Quaternary/ternary modulation selecting circuit and associated method
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United States of America Patent
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May 23, 2017
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N/A
app pub date -
Jan 4, 2016
filing date -
Jan 4, 2016
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Abstract
A quaternary/ternary modulation selecting circuit of an audio amplifier includes a quaternary signal generating circuit, for receiving complementary analog input signals to generate complementary quaternary signals; and a ternary signal generating circuit for generating a ternary signal according to the complementary quaternary signals, wherein the ternary signal includes a positive ternary wave and a negative ternary wave; wherein when a difference in amplitude between the complementary analog input signals is within a predetermined range of zero amplitude, a signal pattern of the positive ternary wave generated from the ternary signal generating circuit is identical to a signal pattern of the negative ternary wave generated from the ternary signal generating circuit.
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