JPS558679A - Magnetic tape control system - Google Patents
Magnetic tape control systemInfo
- Publication number
- JPS558679A JPS558679A JP8230078A JP8230078A JPS558679A JP S558679 A JPS558679 A JP S558679A JP 8230078 A JP8230078 A JP 8230078A JP 8230078 A JP8230078 A JP 8230078A JP S558679 A JPS558679 A JP S558679A
- Authority
- JP
- Japan
- Prior art keywords
- tape
- bot
- capstan
- magnetic tape
- information
- 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
Landscapes
- Digital Magnetic Recording (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
PURPOSE: To stop the generation of the residual part of old information when information is recorded on a magnetic tape, by moving temporarily the tape in the reverse direction after the detection of the tape start dependent upon a reflection marker and erasing preceding information while moving the tape in the forward direction.
CONSTITUTION: Magnetic tape 1 is provided with bigining of tape marker BOT such as an aluminum foil, and the defect to leave previously recorded data as it is cancelled by the following means in the part of the tape corresponding to length b of this BOT. photo sensor 3 detects the BOT at the leading edge and amplifies it in 9, and the amplified output is transferred to flip flop 10 to generate logical "1" at AND gate 8. OR gate 12 transfers a reverse-direction rotation signal to capstan control circuit 13. When command T3 is applied, flip flop 14 outputs a driving signal of capstan 7, and the capstan is caused to run in the reverse direction.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8230078A JPS558679A (en) | 1978-07-06 | 1978-07-06 | Magnetic tape control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8230078A JPS558679A (en) | 1978-07-06 | 1978-07-06 | Magnetic tape control system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS558679A true JPS558679A (en) | 1980-01-22 |
JPS6123566B2 JPS6123566B2 (en) | 1986-06-06 |
Family
ID=13770693
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8230078A Granted JPS558679A (en) | 1978-07-06 | 1978-07-06 | Magnetic tape control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS558679A (en) |
-
1978
- 1978-07-06 JP JP8230078A patent/JPS558679A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6123566B2 (en) | 1986-06-06 |
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