JPS54111806A - Magnetic recorder_reproducer - Google Patents
Magnetic recorder_reproducerInfo
- 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
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
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63141390U (en) * | 1987-03-09 | 1988-09-19 |
-
1978
- 1978-02-21 JP JP53018720A patent/JPS6052489B2/en not_active Expired
Cited By (7)
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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS54145513A (en) | Recorder-reproducer | |
JPS52134414A (en) | Magnetic tape device | |
JPS5492311A (en) | Winding quantity display system of magnetic tape | |
JPS5425806A (en) | Control system of reel motor | |
JPS54111806A (en) | Magnetic recorder_reproducer | |
JPS539104A (en) | Cassette tape running speed detector | |
JPS51117610A (en) | Tape quantity indication unit | |
JPS54145118A (en) | Winding quantity measuring system of magnetic tape | |
JPS5446016A (en) | Magnetic recorder-reproducer | |
JPS54111805A (en) | Automatic player of tape recorder and others | |
JPS5680862A (en) | Remaining time display system of cassette tape | |
JPS5340509A (en) | Tape take-up device | |
JPS5690455A (en) | Magnetic tape device | |
JPS5647976A (en) | Recording position detection system | |
JPS5694534A (en) | Tape driving device | |
JPS5558861A (en) | Calculator for amount of tape | |
JPS5476112A (en) | Automatic program searching method of cassette tape recorder | |
JPS5641569A (en) | Display system for remainder time of cassette tape | |
JPS5476122A (en) | Detecting method of take-up quantities of cassette tape | |
JPS5453515A (en) | Tape recorder | |
EP0399807A3 (en) | Cassette discriminating apparatus for magnetic recorders | |
JPS5698762A (en) | Tape reel discrimination system | |
JPS54133109A (en) | Magnetic recorder-reproducer | |
JPS53100813A (en) | Magnetic tape apparatus | |
JPS5622275A (en) | Detector for tape running amount |