专利名称：High efficiency power amplifying apparatus发明人：Katsuhiko Higashiyama,Tsuyoshi Sato申请号：US09/282355申请日：19990331公开号：US06091292A公开日：20000718
摘要：A parallel, synchronously driven linear power amplifier (6) and class D poweramplifier (2) form an equivalent active filter, minimizing the scale of the passive filter (3),and effectively suppressing high frequency noise. First to third muting circuits (17-19) areused when the power supply is turned on and off to interrupt signal supply from thesignal input terminal, and control operation of the class D power amplifier (2) and linearvoltage amplifier (15), thereby preventing extraneous irritating noises such as poppingsounds from a loudspeaker.
申请人：MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
代理机构：Greenblum & Bernstein, PC.
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