A mobile wireless communication device may include a multiple-band antenna on an antenna carrier and connected to a wireless transceiver. According to the active-driving organic EL light emission device of this structure, the numerical aperture can be made large. An operation field frequency determining unit generates decision data relating to shutter timing to be fed to the liquid crystal shutter glasses on the basis of predetermined conditions from the data relating to shutter timing newly obtained in succession, and holds the generated decision data. Said invention makes it possible to improve energy characteristics, increase a life service and producibility, to reduce hydromechanical losses and costs. The phase and frequency of the baseband sampling can be adjusted during operation of the receiver so that samples are taken very close to the optimum sampling position, at the peak of a chip waveform in the baseband signal. A width of hysteresis of the threshold value is set greater than the width needed to prevent hunting in control.