Audio signal modulation and amplification circuit

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12255589
APP PUB NO 20230198482A1
SERIAL NO

17877444

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Importance

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Abstract

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An audio signal modulation and amplification circuit includes a common-mode electric potential controller, a carrier generator, and channel circuits. The common-mode electric potential controller is configured to generate one or more first common-mode electric potentials and second common-mode electric potentials. The carrier generator is adapted to receive the first common-mode electric potential to generate a carrier signal. Each of the channel circuits includes a filter, a comparison circuit, and a driving circuit. The filter is adapted to filter an input signal and generate a filtered signal based on a corresponding one of the second common-mode electric potentials. The comparison circuit is configured to compare the potential of the carrier signal with the potential of the filtered signal to generate a pulse-width modulation signal. The driving circuit is configured to be turned on or off in response to the pulse-width modulation signal to output a load driving signal.

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Patent Owner(s)

  • REALTEK SEMICONDUCTOR CORP.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chuang, Chia-I Hsinchu, TW 2 0
Lee, Yu-An Hsinchu, TW 2 1
Lin, Che-Hung Hsinchu, TW 35 88

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