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DITHER SYNTHESIZING DEVICE AND DITHER SYNTHESIZING METHOD
DITHER SYNTHESIZING DEVICE AND DITHER SYNTHESIZING METHOD
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机译：狄特合成装置及狄特合成方法
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摘要
PROBLEM TO BE SOLVED: To generate an analog signal the level of which is too minute to be expressed by the number of bits of execution data of a DAC, and to output a wide variety of analog values which the number of bits to be a processing object cannot express.;SOLUTION: In a dither synthesizing method: a signal of digital data with a plurality of bits is input; a bit pattern of a part which is not to be processed by a DAC from the input digital data is extracted; a ratio for dither on the basis of the extracted bit pattern is calculated; a clock signal having a higher frequency than that of the input digital data signal is generated; a signal, which has the frequency of the clock signal or a constant multiplied frequency of the frequency of the clock signal, and has either a value of the bit pattern of a part that is to be the processed by the DAC in the input digital data or a value obtained by adding one to the former value, and in which a ratio of a value obtained by adding one to the value of the bit pattern of the part that is to be processed by the DAC is the ratio for dither, is generated; and the generated signal is output.;COPYRIGHT: (C)2013,JPO&INPIT
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