VLSI OF SYSTOLIC ARRAY FOR DISCRETE WAVELET TRANSFORM

摘要

In the systolic array structure for the discrete wavelet transform calculation, the present invention stores coefficients of a low frequency wavelet filter and a high frequency wavelet filter, and analyzes one level of analysis wave by a processing element that multiplies and outputs an input value and a stored value. Systolic array for discrete wavelet transform calculation, characterized in that the high frequency filter output and the low frequency output are alternately calculated during the calculation of the letlet and the calculation of the composite wavelet of one level so as not to calculate an unused output sequence at the next level. Present the structure.