JPS63125475U - - Google Patents

Info

Publication number
JPS63125475U
JPS63125475U JP1598787U JP1598787U JPS63125475U JP S63125475 U JPS63125475 U JP S63125475U JP 1598787 U JP1598787 U JP 1598787U JP 1598787 U JP1598787 U JP 1598787U JP S63125475 U JPS63125475 U JP S63125475U
Authority
JP
Japan
Prior art keywords
frequency
difference
integer
ratio
television audio
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.)
Granted
Application number
JP1598787U
Other languages
Japanese (ja)
Other versions
JPH0520059Y2 (en
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 JP1598787U priority Critical patent/JPH0520059Y2/ja
Publication of JPS63125475U publication Critical patent/JPS63125475U/ja
Application granted granted Critical
Publication of JPH0520059Y2 publication Critical patent/JPH0520059Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Description

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

第１図は本考案の一実施例を示す系統図、第２
図は従来の音声変調器の系統図である。 図において、１，５，１１，１５……分周器、
２，１２……位相比較器、３，１３……ループフ
イルタ、４，１４……変調発振器、１６……ミキ
サー。 Fig. 1 is a system diagram showing an embodiment of the present invention;
The figure is a system diagram of a conventional audio modulator. In the figure, 1, 5, 11, 15... frequency divider,
2, 12... Phase comparator, 3, 13... Loop filter, 4, 14... Modulation oscillator, 16... Mixer.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ＩＦ変調方式のテレビジヨン音声変調器におい
て、音声ＩＦ出力周波数と映像ＩＦ周波数との周
波数の差をミキサーにより取り出し、この差周波
数を基準周波数と比較して両者の周波数比が、整
数対整数の比率となるようにＡＰＣ回路を構成し
、基準周波数としてビデオ信号の水平周波数を使
用したことを特徴とするテレビジヨン音声変調器
。 In a television audio modulator using the IF modulation method, the frequency difference between the audio IF output frequency and the video IF frequency is extracted by a mixer, and this difference frequency is compared with a reference frequency to determine the frequency ratio of the two, which is an integer-to-integer ratio. 1. A television audio modulator characterized in that an APC circuit is configured so that the horizontal frequency of a video signal is used as a reference frequency.
JP1598787U 1987-02-04 1987-02-04 Expired - Lifetime JPH0520059Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1598787U JPH0520059Y2 (en) 1987-02-04 1987-02-04

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1598787U JPH0520059Y2 (en) 1987-02-04 1987-02-04

Publications (2)

Publication Number Publication Date
JPS63125475U true JPS63125475U (en) 1988-08-16
JPH0520059Y2 JPH0520059Y2 (en) 1993-05-26

Family

ID=30807430

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1598787U Expired - Lifetime JPH0520059Y2 (en) 1987-02-04 1987-02-04

Country Status (1)

Country Link
JP (1) JPH0520059Y2 (en)

Also Published As

Publication number Publication date
JPH0520059Y2 (en) 1993-05-26

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