Static information storage and retrieval – Magnetic bubbles – Guide structure
Patent
1992-09-14
1994-02-01
Gossage, Glenn
Static information storage and retrieval
Magnetic bubbles
Guide structure
365222, 365 52, 365 45, 36518907, 395400, 364DIG1, 36424691, 3649649, G06F 1206, G11C 11406
Patent
active
052838854
ABSTRACT:
A storage module which can be inserted into a data processing apparatus, such as a dictating apparatus, includes an at least partly random accessible storage device (5) for the storage of digital data signals and an access device for serially accessing storage locations in the storage device. The storage device requires refreshing and cooperates with a refresh device (6) for refreshing data signals stored in the storage device (5). The refresh device (6) includes additional storage devices (11) which store, upon writing in the storage locations of the storage device (5), start addresses and stop addresses from the access device (9), under the control of a control circuit (12). Only storage locations which are situated between a pair of start and stop addresses are timely refreshed via a refresh control device (20). Such a storage module is preferably used in conjunction with the dictating apparatus for the storage of speech signals.
REFERENCES:
patent: 4368466 (1983-01-01), Dwire
patent: 4701843 (1987-10-01), Cohen
patent: 4802118 (1989-01-01), Honda et al.
patent: 4823302 (1989-04-01), Christopher
patent: 5021951 (1991-06-01), Baba
Biren Steven R.
Gossage Glenn
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