JPS6427029A - Optical recording and reproducing device - Google Patents

Optical recording and reproducing device

Info

Publication number
JPS6427029A
JPS6427029A JP18225687A JP18225687A JPS6427029A JP S6427029 A JPS6427029 A JP S6427029A JP 18225687 A JP18225687 A JP 18225687A JP 18225687 A JP18225687 A JP 18225687A JP S6427029 A JPS6427029 A JP S6427029A
Authority
JP
Japan
Prior art keywords
reproduction
error detection
recording
reproducing device
split
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.)
Granted
Application number
JP18225687A
Other languages
Japanese (ja)
Other versions
JP2594957B2 (en
Inventor
Masahisa Shinoda
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 JP62182256A priority Critical patent/JP2594957B2/en
Publication of JPS6427029A publication Critical patent/JPS6427029A/en
Application granted granted Critical
Publication of JP2594957B2 publication Critical patent/JP2594957B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To realize an optical recording and reproducing device being economical and excellent in its assembly property, by a simple optical system, by separating a beam for recording and a beam for reproduction reflected by an information recording medium, and executing a focusing error detection and a tracking error detection by using only the beam for the reproduction. CONSTITUTION:The beam 2 for the recording and the beam 3 for the reproduction from a 2-beam semiconductor laser 1 are led onto an information recording medium 9, and information is recorded and reproduced. A focusing error detection is executed through a 2-split photodetector 20 and a differential amplifier 27 by light-shielding completely the recording use beam 2 by a knife edge 19, and also, light-shielding half the beam 3 for the reproduction. As for a tracking error detection, the beam 3 for the reproduction is bi-sected by using a wedge prism 33, and split beam 35a, 35b are received by photodetecting surfaces 36a, 36b of a 3-split photodetector 36, and led to a differential amplifier 26, by which an output signal TS by a detection principle of a push-pull method can be obtained.
JP62182256A 1987-07-23 1987-07-23 Optical recording / reproducing device Expired - Fee Related JP2594957B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62182256A JP2594957B2 (en) 1987-07-23 1987-07-23 Optical recording / reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62182256A JP2594957B2 (en) 1987-07-23 1987-07-23 Optical recording / reproducing device

Publications (2)

Publication Number Publication Date
JPS6427029A true JPS6427029A (en) 1989-01-30
JP2594957B2 JP2594957B2 (en) 1997-03-26

Family

ID=16115073

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62182256A Expired - Fee Related JP2594957B2 (en) 1987-07-23 1987-07-23 Optical recording / reproducing device

Country Status (1)

Country Link
JP (1) JP2594957B2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61153830A (en) * 1984-12-27 1986-07-12 Nec Corp Optical disk device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61153830A (en) * 1984-12-27 1986-07-12 Nec Corp Optical disk device

Also Published As

Publication number Publication date
JP2594957B2 (en) 1997-03-26

Similar Documents

Publication Publication Date Title
US4935913A (en) Optical information recording and reproducing apparatus
EP0933758A3 (en) Optical information reproduction device and signal processing circuit used therein
ES2031193T3 (en) PROCEDURE FOR AN OPTICAL DEVICE DEVICE.
JPS6430025A (en) Recording and reproducing device
AU568426B2 (en) Apparatus for recording or reading information
KR910008670A (en) Optical head for optical information recording and reproduction
HK106195A (en) Optical scanning device
US5136567A (en) Photo-detecting device
CA2100636A1 (en) Optical information reproducing device
EP1304687A4 (en) Optical element, optical head and optical information processor
KR100213270B1 (en) Optical pickup for use with a double-sided disk
JPS6427029A (en) Optical recording and reproducing device
JPH0522305B2 (en)
KR920702529A (en) Magneto-optical recording and playback equipment
SU1203583A1 (en) Device for positioning radiation beam in case of optic reproducing of information
SU1455360A1 (en) Device for following-up the data track of optical record carraier
MXPA02003982A (en) Optical recording medium, substrate for optical recording medium and optical disk device.
JPS56145532A (en) Optical information recording and reproducing device
JPS6085444A (en) Tracking servo circuit
JPS6476437A (en) Optical information recording and reproducing device
JPS57203233A (en) Optical recorder and reproducer
JPS57212632A (en) Information recording medium and information recording device for it
JPS54145103A (en) Optical reproducer
JPS5644127A (en) Optical pickup
JPH02149941A (en) Photo detector

Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees