JPS54125016A - Medium erasing system - Google Patents
Medium erasing systemInfo
- Publication number
- JPS54125016A JPS54125016A JP3341578A JP3341578A JPS54125016A JP S54125016 A JPS54125016 A JP S54125016A JP 3341578 A JP3341578 A JP 3341578A JP 3341578 A JP3341578 A JP 3341578A JP S54125016 A JPS54125016 A JP S54125016A
- Authority
- JP
- Japan
- Prior art keywords
- erase
- control circuit
- mtucont
- value
- memory
- 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
- Digital Magnetic Recording (AREA)
Abstract
PURPOSE: To reduce program memory regions and make the formation of programs easy by determining the erase range on recording range depending upon the contents of the memory.
CONSTITUTION: The erase command ERSCMD inputted from the channel CH side to the interface control circuit IF.CONT of a controller MTC is stored in a magnetic tape apparatus control circuit MTUCONT and the value of a channel command word CCW in an erase length memory circuit ERSMEM respectively. An erase running instruction is given from the control circuit MTUCONT to a capstan motor M and pulses are generated from a tacho pulse generator TCH according to the number of revolutions of the motor M. The pulses are then counted with an erase length counter ERSCTR. The value having been stored in the erase length memory circuit ERSMEM and the value of the erase length counter ERSCTR are compared in a comparator CMP and when these coincide, a running stop instruction is given to the control circuit MTUCONT.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3341578A JPS54125016A (en) | 1978-03-22 | 1978-03-22 | Medium erasing system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3341578A JPS54125016A (en) | 1978-03-22 | 1978-03-22 | Medium erasing system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54125016A true JPS54125016A (en) | 1979-09-28 |
Family
ID=12385935
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3341578A Pending JPS54125016A (en) | 1978-03-22 | 1978-03-22 | Medium erasing system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54125016A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7768733B2 (en) | 2005-03-18 | 2010-08-03 | Fujitsu Limited | Method for erasing data from magnetic tape storage media |
-
1978
- 1978-03-22 JP JP3341578A patent/JPS54125016A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7768733B2 (en) | 2005-03-18 | 2010-08-03 | Fujitsu Limited | Method for erasing data from magnetic tape storage media |
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