JPS6476447A - Back tension controller - Google Patents

Back tension controller

Info

Publication number
JPS6476447A
JPS6476447A JP62233265A JP23326587A JPS6476447A JP S6476447 A JPS6476447 A JP S6476447A JP 62233265 A JP62233265 A JP 62233265A JP 23326587 A JP23326587 A JP 23326587A JP S6476447 A JPS6476447 A JP S6476447A
Authority
JP
Japan
Prior art keywords
ratio
tape
frequency range
back tension
supply reel
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
JP62233265A
Other languages
Japanese (ja)
Inventor
Hideaki Kanda
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.)
Alpine Electronics Inc
Original Assignee
Alpine Electronics Inc
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 Alpine Electronics Inc filed Critical Alpine Electronics Inc
Priority to JP62233265A priority Critical patent/JPS6476447A/en
Publication of JPS6476447A publication Critical patent/JPS6476447A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To surely read a subcode in the vicinity of an entrance by changing the driving voltage of a supply reel motor in accordance with the winding diameter of a tape to apply an approximately fixed back tension to the tape. CONSTITUTION:A control part 8 reads counted values N1 and N2 of first and second counters 5 and 6 and instructs first and second counters 5 and 6 to count a supply reel pulse SRP and a take-up reel pulse TRP generated for a prescribed time and calculates a ratio of counted values N1 and N2 and sets this ratio as the current frequency ratio and checks whether it is switched to the next frequency range or not. When the current frequency ratio is shifted to the next frequency range, driving voltage data corresponding to the new frequency range is read out of a storage circuit 7 and is inputted to a motor driving circuit 9 and a supply reel motor 2 is driven to apply an approximately fixed back tension to the tape.
JP62233265A 1987-09-17 1987-09-17 Back tension controller Pending JPS6476447A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62233265A JPS6476447A (en) 1987-09-17 1987-09-17 Back tension controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62233265A JPS6476447A (en) 1987-09-17 1987-09-17 Back tension controller

Publications (1)

Publication Number Publication Date
JPS6476447A true JPS6476447A (en) 1989-03-22

Family

ID=16952375

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62233265A Pending JPS6476447A (en) 1987-09-17 1987-09-17 Back tension controller

Country Status (1)

Country Link
JP (1) JPS6476447A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02132340U (en) * 1989-03-31 1990-11-02

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS576458A (en) * 1980-06-13 1982-01-13 Victor Co Of Japan Ltd Tape tension control system of recording and reproducing device
JPS61278070A (en) * 1985-05-31 1986-12-08 Canon Inc Reel drive device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS576458A (en) * 1980-06-13 1982-01-13 Victor Co Of Japan Ltd Tape tension control system of recording and reproducing device
JPS61278070A (en) * 1985-05-31 1986-12-08 Canon Inc Reel drive device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02132340U (en) * 1989-03-31 1990-11-02

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