MEMORY CONTROLLER, NON-VOLATILE STORAGE DEVICE, NON-VOLATILE STORAGE SYSTEM, AND MEMORY CONTROL METHOD

MEMORY CONTROLLER, NON-VOLATILE STORAGE DEVICE, NON-VOLATILE STORAGE SYSTEM, AND MEMORY CONTROL METHOD

A memory controller includes a data discard controller, calculates a physical address of discard object data designated by a logical address by a host device, and registers the calculated physical address as discard object data information. With respect to a predetermined command from the host devic...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SUTO, Masato, SOU, Hirokazu, KOGITA, Shigekazu, HONDA, Toshiyuki
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRIC DIGITAL DATA PROCESSING
ELECTRICITY
PHYSICS
PICTORIAL COMMUNICATION, e.g. TELEVISION
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Beschreibung
Zusammenfassung:A memory controller includes a data discard controller, calculates a physical address of discard object data designated by a logical address by a host device, and registers the calculated physical address as discard object data information. With respect to a predetermined command from the host device, the data discard controller outputs current discard object data information to the host device. When no command is received from the host device, the data discard controller physically erases the discard object data on the basis of the discard object data information.