Abstract: An augmented reality filter selecting user equipment, includes a display unit display to display a real image including a target object and a plurality of filter icons, a user input unit to receive a user command, the user command including a selection of a target filter icon and a movement of the target filter icon, and a control unit to control the display unit to display the target object and filtered AR information corresponding to the target object. A method for selecting a filter includes displaying a real image including a target object and a plurality of filter icons, receiving a command to select a target filter icon, applying the target filter icon by moving the selected target filter icon onto a target object on the displayed image, and displaying the target object and information corresponding to the target object, in which the target filter icon is applied.

Abstract: A polarity discriminating method and signal processing circuit for a vapor sensor in a microwave oven is disclosed. The control section operates a fan motor so as to discriminate the polarity of a detecting signal supplied from the vapor sensor, which is varied with the wind produced by the fan motor. After the control section initializes variables of counters, the control section compares the magnitude of the signal-processed detecting signal supplied from the detecting signal processing circuit section with the magnitude of a reference detecting signal in a specified range on the phase coordinate axis. Meanwhile, the control section discriminates whether the slope of the curve of the signal-processed detecting signal is positive or negative, thereby discriminating whether the vapor sensor operates in a positive polarity mode or negative polarity mode.

Abstract: A method for automatically controlling cooking by using a vapor sensor in a microwave oven is disclosed. The method for automatically controlling cooking air-cools the cavity for a predetermined time by means of the driving of a fan motor during the automatic cooking operation, and respectively compares magnitude and phase of a signal-processed detecting signal supplied from a detecting signal processing circuit section with magnitude of reference detecting signal and values of reference phases in order to discriminate the polarity of the signal-processed detecting signal. Also, the executing time of the air-cooling operation related to a cooking chamber, which is additionally provided in response to the discriminated polarity, is discriminately adjusted.

Abstract: A method for controlling cooking by using a vapor sensor in a microwave oven measures and records a magnitude of a detecting signal from the vapor sensor in response to water vapor generated from food subjected to heating. When the temperature of food is judged to exceed a predetermined temperature on the basis of the measured magnitude of the detecting signal, a control section compares the average magnitudes of the detecting signals from the vapor sensor with reference magnitudes to judge whether the temperature of food subjected to heating corresponds to a reasonable temperature. If the temperature of food is lower than the reasonable temperature, the food is additionally heated for a preset time. Thus, the outputs of the vapor sensor varied according to the sizes of containers filled with food are selectively controlled to prevent the malfunction of the vapor sensor caused by the different sizes of containers.