Patent ID: 7251575

Claim:
A method for measuring the position of an object, the steps of said method comprising: calculating a first digital position signal (POS) which represents a position measured by a position sensor from an input sine signal (SIN) and an input cosine signal (COS) produced by the position sensor; digitally filtering said first position signal for forming a second digital position signal (POS′) having a resolution (k) which is higher than that of said first digital position signal (POS); producing an output sine signal (SIN′) and an output cosine signal (COS′) as a function of the second digital position signal (POS′), the input signals (SIN, COS) having signal periods (f p ′) which are multiples of the signal periods (f p ″) of the output signals (SIN′, COS′) respectively, such that the frequency of the output signals (SIN′, COS′) is increased relative to the frequency of the input signals (SIN, COS), respectively; and filtering out position signal errors which are typical of the signal transmitter by using stored error curves (ERR) which are dependent on the signal transmitter.