JPS56114174A - Recording and reproducing device - Google Patents

Recording and reproducing device

Info

Publication number
JPS56114174A
JPS56114174A JP1682180A JP1682180A JPS56114174A JP S56114174 A JPS56114174 A JP S56114174A JP 1682180 A JP1682180 A JP 1682180A JP 1682180 A JP1682180 A JP 1682180A JP S56114174 A JPS56114174 A JP S56114174A
Authority
JP
Japan
Prior art keywords
frequency
rotation
motor
output
turntable
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
JP1682180A
Other languages
Japanese (ja)
Other versions
JPS627630B2 (en
Inventor
Ryoichi Imanaka
Seizo Tsuji
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 JP1682180A priority Critical patent/JPS56114174A/en
Publication of JPS56114174A publication Critical patent/JPS56114174A/en
Publication of JPS627630B2 publication Critical patent/JPS627630B2/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

Landscapes

  • Rotational Drive Of Disk (AREA)

Abstract

PURPOSE:To give high precision to the control of the track pitch, by operating the feeding motor of the head device synchronously with the turntable motor with the rotaion frequency determined by the multiplying number of the variable multiplying circuit and the frequency division ratio of the frequency divider. CONSTITUTION:The frequency proportional to rotation of turntable motor 2 which rotates turntable 1 is output from rotation detector 3, and this output is multiplied into a required integral-multiple frequency by variable frequency multiplying circuit 4. Meanwhile, head device 6 is driven through feeding screw 7 and decelerator 8 according to rotation of feeding motor 9, and the output of rotation detector 10 which outputs the frequency proportional to rotation of motor 9 is input to phase comparator 11. This input and the output of frequency divider 5 are compared with each other by detect the rotation error, and this rotation error is input to feeding motor 9 through driving circuit 12, and thus, feeding motor 9 is operated synchronously with turntable motor 2.
JP1682180A 1980-02-13 1980-02-13 Recording and reproducing device Granted JPS56114174A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1682180A JPS56114174A (en) 1980-02-13 1980-02-13 Recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1682180A JPS56114174A (en) 1980-02-13 1980-02-13 Recording and reproducing device

Publications (2)

Publication Number Publication Date
JPS56114174A true JPS56114174A (en) 1981-09-08
JPS627630B2 JPS627630B2 (en) 1987-02-18

Family

ID=11926830

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1682180A Granted JPS56114174A (en) 1980-02-13 1980-02-13 Recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS56114174A (en)

Also Published As

Publication number Publication date
JPS627630B2 (en) 1987-02-18

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