JPS5953558U - capstan servo circuit - Google Patents
capstan servo circuitInfo
- Publication number
- JPS5953558U JPS5953558U JP14685082U JP14685082U JPS5953558U JP S5953558 U JPS5953558 U JP S5953558U JP 14685082 U JP14685082 U JP 14685082U JP 14685082 U JP14685082 U JP 14685082U JP S5953558 U JPS5953558 U JP S5953558U
- Authority
- JP
- Japan
- Prior art keywords
- capstan
- latch
- signal
- servo 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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図及び第２図は夫々この考案の説明に供するトラッ
クパターン図、第３図は従来のキャプスタンサーボ回路
の一例を示す系統図、第４図はこの考案に係るキャプス
タンサーボ回路の一例を示す系統図、第５図はその動作
説明に供する波形図である。
３はカウンタ、２４Ａ、２４Ｂは第１及び第２のラッチ
回路、２５Ａ、２５Ｂは第１及び第２のＤ−Ａ変換器、
２７．２８は第１及び第２のラッチパルス、ＰＬＳ、
ＰＬＰの形成回路である。
第４図
ノツ
□□□１Figures 1 and 2 are track pattern diagrams for explaining this invention, Figure 3 is a system diagram showing an example of a conventional capstan servo circuit, and Figure 4 is an example of a capstan servo circuit according to this invention. FIG. 5 is a waveform diagram for explaining the operation. 3 is a counter, 24A and 24B are first and second latch circuits, 25A and 25B are first and second DA converters,
27.28 are the first and second latch pulses, PLS,
This is a PLP formation circuit. Figure 4 Notsu □□□1
Claims (1)
てこれを再生トラッキングの基準信号に用いるようにし
たキャプスタンサーボ回路において、キャプスタンの回
転速度に対応した回転信号を形成する周波数発電機と、
この回転信号でゲートされたクロックが供給されるカウ
ンタと、このカウンタの出力が供給される第１及び第２
のラッチ回路と、第１のクラッチ出力より上記キャプス
タンの回転速度制御信号を形成する第１のＤ−Ａ変換器
と、第２のラッチ出力より記録時の上記キャプスタンの
回転位相制御信号を形成する第２のＤ−Ａ変換器と、第
１及び第２のラッチパルス形成回路とを有し、これら第
１及び第２のラッチパルスのタイミングは異ならされて
なることを特徴とするキャプスタンサーボ回路。In a capstan servo circuit that reproduces a pilot signal frequency-multiplexed with a video signal and uses it as a reference signal for reproduction tracking, a frequency generator that forms a rotation signal corresponding to the rotation speed of the capstan;
a counter to which a clock gated by the rotation signal is supplied, and first and second counters to which the output of this counter is supplied;
a latch circuit, a first D-A converter that forms a rotational speed control signal for the capstan from a first clutch output, and a rotational phase control signal for the capstan during recording from a second latch output. A capstan comprising a second D-A converter for forming a pulse, and first and second latch pulse forming circuits, the first and second latch pulses having different timings. servo circuit.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14685082U JPS5953558U (en) | 1982-09-28 | 1982-09-28 | capstan servo circuit |
| CA000436569A CA1210149A (en) | 1982-09-28 | 1983-09-13 | Digital capstan servo circuit |
| US06/534,508 US4500822A (en) | 1982-09-28 | 1983-09-21 | Digital capstan servo circuit |
| AU19548/83A AU564953B2 (en) | 1982-09-28 | 1983-09-26 | A digital capstan servo circuit |
| EP83305750A EP0104931B1 (en) | 1982-09-28 | 1983-09-27 | A digital capstan servo circuit |
| DE8383305750T DE3380131D1 (en) | 1982-09-28 | 1983-09-27 | A digital capstan servo circuit |
| AT83305750T ATE44327T1 (en) | 1982-09-28 | 1983-09-27 | DIGITAL CIRCUIT FOR A SERVO DRIVE. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14685082U JPS5953558U (en) | 1982-09-28 | 1982-09-28 | capstan servo circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5953558U true JPS5953558U (en) | 1984-04-07 |
Family
ID=30326738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14685082U Pending JPS5953558U (en) | 1982-09-28 | 1982-09-28 | capstan servo circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5953558U (en) |
-
1982
- 1982-09-28 JP JP14685082U patent/JPS5953558U/en active Pending
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