Patent ID: 7609183

Claim:
An analog-to-digital conversion apparatus to which an analog signal is split and supplied and which corrects digital data output from a plurality of analog-to-digital conversion sections that sequentially convert the analog signal in different timing by a predetermined phase, the analog-to-digital conversion apparatus comprising: an interleaving section that aligns the digital data respectively output from the plurality of analog-to-digital conversion sections according to the timing in which the digital data are respectively converted and generates a data sequence; and a correction arithmetic section that corrects a data value error of the data sequence caused by errors of frequency characteristics of the plurality of analog-to-digital conversion sections, based on a frequency characteristic of each of the analog-to-digital conversion sections, wherein said correction arithmetic section comprises: a data partitioning section that generates a plurality of partition data by partitioning the data sequence by a predetermined partition data number; a data inserting section that inserts data with data value zero at the head or end of each of the partition data by a predetermined insertion data number to sequentially output these data; an arithmetic section that sequentially acquires the partition data sequentially output from the data inserting section and sequentially outputs data after correction made by sequentially performing correction arithmetic according to the frequency characteristic of each analog-to-digital conversion section with respect to the acquired partition data; and a data connecting section that adds the data of the insertion data number at the end of each data after correction sequentially output from the arithmetic section according to each partition data and the data of the insertion data number at the head of the data after correction following that data after correction in order to sequentially connect that data after correction and the data after correction following that data after correction.