Digital amplifier

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8917139
APP PUB NO 20130021096A1
SERIAL NO

13583447

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Abstract

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A digital amplifier comprises: a switching unit that amplifies a signal input to the digital amplifier by performing a switching operation; a driving unit that turns the switching unit on and off; an input signal detection unit that detects an input signal to the digital amplifier; and a first control unit that performs control such that the switching unit starts a switching operation by starting driving of the driving unit, when the digital amplifier is changed to a signal input state and the input signal detection unit detects an input signal, and performs control such that the switching unit stops the switching operation by stopping the driving of the driving unit, when the digital amplifier is changed to a no signal input state and the input signal detection unit does not detect an input signal. This configuration enables to reduce power consumption when no signal is input.

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Patent Owner(s)

  • PANASONIC CORPORATION;ROLAND CORPORATION

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  • 2011 Application Filing Year
  • H03F Class
  • 880 Applications Filed
  • 635 Patents Issued To-Date
  • 72.16 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances2011201220132014201520162017201820190255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Maeda, Yoshiki Shizuoka, JP 34 283
Niwayama, Shigeki Shizuoka, JP 2 15
Sasaki, Hisayuki Fukuoka, JP 7 81
Sugawara, Hiroshi Fukuoka, JP 118 1393
Takano, Toshimi Shizuoka, JP 2 15

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Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges19285902221176111101 - 1011 - 2021 - 3031 - 4041 - 5051 - 6071 - 8081 - 9091 - 100100 +020406080100120140160180200220240260280300

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