The present invention includes a receiver, an intermittent frame synchronizing method and a portable remote terminal which can reduce power consumption and cost, while the accuracy of generation of intermittent reception timings is maintained. Each cell can be formed as a recess filled with explosive material. The supported address space on the original processor for the code to be emulated is limited in such a manner that the conversion of address operands as described in the following steps leads to semantically equivalent behavior on the target processor. The predetermined non-round energy distribution covers an area of the designated region such that energy is more efficiently coupled into the designated region for the non-round energy distribution than energy coupled into the designated region for a round energy distribution covering the same area. A shutter is mounted on the fan duct. In the circuit, the compare and load unit detects instruction-read-memory-address from the program counter.