Abstract: A hinge device of a portable terminal with a foldable structure according to the present invention includes: housing positioned between one end of a first body and one end of a second body; first hinge blade and second hinge blade fixed to the first body and the second body, respectively, and supported against the housing to rotate at a predetermined angle between an ‘unfolded position’ in which the first body and the second body are placed on the same horizontal line and a ‘folded position’ in which the first body and the second body face each other and thus come into contact with each other; and first interlocking gear and second interlocking gear for interlocking the first hinge blade and the second hinge blade with each other so that the first hinge blade and the second hinge blade move relative to each other, wherein the first interlocking gear and the second interlocking gear are mounted on the corresponding housing in such a way as to rotate relative to each other by a predetermined angle around gear s

Abstract: Provided is a holographic optical element printing method using a tunable focus lens and a rotating mirror. According to an embodiment, a holographic printer includes: a first optical engine and a second optical engine configured to adjust a phase of an incident collimated beam and emit the collimated beam; and a first reduction optical system and a second reduction optical system configured to reduce the beam emitted from the first optical engine and the second optical engine and to allow the beam to enter a holographic material, wherein each of the first optical engine and the second optical engine includes: a rotating mirror configured to reflect while adjusting the phase of the incident collimated beam through rotation; and a tunable focus lens configured to refract while adjusting the phase of the incident collimated beam reflected from the rotating mirror through focus tuning.

Abstract: Provided is a cognitive experiment method for change in periphery region image quality for parameter determination of a foveated hologram. According to an embodiment, a cognitive experiment method for determining foveated image parameters includes: generating a foveated image which includes a foveal region and a periphery region while reducing image quality regarding the periphery region; displaying the generated foveated image; receiving an input of a response to image quality of the periphery region from a subject; and collecting information regarding appropriate image quality of the periphery region, based on the response inputted by the subject. Accordingly, in applying a foveated hologram generation algorithm for real-time reproduction, various parameters such as a boundary between a foveal region image and a periphery region image in a foveated hologram, and a degree of quality degradation of the periphery region image may be appropriately determined through a cognitive experiment.

Abstract: Provided is a hologram image normalization method for a holographic printer. In a holographic printing method according to an embodiment, generating, encoding, and normalizing for the (n+1)-th hogel are performed in parallel with loading and recording of a normalized hologram for the n-th hogel, and moving and waiting for the (n+1)-th hogel. Accordingly, a global maximum value and a global minimum value for normalization may be calculated as approximate estimation values, and a hologram generation process and a printing process may be performed in parallel, so that a total printing time may be minimized and memory usage may be optimized when holographic printing is performed.

Abstract: The present invention relates to an image encoding and decoding technique, and more particularly, to an image encoder and decoder using unidirectional prediction. The image encoder includes a dividing unit to divide a macro block into a plurality of sub-blocks, a unidirectional application determining unit to determine whether an identical prediction mode is applied to each of the plurality of sub-blocks, and a prediction mode determining unit to determine a prediction mode with respect to each of the plurality of sub-blocks based on a determined result of the unidirectional application determining unit.

Abstract: According to an embodiment, a wick structure of a heat pipe that is capable of bending while increasing a heat transferring operation limit value is provided by improving the wick structure provided inside the heat pipe.

Abstract: The liquefied gas storage tank includes a primary barrier, a primary insulation wall, a secondary barrier, and a secondary insulation wall. In a state where unit elements are arranged adjacent to each other, each of the unit elements being formed by stacking the secondary insulation wall, the secondary barrier, and a fixed insulation wall which is a part of the primary insulation wall, the primary insulation wall may comprise: a connection insulation wall provided in the space between the adjacent fixed insulation walls; first slits formed between the fixed insulation walls and the connection insulation wall when the connection insulation wall is inserted and installed between the adjacent fixed insulation walls; a plurality of second slits formed in a lengthwise direction and a widthwise direction of the fixed insulation walls; and a first insulating filler material for filling the first slits.

Abstract: Disclosed are a system and method for reselling a reserved instance, which creates earnings by purchasing a reserved instance from a reserved instance providing system, such as a cloud service system, and reselling the reserved instance to a client, and a recording medium in which a program for executing the method is written. The system purchases a reserved instance from a reserved instance providing system and resells the reserved instance to a client, and includes an instance usage prediction unit for predicting instance usage of a client using a machine learning model pre-trained in relation to the instance usage, a reserved instance purchase quantity determination unit for determining a reserved instance purchase quantity based on the instance usage, a reserved instance purchase unit for purchasing the reserved instance based on the reserved instance purchase quantity, and an instance reselling unit for reselling the purchased reserved instance to the client.

Abstract: An electronic device and method are provided for registering a device in a server through an application installed in an external device different from the device. The method includes providing a first user interface for inputting a user ID; causing, through the application, the external device to connect to the server using the user ID; providing a second user interface for receiving a user input to select a function to identify the device; causing the external device to connect to the device, in response to a message received from the device; obtaining, from the device, identification information of the device; controlling to transmit a registration request message, to the server, for requesting registration of the device in the server, the registration request message including the identification information of the device; and in response to registration of the device in the server, providing a third user interface including a visual indication of the device being registered in the server.

