JPS643879A - Magnetic tape controller - Google Patents
Magnetic tape controllerInfo
- Publication number
- JPS643879A JPS643879A JP15854387A JP15854387A JPS643879A JP S643879 A JPS643879 A JP S643879A JP 15854387 A JP15854387 A JP 15854387A JP 15854387 A JP15854387 A JP 15854387A JP S643879 A JPS643879 A JP S643879A
- Authority
- JP
- Japan
- Prior art keywords
- data
- magnetic tape
- block
- dissidence
- flaw
- 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 eliminate a waste of a magnetic tape and to improve its utilization efficiency by dividing a data block and rewriting the magnetic tape when two data are compared to detect their dissidence and the counted value of a counter exceeds a reference value. CONSTITUTION:Data of a data processing system 3 is written in a buffer 11 and compared by a comparator 12 with data of the magnetic tape 21, and added to the counter 13. When the comparator detects dissidence and its counted value exceeds the reference value, it is considered that a data block 211 has a flaw 214 and the block is divided into data blocks 212 and 213; and pieces of division information 215 and 216 are added thereto and the block 213 is erased temporarily and rewritten on the tape 21. Therefore, even if trouble such as a flaw is generated at very part of the magnetic tape, the whole area corresponding to one data block is not disabled, so data can be recorded efficiently.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15854387A JPS643879A (en) | 1987-06-24 | 1987-06-24 | Magnetic tape controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15854387A JPS643879A (en) | 1987-06-24 | 1987-06-24 | Magnetic tape controller |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS643879A true JPS643879A (en) | 1989-01-09 |
Family
ID=15674005
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15854387A Pending JPS643879A (en) | 1987-06-24 | 1987-06-24 | Magnetic tape controller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS643879A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0536215A (en) * | 1991-01-22 | 1993-02-12 | Samsung Electron Co Ltd | Data recorder and its method |
-
1987
- 1987-06-24 JP JP15854387A patent/JPS643879A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0536215A (en) * | 1991-01-22 | 1993-02-12 | Samsung Electron Co Ltd | Data recorder and its method |
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