The present invention discloses a laundry amount sensing apparatus and method for a washing machine. Each optical characteristics measuring unit further includes three units. With the PFC controller, the current keeping the triac in the on-state is supplied by the DCDC converter, and the LC resonance is reduced. When open, the door functions as a stand for a mobile device in both the vertical position and horizontal position and bosses provide resistance to the door opening. The method and apparatus may be configured to determine whether content received using a broadcast type format is to be transmitted using a unicast type format, and to map the content to a unicast reservation upon a determination that the content is to be transmitted using the unicast type format. The invention thus relates to the plants, seeds and tissue cultures of the variety CH744092, and to methods for producing a corn plant produced by crossing a corn plant of variety CH744092 with itself or with another corn plant, such as a plant of another variety.