Abstract: A method of scaling data between memories of different horizontal sizes by calculating an increment expressed as an integer and a fraction relating the horizontal memory sizes, multiplying the fraction by the dynamic range of a fraction portion counter, and successively adding the integer portion in an integer portion counter and the fraction portion in the fraction portion counter, with a carry to the integer portion counter when the fraction portion counter overflows. The corresponding points in the memories are selected based upon the total count in the integer portion counter.

Abstract: In a speech recognition system using normalized spectrum matching, a second feature pattern is calculated and compared with reference patterns. The similarity obtained as a result of the comparison is used to determine overall similarity, from which the recognition is made. The second feature pattern can be a spectrum variation pattern, a level decrease pattern, or a spectrum relative value pattern.

Abstract: A postage value determining scale includes a system processor, a weighing device which generates weight indicative signals, a display and a keyboard for operator entry of information relating to the determination of postage and one or more memories which store postage data. The keyboard includes a plurality of nonilluminated multifunction keys with specific keys being assigned for the entry of special services such as certified mail, c.o.d., special delivery and the like. Upon detecting a keyboard entry assigned for such purpose, the processor recalls and sequentially displays indicia of special services previously selected by the operator and optionally the fee amount of each selected service. After displaying indicia of all the special services selected, the processor thereafter re-enters the previously displayed indicia in the display.

Abstract: Supervisory audio tones received from a mobile telephone unit are converted from analog to digital form. The tone is then converted to a complex number by bifurcating the tone path and multiplying one path by a sine function and the other path by a cosine function. The complex numbers are accumulated and the frequencies where significant power exists is found using the discrete Fourier transform. If the power at an assigned frequency exceeds a threshold, the corresponding supervisory audio tone is declared to have been detected.