A method for detecting an ellipsoid includes: extracting an ellipsoid candidate; extracting an ellipsoid contour; calculating an ellipsoid parameter; calculating an adaptability ratio; and eliminating the ellipsoid candidate. Detecting portions 905A, 905B of the first and second position detecting sensors 93A, 93B are arranged on a straight line L1 connecting acting portions 904A, 904B of the first and second actuators 91A, 91B and near the acting portions 904A, 904B. The abnormal condition detector detects whether at least one operating condition of the integrated circuit card is within one of a suspend region or a reset region. A family of narrow-band signaling methods is disclosed to successfully pass data-carrying signals through the low-bit rate modes of the EVRC-B vocoder commonly used in CDMA wireless channels. In some aspects, the supplemental nodes can also replicate pilot signal transmissions on OFDM symbols employed by the macro base station for pilot signals, to give consistent downlink channel for both traffic and pilot signals.