Sony Corporation

Kouya Koba

Kai Suzuki

Tamaki Konno

Seiryu Takayama

Takahiro Fukushige

Disclosed herein is a storage device including: a communication execution unit configured to be capable of controlling an operation state between a communication-enabled state in which data communication is possible and a pause state in which data communication is impossible; a buffer configured to store data transmitted and received by the communication execution unit; a memory configured to be capable of storing data; a memory controller configured to carry out data input and output between the memory and the buffer; and a communication controller configured to make the communication execution unit operate if data communication is carried out, and make the communication execution unit take a pause if data communication is not carried out. The communication controller switches the operation state of the communication execution unit between the communication-enabled state and the pause state in data communication depending on a data processing state of the buffer.

Storage device and storage system

A motor driver circuit according to the present invention comprises an edge signal generation means for generating an edge signal indicating the timing of phase-switching according to the values of a plurality voltages induced when driving the motor and a drive voltage control means for controlling the highest value of the drive voltage for driving the motor according to the edge signal. The drive voltage control means includes a first drive voltage control means for controlling the highest value of the drive voltage before the timing of phase-switching and a second drive voltage control means for controlling the highest value of the drive voltage after the timing of phase-switching. With this arrangement, it is possible to realize soft switching control while the motor is driven to rotate at high speed and reduce the noise due to the motor being driven to rotate.

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Kanagawa, Japan

Kouya Koba