METHOD FOR COMPLETE ADDITION-SUBTRACTION OF NUMBERS ENCODED BY SIGNALS, AND DEVICE WHICH IMPLEMENTS SAID METHOD Russian patent published in 1999 - IPC

FIELD: computer engineering. SUBSTANCE: method involves generation of two three-level signals using Popov wave functions pop_q(ϕ), which are represented by means of two orthogonal constituents pop_q(ϕ) = cop_q(ϕ)+isip_q(ϕ).. Each integer k_x and k_y from k_x,y = 0 till k_x,y = q-1, in notation systems with base q = 4 and q = 8 are represented by phases ϕ_x,y = 2πk_x,y/q. Each phase ϕ_x,y is encoded by values of signal levels cop_q(2πk_x,y/q) and sip_q(2πk_x,y/q). Values of orthogonal constituents of Popov functions cop_q(ϕ) and sip_q(ϕ) are detected by comparison to thresholds ±ξ of respective trigonometric functions cosϕ and sinϕ for argument values ϕ = 2πk/q. Phase addition is performed by generation of signals cop_q(s) and sip_q(s),; phase subtraction by cop_q(-s), sip_q(-s),, which represent codes of sum and difference of items k_x and k_y.. Phase addition and subtraction follows standard equations for addition and subtraction of phases of sine waves. EFFECT: increased functional capabilities due to encoding of numbers by means of three-level signals, their addition and subtraction in notation systems with bases q=4 and q=8. 3 cl, 15 dwg, 41 tbl