Patent ID: RE38890

Claim:
A data converting device for generating output data converted corresponding to input data and a conversion level selected by look-up-tables (LUTs) with sequential reference to three or more LUTs, said data converting device comprising: a single memory device for storing at least three LUTs corresponding to a number of data converting modes by block units, each of said block units including a plurality of sub-LUTs corresponding to a number of conversion levels defined in each corresponding conversion mode; and an address generator for generating a series of addresses for accessing said memory device, a first address of said series of addresses being determined according to first conversion level data and input data, each address of said series of addresses following said first address being determined using corresponding conversion level data and data read out from one of said LUTs using a next previous address of said series of addresses, the number of addresses in said series being equal to the number of LUTs stored in said memory device, wherein a final address of said series of addresses indicates a location in said memory device where final output data is stored.