JPS54111806A - Magnetic recorder_reproducer - Google Patents

Magnetic recorder_reproducer

Info

Publication number
JPS54111806A
JPS54111806A JP1872078A JP1872078A JPS54111806A JP S54111806 A JPS54111806 A JP S54111806A JP 1872078 A JP1872078 A JP 1872078A JP 1872078 A JP1872078 A JP 1872078A JP S54111806 A JPS54111806 A JP S54111806A
Authority
JP
Japan
Prior art keywords
reel
tape
calculating
revolution
circuit
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
JP1872078A
Other languages
Japanese (ja)
Other versions
JPS6052489B2 (en
Inventor
Etsuo Shibazaki
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 JP53018720A priority Critical patent/JPS6052489B2/en
Publication of JPS54111806A publication Critical patent/JPS54111806A/en
Publication of JPS6052489B2 publication Critical patent/JPS6052489B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To limit the torque of motor and stabilize tension of each reel size by calculating the total tape quantity of a supply reel and a take-up reel, comparing the same with the value having beforehand been stored and discriminating the reel size.
CONSTITUTION: The revolutions of a supply reel 11s and a take-up reel 11t which are driven independently by motors 20s ans 20t are detected with revolution detectors 21s, 21t. The pulses obtainable from these revolution detectors are supplied as revolution signals via counters 22s, 22t to a calculating circuit 26. The running speeds of a tape 14 are supplied from a counter 25 to the calculating circuit 26 as the revolutions of a roller 23 are detected with a revolution detector 24. The outputs of the circuit 26 are compared with the values of a memory circuit 32 which has beforehand stored the tape area of each reel size, in a comparator 31 and the motors 20s, 20t are controlled by torque limiters 33s, 33t. Hence, by calculating the entire tape quantity with the calculating circuit 26, the torque suited for each reel size is obtained and the tape tension may be stabilized.
COPYRIGHT: (C)1979,JPO&Japio
JP53018720A 1978-02-21 1978-02-21 magnetic recording and reproducing device Expired JPS6052489B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53018720A JPS6052489B2 (en) 1978-02-21 1978-02-21 magnetic recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53018720A JPS6052489B2 (en) 1978-02-21 1978-02-21 magnetic recording and reproducing device

Publications (2)

Publication Number Publication Date
JPS54111806A true JPS54111806A (en) 1979-09-01
JPS6052489B2 JPS6052489B2 (en) 1985-11-19

Family

ID=11979487

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53018720A Expired JPS6052489B2 (en) 1978-02-21 1978-02-21 magnetic recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS6052489B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56163551A (en) * 1980-05-21 1981-12-16 Akai Electric Co Ltd Motor driving circuit for reel turntable of tape recorder
JPS58105449A (en) * 1981-12-15 1983-06-23 Fujitsu Ltd Inter-reel tape direct driver
US4525654A (en) * 1981-12-09 1985-06-25 Hitachi, Ltd. Tape transport control unit
JPS61157119A (en) * 1984-12-28 1986-07-16 Nec Corp Analog-digital converting circuit
JPS63234433A (en) * 1987-03-23 1988-09-29 Sony Corp Calculator for tape winding diameter
US5222684A (en) * 1990-03-19 1993-06-29 Matsushita Electric Industrial Co., Ltd. Tape driving apparatus for tape medium record reproducing apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63141390U (en) * 1987-03-09 1988-09-19

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56163551A (en) * 1980-05-21 1981-12-16 Akai Electric Co Ltd Motor driving circuit for reel turntable of tape recorder
US4525654A (en) * 1981-12-09 1985-06-25 Hitachi, Ltd. Tape transport control unit
JPS58105449A (en) * 1981-12-15 1983-06-23 Fujitsu Ltd Inter-reel tape direct driver
JPS6350779B2 (en) * 1981-12-15 1988-10-11 Fujitsu Ltd
JPS61157119A (en) * 1984-12-28 1986-07-16 Nec Corp Analog-digital converting circuit
JPS63234433A (en) * 1987-03-23 1988-09-29 Sony Corp Calculator for tape winding diameter
US5222684A (en) * 1990-03-19 1993-06-29 Matsushita Electric Industrial Co., Ltd. Tape driving apparatus for tape medium record reproducing apparatus

Also Published As

Publication number Publication date
JPS6052489B2 (en) 1985-11-19

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