To reduce a rounding error by quantization as much as possible, when a data obtained by quantizing an analog signal is converted to the data with more bit numbers.
In a data conversion device including a data conversion means for sequentially converting a first data in which the analog signal is quantized with a first bit number, to a second data of a second bit number, the first data and the second data can take a first maximum value and a second maximum value, respectively. The data conversion means is composed of a first conversion means for converting the first data to the second data by adding 0 to a lower side of the first data, when a value of the first data is not the first maximum value (step 21 and 23), and a second conversion means for converting the first data to the second data so that the data according to a first data prior to or after the first data may be larger than the data of the second bit by adding 0 to the lower side of the first data, when the value of the first data is the first maximum value (step 21, 24 to 26).
JP2000059222A | 2000-02-25 | |||
JP2007221569A | 2007-08-30 | |||
JPH0865106A | 1996-03-08 | |||
JP2000059222A | 2000-02-25 | |||
JP2007221569A | 2007-08-30 |
WO2007069369A1 | 2007-06-21 | |||
WO1999060704A1 | 1999-11-25 | |||
WO2007069369A1 | 2007-06-21 |