Matrix multiplier and picture transforming coder using the same

摘要: A matrix multiplier used in a picture transforming coder is provided for multiplying an input signal by coefficient configured to comprise as many constant multipliers absolute values of coefficients the transform handling common multiplicands, plurality selectors selecting necessary computing elements product from multiplication results output and respective accumulator assigned each accumulating selected finally provide element product. As result, since processing can be done merely performing fixed multiplications matrix, implemented relatively simple combination adders, allowing entire size information or like reduced.