An infrared sensor includes a substrate including an insulating layer formed thereon, a thermoelectric conversion element mounted on the substrate through the insulating layer, and an infrared absorbing layer mounted on the thermoelectric conversion element. The algorithms have a forward-backward recursion structure similar to conventional Log-MAP algorithms. A method of making the non-woven elastic laminate fabric includes extrusion coating a non-woven web having CD elongation of at least 120% with a vinylidene isoprene polymer film, and then thermocalendaring a second non-woven layer having a CD elongation of at least 120% to the exposed film surface. The algorithm requires input of only a radius of each of the cylindrical conduits. If a bug will not occur in the new execution program 123, a program creating part 250 creates a new execution program 123. A back face of the light guide medium is printed with multiple reflective sections.