Samsung Electronics Co., Ltd.

Neo-freeline Inc.

Won-tae Kim

Tae-Hwan Kim

Sang-Hee Lee

Sam-Yong Bahng

Min-Soo Kang

Jong-Keun Ahn

Yong-Ji Kim

Dong-kwon Kim

Woo-sun Hwang

Tae-Jin Yoo

A mobile communication terminal connected to the portable electronic device encodes a system serial number and an authentication key, generates an integration secrete key, and transmits the integration secrete key to an authentication center computer. The authentication center computer decodes the integration secrete key, performs authentication registration, encodes a temporary service approval key and a temporary integration authentication key, and transmits the temporary service approval key and the temporary integration authentication key to the mobile communication terminal. The mobile communication terminal decodes the temporary integration authentication key, obtains approval for the relay, and transmits the temporary service approval key to the portable electronic device. The portable electronic device decodes the temporary service approval key, performs authentication for utilizing a service, and applies the temporary service approval key to an application service.

Method and apparatus for authentication of portable electronic devices

A portable system, method thereof, and a power consumption controller for controlling power consumption in a portable system are described. The portable system may include a storage unit, a module processing data, and a controller regulating power supplied to the module. The controller may regulate the module to perform a backup operation when a power saving mode begins and to interrupt the power after the backup operation is completed.

System and apparatus for allowing data of a module in power saving mode to remain accessible

A Universal Serial Bus (USB) device for exchanging data with a USB host connected via a USB cable is provided. In a USB device for exchanging data with a USB host connected via a USB cable, the USB device comprises a USB encoder for outputting USB encoding data; a reset controller for generating a reset control signal that is activated in a predetermined logic level when the USB device needs to be reset; and a data output unit for selecting and outputting one of the USB encoding data and the logic low signal, in response to the reset control signal. According to the USB device of the present invention, the user need not physically disconnect the USB cable. Instead, the user manually selects the reset of the USB device from the programs of the PC that includes the USB host. In addition, the automatic program saved in the system equipped with the USB device helps to implement the reset operation of the USB device automatically when a predetermined situation occurs.

Universal serial bus device having logical circuit for conversive and immediate host reset operation

Growing community of inventors

Seoul, South Korea

Won-tae Kim