JPH0458852U - - Google Patents
Info
- Publication number
- JPH0458852U JPH0458852U JP10027990U JP10027990U JPH0458852U JP H0458852 U JPH0458852 U JP H0458852U JP 10027990 U JP10027990 U JP 10027990U JP 10027990 U JP10027990 U JP 10027990U JP H0458852 U JPH0458852 U JP H0458852U
- Authority
- JP
- Japan
- Prior art keywords
- compensation circuit
- acyclic
- selecting
- period
- discriminating
- 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
- 125000002015 acyclic group Chemical group 0.000 claims description 4
- 125000004122 cyclic group Chemical group 0.000 claims description 2
- 230000001052 transient effect Effects 0.000 claims 1
- 230000007704 transition Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
Landscapes
- Television Signal Processing For Recording (AREA)
- Rotational Drive Of Disk (AREA)
Description
第１図は、この考案によるドロツプアウト補償
回路の一実施例を示すブロツク図、第２図と第３
図は第１図のブロツク図の非巡回型ＤＯＣ回路構
成と巡回型ＤＯＣ回路構成部を示すブロツク図で
ある。
１……レーザビデオデイスク、２……スピンド
ルモータ、３……ＦＧモータ、４……ピツクアツ
プ、５……ＲＦアンプ、６……映像検波回路、７
……ドロツプアウト検出回路、８……スピンドル
サーボ回路、９……モータ駆動回路、１０……マ
イクロコピユータ、１１，１２……切換スイツチ
、１３……遅延回路。
FIG. 1 is a block diagram showing an embodiment of the dropout compensation circuit according to this invention, and FIGS.
This figure is a block diagram showing the acyclic DOC circuit configuration and the cyclic DOC circuit configuration section of the block diagram of FIG. 1. 1... Laser video disk, 2... Spindle motor, 3... FG motor, 4... Pickup, 5... RF amplifier, 6... Video detection circuit, 7
. . . Dropout detection circuit, 8 . . . Spindle servo circuit, 9 . . . Motor drive circuit, 10 .
Claims (1)
回型補償回路の動作を選択的に切り換えられる補
償手段と、 デイスクを回転するスピンドルモータの立ち上
げ過渡期間と定常回転期間とを判別する判別手段
と、 前記判別手段により立ち上げ過渡期間であると
判断されたときは前記非巡回型補償回路の動作を
選択し、定常回転期間であると判別されたときは
前記巡回型補償回路の動作を選択する制御手段と
、を備えて成ることを特徴とするドロツプアウト
補償回路。[Scope of Claim for Utility Model Registration] Compensation means that can selectively switch the operation of a cyclic compensation circuit and an acyclic compensation circuit by switching a switch, and a start-up transient period and a steady rotation period of a spindle motor that rotates a disk. a discriminating means for discriminating, and selecting an operation of the acyclic compensation circuit when the discriminating means determines that it is a start-up transition period, and selecting an operation of the acyclic compensation circuit when it is determined that it is a steady rotation period; A dropout compensation circuit comprising: control means for selecting the operation of the dropout compensation circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10027990U JPH0458852U (en) | 1990-09-27 | 1990-09-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10027990U JPH0458852U (en) | 1990-09-27 | 1990-09-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0458852U true JPH0458852U (en) | 1992-05-20 |
Family
ID=31842809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10027990U Pending JPH0458852U (en) | 1990-09-27 | 1990-09-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0458852U (en) |
-
1990
- 1990-09-27 JP JP10027990U patent/JPH0458852U/ja active Pending