Invention Grant
- Patent Title: Storage apparatus, image forming apparatus, abnormality detecting method for instantaneous power failure of hard disk, and abnormality recovery method thereof
- Patent Title (中): 存储装置，图像形成装置，硬盘的瞬时停电异常检测方法及其异常恢复方法
-
Application No.: US14634778Application Date: 2015-02-28
-
Publication No.: US09196293B2Publication Date: 2015-11-24
- Inventor: Naruyuki Miyamoto
- Applicant: KYOCERA Document Solutions Inc.
- Applicant Address: JP Osaka
- Assignee: KYOCERA Document Solutions Inc.
- Current Assignee: KYOCERA Document Solutions Inc.
- Current Assignee Address: JP Osaka
- Agency: Hawaii Patent Services
- Agent Nathaniel K. Fedde; Kenton N. Fedde
- Priority: JP2014-038151 20140228
- Main IPC: G11B19/04
- IPC: G11B19/04 ; G11B27/36 ; G01R19/00 ; G01R31/40 ; G01R19/165 ; G06F1/30 ; H02H3/247 ; G11B19/20
Abstract:
Provided is a storage apparatus that detects abnormalities of a hard disk caused by the instantaneous power failure of a low voltage power supply. An effective value reduction detecting circuit transmits a detection signal, when the voltage of a low voltage power supply is lower than specific voltage. CPU memorizes time t1 to a flash memory. Also, CPU memorizes time t2, when recovering low voltage power supply 13 on proper voltage. Then, CPU computes period of time T, which is time between time t1 and t2. If the computed period of time T is within a range from first period of time T1 to the second period of time T2, CPU operates a voltage switch and re-supply the power supply to the hard disk. If not within the range, CPU does not re-supply power to the hard disk.
Public/Granted literature
Information query
IPC分类:
