JPS5778651A - Reproducing device of information recording medium - Google Patents

Reproducing device of information recording medium

Info

Publication number
JPS5778651A
JPS5778651A JP15487580A JP15487580A JPS5778651A JP S5778651 A JPS5778651 A JP S5778651A JP 15487580 A JP15487580 A JP 15487580A JP 15487580 A JP15487580 A JP 15487580A JP S5778651 A JPS5778651 A JP S5778651A
Authority
JP
Japan
Prior art keywords
amplifying
signal
pickup device
frequency component
output
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
JP15487580A
Other languages
Japanese (ja)
Inventor
Kazuo Yamada
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.)
Victor Company of Japan Ltd
Nippon Victor KK
Original Assignee
Victor Company of Japan Ltd
Nippon Victor KK
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 Victor Company of Japan Ltd, Nippon Victor KK filed Critical Victor Company of Japan Ltd
Priority to JP15487580A priority Critical patent/JPS5778651A/en
Publication of JPS5778651A publication Critical patent/JPS5778651A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/02—Analogue recording or reproducing

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)

Abstract

PURPOSE:To obstruct an unnecessary frequency component, and to obtain a reproducing signal having a good quality, by providing an element for obstructing an output oscillation frequency component from a pickup device, in front of the first stage amplifying element of an amplifying circuit for amplifying a signal of the pickup device. CONSTITUTION:In an amplifying circuit 3' for amplifying an output of a pickup device which fetches a signal on a disk-like information recording medium, as a variation of electrostatic capacity, a bead core 8 is connected in front of an amplifying element 9 (FET) of the first stage of this circuit 3', that is to say, to the gate line. This bead core 8 is an element for generating prescribed inductance against the high frequency, and obstructs an output oscillation frequency component from an oscillator of the pickup device. In this way, an unnecessary frequency component is obstructed from a signal inputted to an input terminal 3a' of the amplifying circuit 3', the signal is outputted to its output terminal 3b', therefore, neither oscillation phenomenon nor beat occurs, and a reproducing signal having a good quality is obtained.
JP15487580A 1980-11-04 1980-11-04 Reproducing device of information recording medium Pending JPS5778651A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15487580A JPS5778651A (en) 1980-11-04 1980-11-04 Reproducing device of information recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15487580A JPS5778651A (en) 1980-11-04 1980-11-04 Reproducing device of information recording medium

Publications (1)

Publication Number Publication Date
JPS5778651A true JPS5778651A (en) 1982-05-17

Family

ID=15593837

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15487580A Pending JPS5778651A (en) 1980-11-04 1980-11-04 Reproducing device of information recording medium

Country Status (1)

Country Link
JP (1) JPS5778651A (en)

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