DC backup power supply system and disk array using same

Error detection/correction and fault detection/recovery – Data processing system error or fault handling – Reliability and availability

Reexamination Certificate

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Details

C714S022000, C713S300000

Reexamination Certificate

active

07406623

ABSTRACT:
In the case where there coexist general loads requiring backup only for a short duration and a specific load requiring backup for a longer duration, uninterruptible power with higher reliability is supplied to the specific load with the adoption of a simple configuration. A DC backup power supply system comprises an AC/DC converter for normally supplying DC power to loads in while (the general loads and the specific load, included), and a control circuit for supplying DC output backing up the loads in whole for relatively short time only from a battery at the time of a power outage, while supplying DC output backing up the specific load, such as a cache memory and so forth, for relatively long time. Thus, it is possible to implement an uninterruptible power supply system small in size and low in cost, provided with a function for proper use depending on a prevailing situation.

REFERENCES:
patent: 5319571 (1994-06-01), Langer et al.
patent: 5381554 (1995-01-01), Langer et al.
patent: 5461263 (1995-10-01), Helfrich
patent: 5585677 (1996-12-01), Cheon et al.
patent: 5889933 (1999-03-01), Smith
patent: 2002/0186576 (2002-12-01), Kanouda et al.
patent: 2004/0073817 (2004-04-01), Liu et al.

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