JPS54107310A - Optical type reproducer - Google Patents

Optical type reproducer

Info

Publication number
JPS54107310A
JPS54107310A JP1378878A JP1378878A JPS54107310A JP S54107310 A JPS54107310 A JP S54107310A JP 1378878 A JP1378878 A JP 1378878A JP 1378878 A JP1378878 A JP 1378878A JP S54107310 A JPS54107310 A JP S54107310A
Authority
JP
Japan
Prior art keywords
medium
information
detected
phase
controlling
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
JP1378878A
Other languages
Japanese (ja)
Inventor
Tadao Nagai
Yoshihiro Uchiumi
Masao Uehara
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.)
Teac Corp
Mitsubishi Electric Corp
Original Assignee
Teac Corp
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 Teac Corp, Mitsubishi Electric Corp filed Critical Teac Corp
Priority to JP1378878A priority Critical patent/JPS54107310A/en
Publication of JPS54107310A publication Critical patent/JPS54107310A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To achieve the stabilization of tracking controlling by vibrating the projection beam to a recording medium and detecting the reflected components thereof.
CONSTITUTION: A beam 4 is projected 3 to a medium 1 which has been recorded with information such as composite PCM signals including synchronizing signal, etc. through arraying of optically detectable unit recording regions. For the purpose of scanning, the medium 1 and apparatus 3 are moved and driven 5, 2 and the information is detected 13 by the reflected beam from the medium 1. Within the information detection range, the beam 4 is vibrated 10 and from the detection outputs, the vibtating frequency components of the beam 4 are detected 28 and the phase thereof and the phase of a reference signal 29 are compared to form 31 a tracking control signal, based on which controlling 23 is so performed as to project the beam 4 in the position optimum for information tracks.
COPYRIGHT: (C)1979,JPO&Japio
JP1378878A 1978-02-09 1978-02-09 Optical type reproducer Pending JPS54107310A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1378878A JPS54107310A (en) 1978-02-09 1978-02-09 Optical type reproducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1378878A JPS54107310A (en) 1978-02-09 1978-02-09 Optical type reproducer

Publications (1)

Publication Number Publication Date
JPS54107310A true JPS54107310A (en) 1979-08-23

Family

ID=11842981

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1378878A Pending JPS54107310A (en) 1978-02-09 1978-02-09 Optical type reproducer

Country Status (1)

Country Link
JP (1) JPS54107310A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58203636A (en) * 1982-05-20 1983-11-28 Trio Kenwood Corp Method and device for detection of tracking error signal with information reading device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58203636A (en) * 1982-05-20 1983-11-28 Trio Kenwood Corp Method and device for detection of tracking error signal with information reading device
JPH0318255B2 (en) * 1982-05-20 1991-03-12 Kenutsudo Kk

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