A method of transforming a serial scrambler to a parallel scrambler, a parallel scrambler and a double-edge-triggered register with XOR operation are provided. The shape is, preferably, a shape in which a field concentration coefficient \u03b2 in the Fowler-Nordheim equation is expressed by hr where r denotes the radius in an arbitrary position and h denotes height from the arbitrary position to the tip. Upon reception of each super-frame structure by a data device, coarse synchronization is performed with another data device acting as a coordinator device for the wireless data communications system. In addition, a plurality of bond wires is attached through the at least one opening in the carrier substrate between the active surface of the die and the second surface of the carrier substrate. The support wall is configured to provide a gap between the collimating lens and the support wall to enable the collimating lens to be adjusted from an initial position to the particular position.