An input image signal is coded by an encoder to be outputted as a basic code string, and the basic code string is delayed by a code-string delay circuit for a predetermined period of time to be outputted as an additional code string. In embodiments, the image sensor may include a semiconductor substrate having a photo detector, and a micro-lens array including lenses for guiding light incident from an exterior toward the photo detector, wherein the micro-lens array may include a dry film resist material. In a representative example, when the user connects over a Wi-Fi network, he selects \u201cWi-Fi SMS\u201d option from a client. A super-coolable composition is disposed within the core cavity encapsulating at least a portion of the cooling member.