JPS5446016A - Magnetic recorder-reproducer - Google Patents
Magnetic recorder-reproducerInfo
- Publication number
- JPS5446016A JPS5446016A JP11282377A JP11282377A JPS5446016A JP S5446016 A JPS5446016 A JP S5446016A JP 11282377 A JP11282377 A JP 11282377A JP 11282377 A JP11282377 A JP 11282377A JP S5446016 A JPS5446016 A JP S5446016A
- Authority
- JP
- Japan
- Prior art keywords
- reels
- tape
- revolutions
- numbers
- processor
- 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
Links
Landscapes
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
- Tension Adjustment In Filamentary Materials (AREA)
Abstract
PURPOSE: To stabilize tape tension by detecting the numbers of revolutions of reels and controlling the voltages to be applied to reel motors by way of a microprocessor.
CONSTITUTION: When the tape speed detection signal detected by an encoder 16 turning cooperatively with a reversing roller is applied to a microprocessor 24, the processor 24 selects the frequency divided outputs of the reference frequency signal of an oscillator 47 via changeover circuit 44 according to the tape speeds. On the other hand, the pulses of the period corresponding to reel rotating speeds by the optical detection of the slit of a disk 38 turning together with reels become gate periods and the frequency divided outputs ouptutted by the ccircuit 44 are counted with a counter 45, then the signlas corresponding to the numbers of revolutions of the reels are applied to the processor 24. Then, the processor 24 controls the voltages to be applied to reel motors according to the numbers of revolutions of the reels, according to the numbers of the revolutions of the reels propertional to the tape quantities of the reels. As a result, the tension of the tape proportional to the tape quantities of the reels is easily, surely and constantly controlled
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11282377A JPS5446016A (en) | 1977-09-19 | 1977-09-19 | Magnetic recorder-reproducer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11282377A JPS5446016A (en) | 1977-09-19 | 1977-09-19 | Magnetic recorder-reproducer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5446016A true JPS5446016A (en) | 1979-04-11 |
Family
ID=14596419
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11282377A Pending JPS5446016A (en) | 1977-09-19 | 1977-09-19 | Magnetic recorder-reproducer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5446016A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56114147A (en) * | 1980-02-09 | 1981-09-08 | Otani Denki Kk | Tape tension control system |
JPS56127954A (en) * | 1980-03-07 | 1981-10-07 | Teac Co | Tape recorder |
US8089726B2 (en) * | 2008-03-25 | 2012-01-03 | Oracle America, Inc. | Method for counteracting longitudinal oscillations of magnetic tape in a tape drive system |
-
1977
- 1977-09-19 JP JP11282377A patent/JPS5446016A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56114147A (en) * | 1980-02-09 | 1981-09-08 | Otani Denki Kk | Tape tension control system |
JPS56127954A (en) * | 1980-03-07 | 1981-10-07 | Teac Co | Tape recorder |
US8089726B2 (en) * | 2008-03-25 | 2012-01-03 | Oracle America, Inc. | Method for counteracting longitudinal oscillations of magnetic tape in a tape drive system |
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