公开(公告)号：US20220078550A1

公开(公告)日：2022-03-10

申请号：US17210439

申请日：2021-03-23

Applicant: Realtek Semiconductor Corp.

Inventor： Chao-Min Lai ,  Guo-Yuan Luo ,  Chia-Hao Wu

IPC: H04R3/02

Abstract: An audio receiver includes a first signal port, a second signal port, a power supply port, a power ground port, and an amplifier circuit. The first signal port is coupled to an audio signal line of a transmission interface. The second signal port is coupled to an audio ground line of the transmission interface. The power supply port is coupled to a power supply line of the transmission interface to generate a power supply level to the power supply line. The power ground port is connected to the ground level and to a power ground line of the transmission interface. When the audio receiver is outputting a power supply current to the audio source device through the power supply port via the power supply line, a connection state between the second signal port and the power ground port is at a high impedance state.

公开(公告)号：US20200334191A1

公开(公告)日：2020-10-22

申请号：US16744191

申请日：2020-01-16

Applicant: Realtek Semiconductor Corp.

Inventor： Chao-Min Lai ,  Chia-Hao Wu ,  Yan-Jyun Chen ,  Guo-Yuan Luo

IPC: G06F13/42 ,  H04N21/4363 ,  H04B1/40 ,  H04L12/40

Abstract: A method for processing a multi-media signal and an associated multi-media device are provided. The method includes: receiving a first audio signal within the multi-media signal from a display device through a first transmission interface of a multi-media device; converting the first audio signal into a second audio signal applicable to a second transmission interface of the multi-media device; and outputting the second audio signal to an audio device through the second transmission interface for playback.

公开(公告)号：US11381912B2

公开(公告)日：2022-07-05

申请号：US17210439

申请日：2021-03-23

Applicant: Realtek Semiconductor Corp.

Inventor： Chao-Min Lai ,  Guo-Yuan Luo ,  Chia-Hao Wu

IPC: H04R3/00 ,  G06F3/16 ,  H04R3/02

Abstract: An audio receiver includes a first signal port, a second signal port, a power supply port, a power ground port, and an amplifier circuit. The first signal port is coupled to an audio signal line of a transmission interface. The second signal port is coupled to an audio ground line of the transmission interface. The power supply port is coupled to a power supply line of the transmission interface to generate a power supply level to the power supply line. The power ground port is connected to the ground level and to a power ground line of the transmission interface. When the audio receiver is outputting a power supply current to the audio source device through the power supply port via the power supply line, a connection state between the second signal port and the power ground port is at a high impedance state.