Abstract: Disclosed herein is an apparatus and method for synchronizing a block in a blockchain network. The apparatus synchronizes node information of existing participating nodes connected to a blockchain network by joining the blockchain network, determines synchronization target blocks by calculating the current section of a blockchain using an agreed-upon block received from the existing participating nodes, receives a block header of each section and the segment hash table of a snapshot that are verification data for verifying synchronization target data for the synchronization target blocks from participating nodes that are not connected as peers, among the existing participating nodes, generates a snapshot by receiving snapshot segments and the blocks of the current section, which are the synchronization target data, from participating nodes connected as peers, among the existing participating nodes, verifies the snapshot generated from the snapshot segments, and synchronizes the verified snapshot.

Abstract: Disclosed are an apparatus and method for electing a committee node in a blockchain. The apparatus for electing a committee node in a blockchain is configured to transmit a staking transaction including validator information to a blockchain system to register a validator node, generate a draw pool for electing a committee node based on the validator information, change entries of the draw pool using a predefined shuffling algorithm, select a preset number of top entries as votes of a committee member from among the entries of the shuffled draw pool, and elect, as the committee node, the validator node that has acquired votes of a committee.

Abstract: Disclosed herein is a method for adding an additional chain to a blockchain. The method includes depositing, by a node of the blockchain, an asset corresponding to the additional chain; selecting the node as one of consensus nodes for connecting an additional block to the additional chain based on a share value corresponding to the asset; and performing, by the node, distributed consensus for connecting the additional block. Here, nodes constituting the blockchain include major shareholder nodes for processing transactions.

Abstract: A head-mounted display (HMD) apparatus includes a main body having a first surface facing a user's facial side, at least one connecting part connected to at least one surface of the main body, and a wearing part having a strap form, the wearing part being connected to the at least one connecting part and surrounding a portion of a head of the user such that the main body is held on the user's facial side. The main body includes a first support part extending from a portion of the first surface. The wearing part includes a second support part formed on an inner circumferential surface of a front portion of the wearing part facing a forehead of the user. The first support part and the second support part are supported on the user's forehead, thereby minimizing pressure exerted on zygomatic regions and relieving pressure and weight felt by the user.

Abstract: According to the present invention, content generated from a mobile terminal, a camera, or the like is stored automatically in a home gateway in a home network system. If synchronization is set between the home gateway and a home device, the home gateway may transmit backup content to the synchronized home device. Content may be selectively stored and classified based on a specific location, memo, voice, and the like set by a user for privacy protection.

Abstract: A method of connecting an Access Point (AP) is disclosed. The method includes, if a device having a nearfield wireless communication tag is tagged with a mobile terminal apparatus having a nearfield wireless communication reader, providing connecting information stored on the device to the mobile terminal apparatus, connecting the mobile terminal apparatus, receiving AP information from the connected mobile terminal apparatus, and connecting to an AP using the received AP information. As a result, connecting to the AP can be implemented more conveniently.

Abstract: A head-mounted display (HMD) apparatus includes a main body having a first surface facing a user's facial side, at least one connecting part connected to at least one surface of the main body, and a wearing part having a strap form, the wearing part being connected to the at least one connecting part and surrounding a portion of a head of the user such that the main body is held on the user's facial side. The main body includes a first support part extending from a portion of the first surface. The wearing part includes a second support part formed on an inner circumferential surface of a front portion of the wearing part facing a forehead of the user. The first support part and the second support part are supported on the user's forehead, thereby minimizing pressure exerted on zygomatic regions and relieving pressure and weight felt by the user.

Abstract: A method of connecting an Access Point (AP) is disclosed. The method includes, if a device having a nearfield wireless communication tag is tagged with a mobile terminal apparatus having a nearfield wireless communication reader, providing connecting information stored on the device to the mobile terminal apparatus, connecting the mobile terminal apparatus, receiving AP information from the connected mobile terminal apparatus, and connecting to an AP using the received AP information. As a result, connecting to the AP can be implemented more conveniently.

