This invention can generate encoded data of a high compression ratio of not only a halftone image but also a vertical stripe portion or text portion, which is weak in the conventional method, by a simple process or circuit scale, and can decode the encoded data on the decoding side by a simple process or circuit scale. The n-type drift semiconductor portion 3 is placed on a principal surface of the n+ type drain semiconductor portion 2 and has first to fourth regions 3a to 3d extending in a direction intersecting with the principal surface. Both the well region and adjacent edge termination zone are disposed at an upper surface of the upper layer, and an oxide layer overlies the upper layer and the edge termination zone. The rotational coupling interconnects the heating element with the housing. The precursor is polymerized into a solid phase material. The information may include dynamic load-oriented and function-oriented information regarding the servers, as well as static configuration information, from which server utilization-oriented statistics may be distilled to identify candidate servers for server consolidation.