Abstract: An apparatus for generating a variable data base file from a single original entry control datum. The apparatus utilizes a microprocessor unit to interact with a logical number generator to modify the original entry control signal into a larger data base which may be similar to but not identical to the original datum signal.

Abstract: A simultaneous amplitude sequency apparatus utilizing a scanner/modulator unit to scan an image and provide an analog data signal, which is digitized in an A/D converter. The digital data signal is transformed by a Fourier transform unit into a frequency signal. A digital filter which allows only the high frequency terms to pass, preserves the sharp edges of the image that are required in the analysis of the imagery. The correlation portion of the system insures that the applicable amplitude data points are synchronized with the corresponding points in the sequency signal. Thus, compression of the imagery signal is achieved while insuring that the important information is preserved (i.e., sharp amplitude time varying changes). The high order of imagery compression which is in the range of 20/1 insures that the important data is preserved.