Abstract: The present invention discloses a button display apparatus of a refrigerator which can improve an illumination effect of operation buttons by condensing light of lamps for illuminating display characters or contours of the operation buttons on the operation buttons. The button display apparatus of the refrigerator includes: a control board; switches installed on the front surface of the control board, for recognizing external operations; lamps mounted on the front surface of the control board around the switches, for irradiating light according to the recognition operations of the switches; a cover installed to cover the front surface of the control board, and composed of button printed units; contact units for displaying operation ranges of the user on parts of the button printed units; and condensing members for covering the paths from the lamps to the contact units, so that the light generated by the lamps can reach the contact units.

Abstract: A wireless communication terminal for controlling a level of an alarm to notice receipt of a call or a message by using a preference level and a method there are disclosed. The wireless communication terminal includes: a wireless transceiver for transmitting/receiving a call or a message; a memory for storing telephone numbers, preference levels per each of the stored telephone numbers, and messages; an output unit for outputting an alarm signal; a preference database for storing preference levels of telephone numbers; and a controller for identifying a telephone number of a received call or message, and controlling the level of the alarm based on the controlled level by using a preference level set based on the identified originator's telephone number according to a alarm level control mode.

Abstract: A display apparatus for selectively displaying a distinctive image signal of a selected input mode, including: a color temperature detector which detects a circumferential color temperature; a color data memory which stores color data of a proper color sense according to selected input mode and the circumferential color temperature; a color data converter which converts the color data and outputs converted color data; and a controller which controls the color data converter so as to convert the color data of the image signal according to the color data of the color data memory corresponding to the selected input mode and the detected color temperature.