JPS6466876A - Disk reproducing device - Google Patents

Disk reproducing device

Info

Publication number
JPS6466876A
JPS6466876A JP22436387A JP22436387A JPS6466876A JP S6466876 A JPS6466876 A JP S6466876A JP 22436387 A JP22436387 A JP 22436387A JP 22436387 A JP22436387 A JP 22436387A JP S6466876 A JPS6466876 A JP S6466876A
Authority
JP
Japan
Prior art keywords
gain
deviation
vibration
error signal
read
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
JP22436387A
Other languages
Japanese (ja)
Inventor
Shuji Kageyama
Yoichi Tabuchi
Kyoji Mizuno
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Priority to JP22436387A priority Critical patent/JPS6466876A/en
Publication of JPS6466876A publication Critical patent/JPS6466876A/en
Pending legal-status Critical Current

Links

Landscapes

  • Moving Of The Head To Find And Align With The Track (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To prevent the malfunction due to a flaw or a stain, etc., on a disk surface and the malfunction due to a vibration by detecting the deviation in the read position of a read means from an optimum position and changing the gain of an amplifying means in accordance with the size of an error signal corresponding to said deviation. CONSTITUTION:The gain of the amplifying means 8 is changed in accordance with the size of the error signal TE corresponding to the read position of read means 1, 2 and 3, and in case of the normal state of nonvibration, the error signal TE is minimized, and hence the gain of the amplifying means is set low so that its sensitivity is lowered. Consequently, the malfunction due to a flaw or a stain, etc., on the disk surface will never arise. And, in case of the occurrence of a vibration, the error signal TE is enlarged, and hence the gain of the amplifying means 8 is set high so that the sensitivity is promoted, thus correcting quickly the deviation in the read position due to the vibration. By this method, the deviation in a beam position due to the vibration is quickly corrected, and moreover a disk reproducing device capable of operating without the malfunction due to a flaw or a stain, etc., on a disk surface is hence obtained.
JP22436387A 1987-09-07 1987-09-07 Disk reproducing device Pending JPS6466876A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22436387A JPS6466876A (en) 1987-09-07 1987-09-07 Disk reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22436387A JPS6466876A (en) 1987-09-07 1987-09-07 Disk reproducing device

Publications (1)

Publication Number Publication Date
JPS6466876A true JPS6466876A (en) 1989-03-13

Family

ID=16812586

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22436387A Pending JPS6466876A (en) 1987-09-07 1987-09-07 Disk reproducing device

Country Status (1)

Country Link
JP (1) JPS6466876A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0454025U (en) * 1990-09-04 1992-05-08

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0454025U (en) * 1990-09-04 1992-05-08

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