JPS5651044A - Detector for part between data of record player - Google Patents
Detector for part between data of record playerInfo
- Publication number
- JPS5651044A JPS5651044A JP12545379A JP12545379A JPS5651044A JP S5651044 A JPS5651044 A JP S5651044A JP 12545379 A JP12545379 A JP 12545379A JP 12545379 A JP12545379 A JP 12545379A JP S5651044 A JPS5651044 A JP S5651044A
- Authority
- JP
- Japan
- Prior art keywords
- light
- data
- photodetector
- light emitter
- detector
- 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
Abstract
PURPOSE: To ensure to prevent the adverse effect due to external scattering light with a simple constitution, by providing an optical filter which passes through the same length as the wave length of irradiated light from a light emitter, on a photodetector.
CONSTITUTION: The detector is to detect parts A2WE2 between data by utilizing the difference of the reflection rate between data sections A1WD1 on a record disc 11 and parts A2WE2 between data, when a light emitter 15 and a photodetector 16 are provided on a tone arm 12 and the irradiated light from the light emitter 15 is reflected on the record disc 11 and received on the photodetector 16. The adverse effect due to external scattering light can be prevented by providing an optical filter which passes through the light having the same wave length as that of the irradiated light at least from a light emitter 23, on a photodetector 24.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12545379A JPS5651044A (en) | 1979-09-29 | 1979-09-29 | Detector for part between data of record player |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12545379A JPS5651044A (en) | 1979-09-29 | 1979-09-29 | Detector for part between data of record player |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5651044A true JPS5651044A (en) | 1981-05-08 |
Family
ID=14910461
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12545379A Pending JPS5651044A (en) | 1979-09-29 | 1979-09-29 | Detector for part between data of record player |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5651044A (en) |
-
1979
- 1979-09-29 JP JP12545379A patent/JPS5651044A/en active Pending
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