METHOD OF DATA CONVERSION Russian patent published in 2005 - IPC

FIELD: data processing.

SUBSTANCE: before beginning of decoding all possible non-repeating meanings of combinations of alphabet u_i are recorded randomly into code spreadsheet with N lines by means of random numbers detector (RND). Number i of code line of code spreadsheet Tk is recorded in each line u_i of address spreadsheet Ta. Meaning of combinations of alphabet u_i is recorded in spreadsheet Tk, where N-size of alphabet coincident with number of lines of code and address spreadsheets Tk and Ta, u_i is original combination being subject to coding. Moreover for filling any next i-line and line from code spreadsheet Tk (where i equals 1 to N) the next meaning of combination of alphabet from RND which is subsequently compared with each i-th meaning from recorded combinations of alphabet in code spreadsheet Tk. In case there is no coincidence with any recorded combinations of alphabet, the next meaning of combination of alphabet u_i is recorded into i-th line of code spreadsheet Tk. When coding line u_i of address spreadsheet Ta the address A(u_i) of original combination is read out from code spreadsheet Tk. Value of coded combination v_i of original combination u_i at value of parameter of conversion of ξ_i equals to value of combination of alphabet being stored in line A(v_i) of code spreadsheet Tk, which address is determined as A(v_i)=A(u_i)+ξ_i for module of N number. Value of coded combination v_i is read out from line of code spreadsheet Tk with address A(v_i). When decoding coded combination v_i at value of conversion parameter of ξ_i the value of combination is defined, which combination is stored in address line A(u_i) of spreadsheet Tk which address is determined as A(u_i)=A(v_i) - ξ_i for module N number. Value of u_i combination is read out from line of code spreadsheet Tk having address A(u_i).

EFFECT: increased speed of data processing.