An electrical connector includes a base, a cover and at least one elastic member. This is accomplished by having a layered construction comprising different fabrictextile materials where the enhanced range of motion and airflow are desired. Then a global master process is created on a physical computer system on which neither client nor server processes are running. The proximity verifier may notify the package designer of any signal vias which are not sufficiently close to ground vias, such as by providing visual indications of such signal vias in a graphical representation of the package design displayed on a display monitor. If this sorting processing is applied to compression processing having a characteristic that a compression ratio is not increased in a high-frequency region, it becomes possible to improve a compression ratio without damaging a quality of reproduced data by decompression at all.