Lg Electronics Inc.

Mwstory Co., Ltd.

Secheol Oh

Hyunsun Yoo

Sangwoo Seo

Hyungwoo Park

Donghyun Kim

Hyuksoo Chang

Jaeyoung Kim

Kunwoo Lee

Myunghyun Park

Daegull Ryu

A wireless sound equipment including a band having elasticity, a housing provided at both ends of the band, the housing having a receiver holder formed in one end, a receiver coupled/decoupled to/from the receiver holder, a printed circuit board provided in the housing, a rotary member provided in the housing and an audio cable having one end connected to the rotary member and the other end connected to the receiver is provided. The rotary member includes an audio substrate connected to the printed circuit board and having a circular connecting terminal and an audio brush connected to the one end of the audio cable to transmit a signal transmitted from the printed circuit board to the audio cable while moving over the circular connecting terminal of the printed circuit board.

Wireless sound equipment

A headset is provided. The headset includes: a hook hung on a user's neck; a pair of sound output units connected to both end parts of the hook; and a clipping module provided to at least one sound output unit and coupled to a cap worn by the user to allow the at least one sound output unit to be detachable.

Headset

Disclosed is a security USB storage medium generation and decryption method. The method comprises outputting information for requesting an input of a user password to be set through the output interface, generating a random key and a disk key based on first user password when the first user password is input from the input interface in response to the input requesting of the first user passwords, generating first encryption and decryption keys by hashing the first user password and the random key, when the random key and the disk key are generated, generating a security volume body part by classifying the storage region into a header and a body part using the first encryption and decryption keys, encrypting first data, storing the data in the header, generating a security volume header, encrypting second data using the disk key and then storing the data in the body part.

Security USB storage medium generation and decryption method, and medium recorded with program for generating security USB storage medium

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Seoul, South Korea

Secheol Oh