggered at the leading edge of the horizontal sync signal separated from the television signal for which field discrimination is to be performed, a pulse signal with a time width equal to or less than the period of the horizontal sync signal minus the pulse period of the horizontal sync signal is generated. and a latch circuit that outputs a field discrimination signal of the television signal by latching the pulse signal in synchronization with the leading edge of the vertical synchronization signal separated from the television signal. A field discrimination circuit characterized by:
JP14198383U 1983-09-13 1983-09-13 Field discrimination circuit Pending JPS6050565U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14198383U JPS6050565U (en) 1983-09-13 1983-09-13 Field discrimination circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14198383U JPS6050565U (en) 1983-09-13 1983-09-13 Field discrimination circuit

Publications (1)

Publication Number Publication Date
JPS6050565U true JPS6050565U (en) 1985-04-09

Family

ID=30317392

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14198383U Pending JPS6050565U (en) 1983-09-13 1983-09-13 Field discrimination circuit

Country Status (1)

Country Link
JP (1) JPS6050565U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03278772A (en) * 1990-03-28 1991-12-10 Nec Corp Field identification device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5114524B1 (en) * 1971-06-03 1976-05-10

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5114524B1 (en) * 1971-06-03 1976-05-10

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03278772A (en) * 1990-03-28 1991-12-10 Nec Corp Field identification device

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