JPS5856344U - Tape mark detection circuit - Google Patents
Tape mark detection circuitInfo
- Publication number
- JPS5856344U JPS5856344U JP15029881U JP15029881U JPS5856344U JP S5856344 U JPS5856344 U JP S5856344U JP 15029881 U JP15029881 U JP 15029881U JP 15029881 U JP15029881 U JP 15029881U JP S5856344 U JPS5856344 U JP S5856344U
- Authority
- JP
- Japan
- Prior art keywords
- mark detection
- tape
- tape mark
- detection circuit
- output
- 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
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
第１図は従来めテープマーク検出回路を示す構成図、第
２図はこの考案に係るテープマーク検出回路の一実施例
を示す構成図、第３図は第２図の具体例を示す構成図、
第４図は第３図の各部の出、 力波形を示す図、第５図
は第４図の一部を拡大して示す図である。
ＩＮ・・・入力端子、２１・・・バイパスフィルタ、２
２・・・ゼロクロスコンパレータ、２４・・・リトリガ
ブルモノマルチバイブレータ、ＯＵＴ・・・出力端子。FIG. 1 is a block diagram showing a conventional tape mark detection circuit, FIG. 2 is a block diagram showing an embodiment of the tape mark detection circuit according to this invention, and FIG. 3 is a block diagram showing a specific example of the tape mark detection circuit in FIG. ,
FIG. 4 is a diagram showing the output and force waveforms of each part in FIG. 3, and FIG. 5 is an enlarged diagram of a part of FIG. 4. IN...Input terminal, 21...Bypass filter, 2
2...Zero cross comparator, 24...Retriggerable mono multivibrator, OUT...Output terminal.
Claims (1)
ータ間ブランク部をテープマーク信娘して検出するテー
プマーク検出回路において、前記キューイング再生出力
をゼロレベルでステイスした方形波出力を得るゼロクロ
スコンパレータと、このゼロクロスコンパレータからの
方形波出力によりトリガされるもので、出力周期が前記
キューイング再生出力の最小周期より長く設定されたリ
トリガブルモノマルチバイブレータとを具備してなるこ
とを特徴とするテープマーク検出回路。A tape mark detection circuit for detecting a blank part between data on a tape from a cueing playback output of a tape recorder as a tape mark signal includes a zero cross comparator that obtains a square wave output obtained by keeping the cueing playback output at zero level; A tape mark detection device comprising: a retriggerable mono multivibrator that is triggered by a square wave output from a zero cross comparator and whose output cycle is set longer than the minimum cycle of the cueing playback output. circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15029881U JPS5856344U (en) | 1981-10-09 | 1981-10-09 | Tape mark detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15029881U JPS5856344U (en) | 1981-10-09 | 1981-10-09 | Tape mark detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5856344U true JPS5856344U (en) | 1983-04-16 |
Family
ID=29943030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15029881U Pending JPS5856344U (en) | 1981-10-09 | 1981-10-09 | Tape mark detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5856344U (en) |
-
1981
- 1981-10-09 JP JP15029881U patent/JPS5856344U/en active Pending
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