JPS5499535A - Disk unit containing timing device - Google Patents
Disk unit containing timing deviceInfo
- Publication number
- JPS5499535A JPS5499535A JP643178A JP643178A JPS5499535A JP S5499535 A JPS5499535 A JP S5499535A JP 643178 A JP643178 A JP 643178A JP 643178 A JP643178 A JP 643178A JP S5499535 A JPS5499535 A JP S5499535A
- Authority
- JP
- Japan
- Prior art keywords
- data
- access time
- unit
- time
- data block
- 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 present the access time of the previous time as part of the control information at the data access time and thus the user can decide the oldness of the data based on the control information.
CONSTITUTION: Data read/write unit 4 reveives the data writing indication signal and the writing data block from the computer via junction unit 5 to write the data block into the designated disc address. At the same time, the time given from timing device 7 is converted 6 into the memory formation to be transferred to unit 4. Unit 4 writes this access time into access time recording discs 11W1n against the corredponding data block. In case unit 4 receives the data reading indication signal, it reads out the corresponding data block from the designated disc address and also reads out the access time of the corresponding block from discs 11W1n which record the access time.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP643178A JPS5499535A (en) | 1978-01-23 | 1978-01-23 | Disk unit containing timing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP643178A JPS5499535A (en) | 1978-01-23 | 1978-01-23 | Disk unit containing timing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5499535A true JPS5499535A (en) | 1979-08-06 |
Family
ID=11638195
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP643178A Pending JPS5499535A (en) | 1978-01-23 | 1978-01-23 | Disk unit containing timing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5499535A (en) |
-
1978
- 1978-01-23 JP JP643178A patent/JPS5499535A/en active Pending
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