JPS5584053A - Tracking control unit for optical reproducer - Google Patents

Tracking control unit for optical reproducer

Info

Publication number
JPS5584053A
JPS5584053A JP15661078A JP15661078A JPS5584053A JP S5584053 A JPS5584053 A JP S5584053A JP 15661078 A JP15661078 A JP 15661078A JP 15661078 A JP15661078 A JP 15661078A JP S5584053 A JPS5584053 A JP S5584053A
Authority
JP
Japan
Prior art keywords
disk
light beam
tracking control
lens
control unit
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
JP15661078A
Other languages
Japanese (ja)
Inventor
Mitsuro Moriya
Masahiro Deguchi
Noboru Wakami
Yasuhiro Goto
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP15661078A priority Critical patent/JPS5584053A/en
Publication of JPS5584053A publication Critical patent/JPS5584053A/en
Pending legal-status Critical Current

Links

Landscapes

  • Automatic Focus Adjustment (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE: To secure the high-accuracy tracking control by detecting the reflected light from the recording medium through the optical detector containing the divided regions and then controlling the light beam driving unit with the differential output.
CONSTITUTION: Light beam 5 given from light source 4 is focused on recording disk 1 which functions as the recording medium via lens 6, optical element 7 and condenser lens 8 each. And the reflected light given from disk 1 is separated by element 7 to be supplied to 2-division optical detector 10, and the output of each divided region of detector 10 is supplied to differential amplifier 11. This differential output drives driving element 13 attached to movable part 14 including light source 4 and lens 6. As a result, the high-accuracy control is ensured so that the light beam focused on disk 1 may always be on the track.
COPYRIGHT: (C)1980,JPO&Japio
JP15661078A 1978-12-18 1978-12-18 Tracking control unit for optical reproducer Pending JPS5584053A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15661078A JPS5584053A (en) 1978-12-18 1978-12-18 Tracking control unit for optical reproducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15661078A JPS5584053A (en) 1978-12-18 1978-12-18 Tracking control unit for optical reproducer

Publications (1)

Publication Number Publication Date
JPS5584053A true JPS5584053A (en) 1980-06-24

Family

ID=15631490

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15661078A Pending JPS5584053A (en) 1978-12-18 1978-12-18 Tracking control unit for optical reproducer

Country Status (1)

Country Link
JP (1) JPS5584053A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5198002A (en) * 1975-02-26 1976-08-28

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5198002A (en) * 1975-02-26 1976-08-28

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