Lg Electronics Inc.

Industry-university Cooperation Foundation Hanyang University

Jongmyeong Lee

Young Moo Lee

Hye Jin Jo

Mariola Calle

Jooyoung Lee

Jaeyoung Han

Sungmin Sohn

Byunghoon Min

Inchang Yang

Yoonju Im

Yu Seong Do

Jong Geun Seong

Won Hee Lee

The present invention relates to a mobile terminal, an audio output device and an audio output system comprising the same. The mobile terminal according to an embodiment of the present invention comprises: a memory for storing audio data; a communication unit for receiving a repetitive radio signal from the audio output device; and a control unit controlling the audio data such that the audio data is transmitted to the audio output device in a wireless manner when the strength or the level of the repetitive radio signal is a first predetermined value or more, while reproducing the audio data, wherein the communication unit comprises a first communication module for receiving the repetitive radio signal and a second communication module for outputting the audio data to the audio output device. Therefore, the audio output device can output a sound of the audio data reproduced by the mobile terminal.

Mobile terminal, audio output device and audio output system comprising same

The present disclosure relates to a membrane for flue gas separation containing a crosslinked, thermally rearranged poly(benzoxazole-co-imide) copolymer prepared simply by heat-treating a membrane prepared from an o-hydroxypolyimide copolymer having carboxylic acid groups such that thermal crosslinking and thermal rearrangement occur simultaneously or a membrane for flue gas separation containing a crosslinked, thermally rearranged poly(benzoxazole-co-imide) copolymer having a benzoxazole group content of less than 80% in the polymer chain, prepared from transesterification crosslinking of an o-hydroxypolyimide copolymer having carboxylic acid groups and a diol-based compound followed by thermal rearrangement, and a method for preparing the same. In accordance with the present disclosure, a crosslinked, thermally rearranged poly(benzoxazole-co-imide) copolymer membrane for flue gas separation can be prepared simply through heat treatment without requiring a complicated process such as chemical crosslinking, UV irradiation, etc. for forming a crosslinked structure and a membrane for flue gas separation prepared therefrom exhibits superior permeability and selectivity. Also, the method is applicable to commercial-scale production because the preparation process is simple.

Membranes for flue gas separation comprising crosslinked, thermally rearranged poly(benzoxazole-co-imide) and preparation method thereof

The present disclosure relates to a crosslinked, thermally rearranged poly(benzoxazole-co-imide) copolymer membrane prepared simply by heat-treating a membrane prepared from an o-hydroxypolyimide copolymer having carboxylic acid groups such that thermal crosslinking and thermal rearrangement occur simultaneously or a gas separation membrane containing a crosslinked, thermally rearranged poly(benzoxazole-co-imide) copolymer having a benzoxazole group content of less than 80% in the polymer chain, prepared from transesterification crosslinking of an o-hydroxypolyimide copolymer having carboxylic acid groups and a diol-based compound followed by thermal rearrangement, and a method for preparing the same (a membrane for flue gas separation is excluded). In accordance with the present disclosure, a crosslinked, thermally rearranged poly(benzoxazole-co-imide) copolymer membrane for gas separation can be prepared simply through heat treatment without requiring a complicated process such as chemical crosslinking, UV irradiation, etc. for forming a crosslinked structure and a gas separation membrane (a membrane for flue gas separation is excluded) prepared therefrom exhibits superior permeability and selectivity. Also, the method is applicable to commercial-scale production because the preparation process is simple.

Crosslinked, thermally rearranged poly(benzoxazole-co-imide), gas separation membranes comprising the same and preparation method thereof

Disclosed are a method and apparatus for accessing an electronic device having a hot spot function. The method for accessing an electronic device having a hotspot (AP) function includes receiving a beacon signal from an electronic device having a hotspot function, searching for at least one electronic device having a hotspot function on the basis of the beacon signal, receiving an input signal selecting an electronic device to be accessed from among the at least one searched electronic device, generating identification information for requesting permission of an access from the selected electronic device, the identification information indicating specific information generated by a specific input signal and variably generated, transmitting the identification information to the selected electronic device, and receiving a response signal regarding whether an access is permitted from the selected electronic device on the basis of the identification information.

Apparatus and method for accessing electronic device having hot spot function

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Seoul, South Korea

Jongmyeong Lee