Coded data generation or conversion – Converter compensation
Reexamination Certificate
2006-10-10
2006-10-10
Nguyen, Linh (Department: 2819)
Coded data generation or conversion
Converter compensation
C341S120000
Reexamination Certificate
active
07119724
ABSTRACT:
There is provided an analog-to-digital conversion apparatus that converts analog signals into digital signals. The analog-to-digital conversion apparatus includes: a plurality of analog-to-digital converters that converts analog signals into digital signals in different timing by a predetermined phase; a plurality of data inserting units that is provided corresponding to the plurality of analog-to-digital converters and outputs zero-inserted data that is made by respectively inserting data with data value zero between the digital data output from the respectively corresponding analog-to-digital converters by a predetermined number; a synthesizing unit that respectively synthesizes the zero-inserted data to generate the digital signal; and a plurality of filter units that is provided corresponding to the plurality of analog-to-digital converters, has filter coefficients based on a frequency characteristic of each of the analog-to-digital converters so that the digital signal generated form the synthesizing unit is a digital signal obtained when the frequency characteristics of the plurality of analog-to-digital converters are the same as one another, and passes through the corresponding zero-inserted data to supply the data to the synthesizing unit.
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Advantest Corporation
Nguyen Linh
Osha-Liang LLP
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