JPS6213077U - - Google Patents

Info

Publication number
JPS6213077U
JPS6213077U JP10451485U JP10451485U JPS6213077U JP S6213077 U JPS6213077 U JP S6213077U JP 10451485 U JP10451485 U JP 10451485U JP 10451485 U JP10451485 U JP 10451485U JP S6213077 U JPS6213077 U JP S6213077U
Authority
JP
Japan
Prior art keywords
circuit
audio
carrier
audio signal
signals
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
JP10451485U
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 JP10451485U priority Critical patent/JPS6213077U/ja
Publication of JPS6213077U publication Critical patent/JPS6213077U/ja
Pending legal-status Critical Current

Links

Description

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

第１図は本考案のＲＦコンバータの過変調防止
回路を示す回路図、第２図は映像キヤリアｆｐ、
カラーサブキヤリアｆｃ、音声キヤリアｆｓの周
波数―レベル特性を示す特性図、第３図は本考案
のＲＦコンバータの過変調防止回路において、プ
リエンフアシス回路に対する音声入力電圧―周波
数変調（ＦＭ）による偏移及び変調率特性を示す
特性図である。 主な図番の説明、３……抵抗、４……コンデン
サ、５，６……ダイオード、８……変調回路。 Figure 1 is a circuit diagram showing the overmodulation prevention circuit of the RF converter of the present invention, Figure 2 is a video carrier fp,
FIG. 3 is a characteristic diagram showing the frequency-level characteristics of the color subcarrier fc and the audio carrier fs. In the overmodulation prevention circuit of the RF converter of the present invention, the audio input voltage to the pre-emphasis circuit - deviation due to frequency modulation (FM) and FIG. 3 is a characteristic diagram showing modulation rate characteristics. Explanation of main figure numbers, 3...Resistor, 4...Capacitor, 5, 6...Diode, 8...Modulation circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 映像キヤリア、カラーサブキヤリア及び音声キ
ヤリアを各々の映像信号、カラー信号及び音声信
号にて変調するＲＦコンバータにおいて、前記音
声信号の高域周波数を強調するプリエンフアシス
回路、及び高域周波数が強調された前記音声信号
にて前記音声キヤリアを周波数変調する変調回路
の間に、周波数変調された前記音声キヤリアの偏
移幅の拡大を防止するクリツプ回路を介在させた
ことを特徴とするＲＦコンバータの過変調防止回
路。 An RF converter that modulates a video carrier, a color subcarrier, and an audio carrier with respective video signals, color signals, and audio signals, including a preemphasis circuit that emphasizes high frequencies of the audio signal, and a preemphasis circuit that emphasizes the high frequencies of the audio signal. Overmodulation prevention for an RF converter, characterized in that a clip circuit for preventing an expansion of the deviation width of the frequency-modulated audio carrier is interposed between a modulation circuit that frequency-modulates the audio carrier using an audio signal. circuit.
JP10451485U 1985-07-09 1985-07-09 Pending JPS6213077U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10451485U JPS6213077U (en) 1985-07-09 1985-07-09

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10451485U JPS6213077U (en) 1985-07-09 1985-07-09

Publications (1)

Publication Number Publication Date
JPS6213077U true JPS6213077U (en) 1987-01-26

Family

ID=30978079

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10451485U Pending JPS6213077U (en) 1985-07-09 1985-07-09

Country Status (1)

Country Link
JP (1) JPS6213077U (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5797278A (en) * 1980-12-09 1982-06-16 Nec Corp Television video fm transmitter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5797278A (en) * 1980-12-09 1982-06-16 Nec Corp Television video fm transmitter

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