JPS5727441A - Reproducing device - Google Patents

Reproducing device

Info

Publication number
JPS5727441A
JPS5727441A JP10068980A JP10068980A JPS5727441A JP S5727441 A JPS5727441 A JP S5727441A JP 10068980 A JP10068980 A JP 10068980A JP 10068980 A JP10068980 A JP 10068980A JP S5727441 A JPS5727441 A JP S5727441A
Authority
JP
Japan
Prior art keywords
phase
signal
bpf
amplifier
supplied
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
JP10068980A
Other languages
Japanese (ja)
Other versions
JPS6349292B2 (en
Inventor
Ryoichi Imanaka
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 JP10068980A priority Critical patent/JPS5727441A/en
Publication of JPS5727441A publication Critical patent/JPS5727441A/en
Publication of JPS6349292B2 publication Critical patent/JPS6349292B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To stabilize the loop gain of a tracking servo system for an optical disk reproducing device of wobbling system, by inserting a BPF having the prescribed phase properties before giving a phase detection to the detected signal. CONSTITUTION:The signal detected by a photodetector 5 is demodulated to an information signal by a demodulator 9 via an amplifier 8 and supplied to a PLL shown by A a separation of the synchronous signal carried out through a synchronous separator 10. The output of the PLL is supplied to phase detector 16 along with the signal detected by an envelope curve detector 14 and passed through a BPF15 and amplified through an amplifier 18 after passing through a phase compensator 17 to drive a tracking mirror 6. The phase properties of the BPF is set at least to + or -60 deg. in terms of the center frequency + or - the band width of a tracking servo system.
JP10068980A 1980-07-22 1980-07-22 Reproducing device Granted JPS5727441A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10068980A JPS5727441A (en) 1980-07-22 1980-07-22 Reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10068980A JPS5727441A (en) 1980-07-22 1980-07-22 Reproducing device

Publications (2)

Publication Number Publication Date
JPS5727441A true JPS5727441A (en) 1982-02-13
JPS6349292B2 JPS6349292B2 (en) 1988-10-04

Family

ID=14280690

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10068980A Granted JPS5727441A (en) 1980-07-22 1980-07-22 Reproducing device

Country Status (1)

Country Link
JP (1) JPS5727441A (en)

Also Published As

Publication number Publication date
JPS6349292B2 (en) 1988-10-04

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