Embodiments of the present invention provide a method, apparatus and system of decoding spatially multiplexed signals. In certain embodiments, a portion of the outer wall is removed to expose the flow paths to a distribution chamber within an inlet manifold divided into an inlet section and a distribution section by a distributor. A Q factor of a resonance mode of one of the first and the second double-mode surface acoustic wave resonator filter is less than that of the other surface acoustic wave resonator filter, or an energy transmittance of the reflectors in at least one of the first and the second surface acoustic wave resonator filters ranges from about 12% to about 28%. The disturbance is detected by a laser lens and represented by a signal corresponding to the size of the defect. The semiconductor elements and the external connection terminals are embedded in the substrate and electrically connected to each other through wires within the substrate while, at the same, time exposing the reverse surface of the semiconductor elements and the terminal surface of the external connection terminals to the same surface side of the substrate. The method includes generating Media Abstraction Layer information for abstracting information on the multimedia data to be transmitted, generating a multimedia data packet including said MAL information, and transmitting the generated multimedia data packet to a network entity.