Samsung Electronics Co., Ltd.

Jang Hwan Kim

Da Woon Jung

Bo Hyung Kim

Moon Wook Oh

Jung Ik Ha

Jeong Hyoun Sung

Ho Sun Yoo

Young Doo Yoon

Hyung Sun You

Jong Ho Kim

A host device, a storage device, and a method employ a vendor unique command (VUC) authentication system. The storage device includes a memory and a memory controller which includes a VUC authentication module and controls the memory. The VUC authentication module transmits first memory information about the memory to the host device, receives from the host device a one-time password generated by the first memory information, verifies the one-time password, and receives a vendor unique command from the host device when the one-time password is correct.

Vendor unique command authentication system, and a host device, storage device, and method employing the same

A sensorless control apparatus of a motor may include: a position estimator configured to compensate for a resistance and a magnetic flux of a permanent magnet of the motor according to a temperature of the motor, and/or configured to generate an estimated speed of a rotor of the motor based on the compensated resistance and the compensated magnetic flux of the permanent magnet; and/or a speed controller configured to generate a command current based on a command speed of the rotor and the estimated speed of the rotor.

Sensorless control apparatuses of motors and control methods thereof

A phase current prediction method is disclosed. The phase current prediction method predicts current representative of a PWM period using a motor model which receives current measured through a single current sensor as an input, instead of the measured current, and determines the predicted current to be phase current.

Method to predict phase current

Growing community of inventors

Suwon-si, South Korea

Jang Hwan Kim