JPS6437962U - - Google Patents
Info
- Publication number
- JPS6437962U JPS6437962U JP13040687U JP13040687U JPS6437962U JP S6437962 U JPS6437962 U JP S6437962U JP 13040687 U JP13040687 U JP 13040687U JP 13040687 U JP13040687 U JP 13040687U JP S6437962 U JPS6437962 U JP S6437962U
- Authority
- JP
- Japan
- Prior art keywords
- disk
- signal
- speed control
- holding means
- control 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
- 230000008054 signal transmission Effects 0.000 claims 5
- 238000010586 diagram Methods 0.000 description 7
- 230000001133 acceleration Effects 0.000 description 2
Landscapes
- Rotational Drive Of Disk (AREA)
Description
第１図乃至第４図は本考案の一実施例を示すも
のであつて、第１図はコンパクトデイスクプレー
ヤの要部の構成を示すブロツク図、第２図は第１
図に示したデイジタル信号処理回路およびＥＦＭ
信号保持回路の構成を示すブロツク図、第３図は
第２図に示した時間軸補正回路の構成を示すブロ
ツク図、第４図は第１図に示したＥＦＭ信号保持
回路の構成を示す回路図、第５図乃至第７図は本
考案の他の実施例を示すものであつて、第５図は
コンパクトデイスクプレーヤの要部の構成を示す
ブロツク図、第６図は第５図に示した加減速信号
保持回路の構成を示すブロツク図、第７図は第５
図に示したＥＦＭ信号保持回路の構成を示すブロ
ツク図、第８図は従来例を示すものであつて、コ
ンパクトデイスクプレーヤの要部の構成を示すブ
ロツク図である。
１はデイスク、２はピツクアツプ、３はデイジ
タル信号処理回路、５はスピンドルモータ（デイ
スク回転手段）、６はスライドモータ、１１はマ
イクロコンピユータ、１３はＥＦＭ信号保持回路
（回転速度制御信号保持手段）、１５は時間軸補
正回路、２５，３１は切換えスイツチ（スイツチ
ング手段、信号保持手段）、２６，３２は切換え
スイツチ（スイツチング手段）、２７，３３はシ
フトレジスタ（信号保持手段）、２９は加減速信
号保持回路（回転速度制御信号保持手段）、３６
，３８は信号線（信号保持手段）、３５，３７は
信号線である。
1 to 4 show one embodiment of the present invention, in which FIG. 1 is a block diagram showing the configuration of the main parts of a compact disc player, and FIG.
Digital signal processing circuit and EFM shown in the figure
A block diagram showing the configuration of the signal holding circuit, FIG. 3 is a block diagram showing the configuration of the time axis correction circuit shown in FIG. 2, and FIG. 4 is a circuit showing the configuration of the EFM signal holding circuit shown in FIG. 1. 5 to 7 show other embodiments of the present invention, in which FIG. 5 is a block diagram showing the configuration of the main parts of a compact disc player, and FIG. A block diagram showing the configuration of the acceleration/deceleration signal holding circuit, FIG.
FIG. 8 is a block diagram showing the structure of the EFM signal holding circuit shown in the figure. FIG. 8 shows a conventional example, and is a block diagram showing the structure of the main part of a compact disc player. 1 is a disk, 2 is a pickup, 3 is a digital signal processing circuit, 5 is a spindle motor (disc rotation means), 6 is a slide motor, 11 is a microcomputer, 13 is an EFM signal holding circuit (rotational speed control signal holding means), 15 is a time axis correction circuit, 25 and 31 are changeover switches (switching means, signal holding means), 26 and 32 are changeover switches (switching means), 27 and 33 are shift registers (signal holding means), and 29 is an acceleration/deceleration signal. Holding circuit (rotational speed control signal holding means), 36
, 38 are signal lines (signal holding means), and 35 and 37 are signal lines.
Claims (1)
イスク回転手段にて回転されると共に、デイスク
の記録媒体部にピツクアツプを追従させて、記録
媒体部に記録された再生情報を検出するトラツキ
ング動作と、上記ピツクアツプをデイスクの半径
方向の所定位置に移動させる検索動作とを行い、
上記トラツキング動作時には、上記記録媒体部に
記録された速度情報から得た回転速度制御信号に
基づいて、記録媒体部とピツクアツプとの相対速
度が一定となるように、デイスク回転手段の回転
を制御するデイスク装置において、 上記ピツクアツプとデイスク回転手段との間の
回転速度制御信号の信号伝達経路に、トラツキン
グ動作時には、信号伝達経路の回転速度制御信号
を信号保持手段に供給する一方、検索動作時には
、信号保持手段の前段側における信号伝達経路を
遮断すると共に、信号保持手段の出力側とこの信
号保持手段の後段側における信号伝達経路とを接
続するスイツチング手段と、入力された回転速度
制御信号を保持する信号保持手段とからなる回転
速度制御信号保持手段を設けたことを特徴とする
デイスク装置。[Claims for Utility Model Registration] A disk having a recording medium portion formed in a spiral shape is rotated by a disk rotating means, and a pickup is made to follow the recording medium portion of the disk, thereby reproducing data recorded on the recording medium portion. Performs a tracking operation to detect information and a search operation to move the pick-up to a predetermined position in the radial direction of the disk,
During the tracking operation, the rotation of the disk rotating means is controlled based on a rotation speed control signal obtained from speed information recorded in the recording medium section so that the relative speed between the recording medium section and the pickup is constant. In the disk device, during the tracking operation, the rotation speed control signal of the signal transmission path is supplied to the signal holding means on the signal transmission path of the rotation speed control signal between the pickup and the disk rotation means, and during the search operation, the signal transmission path is supplied with the rotation speed control signal. Switching means for cutting off the signal transmission path on the front side of the holding means and connecting the output side of the signal holding means and the signal transmission path on the rear side of the signal holding means, and holding the input rotational speed control signal. 1. A disk device comprising a rotational speed control signal holding means comprising a signal holding means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13040687U JPS6437962U (en) | 1987-08-27 | 1987-08-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13040687U JPS6437962U (en) | 1987-08-27 | 1987-08-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6437962U true JPS6437962U (en) | 1989-03-07 |
Family
ID=31385543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13040687U Pending JPS6437962U (en) | 1987-08-27 | 1987-08-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6437962U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7711961B2 (en) | 2003-08-27 | 2010-05-04 | Sony Corporation | Electronic apparatus and authenticating method |
-
1987
- 1987-08-27 JP JP13040687U patent/JPS6437962U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7711961B2 (en) | 2003-08-27 | 2010-05-04 | Sony Corporation | Electronic apparatus and authenticating method |
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