Other

Samsung Electronics Co., Ltd.

Lg Electronics Inc.

Olor Co., Ltd.

Myung Hee Lee

Ji Woon Jung

Ju Hyun Lee

Yun Seung Shin

Seung Seok Jo

Mobile phone case

A mobile terminal including a display unit configured to simultaneously display a message list region, a phonebook search region and a user input region on the touch screen, an activating unit configured to activate at least one of the message list region and the phonebook search region, an inputting unit configured to input contents in the user input region, and a control unit configured to control the display unit to display at least one message including the contents input through the user input region in the message list region when the user input region is activated, and to display at least one phonebook data item including the contents input through the user input region in the phonebook search region when the phonebook search region is activated.

Mobile terminal with touch screen and method of processing message using the same

A digital-to-analog converter (DAC) and a digital-to-analog converting method are provided. The DAC includes a first capacitor, an operation amplifier having a first input terminal connected to the first capacitor, a second input terminal, and an output terminal, where the first input terminal is a (&#x2212;) input terminal and the second input terminal is a (+) input terminal; and a switching circuit having a plurality of switches each being switched in response to a corresponding switching signal from among a plurality of switching signals. The switching circuit performs switching so that the difference between a first voltage and a second voltage can be stored in the first capacitor connected to the operation amplifier during a first period, and performs switching so that an output signal can be output by reflecting a third voltage in the difference stored in the first capacitor during a second period.

Digital-to-analog converter, and method thereof

Growing community of inventors

Seoul, South Korea

Myung Hee Lee