An electronic endoscope apparatus includes an imaging element and a signal processing unit. In one embodiment, if a license associated with a content item permits a sharing peer to share the content item with a receiving peer, the sharing peer rebinds a cryptographic key associated with the content item to the receiving peer and generates a sharing license for the content item. Because the bit line is precharged by using a precharge transistor opposite in conductivity type to the select transistors, it is satisfactory to provide one precharge transistor for one bit line, greatly reducing the circuit scale.