Patent ID: 7292166

Claim:
An analog-to-digital conversion apparatus to which an analog signal is divergingly supplied and which corrects digital data output from a plurality of analog-to-digital conversion units that sequentially converts the analog signal in different timing by a predetermined phase, the analog-to-digital conversion apparatus comprising: an interleaving unit operable to align the digital data respectively output from the plurality of analog-to-digital conversion units according to the timing in which the digital data are respectively converted and to generate a data sequence; and a correction arithmetic unit operable to correct a data value error of the data sequence caused by an error of a frequency characteristic for each of the plurality of analog-to-digital conversion units, based on said frequency characteristics of each of the analog-to-digital conversion units, wherein said correction arithmetic unit comprises: a data partitioning unit that generates a plurality of partition data by partitioning the data sequence by a predetermined partition data number; a data inserting unit 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 unit that sequentially acquires the partition data sequentially output from the data inserting unit and sequentially outputs data after correction made by sequentially performing correction arithmetic according to the frequency characteristic of each analog-to-digital conversion unit with respect to the acquired partition data; and a data connecting unit that adds the data of the insertion data number at the end of each data after correction sequentially output from the arithmetic unit 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.