Samsung Electronics Co., Ltd.

Seog-Geun Lee

Jin-Woo Park

Hyon-Myong Song

Sung-Sun Park

Soon-Jin Kim

Jong-Kerl Lee

Byeong-Kuk Lee

Young-Jun Jung

In-Kyu Choi

Gyu-Bok Lee

Bok-Ki Kim

An ultra-slim portable terminal is disclosed. The ultra-slim portable terminal includes a body having a first portion and a second portion. An auxiliary display unit which is always exposed to the outside is provided on the upper surface of the first portion of the body, and the second portion of the body is recessed from the first portion of the body by a certain depth. A folder including a main display unit is connected to the body by a hinge to open and close the second portion. When the folder is folded onto the second portion, it is substantially parallel to the first portion.

Slim portable terminal

A device and method for using a rotating key on a mobile terminal is provided. The mobile terminal includes a plurality of dome switches which can detect a contact signal when pressed and a plurality of contact surfaces which can detect the position of the rotating key in each direction of rotation. The device and method comprises a folder opening/closing sensor for detecting whether a folder of the mobile terminal is opened or closed; first and second display sections for displaying menus or data according to the operation of the rotating key; and a control section for controlling the mobile terminal to display a menu or data selected by the operation of the rotating key on the first display section or the second display section according to an output from the folder opening/closing sensor.

Device and method for using a rotating key and controlling a display in a mobile terminal

A method for saving battery power in a wireless telephone which receives mode information from a base station in which information on a first mode where only a voice channel is searched, information on a second mode where a voice channel and a data channel are alternately searched while changing a search period of the data channel, and information on a third mode where a voice channel and a data channel are alternately searched at stated periods are registered. The method comprises searching mode information transmitted from the base station; searching a voice channel upon receiving first mode information from the base station; alternately searching a voice channel and a data channel while changing a search period of the data channel, upon receiving second mode information from the base station; and alternately searching the voice channel and the data channel at stated periods, upon receiving third mode information from the base station.

Method for saving power in a wireless telephone

Disclosed is a method and apparatus for adjusting alert sound which can prevent a user from being surprised or suffering ear damage by abrupt alert sound. According to the invention, alert sound is generated in a low level set lower than a normal level when an incoming call is received, and then the level of alert sound is adjusted to the normal level after a predetermined time period.

Method and apparatus for adjusting level of alert sound in portable telephone

A portable terminal device, which employs a display unit utilizing a holographic screen, a main housing, a holographic screen, and an optical system. The holographic screen is disposed at a predetermined portion of the main housing while being exposed to an exterior of the main housing. The holographic screen optically displays information by means of image-light which is projected to the holographic screen. The optical system is spaced apart from the holographic screen and provides the holographic screen with the image-light.

Portable terminal device having a display unit utilizing a holographic screen

Disclosed is a backlighting device for a dual LCD (Liquid Crystal Display). The backlighting device includes a circuit board with a through hole; a backlighting illumination device situated within the hole for radiating light in a first direction substantially perpendicular to a first face of the circuit board and in a second direction substantially perpendicular to a second face of the circuit board; a main LCD being situated on one face of the backlighting illumination device in the first direction, for displaying first information in the first direction; and a slave LCD being situated on another face of the backlighting illumination device through the through hole in the second direction, for displaying second information in the second direction.

Backlighting device for dual liquid crystal display and folder-type mobile phone therewith

An inadvertent off-hook apparatus for use in a telephone system having a handset for automatically restoring an inadvertently off-hook telephone to an on-hook in order to receive an incoming call. The apparatus comprises a current sensing unit comprising a photo-coupler coupled to one of a tip and a ring terminal of the telephone line, for sensing variations of current of the telephone line in response to an incoming call and detecting a handset misplacement signal indicating that the telephone is in an inadvertent off-hook condition; and a control unit connected to the current sensor unit, for disconnecting the voice network from the telephone line to block the speech path in response to the handset misplacement signal, and for connecting the voice network to the telephone line to form the speech path to answer the incoming call.

Growing community of inventors

Kumi-shi, South Korea

Seog-Geun Lee