Abstract: The austenitic stainless steel that does not cause defects such as aging crack or delayed fracture even after the expansion and curling process of 5 steps or more is disclosed. In accordance with an aspect of the present disclosure, an austenitic stainless steel with excellent pipe expanding workability and aging crack resistance includes, in percent (%) by weight of the entire composition, C: 0.01 to 0.04%, Si: 0.1 to 1.0%, Mn: 0.1 to 2.0%, Cr: 16 to 20%, Ni: 6 to 10%, Cu: 0.1 to 2.0%, Mo: 0.2% or less, N: 0.035 to 0.07%, the remainder of iron (Fe) and other inevitable impurities, and the C+N satisfies 0.1% or less, the product of the Md30 (° C.) value and average grain size (?m) satisfies less than ?500.

Abstract: Designating a peer-to-peer (P2P) operating channel between a display apparatus and a portable apparatus connected in a wireless fidelity (Wi-Fi) direct scheme according to whether the display apparatus and an access point (AP) are connected and whether the portable apparatus and the AP are connected.

Abstract: A display apparatus includes a processor configured to receive device information of a portable device, which includes first information about a wireless connection between the portable device and an access point and second information about whether the portable device supports a real simultaneous dual band (RSDB), acquire device information of the display apparatus, which includes third information about a wireless connection between the display apparatus and the access point and fourth information about whether the display apparatus supports the RSDB, determine a peer-to-peer (P2P) operating channel between the display apparatus and the portable device based on the device information of the display apparatus and the device information of the portable device, and control the display apparatus to connect the display apparatus to the portable device through the determined P2P operating channel.

Abstract: Designating a peer-to-peer (P2P) operating channel between a display apparatus and a portable apparatus connected in a wireless fidelity (Wi-Fi) direct scheme according to whether the display apparatus and an access point (AP) are connected and whether the portable apparatus and the AP are connected.

Abstract: Designating a peer-to-peer (P2P) operating channel between a display apparatus and a portable apparatus connected in a wireless fidelity (Wi-Fi) direct scheme according to whether the display apparatus and an access point (AP) are connected and whether the portable apparatus and the AP are connected.

Abstract: Designating a peer-to-peer (P2P) operating channel between a display apparatus and a portable apparatus connected in a wireless fidelity (Wi-Fi) direct scheme according to whether the display apparatus and an access point (AP) are connected and whether the portable apparatus and the AP are connected.

Abstract: Designating a peer-to-peer (P2P) operating channel between a display apparatus and a portable apparatus connected in a wireless fidelity (Wi-Fi) direct scheme according to whether the display apparatus and an access point (AP) are connected and whether the portable apparatus and the AP are connected.

Abstract: A display apparatus includes a processor configured to receive device information of a portable device, which includes first information about a wireless connection between the portable device and an access point and second information about whether the portable device supports a real simultaneous dual band (RSDB), acquire device information of the display apparatus, which includes third information about a wireless connection between the display apparatus and the access point and fourth information about whether the display apparatus supports the RSDB, determine a peer-to-peer (P2P) operating channel between the display apparatus and the portable device based on the device information of the display apparatus and the device information of the portable device, and control the display apparatus to connect the display apparatus to the portable device through the determined P2P operating channel.

Abstract: A display apparatus includes a processor configured to receive device information of a portable device, which includes first information about a wireless connection between the portable device and an access point and second information about whether the portable device supports a real simultaneous dual band (RSDB), acquire device information of the display apparatus, which includes third information about a wireless connection between the display apparatus and the access point and fourth information about whether the display apparatus supports the RSDB, determine a peer-to-peer (P2P) operating channel between the display apparatus and the portable device based on the device information of the display apparatus and the device information of the portable device, and control the display apparatus to connect the display apparatus to the portable device through the determined P2P operating channel.

Abstract: A method for setting a communication channel of a first device is provided. The method for setting the communication channel of the first device includes: communicating with an Access Point (AP) via a predetermined channel; and in response to a problem arising in communicating with the AP, alternating between an AP search mode to discover the AP and a standby mode to set the communication channel for communicating with a second device among a plurality of channels.

