A/d conversion apparatus, a/d conversion method, and communication apparatus
AssigneeKabushiki Kaisha Toshiba
InventorsMasanori Furuta, Tomohiko Ito, Tetsuro Itakura
Life of this patent
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Abstract
An A/D conversion apparatus includes: a first and a second D/A converter to sample an analog signal and successively compare the analog signal and a reference signal to generate a first and a second comparison signal respectively; a first comparator to compare the first comparison signal generated by the first D/A converter with a benchmark signal; a second comparator to compare the second comparison signal generated by the second D/A converter with the benchmark signal; and a converter to convert the analog signal to a digital signal according to results of the comparisons by the first and second comparators.
Claims9
An A/D conversion apparatus, comprising:
- a first and a second D/A converter to sample an analog signal and successively compare the analog signal and a reference signal to generate a first and a second comparison signal respectively;
- a first comparator to compare the first comparison signal generated by the first D/A converter with a benchmark signal;
- a second comparator to compare the second comparison signal generated by the second D/A converter with the benchmark signal;
- and
- a first converter to convert the analog signal to a digital signal according to results of the comparisons by the first and second comparators.
An A/D conversion method, comprising:
- sampling an analog signal;
- successively comparing the analog signal and a reference signal to generate a first and a second comparison signal;
- comparing the first comparison signal generated by a first D/A converting unit with a benchmark value;
- comparing the second comparison signal generated by a second D/A converting unit with the benchmark value;
- and
- converting the analog signal to a digital signal according to results of the comparisons.
A communication apparatus, comprising:
- a receiver to receive an analog signal;
- a first and a second D/A converter successively to compare the analog signal and a reference signal to generate a first and a second comparison signal respectively;
- a first comparator to compare the first comparison signal generated by the first D/A converter with a benchmark value;
- a second comparator to compare the second comparison signal generated by the second D/A converter with the benchmark value;
- a converter to convert analog signal to a digital signal according to results of the comparisons by the first and second comparators;
- and
- a signal processor to demodulate the digital signal.
Dependencies are inferred from the claim text.