Sony Corporation

Sony Group Corporation

Hiroaki Yamazoe

Toshifumi Nishiura

Daisuke Nakajima

Kan Nagashima

Hideaki Okubo

Kai Suzuki

Keita Kawamura

A non-volatile memory device includes a non-volatile memory unit, a control unit, and an interface. The control unit receives a write request, determines whether data is an object of a write of sequential management when a write size of the received data is smaller than a management unit of erasure, performs first write processing in which the received data smaller than the management unit of the erasure is sequentially written when the data is the object of the write of the sequential management, and performs second write processing in which the received data smaller than the management unit of the erasure is written by the management unit of the write when the data is not the object of the write of the sequential management.

Non-volatile memory device, non-volatile memory control device, and non-volatile memory control method

High-speed data transfer is performed in a storage device having a plurality of semiconductor memories while an increase in power consumption is prevented. In a memory controller, a request transfer unit transfers a request for demanding transfer of data and data based on the request to each of a plurality of memories in synchronization with a clock signal. A busy time measurement unit measures a busy time which is a time required for access based on the request, for a selected memory which is one memory out of the plurality of memories. A clock signal adjustment unit substantially equalizes the measured busy time of the selected memory and a total time required for transferring the requests and the data for the plurality of memories except the selected memory by adjusting a frequency of the clock signal.

Memory controller, storage device, information processing system, and memory control method

A flash memory device includes a flash memory unit; and a control unit configured to perform control so that data having a size smaller than a block size of the flash memory unit is sequentially written to the flash memory unit.

Flash memory device, memory control device, memory control method, and storage system

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Tokyo, Japan

Hiroaki Yamazoe