A card holding structure in which each held card is visible, and from which a desired card is easily extracted when a plurality of cards are held, and a vehicle console box having the same are provided. 0<fbfL where fb is the back focus of the objective optical system in air and fL is the focal length of the entire objective optical system. A listening step on said second channel listens for an event identifying the transmission of the subsequent segment of the data stream and a step for changing reception channel by switching from said second channel to the current broadcast channel or another broadcast channel.