Samsung Electronics Co., Ltd.

Sejong University

Sejong Industry-academy Cooperation Foundation

Hankuk Glass Industries Inc.

Dong-il Shin

Dong-kyoo Shin

Jin Yong Kim

Soon-yong Choi

Byung-Seok Yu

Hee-Sook Yang

Jun-il Kim

Jong-il Jeong

Yong-bin Kim

Soo-Choel Chae

A method of encrypting a motion picture file and a method of digital rights management using the same, wherein encryption method includes: extracting information on the location of at least one video sample, which is a real-time streaming unit, from meta-data of the motion picture file; extracting the video samples based on the location information; encrypting the extracted video samples, excluding a start code within a video sample header of each extracted video sample, based on predetermined encryption information; and producing an encrypted motion picture file by recombining the encrypted video samples. Since the file is encrypted in units of video object planes (VOPs) while maintaining an MEPG-4 file format, the encryption method can be easily applied to a completed file format and streaming service is also possible.

Motion picture file encryption method and digital rights management method using the same

A single-sign-on method in a wired/wireless hybrid environment and a system using the method are provided. The single-sign-on method includes: requesting user authentication by transmitting information required for authentication of a user using wireless Internet to an authentication message generator; generating authentication domain location information including location information of a current domain and information required for processing a user authentication message and transmitting the generated authentication domain location information to the user; and if an authentication message of a markup language format is received from the authentication message generator, analyzing the user authentication message and permitting or rejecting access of the user to resources.

Single-sign-on method based on markup language and system using the method

A sealed double glazing unit having an outer pane with a countersunk hole punched in a corner thereof, and an inner pane with a hole punched in a corner thereof, opposed to the countersunk hole in the outer pane. A generally cylindrical liner is inserted into the countersunk hole in the outer pane, a bottom of the liner extending into, without passing through, the countersunk hole in the outer pane. A glazing unit is secured to a supporting member by a fixing member which is fixed through the liner, and a sealing member engages the holes in the inner and outer panes. This sealing member includes a guide ring having the same diameter as the diameter of the bottom of the liner, with a front end of the guide ring extending into the countersunk hole and abutting against the bottom of the liner. The sealing member also includes a ring-shaped boss concentric with and encircling the guide ring, the ring-shaped boss having an inner diameter that is larger than an outer diameter of the guide ring such that a space is formed between the guide ring and the boss. This space is bridged by a plurality of connecting parts extending between the outer diameter of the guide ring and the inner diameter of the ring-shaped boss.

Sealed double glazing unit

A sensor rotating apparatus for allowing a sensor to have a sensing angle of 360 degrees includes a drive motor, first and second reduction gear assemblies for reducing the rotational power of the motor, a sensor turntable for rotating a sensor using the reduced rotational power of the motor, a hub for rotatably supporting the sensor turntable, a rotating shaft for rotating at the same time of rotation of the sensor turntable and transmitting a sensing signal of the sensor to a control circuit unit, a bearing assembly for supporting rotation of the rotating shaft and being electrically connected to input terminals of the rotating shaft, and a support member for preventing the bearing assembly from undesirable separation from the rotating shaft due to the rotational force of the shaft.

Sensor rotating apparatus

Growing community of inventors

Seoul, South Korea

Dong-il Shin