Abstract: A method of connecting an Access Point (AP) is disclosed. The method includes, if a device having a nearfield wireless communication tag is tagged with a mobile terminal apparatus having a nearfield wireless communication reader, providing connecting information stored on the device to the mobile terminal apparatus, connecting the mobile terminal apparatus, receiving AP information from the connected mobile terminal apparatus, and connecting to an AP using the received AP information. As a result, connecting to the AP can be implemented more conveniently.

Abstract: According to the present invention, content generated from a mobile terminal, a camera, or the like is stored automatically in a home gateway in a home network system. If synchronization is set between the home gateway and a home device, the home gateway may transmit backup content to the synchronized home device. Content may be selectively stored and classified based on a specific location, memo, voice, and the like set by a user for privacy protection.

Abstract: A method of connecting an Access Point (AP) is disclosed. The method includes, if a device having a nearfield wireless communication tag is tagged with a mobile terminal apparatus having a nearfield wireless communication reader, providing connecting information stored on the device to the mobile terminal apparatus, connecting the mobile terminal apparatus, receiving AP information from the connected mobile terminal apparatus, and connecting to an AP using the received AP information. As a result, connecting to the AP can be implemented more conveniently.

Abstract: Disclosed are a user input device and a method for rapidly selecting an operation mode in a mobile terminal having a touch screen input panel and a fingerprint recognition sensor. The user input method includes setting operation modes for at least one fingerprint data and input pattern, each comprised of keys necessary to implement a corresponding operation mode; detecting fingerprint data inputted from the fingerprint recognition sensor, and confirming an operation mode set for the inputted fingerprint data; and displaying an input pattern corresponding to the confirmed operation mode on the touch screen input panel.

Abstract: Disclosed is an audio/video data synchronization apparatus for directly transmitting decoded audio/video data to an external device, without compressing the data, using UWB communication. The apparatus synchronizes video and audio data stored in a terminal without compressing the data and simultaneously transmits the data to an external device using UWB communication, so that users can enjoy high-quality images and sounds. In addition, the receiving end does not necessarily incorporate a separate function for decoding moving images, because it receives uncompressed video/audio data. This makes the apparatus simple and convenient.

Abstract: An apparatus includes an interactive user interface that varies according to strength of blowing. A sensor detects blowing from a user and outputs a strength value of the detected blowing. A memory stores interactive image data capable of giving an effect of responding to user's blowing strength in real time. A controller loads interactive image data corresponding to the strength value of the blowing from the memory, and configures an interactive image that varies according to the strength value of the blowing, using the loaded interactive image data. A display displays the configured interactive image under control of the controller.

Abstract: Disclosed is a wristwatch-type mobile terminal and method for receiving user inputs therein, which can efficiently receive user inputs through a pressure sensor. The method for receiving user inputs in a wristwatch-type mobile terminal includes providing a sensor unit to the wristwatch-type mobile terminal and detecting a user input through the sensor unit, deciding an operation corresponding to a corresponding location of the sensor unit depending on the user input, determining whether the decided operation relates to movement of a pointer movable on a display screen, determining whether pressure of the user input is more than a preset value when the decided operation relates to the movement of the pointer, and moving the pointer a first distance and displaying the pointer when the pressure of the user input is not more than the preset value, or moving the pointer a second distance and displaying the pointer when the pressure of the user input is more than the preset value.

Abstract: Disclosed is an audio/video data synchronization apparatus for directly transmitting decoded audio/video data to an external device, without compressing the data, using UWB communication. The apparatus synchronizes video and audio data stored in a terminal without compressing the data and simultaneously transmits the data to an external device using UWB communication, so that users can enjoy high-quality images and sounds. In addition, the receiving end does not necessarily incorporate a separate function for decoding moving images, because it receives uncompressed video/audio data. This makes the apparatus simple and convenient.

Abstract: Disclosed are a user input device and a method for rapidly selecting an operation mode in a mobile terminal having a touch screen input panel and a fingerprint recognition sensor. The user input method includes setting operation modes for at least one fingerprint data and input pattern, each comprised of keys necessary to implement a corresponding operation mode; detecting fingerprint data inputted from the fingerprint recognition sensor, and confirming an operation mode set for the inputted fingerprint data; and displaying an input pattern corresponding to the confirmed operation mode on the touch screen input panel.