JPS6321979B2 - - Google Patents

Info

Publication number
JPS6321979B2
JPS6321979B2 JP9485481A JP9485481A JPS6321979B2 JP S6321979 B2 JPS6321979 B2 JP S6321979B2 JP 9485481 A JP9485481 A JP 9485481A JP 9485481 A JP9485481 A JP 9485481A JP S6321979 B2 JPS6321979 B2 JP S6321979B2
Authority
JP
Japan
Prior art keywords
output
frequency component
tracking
differential amplifier
photodetector
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.)
Expired
Application number
JP9485481A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57210453A (en
Inventor
Kazuo Hirasawa
Takahiro Kubo
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP9485481A priority Critical patent/JPS57210453A/ja
Publication of JPS57210453A publication Critical patent/JPS57210453A/ja
Publication of JPS6321979B2 publication Critical patent/JPS6321979B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)
JP9485481A 1981-06-19 1981-06-19 Optical tracking device Granted JPS57210453A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9485481A JPS57210453A (en) 1981-06-19 1981-06-19 Optical tracking device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9485481A JPS57210453A (en) 1981-06-19 1981-06-19 Optical tracking device

Publications (2)

Publication Number Publication Date
JPS57210453A JPS57210453A (en) 1982-12-24
JPS6321979B2 true JPS6321979B2 (US20110158925A1-20110630-C00042.png) 1988-05-10

Family

ID=14121613

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9485481A Granted JPS57210453A (en) 1981-06-19 1981-06-19 Optical tracking device

Country Status (1)

Country Link
JP (1) JPS57210453A (US20110158925A1-20110630-C00042.png)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2619381B2 (ja) * 1987-03-20 1997-06-11 株式会社日立製作所 光学的情報再生装置

Also Published As

Publication number Publication date
JPS57210453A (en) 1982-12-24

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