Patent ID: 6166781
Filing Date: 2000-12-26
Classification: H04N

Abstract:
An apparatus for correcting non-linear characteristics of a system, comprising:a first look up table for storing first data and outputting the stored first data by using the upper bits of an N-bit digital signal input to the system as an address;a second look up table for storing second data and outputting the stored second data by using the upper bits of the digital signal as an address;a multiplier for multiplying the second data, output from the second look up table, by the lower bits of the digital signal, and outputting the product; andan adder for adding the first data, output from the first look up table, to the product output from the multiplier,wherein the sum output by the adder is an N-bit digital corrected signal for compensating for the non-linear characteristics, used by the system instead of the N-bit digital signal, and the first data is a predetermined number of digital corrected signals, and the second data is the gradient of the digital corrected signal with respect to the gradient of the digital signal.