JPS6074277U - CD player access device - Google Patents
CD player access deviceInfo
- Publication number
- JPS6074277U JPS6074277U JP16438283U JP16438283U JPS6074277U JP S6074277 U JPS6074277 U JP S6074277U JP 16438283 U JP16438283 U JP 16438283U JP 16438283 U JP16438283 U JP 16438283U JP S6074277 U JPS6074277 U JP S6074277U
- Authority
- JP
- Japan
- Prior art keywords
- pickup
- input section
- drive device
- access device
- designated time
- 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.)
- Granted
Links
Landscapes
- Moving Of Head For Track Selection And Changing (AREA)
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の一実施例、第２図は第１図図示本考案
の一実施例の動作を説明する説明図、第３図は本考案の
要部の具体例、第４図は第３図図示本考案の要部の具体
例の特性を説明する説明図を表す。
図中、１はＣＤプレーヤ、２はＣＤ （コンパクト・デ
ィスク）、３は駆動モータ、４はピック・アップ、５は
ポテンショ・メータ、６は増幅器、７は指定時間入力部
、８はＤ／Ａコンバータ、９は減算部、１０はセレクタ
、１１はモータ駆動回路、１２はアクセス制御部、１３
は微調サーボ、１４は微調制御部、１５はチェック部、
１６は修正制御部を表す。Fig. 1 is an embodiment of the present invention, Fig. 2 is an explanatory diagram explaining the operation of the embodiment of the invention shown in Fig. 1, Fig. 3 is a specific example of the main part of the invention, and Fig. 4 is FIG. 3 is an explanatory diagram illustrating the characteristics of a specific example of the main part of the present invention. In the figure, 1 is a CD player, 2 is a CD (compact disc), 3 is a drive motor, 4 is a pickup, 5 is a potentiometer, 6 is an amplifier, 7 is a specified time input section, 8 is a D/A Converter, 9 is a subtraction unit, 10 is a selector, 11 is a motor drive circuit, 12 is an access control unit, 13
is a fine adjustment servo, 14 is a fine adjustment control section, 15 is a check section,
16 represents a modification control section.
Claims (1)
ック・アップと、該ピック・アップをディスクの回転方
向とほぼ直角方向に移動させる駆動装置と、該駆動装置
によって移動する前記ピック・アップの位置を検出する
位置検出器と、前記−ピック・アップの位置を所定位置
に移動させるためのデジタル値を入力する指定時間入力
部と、該指定時間入力部に入力されたデジタル値をアナ
ログ値に変換する変換部と、該変換部からのアナログ値
と前記位置検出器によって得られたアナログ値との差を
算出する減算部とを備え、該減算部からの出力信号を用
いて前記駆動装置の負帰還制御を行うＣＤプレーヤのア
クセス装置において、前記位置検出器によって検出され
たピック・アップの位置検出信号をピック・アップによ
って検出される絶対時間情報に一致させる位置検出信号
補償回路を備えたことを特徴とするＣＤプレーヤのアク
セス装置。A pickup that detects the presence or absence of a predetermined bit recorded on a disk, a drive device that moves the pickup in a direction substantially perpendicular to the rotational direction of the disk, and a position of the pickup that is moved by the drive device. a position detector for detecting the position of the pickup; a designated time input section for inputting a digital value for moving the pickup to a predetermined position; and a designated time input section for converting the digital value input to the designated time input section into an analog value. and a subtraction unit that calculates the difference between the analog value from the conversion unit and the analog value obtained by the position detector, and uses the output signal from the subtraction unit to calculate the negative value of the drive device. An access device for a CD player that performs feedback control, further comprising a position detection signal compensation circuit that matches a pickup position detection signal detected by the position detector with absolute time information detected by the pickup. A featured CD player access device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16438283U JPS6074277U (en) | 1983-10-24 | 1983-10-24 | CD player access device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16438283U JPS6074277U (en) | 1983-10-24 | 1983-10-24 | CD player access device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6074277U true JPS6074277U (en) | 1985-05-24 |
| JPH0237176Y2 JPH0237176Y2 (en) | 1990-10-08 |
Family
ID=30360408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16438283U Granted JPS6074277U (en) | 1983-10-24 | 1983-10-24 | CD player access device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6074277U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009303287A (en) * | 2008-06-10 | 2009-12-24 | Nidec Shibaura Corp | Motor controller |
-
1983
- 1983-10-24 JP JP16438283U patent/JPS6074277U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009303287A (en) * | 2008-06-10 | 2009-12-24 | Nidec Shibaura Corp | Motor controller |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0237176Y2 (en) | 1990-10-08 |
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