Abstract: A display apparatus includes a processor configured to receive device information of a portable device, which includes first information about a wireless connection between the portable device and an access point and second information about whether the portable device supports a real simultaneous dual band (RSDB), acquire device information of the display apparatus, which includes third information about a wireless connection between the display apparatus and the access point and fourth information about whether the display apparatus supports the RSDB, determine a peer-to-peer (P2P) operating channel between the display apparatus and the portable device based on the device information of the display apparatus and the device information of the portable device, and control the display apparatus to connect the display apparatus to the portable device through the determined P2P operating channel.

Abstract: Designating a peer-to-peer (P2P) operating channel between a display apparatus and a portable apparatus connected in a wireless fidelity (Wi-Fi) direct scheme according to whether the display apparatus and an access point (AP) are connected and whether the portable apparatus and the AP are connected.

Abstract: A Wi-Fi Direct connection method for a plurality of devices and a device having a Wi-Fi Direct connection function are disclosed. The Wi-Fi Direct connection method including connecting the plurality of devices through an access point (AP) for communication, making a request through a first device to a second device from among the plurality of devices through the AP to perform a Wi-Fi Direct connection, changing the state of the second device into a standby mode for the Wi-Fi Direct connection in a response to the request for the Wi-Fi Direct connection, performing provisioning discovery by the first device after making the request for the Wi-Fi Direct connection and exchanging a provisioning method with the second device; and accepting the Wi-Fi Direct connection in response to the second device receiving the provisioning discovery request from the first device which has requested the Wi-Fi Direct connection.

Abstract: A method for setting a communication channel of a first device is provided. The method for setting the communication channel of the first device includes: communicating with an Access Point (AP) via a predetermined channel; and in response to a problem arising in communicating with the AP, alternating between an AP search mode to discover the AP and a standby mode to set the communication channel for communicating with a second device among a plurality of channels.

Abstract: A wireless communication apparatus and a control method thereof are provided. The wireless communication apparatus includes: a first communication unit which receives a video signal from an image device; a video processor which processes the video signal; a second communication unit establishes a wireless connection with another device; and a controller receives wireless connection information from the image device through the first communication unit, and controls the second communication unit to establish the wireless connection with the other device based on the received wireless connection information.

Abstract: A Wi-Fi Direct connection method for a plurality of devices and a device having a Wi-Fi Direct connection function are disclosed. The Wi-Fi Direct connection method including connecting the plurality of devices through an access point (AP) for communication, making a request through a first device to a second device from among the plurality of devices through the AP to perform a Wi-Fi Direct connection, changing the state of the second device into a standby mode for the Wi-Fi Direct connection in a response to the request for the Wi-Fi Direct connection, performing provisioning discovery by the first device after making the request for the Wi-Fi Direct connection and exchanging a provisioning method with the second device; and accepting the Wi-Fi Direct connection in response to the second device receiving the provisioning discovery request from the first device which has requested the Wi-Fi Direct connection.

Abstract: A station device includes an output unit that outputs a massage, a communication unit that communicates with a wireless access point which is movable from one place to another place, a determination unit that determines current communication performance with the wireless access point, a storage unit that stores the determined current communication performance, and a controller that compares the current communication performance with pre-stored previous communication performance and controls the output unit to output a message according to a result of the comparison.

Abstract: A wireless communication apparatus and a control method thereof are provided. The wireless communication apparatus includes: a first communication unit which receives a video signal from an image device; a video processor which processes the video signal; a second communication unit establishes a wireless connection with another device; and a controller receives wireless connection information from the image device through the first communication unit, and controls the second communication unit to establish the wireless connection with the other device based on the received wireless connection information.

Abstract: A wireless communication apparatus and a control method thereof are provided. The wireless communication apparatus includes: a first communication unit which receives a video signal from an image device; a video processor which processes the video signal; a second communication unit establishes a wireless connection with another device; and a controller receives wireless connection information from the image device through the first communication unit, and controls the second communication unit to establish the wireless connection with the other device based on the received wireless connection information.

Abstract: A wireless communication apparatus and a control method thereof are provided. The wireless communication apparatus includes: a first communication unit which receives a video signal from an image device; a video processor which processes the video signal; a second communication unit establishes a wireless connection with another device; and a controller receives wireless connection information from the image device through the first communication unit, and controls the second communication unit to establish the wireless connection with the other device based on the received wireless connection information.