Samsung Electronics Co., Ltd.

Lg Electronics Inc.

Byung-Youn Song

Jung-Hoon Lee

Hyung-Joo Kang

Kyung-sik Shin

Do-sun Nam

Won-Ik Cho

Dae-Jong Jang

Byung-Ryul Ryoo

Kyung-Sik 105-401 Suji-Jukjeon Dongbu Apt Shin

Do-Sun Nam

Provided are a photonic memory device, a method of storing data using the photonic memory device, and a photonic sensor device. The photonic memory device comprises a signal line through which a photon is input; a ring resonator receiving a photon through an input gap that is adjacent to the signal line and storing the photon; and a detect line outputting the photon stored in the ring resonator through an output gap that is adjacent to the ring resonator, wherein data is read/written and stored/deleted by the input/output of the photon.

Photonic memory device, data storing method using the photonic memory device and photonic sensor device

An optical pickup actuator includes focus coils, track coils, and tilt coils disposed on opposite sides of a bobbin to drive the bobbin in a focus direction, a track direction, and a tilt direction and leaves the other opposite sides of the bobbin as empty sides on which the focus, track, and tilt coils are not disposed. The optical pickup actuator includes a base, a bobbin, a holder, and a magnetic driver. The bobbin is movably disposed on the base since supporting units support the bobbin above the base. The holder is disposed on one side of the base and connected to one ends of the supporting units. The magnetic driver has the focus coils driving the bobbin in the focus direction, the track coils driving the bobbin in the track direction, the tilt coils driving the bobbin in a tilt direction, and magnets installed to face the focus coils, the track coils, and the tilt coils. Since the other opposite sides are not mounted with the focus, track, and tilt coils, wires of the support units can easily be installed on the other opposite sides of the bobbin.

Optical pickup actuator with a magnetic driver having focus, track and tilt coils

An optical pickup actuator includes a bobbin. At least one focus coil and at least one track coil are arranged at both sides of the bobbin to secure the remaining sides of the bobbin. The optical pickup actuator can drive an optical pickup in a focus direction, a track direction, and a tilt direction. The focus coil is also used as the tilt coil. An optical pickup actuator is driven by arranging a bobbin on a base of the optical pickup actuator so as to be moved by support members, installing at least one focus and tilt coil to drive the bobbin in focus and tilt directions and at least one track coil to drive the bobbin in a track direction at opposite side surfaces of the bobbin, arranging magnets to face corresponding sides of the opposite side surfaces of the bobbin, and dividing the focus and tilt coils into at least two sets of coils and applying an input signal to each of the sets. Since driving in the focus direction and the tilt direction can be controlled together by a single coil, the number of the support members can be reduced and the defective ratio can be lowered. Accordingly, the three axes driving and the four axes driving can be stably implemented.

Optical pickup actuator driving method and apparatus therefor

Growing community of inventors

Gyeonggi-do, South Korea

Byung-Youn Song