Abstract: Disclosed is a remote la carte system and method. The remote la carte system comprises a display part for displaying menu and/or game screen; a data input part for selecting and inputting food; a controller for reading food menu data stored in a memory part and displaying in the display part, scanning the data inputted in said data input part, and outputting a food order data and a scent emission control data; a send/receive part for sending food order data to a main control office, receiving an answer signal outputted from the main control office, and sending the answer signal to said controller; a heat generation control part for driving heat generation plate in which condensed scent related to the food in the menu is placed; and a scent selection control part for diffusing scent emitted by the heat generation plate opening scent bag depending upon the scent diffusion control data outputted in said controller.

Abstract: A frequency multiplier is provided that increases operational stability by using a Delay Locked Loop (DLL). The frequency multiplier includes a phase detector for detecting a phase difference between an input signal and a feed-back signal, a loop filter for outputting a control signal based on the phase difference detected by the phase detector and a voltage-controlled delay unit for varying a delay ratio of the input signal and outputting divided signals in accordance with the control signal from the loop filter. A first SR flip-flop receives a pair of earlier output signals that are divided into 1/4 and 2/4 period signals from the voltage-controlled delay unit and outputs a first duty cycle signal. A second SR flip-flop receives a pair of later output signals that are divided into 3/4 and 4/4 period signals from the voltage-controlled delay unit and outputs a second duty signal.