Samsung Electronics Co., Ltd.

Daewoo Electronics Co., Ltd.

Daewoo Electronics Corporation

Jae-Duck Lee

Dohyung Kim

Young-Ky Kim

Ki-Ho Cho

Nam-Ho Lee

Im-Suk Choi

Ye-Sul Ha

Min-Ho Park

An apparatus and a method to support visible and audible communications using various multimedia services are provided. A method to provide communications using a multimedia service in a server of a communication system is provided. The method includes receiving a voice call connection request for a second device from a first device. The method also includes providing the first device with visual multimedia information generated in advance, over a web network in relation to the second device. The method further includes connecting a voice call between the first device and the second device.

Communication apparatus, method, and system for using multimedia service

Methods and apparatuses are provided for operating a server apparatus for providing a composite Automatic Response System (ARS) service through a mobile communication network. An ARS scenario and composite ARS related information are received from a first terminal. The composite ARS related information includes video ARS related information and voice ARS related information based on the ARS scenario. The ARS scenario and the composite ARS related information are stored. A call establishment request message directed to the first terminal, is received from the second terminal. The composite ARS related information is provided to the second terminal in response to the received call establishment request message. A call is established between the first terminal and the second terminal in response to an input for a call connection request, directed to the first terminal, received while the composite ARS related information is provided to the second terminal.

Composite ARS service providing method and apparatus

A method for performing a hard hand-off between service areas in a cellular mobile communication system is provided. The method for performing a hard hand-off according to the invention includes the steps of setting an area of services covered with a frequency assignment (FA) unavailable to adjacent stations to be a boundary cell, entering into the set boundary cell by a mobile communication terminal during communication, and searching FAs of adjacent stations excluding the base station currently engaged in communication with said mobile communication terminal so as to determine a target FA, with which the mobile communication terminal is to perform a hard hand-off. The method for performing a hard hand-off according to the invention can prevent deterioration of call qualities caused by unnecessary hard hand-offs, and reduce the load on a system.

Method for performing hard hand-off in cellular mobile communication system

An versatile vacuum cleaner is disclosed which comprises a main body, a socket, a first cleaner, a second cleaner, a motor assembly, a cord reel, a handle, and an exhaust duct, and can be converted easily into different configurations each suitable for a specifically different type of vacuum cleaning operation. Improvements are made in details such as the arrangement or the configuration of the main body, the socket, the first cleaner, the second cleaner, the cord reel, the handle, and exhaust duct, thereby improving the operability of the vacuum cleaner and improving the performance thereof.

Versatile vacuum cleaner

A vacuum cleaner having a noise reduction system which can effectively reduce noise is disclosed. The noise reduction system has a casing, a motor cap disposed in the casing such that it can surround a motor, a first sound-absorbing material provided in the inner wall of motor cap, and a second sound-absorbing material provided in the inner wall of the casing. The noise reduction system lengthens the fluid path in the vacuum cleaner so that air can fully contact the first and second sound-absorbing materials, thereby reducing the noise caused by friction between the sucking air and elements of the vacuum cleaner.

Growing community of inventors

Seoul, South Korea

Jae-Duck Lee