Abstract: Disclosed herein are a ceramic plate to which an industrial fiber is attached to one surface thereof in order to reinforce the strength of a material and a refrigerator including the same. In accordance with one aspect of the present disclosure, a ceramic plate includes a porous ceramic substrate, an adhesive layer bonded to one surface of the porous ceramic substrate, and a reinforcement material layer bonded on the adhesive layer and formed of a fabric woven from at least one industrial fiber selected from the group consisting of an aramid fiber and a carbon fiber.

Abstract: Embodiments of the present disclosure relate to an inner cabinet for a refrigerator formed of a ceramic material and a refrigerator including the same. One aspect of an inner cabinet for a refrigerator, the inner cabinet includes a ceramic material comprising at least one of silicon oxide and aluminum oxide as a main component, wherein the ceramic material has a ratio of an area occupied by pores per unit surface area in the range of 0.1 to 10%.

Abstract: Disclosed herein are a ceramic plate to which an industrial fiber is attached to one surface thereof in order to reinforce the strength of a material and a refrigerator including the same. In accordance with one aspect of the present disclosure, a ceramic plate includes a porous ceramic substrate, an adhesive layer bonded to one surface of the porous ceramic substrate, and a reinforcement material layer bonded on the adhesive layer and formed of a fabric woven from at least one industrial fiber selected from the group consisting of an aramid fiber and a carbon fiber.

Abstract: Embodiments of the present disclosure relate to an inner cabinet for a refrigerator formed of a ceramic material and a refrigerator including the same. One aspect of an inner cabinet for a refrigerator, the inner cabinet includes a ceramic material comprising at least one of silicon oxide and aluminum oxide as a main component, wherein the ceramic material has a ratio of an area occupied by pores per unit surface area in the range of 0.1 to 10%.

Abstract: A gap servo control method and apparatus for increasing a disturbance cancellation capability and decreasing the occurrence of an overshoot in a near-field optical disc drive include: generating an actuator driving signal of a transient response process by using a signal obtained by removing a disturbance contained in the gap error signal using a first band when a level of a gap error signal reaches a first level; and generating the actuator driving signal of the transient response process by using a signal obtained by removing the disturbance contained in the gap error signal using a second band when the level of the gap error signal reaches a second level.

Abstract: An optical disc apparatus, and a method of driving the same, includes a light focusing element disposed to focus light emitted from a light source onto a disc; an actuator to move the light focusing element toward or away from the disc according to a voltage applied to the actuator; a light intensity detection unit to detect the intensity of light reflected from the disc; a servo unit to generate a gap error signal and a third voltage, the third voltage being the sum of a first voltage and a second voltage, and to apply the generated third voltage to the actuator; and a control unit to control the servo unit to perform a gap pull-in operation when the light focusing element is moved toward the disc according to the gap error signal and the third voltage.

Abstract: A gap servo control method and apparatus for increasing a disturbance cancellation capability and decreasing the occurrence of an overshoot in a near-field optical disc drive include: generating an actuator driving signal of a transient response process by using a signal obtained by removing a disturbance contained in the gap error signal using a first band when a level of a gap error signal reaches a first level; and generating the actuator driving signal of the transient response process by using a signal obtained by removing the disturbance contained in the gap error signal using a second band when the level of the gap error signal reaches a second level.

Abstract: An optical disc apparatus, and a method of driving the same, includes a light focusing element disposed to focus light emitted from a light source onto a disc; an actuator to move the light focusing element toward or away from the disc according to a voltage applied to the actuator; a light intensity detection unit to detect the intensity of light reflected from the disc ; a servo unit to generate a gap error signal and a third voltage, the third voltage being the sum of a first voltage and a second voltage, and to apply the generated third voltage to the actuator; and a control unit to control the servo unit to perform a gap pull-in operation when the light focusing element is moved toward the disc according to the gap error signal and the third voltage.