JPH02148417U - - Google Patents
Info
- Publication number
- JPH02148417U JPH02148417U JP5719889U JP5719889U JPH02148417U JP H02148417 U JPH02148417 U JP H02148417U JP 5719889 U JP5719889 U JP 5719889U JP 5719889 U JP5719889 U JP 5719889U JP H02148417 U JPH02148417 U JP H02148417U
- Authority
- JP
- Japan
- Prior art keywords
- section
- detected
- pattern
- signal
- 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 6
- 238000000926 separation method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Optical Transform (AREA)
Description
第１図は本考案のデイスク駆動用回転検出装置
を示したブロツク図、第２図は本考案における発
光部、光検出部及び負帰還回路部を示した回路図
、第３図は本考案における被検出部が設けられた
回転体の平面図、第４図は本考案における光検出
部からの出力波形を示したタイムチヤート、第５
図は本考案における分別回路部を示した回路図、
第６図は第５図の回路におけるタイムチヤートで
ある。
１……回転体、２……デイスク駆動部材、３…
…被検出部、４……発光部、５……光検出部、６
……負帰還回路部、７……分別回路部。
Fig. 1 is a block diagram showing the disk drive rotation detection device of the present invention, Fig. 2 is a circuit diagram showing the light emitting section, light detection section, and negative feedback circuit section of the present invention, and Fig. 3 is a circuit diagram showing the disk drive rotation detection device of the present invention. FIG. 4 is a plan view of the rotating body provided with the detection target section, and FIG. 4 is a time chart showing the output waveform from the photodetection section in the present invention.
The figure is a circuit diagram showing the separation circuit section in this invention.
FIG. 6 is a time chart for the circuit shown in FIG. 1...Rotating body, 2...Disc drive member, 3...
...Detected part, 4... Light emitting part, 5... Light detection part, 6
... Negative feedback circuit section, 7... Separation circuit section.
Claims (1)
と異なるが他のすべてが一定パターンの複数の被
検出部を有する回転体と、 該回転体上の被検出部を検出し、該被検出部の
前記パターンに応じた信号を出力する光検出部と
、 該光検出部を照射する発光部と、 前記光検出部より出力された信号を、前記デイ
スク駆動部材を制御するための回転制御用信号と
デイスク回転数等を検出するための検出用指標信
号とに分別する分別回路部と、 前記光検出部の出力信号を前記発光部に負帰還
して、該分別回路部に該光検出部の出力する信号
を一定に供給させるための負帰還回路部と、 を有する構成としたデイスク駆動用回転検出装置
。[Scope of Claim for Utility Model Registration] A rotating body that rotates together with a disk drive member and has a plurality of detected parts that are different from each other in one but all the others have a constant pattern, and a detected part on the rotating body. a light detecting section that detects and outputs a signal according to the pattern of the detected section; a light emitting section that irradiates the light detecting section; and a light detecting section that outputs a signal according to the pattern of the detected section; a separation circuit section that separates a rotation control signal for controlling a rotation control signal and a detection index signal for detecting a disk rotation speed, etc.; A rotation detecting device for driving a disk, comprising: a negative feedback circuit section for constantly supplying a signal output from the photodetecting section to a circuit section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5719889U JPH02148417U (en) | 1989-05-18 | 1989-05-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5719889U JPH02148417U (en) | 1989-05-18 | 1989-05-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02148417U true JPH02148417U (en) | 1990-12-17 |
Family
ID=31581695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5719889U Pending JPH02148417U (en) | 1989-05-18 | 1989-05-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02148417U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0579758U (en) * | 1992-03-27 | 1993-10-29 | 三洋電機株式会社 | Rotary encoder mounting device |
-
1989
- 1989-05-18 JP JP5719889U patent/JPH02148417U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0579758U (en) * | 1992-03-27 | 1993-10-29 | 三洋電機株式会社 | Rotary encoder mounting device |