A multifunction apparatus and method for enhancing store binary image data, is disclosed. It utilizes as calibration signal a wideband sinusoidal Frequency Modulated Continuous Wave waveform with a modulation index and modulation frequency chosen to generate spectral components that fall within the receiver Doppler passband of the radar. In a write mode, a plurality of read data stored in the readwrite data register array unit or input data applied from a timing data buffer unit are stored in a cell array block through the common data bus unit.