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US 8,554,982 B2Granted
Storage device and information processing system
AssigneeSony Corporation
InventorsToshiyuki Nishihara, Yoshio Sakai
Life of this patent
Estimating the term…
Abstract
A storage device able to make a redundant write operation of unselected data unnecessary and able to optimize an arrangement of pages to a state having a high efficiency for rewriting, wherein the storage device has a first memory unit, a second memory unit having a different access speed from the first memory, and a control circuit, wherein the control circuit has a function of timely moving the stored data in two ways between the first memory unit and the second memory unit having different access speeds in reading or rewriting.
Claims23
A storage device comprising:
- an address conversion table configured to store physical addresses of data;
- a location in main memory configured to store said data, said location in the main memory being identifiable by one of the physical addresses;
- a location in auxiliary memory configured to store said data, said location in the auxiliary memory being identifiable by another of the physical addresses, wherein said auxiliary memory has an access speed higher than said main memory.
Dependencies are inferred from the claim text.