JPS57143762A - Information signal recording disc reproducing device - Google Patents

Information signal recording disc reproducing device

Info

Publication number
JPS57143762A
JPS57143762A JP2735281A JP2735281A JPS57143762A JP S57143762 A JPS57143762 A JP S57143762A JP 2735281 A JP2735281 A JP 2735281A JP 2735281 A JP2735281 A JP 2735281A JP S57143762 A JPS57143762 A JP S57143762A
Authority
JP
Japan
Prior art keywords
circuit
signal
constitution
disc
length
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
JP2735281A
Other languages
Japanese (ja)
Other versions
JPS6348111B2 (en
Inventor
Nobuaki Takahashi
Atsumi Hirata
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 JP2735281A priority Critical patent/JPS57143762A/en
Priority to NL8200761A priority patent/NL8200761A/en
Priority to CA000397082A priority patent/CA1177955A/en
Priority to AU80787/82A priority patent/AU545710B2/en
Priority to FR8203136A priority patent/FR2500675B1/en
Publication of JPS57143762A publication Critical patent/JPS57143762A/en
Publication of JPS6348111B2 publication Critical patent/JPS6348111B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/04—Automatic feed mechanism producing a progressive transducing traverse of the head in a direction which cuts across the direction of travel of the recording medium, e.g. helical scan, e.g. by lead-screw
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/08—Track changing or selecting during transducing operation
    • G11B21/081—Access to indexed tracks or parts of continuous track
    • G11B21/083—Access to indexed tracks or parts of continuous track on discs
    • G11B21/085—Access to indexed tracks or parts of continuous track on discs with track following of accessed part
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/10—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following
    • G11B21/106—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following on disks

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
  • Moving Of Head For Track Selection And Changing (AREA)

Abstract

PURPOSE: To achieve low cost for the constitution of a circuit, by controlling a reproducing element so that it is moved with a prescribed speed determined in advance depending on the length of duration period detected with a burst signal radially on a recording disc.
CONSTITUTION: A static capacitance formed between an electrode of a reproducing stylus 31 and a disc 29 is converted into a signal in high frequency with a pickup circuit and the signal is applied to a demodulation circuit 33, band pass filters 34 and 35, and an fp3 detector 36. An output detecting signal FP3 of the detector 36 is applied to an fp3 length detecting circuit 41, where a duration time (burst length) at one revolution period of a disc of the fp3 detecting signal FP3 to be reproduced is detected. A control circuit 42 consists of, e.g., a microcomputer and a prescribed feed control is made according to a detection signal from the said circuit 41. With the constitution like this, an economical circuit can be achieved.
COPYRIGHT: (C)1982,JPO&Japio
JP2735281A 1981-02-26 1981-02-26 Information signal recording disc reproducing device Granted JPS57143762A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2735281A JPS57143762A (en) 1981-02-26 1981-02-26 Information signal recording disc reproducing device
NL8200761A NL8200761A (en) 1981-02-26 1982-02-25 REPRODUCER FOR A ROTARY RECORD MEDIUM.
CA000397082A CA1177955A (en) 1981-02-26 1982-02-25 Rotary recording medium reproducing apparatus
AU80787/82A AU545710B2 (en) 1981-02-26 1982-02-25 Pcm optical disk system with reference signal track
FR8203136A FR2500675B1 (en) 1981-02-26 1982-02-25 APPARATUS FOR REPRODUCING OR READING A ROTARY RECORDING MEDIUM

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2735281A JPS57143762A (en) 1981-02-26 1981-02-26 Information signal recording disc reproducing device

Publications (2)

Publication Number Publication Date
JPS57143762A true JPS57143762A (en) 1982-09-06
JPS6348111B2 JPS6348111B2 (en) 1988-09-27

Family

ID=12218640

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2735281A Granted JPS57143762A (en) 1981-02-26 1981-02-26 Information signal recording disc reproducing device

Country Status (5)

Country Link
JP (1) JPS57143762A (en)
AU (1) AU545710B2 (en)
CA (1) CA1177955A (en)
FR (1) FR2500675B1 (en)
NL (1) NL8200761A (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2850363C2 (en) * 1977-11-22 1986-04-17 Victor Company Of Japan, Ltd., Yokohama, Kanagawa Random access arrangement for an apparatus for reproducing information from a rotating recording medium
FR2452838A1 (en) * 1979-03-30 1980-10-24 Thomson Csf Video disc sound recording - uses TDM to separate sounds recorded on different channels and subcarrier reference signals to discriminate between sounds
JPS56111170A (en) * 1980-02-07 1981-09-02 Victor Co Of Japan Ltd Controller for playback element in playback device

Also Published As

Publication number Publication date
AU545710B2 (en) 1985-07-25
FR2500675B1 (en) 1985-11-29
JPS6348111B2 (en) 1988-09-27
CA1177955A (en) 1984-11-13
AU8078782A (en) 1982-09-02
NL8200761A (en) 1982-09-16
FR2500675A1 (en) 1982-08-27

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