Patent ID: 6229927
Filing Date: 2001-05-08
Classification: G06F,H03M,H04N

Abstract:
A forward transform comprisingan input buffer having an input coupled to receive input data and first and second outputs to transfer even and odd samples;a first level transform unit coupled to receive the even and odd samples and generate coefficients, wherein horizontal low pass and vertical high pass coefficients are outputs of the forward transforma memory having a first input coupled to receive ss coefficients generated by the first level transform the first level transform unit and a second input to receive ss coefficients from higher level transform filtering;an order unit having a first input coupled to the memory to order ss coefficients for higher levels of filtering; anda first filter unit coupled to the order unit to apply a plurality of transform levels, wherein the filter unit performs a higher level transform ss coefficients received from the order unit, wherein the filter unit generates ss coefficients values that are fed back to the second input of the memory and the second input the order unit.