JPS6068742U - automatic frequency control circuit - Google Patents

automatic frequency control circuit

Info

Publication number
JPS6068742U
JPS6068742U JP15941583U JP15941583U JPS6068742U JP S6068742 U JPS6068742 U JP S6068742U JP 15941583 U JP15941583 U JP 15941583U JP 15941583 U JP15941583 U JP 15941583U JP S6068742 U JPS6068742 U JP S6068742U
Authority
JP
Japan
Prior art keywords
control circuit
output
frequency control
automatic frequency
frequency
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
JP15941583U
Other languages
Japanese (ja)
Other versions
JPH073706Y2 (en
Inventor
横井　雄二
Original Assignee
三菱電機株式会社
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 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP15941583U priority Critical patent/JPH073706Y2/en
Publication of JPS6068742U publication Critical patent/JPS6068742U/en
Application granted granted Critical
Publication of JPH073706Y2 publication Critical patent/JPH073706Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (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) [Abstract] 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図は従来のＡＦＣ回路の一例を示すブロック図、第
２図はこの考案の一実施例によるＡＦＣ回路を示すブロ
ック図である。 １１は搬送波再生回路、１２は参照搬送波発振器、１３
は分周器、１４は遅延回路、１５は位相比較器、１６は
低域通過フィルタである。なお図中同一符号は同−又は
相当部分を示す。FIG. 1 is a block diagram showing an example of a conventional AFC circuit, and FIG. 2 is a block diagram showing an AFC circuit according to an embodiment of this invention. 11 is a carrier wave regeneration circuit, 12 is a reference carrier wave oscillator, 13
1 is a frequency divider, 14 is a delay circuit, 15 is a phase comparator, and 16 is a low-pass filter. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 復調器において使用される自動周波数制御回路であって
、中間周波を分周する分周器と、基準クロックに応じて
上記分周器用力の位相を遅延させる遅延回路と、上記分
周器出力と遅延回路出力との位相を比較する位相比較器
と、この位相比較器出力をろ波する低域通過フィルタと
、この低域通過フィルタ出力に応じた周波数の参照搬送
波を発振出力し復調器の搬送波再生回路に供給する参照
搬送波発生器とを備えたことを特徴とする自動周波数制
御回路。An automatic frequency control circuit used in a demodulator, comprising a frequency divider that divides an intermediate frequency, a delay circuit that delays the phase of the frequency divider output according to a reference clock, and the frequency divider output. A phase comparator that compares the phase with the output of the delay circuit, a low-pass filter that filters the output of this phase comparator, and a reference carrier wave with a frequency corresponding to the output of this low-pass filter that oscillates and outputs the carrier wave of the demodulator. An automatic frequency control circuit comprising: a reference carrier generator for supplying to a reproduction circuit.
JP15941583U 1983-10-15 1983-10-15 Demodulator Expired - Lifetime JPH073706Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15941583U JPH073706Y2 (en) 1983-10-15 1983-10-15 Demodulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15941583U JPH073706Y2 (en) 1983-10-15 1983-10-15 Demodulator

Publications (2)

Publication Number Publication Date
JPS6068742U true JPS6068742U (en) 1985-05-15
JPH073706Y2 JPH073706Y2 (en) 1995-01-30

Family

ID=30350927

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15941583U Expired - Lifetime JPH073706Y2 (en) 1983-10-15 1983-10-15 Demodulator

Country Status (1)

Country Link
JP (1) JPH073706Y2 (en)

Also Published As

Publication number Publication date
JPH073706Y2 (en) 1995-01-30

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