JPS5651044A - Detector for part between data of record player - Google Patents

Detector for part between data of record player

Info

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
Application number
JP12545379A
Other languages
Japanese (ja)
Inventor
Hiroshi Yamazaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP12545379A priority Critical patent/JPS5651044A/en
Publication of JPS5651044A publication Critical patent/JPS5651044A/en
Pending legal-status Critical Current

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
JP12545379A 1979-09-29 1979-09-29 Detector for part between data of record player Pending JPS5651044A (en)

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)

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