JPS632232U - - Google Patents
Info
- Publication number
- JPS632232U JPS632232U JP9482586U JP9482586U JPS632232U JP S632232 U JPS632232 U JP S632232U JP 9482586 U JP9482586 U JP 9482586U JP 9482586 U JP9482586 U JP 9482586U JP S632232 U JPS632232 U JP S632232U
- Authority
- JP
- Japan
- Prior art keywords
- head
- circuit
- rotational speed
- signal generating
- switching signal
- 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
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Television Signal Processing For Recording (AREA)
- Color Television Systems (AREA)
Description
第１図、第２図は本考案実施例の回路ブロツク
図、第３図はそのヘツド配置を示す図、第４図は
第２図の要部を示す図である。第５図は波形図で
ある。
１４，１５……モノマルチ（遅延手段）、２０
……充電電圧変更手段、４０……スレシホールド
変更手段。
1 and 2 are circuit block diagrams of an embodiment of the present invention, FIG. 3 is a diagram showing the head arrangement thereof, and FIG. 4 is a diagram showing the main part of FIG. 2. FIG. 5 is a waveform diagram. 14, 15...Mono multi (delay means), 20
... Charging voltage changing means, 40... Threshold changing means.
Claims (1)
ド装置のヘツド切換信号作成回路であつて、テー
プとヘツドの当接よりも前にＰＧパルスが出力さ
れるＰＧコイルと検出用マグネツトの機械的配置
を有し、このＰＧパルスを遅延手段によつて遅延
することでスイツチング位置を調整するものにお
いて、 前記遅延手段の時定数回路に供給される充電電
圧又は、前記遅延回路のスレシホールドを前記回
転速度の変化に応じて段階的に変化せしめる手段
を備えることを特徴とするヘツド切換信号作成回
路。[Claims for Utility Model Registration] A head switching signal generating circuit for a rotary head device with large stepwise changes in rotational speed, comprising a PG coil that outputs PG pulses before the tape and the head come into contact. In a device that has a mechanical arrangement of detection magnets and adjusts the switching position by delaying this PG pulse by a delay means, the charging voltage supplied to the time constant circuit of the delay means or the delay circuit 1. A head switching signal generating circuit comprising means for changing a threshold in stages according to changes in said rotational speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9482586U JPS632232U (en) | 1986-06-20 | 1986-06-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9482586U JPS632232U (en) | 1986-06-20 | 1986-06-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS632232U true JPS632232U (en) | 1988-01-08 |
Family
ID=30958678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9482586U Pending JPS632232U (en) | 1986-06-20 | 1986-06-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS632232U (en) |
-
1986
- 1986-06-20 JP JP9482586U patent/JPS632232U/ja active Pending
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