Abstract: An electronic device and method are provided for registering a device in a server through an application installed in an external device different from the device. The method includes providing a first user interface for inputting a user ID; causing, through the application, the external device to connect to the server using the user ID; providing a second user interface for receiving a user input to select a function to identify the device; causing the external device to connect to the device, in response to a message received from the device; obtaining, from the device, identification information of the device; controlling to transmit a registration request message, to the server, for requesting registration of the device in the server, the registration request message including the identification information of the device; and in response to registration of the device in the server, providing a third user interface including a visual indication of the device being registered in the server.

Abstract: An electronic device and method are provided for registering a device in a server. The method includes establishing a connection between a first device and the server; searching for a second device disposed in a home network in which the first device is disposed; establishing a connection between the first device and the second device, in response to a message transmitted by the second device; receiving identification information of the second device from the second device; and requesting registration of the second device with the server by transmitting the identification information of the second device to the server.

Abstract: The present invention relates to a refill container using double injection, comprising: a refill container for containing a cosmetic material, wherein the refill container is formed of a synthetic resin or a metallic material and has an impregnation member in which the cosmetic material is impregnated; a refill container holder which is coupled to the top of the refill container; and a refill container cover which is opened and closed by being hinge-coupled to the refill container holder, wherein the refill container holder is formed by doubly injecting or insert-injecting a packing part of an elastic material therein, and the top of the refill container and the packing part are coupled when the refill container and the refill container holder are coupled.

Abstract: The present invention relates to a sensor pixel including: a first transistor for a light sensing; a second transistor including one terminal connected to one terminal of the first transistor and the other terminal to which a reset voltage is transmitted; a third transistor including a gate connected to one terminal of the first transistor and one terminal connected to the other terminal of the first transistor; and a fourth transistor connected between the other terminal of the third transistor and a data line.

Abstract: The present invention relates to a cosmetic container comprising a refill container having a sealing ring and, more specifically, to a cosmetic container comprising a refill container having a sealing ring, the cosmetic container having a refill container holder embedded in an outer case, and having the refill container, which contains cosmetics, used by being coupled to the refill container holder, and improving refill convenience since after the cosmetics are completely used, a user easily separates the refill container from the refill container holder by pressing the refill container on the top thereof, and then can couple a new refill container to the refill container holder from the bottom of the outer case, thereby easily replacing the refill container.

Abstract: Provided a DC-DC converter and a two-stage power converter including the same. The DC-DC converter includes a plurality of active switches. Some of the plurality of active switches operate with a variable duty ratio D, and the remaining active switches operate with a fixed duty ratio. An input-output voltage conversion ratio of the DC-DC converter is determined based on the variable duty ratio D and an output of the DC-DC converter is controlled by adjusting the variable duty ratio D.

Abstract: The present invention relates to a refill container using double injection, comprising: a refill container for containing a cosmetic material, wherein the refill container is formed of a synthetic resin or a metallic material and has an impregnation member in which the cosmetic material is impregnated; a refill container holder which is coupled to the top of the refill container; and a refill container cover which is opened and closed by being hinge-coupled to the refill container holder, wherein the refill container holder is formed by doubly injecting or insert-injecting a packing part of an elastic material therein, and the top of the refill container and the packing part are coupled when the refill container and the refill container holder are coupled.

Abstract: An electronic device and method are provided for registering a device in a server. The method includes establishing a connection between a first device and the server; searching for a second device disposed in a home network in which the first device is disposed; establishing a connection between the first device and the second device, in response to a message transmitted by the second device; receiving identification information of the second device from the second device; and requesting registration of the second device with the server by transmitting the identification information of the second device to the server.

Abstract: Provided is a method for a user terminal to visualize information for making a decision in a user group. The method includes inputting a selection range of a first user of the user terminal over at least one criterion related to the decision-making, receiving information about selection ranges over at least one criterion related to the decision-making of other group members in the user group, extracting a filtered selection range by performing filtering based on at least one of the first user's selection range and the information about other group members' selection ranges; extracting candidates for decision-making that match the filtered selection range, and visually presenting the extracted candidates for decision-making. And at least one of the preferences for the visually presented candidates and the selection ranges over at least one criterion may be visually presented by matching with each group member.

Abstract: The present invention relates to a cosmetic container comprising a refill container having a sealing ring and, more specifically, to a cosmetic container comprising a refill container having a sealing ring, the cosmetic container having a refill container holder embedded in an outer case, and having the refill container, which contains cosmetics, used by being coupled to the refill container holder, and improving refill convenience since after the cosmetics are completely used, a user easily separates the refill container from the refill container holder by pressing the refill container on the top thereof, and then can couple a new refill container to the refill container holder from the bottom of the outer case, thereby easily replacing the refill container.

Abstract: A remote controller and a remote control method thereof are provided. The remote controller includes a communication module which communicates with a plurality of devices; an input unit through which a user command is input; and a controlling unit which determines a pointed device, among the plurality of devices, that the remote controller is pointing towards, and controls the communication module to transmit the user command to the pointed device to control the pointed device.