Patent ID: 7508895
Filing Date: 2009-03-24
Classification: G10L

Abstract:
1. An oversampling apparatus for oversampling decoded data on a frame by frame basis at an oversampling ratio of α, and outputting the oversampled data on a frame by frame basis, the oversampling apparatus comprising: an output buffer that has a memory capacity α+1 times as much as one frame of the decoded data, such that the output buffer is divided into memory areas a first portion that operates during a first time slot sharing (α−1)/α of a time length of a current frame N for writing decoded data of the current frame N into the memory area α+1, and for allowing the output buffer to output a first part of oversampled data of a preceding frame N−1 which has been previously written in the memory areas a second portion that operates during a second time slot sharing 1/α of the time length of the current frame N for reading the decoded data of the current frame N written in the memory area α+1 of the output buffer so that the memory area α+1 is made free and the read data of the current frame N is oversampled, and writing the oversampled data of the current frame N into the free memory area α+1 and the free memory areas a third portion that controls the output buffer to shift the addresses of the memory areas