An inverter circuit charges a capacitive load 4 incrementally by repetitive fly-back in an inductor 8 connected in series with an FET 9 across DC input terminals 2,3. One end of the first pivoting member is fixed with a display unit and the other end crosses through the first hole and is then fastened with the first fastening member. A plurality of constellation points around an estimated value are selected as the detected values of the transmitted data symbol after the estimated value of one of the transmitted data symbols is calculated. A variety of illustrative mechanical support schemes are possible. The subsequent heating step is optional and is performed to further increase the relaxation of the SiGe alloy layer.