JPH02128211U - - Google Patents
Info
- Publication number
- JPH02128211U JPH02128211U JP3415989U JP3415989U JPH02128211U JP H02128211 U JPH02128211 U JP H02128211U JP 3415989 U JP3415989 U JP 3415989U JP 3415989 U JP3415989 U JP 3415989U JP H02128211 U JPH02128211 U JP H02128211U
- Authority
- JP
- Japan
- Prior art keywords
- detection means
- error information
- position error
- optical pickup
- optical
- 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
- 230000003287 optical effect Effects 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Moving Of Head For Track Selection And Changing (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Description
第１図は本考案に係る光学ピツクアツプ送り装
置の一実施例を示す構成図、第２図は上記送り装
置の機械的構成を示す模式図、第３図は上記送り
装置におけるステツプモータの駆動パルスの波形
図である。
１……差動増幅器、２……トラツキングサーボ
回路、３……ローパスフイルタ、５……レベルコ
ンハレータ、６……マイクロコンピユータ、７Ａ
，７Ｂ……デイジタル・アナログ変換器、８Ａ１
，８Ａ２，８Ｂ１，８Ｂ２……モータ駆動回路、
１０……光学ピツクアツプ、２１……ステツプモ
ータ。
FIG. 1 is a block diagram showing an embodiment of the optical pickup feeding device according to the present invention, FIG. 2 is a schematic diagram showing the mechanical structure of the feeding device, and FIG. 3 is a driving pulse of the step motor in the feeding device. FIG. 1...Differential amplifier, 2...Tracking servo circuit, 3...Low pass filter, 5...Level conhalator, 6...Microcomputer, 7A
, 7B...Digital-to-analog converter, 8A 1
, 8A 2 , 8B 1 , 8B 2 ... motor drive circuit,
10...Optical pick-up, 21...Step motor.
Claims (1)
と、 上記光学ピツクアツプの位置誤差情報を検出す
る検出手段と、 上記光学ピツクアツプの位置誤差情報を検出す
る検出手段による位置誤差情報に基づいて、上記
ステツプモータの安定点における駆動電流を零に
した傾斜台形波状の駆動パルスを形成する駆動制
御回路とを備え、 上記駆動制御回路にて形成される傾斜台形波状
の駆動パルスにて上記ステツプモータを駆動して
上記光学ピツクアツプを移動させる構成を特徴と
する光学ピツクアツプ送り装置。[Scope of Claim for Utility Model Registration] A step motor for moving an optical pickup, a detection means for detecting position error information of the optical pickup, and a detection means based on position error information by the detection means for detecting position error information of the optical pickup. , a drive control circuit for forming a drive pulse in the form of an inclined trapezoidal wave with the drive current at a stable point of the step motor being zero; An optical pick-up feeding device, characterized in that the optical pick-up is moved by driving the optical pick-up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989034159U JPH0725854Y2 (en) | 1989-03-24 | 1989-03-24 | Optical pickup feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989034159U JPH0725854Y2 (en) | 1989-03-24 | 1989-03-24 | Optical pickup feeder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02128211U true JPH02128211U (en) | 1990-10-23 |
| JPH0725854Y2 JPH0725854Y2 (en) | 1995-06-07 |
Family
ID=31538392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989034159U Expired - Lifetime JPH0725854Y2 (en) | 1989-03-24 | 1989-03-24 | Optical pickup feeder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0725854Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6477496A (en) * | 1987-09-17 | 1989-03-23 | Alps Electric Co Ltd | Driving method for stepping motor |
-
1989
- 1989-03-24 JP JP1989034159U patent/JPH0725854Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6477496A (en) * | 1987-09-17 | 1989-03-23 | Alps Electric Co Ltd | Driving method for stepping motor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0725854Y2 (en) | 1995-06-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |