Attenuator, data signal processor, method for acquiring attenuation of attenuator, recording medium, and computer data signal
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United States of America Patent
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N/A
Issued Date -
Dec 22, 2005
app pub date -
Jun 15, 2005
filing date -
Jun 17, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An address generator is supplied with a designated gain GT, and generates exponent data n and an address of mantissa A. The address of mantissa A is set based on an accuracy of the designated gain GT. A mantissa-coefficient acquiring unit is so structured as to acquire a mantissa-coefficient k based on an equation acquired in accordance with a relationship between the exponent data n and mantissa data for each address of mantissa A. A coefficient data acquiring section and a mantissa data acquiring section both included in the mantissa-coefficient acquiring unit generate a coefficient a and mantissa data d1, respectively, based on the address of mantissa A, whereby the mantissa-coefficient k can be acquired for the exponent data n with a high accuracy for each address of mantissa A.
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