Samsung Electro-mechanics Co., Ltd.

Korea Electronics Technology Institute

Won Ki Park

Dae Sung Lee

Jong Woo Kim

Dae Hyun Jeong

Dong Sun Kim

Byung Gi An

Ick Chan Shim

Satoru Sodeoka

Sung Chul Lee

Kyung Hoon Choi

Jong Yong Park

Dae Wook Kim

Seok Jo Hwang

Myeung Hwa Heo

Cheol Koo Hahn

This application relates to a self-reference point setting type blood component measuring method and apparatus using light. In one aspect, the method includes applying light to a skin of a subject to be measured and setting a reference point on a surface of the skin adjacent to a point at which the light is applied. The method further includes calculating a concentration of a blood component from a light intensity measured at the reference point and a light intensity measured at another point. According to some embodiments, the accuracy and precision of measurement are increased in measuring blood in a non-invasive manner.

Self-reference point setting type blood component measuring method and apparatus

A dual camera module includes a single housing accommodating a plurality of lens modules, a first actuator configured to move one of the plurality of lens modules in an optical axis direction, and a plurality of printed circuit boards attached to a lower portion of the single housing. One printed circuit board corresponding to a lens module moved by the first actuator, among the plurality of printed circuit boards, is disposed to be lower than the other printed circuit boards in the optical axis direction.

Dual camera module and portable electronic device

A measurement method and apparatus for correcting a disturbance and an offset of a sensor simultaneously are described. The method includes applying a bias current to first and second sensors of a Wheatstone bridge type connected with each other as a differential structure, and measuring a voltage of the first sensor and a voltage of the second sensor. The method also includes applying a bias current to the first and second sensors in a direction opposite to the direction in the first applying, and measuring a voltage of the first sensor and a voltage of the second sensor. The method further includes calculating a final measurement value based on the measured voltages. Accordingly, the offset and the influence of the disturbance of the sensor can be simultaneously removed through one circuit, such that advantageous effects such as reduced complexity, reduced area/volume, and shortened correction time can be achieved.

Measurement method and apparatus for simultaneous correction of disturbance and offset of sensor

A method and an apparatus for calculating an offset of a Wheatstone bridge type sensor are described. The offset calculation method includes measuring resistances between nodes of a Wheatstone bridge type sensor, calculating an offset of the sensor using the measured resistances and providing information on the calculated offset. Accordingly, the offset of the Wheatstone bridge type sensor can be rapidly and easily calculated independently from the size of a bias current, and ultimately. Furthermore, time required to measure can be reduced and thus a sensor fabrication cost can be reduced, and also, mass production can be enhanced.

Method and apparatus for calculating offset of wheatstone bridge type sensor

There are provided a hydrodynamic bearing assembly and a motor including the same. The hydrodynamic bearing assembly includes a sleeve rotatably supporting a shaft and including a first circulation hole formed therein, the first circulation hole penetrating between an inner peripheral surface thereof and an outer peripheral surface thereof; a sleeve housing into which the sleeve is inserted; and a second circulation hole formed between the outer peripheral surface of the sleeve and an inner peripheral surface of the sleeve housing to be in communication with the first circulation hole, wherein an upper portion of the second circulation hole has a larger diameter than a lower portion thereof in an axial direction.

Hydrodynamic bearing assembly and motor including the same

There is provided a spindle motor including a base member including an installation part having a stator core installed on an outer peripheral surface thereof, a lower thrust member insertedly installed in the installation part, a shaft having a lower end portion fixed to the lower thrust member and an upper end portion having a flange part formed thereon, a rotating member including a sleeve forming a bearing clearance with the shaft and the lower thrust member, and a rotor hub extended from the sleeve, and a magnet installation guiding member installed on an inner surface of the rotor hub and guiding an installation position of a driving magnet such that centers of the stator core and the driving magnet coincide with each other in an axial direction, wherein the magnet installation guiding member seals one side of a clamping hole formed in the rotor hub.

Growing community of inventors

Suwon-si, South Korea

Won Ki Park