JPS6222763U - - Google Patents
Info
- Publication number
- JPS6222763U JPS6222763U JP11135785U JP11135785U JPS6222763U JP S6222763 U JPS6222763 U JP S6222763U JP 11135785 U JP11135785 U JP 11135785U JP 11135785 U JP11135785 U JP 11135785U JP S6222763 U JPS6222763 U JP S6222763U
- Authority
- JP
- Japan
- Prior art keywords
- control circuit
- spindle motor
- output
- position detection
- disk
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Rotational Drive Of Disk (AREA)
Description
第1図はスピンドルモータサーボ回路のブロツ
ク図、第2図はピツクアツプを示す図、第3図は
位置検出手段を示す図、第4図は光磁気デイスク
の平面図である。
10……スピンドルモータ、11……CAV制
御回路、12……位置検出手段、13……スレシ
ヨールド電圧作成手段、14……比較手段、15
……CLV制御回路、16……第1スイツチ。
FIG. 1 is a block diagram of a spindle motor servo circuit, FIG. 2 is a diagram showing a pickup, FIG. 3 is a diagram showing a position detecting means, and FIG. 4 is a plan view of a magneto-optical disk. 10... Spindle motor, 11... CAV control circuit, 12... Position detection means, 13... Threshold voltage creation means, 14... Comparison means, 15
...CLV control circuit, 16...first switch.
Claims (1)
ヨールド電圧と前記位置検出手段出力とを比較す
る比較手段と、デイスク状記録媒体を回転せしめ
るスピンドルモータと、該スピンドルモータをC
AV制御するCAV制御回路と、前記スピンドル
モータをCLV制御するCLV制御回路と、前記
比較手段出力に基づき前記CAV制御回路出力又
はCLV制御回路出力の一方を選択して前記スピ
ンドルモータに供給するスイツチ手段を備えるデ
イスク状記録媒体記録装置。 a pickup position detection means; a comparison means for comparing a predetermined threshold voltage with the output of the position detection means; a spindle motor for rotating a disk-shaped recording medium;
A CAV control circuit that performs AV control, a CLV control circuit that performs CLV control of the spindle motor, and a switch means that selects either the CAV control circuit output or the CLV control circuit output based on the output of the comparison means and supplies the selected one to the spindle motor. A disk-shaped recording medium recording device comprising:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11135785U JPS6222763U (en) | 1985-07-19 | 1985-07-19 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11135785U JPS6222763U (en) | 1985-07-19 | 1985-07-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6222763U true JPS6222763U (en) | 1987-02-12 |
Family
ID=30991206
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11135785U Pending JPS6222763U (en) | 1985-07-19 | 1985-07-19 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6222763U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0973715A (en) * | 1995-06-26 | 1997-03-18 | Matsushita Electric Ind Co Ltd | Optical disk recording/reproducing method and optical disk device |
JP2006079771A (en) * | 2004-09-13 | 2006-03-23 | Hitachi Ltd | Disk device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58155505A (en) * | 1981-11-20 | 1983-09-16 | Toshiba Corp | Video disc recording and reproducing system |
JPS58175109A (en) * | 1982-04-07 | 1983-10-14 | Pioneer Video Kk | Recording system of discoidal recording medium |
-
1985
- 1985-07-19 JP JP11135785U patent/JPS6222763U/ja active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58155505A (en) * | 1981-11-20 | 1983-09-16 | Toshiba Corp | Video disc recording and reproducing system |
JPS58175109A (en) * | 1982-04-07 | 1983-10-14 | Pioneer Video Kk | Recording system of discoidal recording medium |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0973715A (en) * | 1995-06-26 | 1997-03-18 | Matsushita Electric Ind Co Ltd | Optical disk recording/reproducing method and optical disk device |
JP2006079771A (en) * | 2004-09-13 | 2006-03-23 | Hitachi Ltd | Disk device |