JPH0435234U - - Google Patents
Info
- Publication number
- JPH0435234U JPH0435234U JP7836590U JP7836590U JPH0435234U JP H0435234 U JPH0435234 U JP H0435234U JP 7836590 U JP7836590 U JP 7836590U JP 7836590 U JP7836590 U JP 7836590U JP H0435234 U JPH0435234 U JP H0435234U
- Authority
- JP
- Japan
- Prior art keywords
- timing pulse
- motor
- head
- braking
- period
- 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 description 3
- 230000004913 activation Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
Description
第１図は本考案の一実施例の回路ブロツク図、
第２図はその要部波形説明図を、それぞれ示す。
１１……加速度検出手段、１２……第２起動（
タイミング）パルス発生手段、７……キヤプスタ
ンモータ、８……ヘツドモータ、６……シリンダ
ドライブ回路。
FIG. 1 is a circuit block diagram of an embodiment of the present invention.
FIG. 2 shows an explanatory diagram of the waveforms of the main parts. 11... Acceleration detection means, 12... Second activation (
timing) pulse generating means, 7...capstan motor, 8...head motor, 6...cylinder drive circuit.
Claims (1)
を交互に供給してテープを間欠駆動すると共に、
テープ走行起動時に起動タイミングパルスをヘツ
ドモータに供給し回転ヘツドの回転を加速し、テ
ープ走行制動時に制動タイミングパルスをヘツド
モータに供給し回転ヘツドの回転を減速する磁気
再生装置に於いて、 前記キヤプスタンモータの回転検出パルス周期
の変化量を検出する周期変化検出手段と、 前記変化量が所定値以上に達している期間中に
、前記起動タイミングパルスを発生するタイミン
グパルス発生手段とを、 それぞれ配してなる回転ヘツドの回転速度制御回
路。[Claims for Utility Model Registration] In addition to intermittently driving the tape by alternately supplying starting pulses and braking pulses to the capstan motor,
In the magnetic reproducing device, the capstan is configured to supply a starting timing pulse to the head motor to accelerate the rotation of the rotary head when starting tape running, and to supply a braking timing pulse to the head motor to decelerate the rotation of the rotary head when braking the tape running. Period change detection means for detecting the amount of change in the rotation detection pulse period of the motor; and timing pulse generation means for generating the activation timing pulse during a period in which the amount of change reaches a predetermined value or more. A rotational speed control circuit for a rotating head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7836590U JPH0435234U (en) | 1990-07-23 | 1990-07-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7836590U JPH0435234U (en) | 1990-07-23 | 1990-07-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0435234U true JPH0435234U (en) | 1992-03-24 |
Family
ID=31621579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7836590U Pending JPH0435234U (en) | 1990-07-23 | 1990-07-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0435234U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60160042A (en) * | 1984-01-31 | 1985-08-21 | Aiwa Co Ltd | Video tape recorder |
| JPS63244355A (en) * | 1987-03-30 | 1988-10-11 | Sony Corp | Rotary head type reproducing device |
-
1990
- 1990-07-23 JP JP7836590U patent/JPH0435234U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60160042A (en) * | 1984-01-31 | 1985-08-21 | Aiwa Co Ltd | Video tape recorder |
| JPS63244355A (en) * | 1987-03-30 | 1988-10-11 | Sony Corp | Rotary head type reproducing device |
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