JPS6413253A - Floppy disk driving device - Google Patents
Floppy disk driving deviceInfo
- Publication number
- JPS6413253A JPS6413253A JP16911787A JP16911787A JPS6413253A JP S6413253 A JPS6413253 A JP S6413253A JP 16911787 A JP16911787 A JP 16911787A JP 16911787 A JP16911787 A JP 16911787A JP S6413253 A JPS6413253 A JP S6413253A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- cpu
- turned
- floppy disk
- disk
- 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
- Rotational Drive Of Disk (AREA)
Abstract
PURPOSE:To extend the service life of a disk and to reduce a power consumption by providing the function automatically stopping the spindle motor for rotating a disk at the time when non-operation state reaches a fixed time on the timer circuit provided inside a control circuit. CONSTITUTION:When a CPU 1 gains access to a floppy driving controller 6, a turned-ON selective signal is reset to a timer circuit 12 and with the access completion, the reset is released and unless a signal 13 is turned ON until the number of counts becomes of a set number an interruption signal 14 into the CPU 1 is turned ON. The CPU 1 starts an interruption processing by receiving it, turning OFF a motor-ON signal 11 via a parallel interface PIO 7 and stopping the spindle motor inside a floppy disk drive 10. The efficiency reduction of a software is eliminated, the service life of a floppy disk is extended and power consumption is reduced.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16911787A JPS6413253A (en) | 1987-07-07 | 1987-07-07 | Floppy disk driving device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16911787A JPS6413253A (en) | 1987-07-07 | 1987-07-07 | Floppy disk driving device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6413253A true JPS6413253A (en) | 1989-01-18 |
Family
ID=15880613
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16911787A Pending JPS6413253A (en) | 1987-07-07 | 1987-07-07 | Floppy disk driving device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6413253A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5452277A (en) * | 1993-12-30 | 1995-09-19 | International Business Machines Corporation | Adaptive system for optimizing disk drive power consumption |
US5682273A (en) * | 1995-06-30 | 1997-10-28 | International Business Machines Corporation | Disk drive for portable computer with adaptive demand-driven power management |
US5954820A (en) * | 1997-09-26 | 1999-09-21 | International Business Machines Corporation | Portable computer with adaptive demand-driven power management |
-
1987
- 1987-07-07 JP JP16911787A patent/JPS6413253A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5452277A (en) * | 1993-12-30 | 1995-09-19 | International Business Machines Corporation | Adaptive system for optimizing disk drive power consumption |
US5521896A (en) * | 1993-12-30 | 1996-05-28 | International Business Machines Corporation | Adaptive system for optimizing disk drive power consumption |
US5544138A (en) * | 1993-12-30 | 1996-08-06 | International Business Machines Corporation | Adaptive system for optimizing disk drive power consumption |
US5682273A (en) * | 1995-06-30 | 1997-10-28 | International Business Machines Corporation | Disk drive for portable computer with adaptive demand-driven power management |
US5954820A (en) * | 1997-09-26 | 1999-09-21 | International Business Machines Corporation | Portable computer with adaptive demand-driven power management |
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