Static information storage and retrieval – Powering – Data preservation
Patent
1980-03-28
1982-04-06
Fears, Terrell W.
Static information storage and retrieval
Powering
Data preservation
365227, 371 10, G11C 1140
Patent
active
043239870
ABSTRACT:
Apparatus for retrieving data from a volatile memory in a data processing system in the event of a power supply failure. Means are provided for transferring the data to an external device. Power sensing means detects a power failure; an independent power supply is provided for maintaining the data in the memory when the power sensing means detects a power failure; timing means detects a lapse of time from the power failure; and output means transfers the data from the volatile memory to the external device when the timing means indicates that a predetermined time interval has lapsed.
REFERENCES:
patent: 3810116 (1974-05-01), Prohofsky
patent: 3859638 (1975-01-01), Hume
IBM Tech. Dis. Bul., vol. 18, No. 12, May 1976, "Power Out Warning Interrupt Circuit", by R. D. DeMong, pp. 4147-4149.
Holtz Earl B.
Lay Roger F.
Manduley Flavio M.
Moody Howard J.
Fears Terrell W.
Levy Mark
Pitney Bowes Inc.
Scribner Albert W.
Soltow, Jr. William D.
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