JPS6467745A - Device for detecting magnetic tape edge - Google Patents
Device for detecting magnetic tape edgeInfo
- Publication number
- JPS6467745A JPS6467745A JP62224345A JP22434587A JPS6467745A JP S6467745 A JPS6467745 A JP S6467745A JP 62224345 A JP62224345 A JP 62224345A JP 22434587 A JP22434587 A JP 22434587A JP S6467745 A JPS6467745 A JP S6467745A
- Authority
- JP
- Japan
- Prior art keywords
- speed
- light
- tape
- emitting element
- light emitting
- 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
Abstract
PURPOSE:To reduce power consumption by changing the light-on and light-off time of a luminous element and the repeating time of them according to a tape speed with the control device of the luminous element. CONSTITUTION:A tape speed discriminating means 1 is composed of a first reel revolving number detecting means 2, a second reel revolving speed detecting means 3, a tape constant setting means 4 and a tape speed detecting means 5 to detect the tape speed from these outputs. On the other hand, a light-on and light-off timing setting means 6 is composed of a light-off time setting means 7 and a light emitting element driving means 8 to drive the light emitting element 11 intermittently. For example, when the tape traveling speed is a constant speed, the emitting period of the light emitting element 11 is made long and when the tape traveling speed is a high speed, the emitting period of the light emitting element 11 is made short comparatively. Thus, the low power consumption can be obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62224345A JPS6467745A (en) | 1987-09-08 | 1987-09-08 | Device for detecting magnetic tape edge |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62224345A JPS6467745A (en) | 1987-09-08 | 1987-09-08 | Device for detecting magnetic tape edge |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6467745A true JPS6467745A (en) | 1989-03-14 |
Family
ID=16812306
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62224345A Pending JPS6467745A (en) | 1987-09-08 | 1987-09-08 | Device for detecting magnetic tape edge |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6467745A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0337853A (en) * | 1989-07-05 | 1991-02-19 | Akai Electric Co Ltd | Detector for end part of magnetic tape |
-
1987
- 1987-09-08 JP JP62224345A patent/JPS6467745A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0337853A (en) * | 1989-07-05 | 1991-02-19 | Akai Electric Co Ltd | Detector for end part of magnetic tape |
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