JPS63109390U - - Google Patents
Info
- Publication number
- JPS63109390U JPS63109390U JP70687U JP70687U JPS63109390U JP S63109390 U JPS63109390 U JP S63109390U JP 70687 U JP70687 U JP 70687U JP 70687 U JP70687 U JP 70687U JP S63109390 U JPS63109390 U JP S63109390U
- Authority
- JP
- Japan
- Prior art keywords
- control signal
- reproduction control
- capstan
- code
- duty ratio
- 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
Links
- 238000001514 detection method Methods 0.000 claims 1
- 230000000737 periodic effect Effects 0.000 claims 1
- 230000000630 rising effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
Description
第１図は本考案の一実施例のブロツク図、第２
図は同実施例における各部信号波形図である。
１……キヤプスタンＦＧパルス検出器、３……
コントロールヘツド、５……アンドゲート、６…
…カウンタ。
Figure 1 is a block diagram of one embodiment of the present invention;
The figure is a diagram of signal waveforms at various parts in the same embodiment. 1... Capstan FG pulse detector, 3...
Control head, 5...and gate, 6...
…counter.
Claims (1)
によりコントロールトラツクに頭出し信号等のコ
ード信号を記録する磁気記録再生装置において、 再生モード時にキヤプスタンモータから発生さ
れるキヤプスタンＦＧパルスと前記コントロール
トラツクより再生される再生コントロール信号と
の論理演算出力を得る論理ゲート手段と、 前記再生コントロール信号の立上り（または立
下り）でリセツトされ且つ前記論理演算出力のパ
ルス数をカウントするパルスカウント手段とを具
備してなり、 再生コントロール信号と一定の周期関係にある
キヤプスタンＦＧパルスに基いて再生コントロー
ル信号のデユーテイ比を計測しコード信号を検出
することを特徴とするコード信号検出回路。[Claim for Utility Model Registration] Capstan FG pulses generated from a capstan motor during playback mode in a magnetic recording/playback device that records code signals such as cue signals on a control track by changing the duty ratio of a control signal. and a reproduction control signal reproduced from the control track; and a pulse counter that is reset at the rising edge (or falling edge) of the reproduction control signal and counts the number of pulses of the logical operation output. 1. A code signal detection circuit comprising means for detecting a code signal by measuring a duty ratio of a reproduction control signal based on a capstan FG pulse having a constant periodic relationship with the reproduction control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP70687U JPS63109390U (en) | 1987-01-07 | 1987-01-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP70687U JPS63109390U (en) | 1987-01-07 | 1987-01-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63109390U true JPS63109390U (en) | 1988-07-14 |
Family
ID=30777923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP70687U Pending JPS63109390U (en) | 1987-01-07 | 1987-01-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63109390U (en) |
-
1987
- 1987-01-07 JP JP70687U patent/JPS63109390U/ja active Pending
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