JPS56127924A - Tape speed detecting circuit - Google Patents

Tape speed detecting circuit

Info

Publication number
JPS56127924A
JPS56127924A JP3189980A JP3189980A JPS56127924A JP S56127924 A JPS56127924 A JP S56127924A JP 3189980 A JP3189980 A JP 3189980A JP 3189980 A JP3189980 A JP 3189980A JP S56127924 A JPS56127924 A JP S56127924A
Authority
JP
Japan
Prior art keywords
speed detecting
tape
capstan
motor
tape speed
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
JP3189980A
Other languages
Japanese (ja)
Other versions
JPS6319929B2 (en
Inventor
Sadao Hosoi
Masayuki Takano
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP3189980A priority Critical patent/JPS56127924A/en
Publication of JPS56127924A publication Critical patent/JPS56127924A/en
Publication of JPS6319929B2 publication Critical patent/JPS6319929B2/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
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/1808—Driving of both record carrier and head

Landscapes

  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)

Abstract

PURPOSE:To obtain a tape speed detecting circuit having a high operating stability with a simple structure, by changing the period of the pulse signal obtained with a frequency proportional to the rotating speed of a capstan into the voltage to obtain a tape speed detecting voltage. CONSTITUTION:The magnetic tape 1 is wond round the outer circumferences of the upper and lower drums 2 and 3 in an angle range of about 180 deg.. The upper drum 2 is driven by the drum motor 6. The tape 1 is forwarded by the capstan 7, and the capstan 7 is turned in a prescribed speed by the capstan motor 8. The rotating speed of the motor 8 is detected by the frequency generator 9; and the phase of rotation of the motor 6 is detected by the pulse generator (PG) head 12. Then the change-over pulse RF-SW is produced through the head change-over signal producing circuit 13 for the A and B heads 4A and 4B. The tape speed detecting voltage is obtained through such constitution as mentioned above. As a result, a tape speed detecting circuit can be obtained with a high operating stability and a comparatively simple constitution.
JP3189980A 1980-03-13 1980-03-13 Tape speed detecting circuit Granted JPS56127924A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3189980A JPS56127924A (en) 1980-03-13 1980-03-13 Tape speed detecting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3189980A JPS56127924A (en) 1980-03-13 1980-03-13 Tape speed detecting circuit

Publications (2)

Publication Number Publication Date
JPS56127924A true JPS56127924A (en) 1981-10-07
JPS6319929B2 JPS6319929B2 (en) 1988-04-25

Family

ID=12343851

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3189980A Granted JPS56127924A (en) 1980-03-13 1980-03-13 Tape speed detecting circuit

Country Status (1)

Country Link
JP (1) JPS56127924A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62147974U (en) * 1985-12-31 1987-09-18

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51160527U (en) * 1975-06-14 1976-12-21
JPS52134407A (en) * 1976-05-03 1977-11-10 Ampex Tape deck
JPS5368208A (en) * 1976-11-30 1978-06-17 Olympus Optical Co Ltd Tape recorder with miniature electronic computer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51160527U (en) * 1975-06-14 1976-12-21
JPS52134407A (en) * 1976-05-03 1977-11-10 Ampex Tape deck
JPS5368208A (en) * 1976-11-30 1978-06-17 Olympus Optical Co Ltd Tape recorder with miniature electronic computer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62147974U (en) * 1985-12-31 1987-09-18

Also Published As

Publication number Publication date
JPS6319929B2 (en) 1988-04-25

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