Lg Electronics Inc.

Seok Woo Lee

Ki Jun Kim

Young Woo Yun

Li-Hsiang Sun

Young Cheul Yoon

Sang Gook Kim

Young Jun Kim

Shu Wang

Jong Hoe An

Chan Ho Kyung

Kyung Yul Kim

A method of providing a point-to-multipoint service in a mobile communication system and transmission controlling method thereof are disclosed, by which a better quality of a point-to-multipoint service can be provided in a manner of coping with time-variable channel situation variable adaptively. In a mobile communication system providing a point-to-multipoint service, the present invention includes the steps of receiving data for the point-to-multipoint service from a base station, measuring a reception quality for the received point-to-multipoint service data, and transmitting reception quality information for the point-to-multipoint service data to the base station.

Method of providing point-to-multipoint service in mobile communication system

A complex button assembly and a portable multimedia device using the same. The complex button assembly is installed to an upper end of a case which defines an external appearance of the portable multimedia device. The complex button assembly is provided with a plurality of buttons to receive information on an operating state of the multimedia device. The complex button assembly is installed to face upwardly on the upper surface of the case or rearwardly and upwardly on the upper surface of the case such that a user can easily operate the portable multimedia device. In the complex button assembly, a button body having first and second button units is installed in a penetration portion of a button frame. A jog window is further formed in a middle portion of the button body in which a jog button is installed.

Complex button assembly and portable multimedia device using the same

Growing community of inventors

Gwangmyeong, South Korea

Seok Woo Lee