A method for converting a data stream in a first format into a data stream in a second format is provided. In a method for manufacturing a hybrid integrated circuit device of the present invention, a first resin film is formed so as to cover a first wiring layer. Using the conductive substrate as a power feeding layer, a conductive material is filled, by electrolytic plating, into hole portions of an insulating layer formed to cover the second layer circuit wiring to form external connection terminals. The beat frequency corresponds to a frequency difference between the outputs of the adjacent carriers. It is also possible to reliably feed the liquid into the liquid reservoir from the liquid-feeding port while confirming any rising of the liquid level through the transparent portion.