公开(公告)号：US20200112788A1

公开(公告)日：2020-04-09

申请号：US16500784

申请日：2017-06-12

Applicant: DREAMUS COMPANY

Inventor： Jeong Ho LEE ,  Seung Ho YU ,  Ji Heon AHN ,  Woo Suk KIM

IPC: H04R3/00 ,  H03G3/34 ,  H03F3/185

Abstract: Embodiments provide a device for removing noise of a power source and an apparatus for converting an audio signal, which remove a noise component which comes from a power source terminal of an audio signal converting apparatus stepwise and transfer power to a converting unit and an amplification unit included in the audio signal converting apparatus from a power source terminal to remove power noise.

公开(公告)号：US20220337195A1

公开(公告)日：2022-10-20

申请号：US17685120

申请日：2022-03-02

Applicant: DREAMUS COMPANY

Inventor： Seung Ho YU ,  Ji Heon AHN

IPC: H03F1/02 ,  H03M1/16

Abstract: Disclosed are a hybrid mode based audio processing method and an apparatus therefor. A hybrid mode based audio processing apparatus according to an exemplary embodiment of the present disclosure includes a signal converting unit which converts a digital signal of an input sound source into an analog signal; a mode controller which analyzes the input sound source, sets an amplification mode according to the analysis result, and generates an amplification control signal to control the amplification mode; an amplifying unit which amplifies the analog signal in the amplification mode set based on the amplification control signal; and an audio output unit which outputs an audio corresponding to the amplified analog signal.

公开(公告)号：US20220140839A1

公开(公告)日：2022-05-05

申请号：US17361268

申请日：2021-06-28

Applicant: Dreamus Company

Inventor： Ji Heon AHN ,  Jae Hyuk KIM

IPC: H03M1/66 ,  H03M1/06

Abstract: Disclosed are a sound source output apparatus applying a plurality of DACs and an operating method thereof. The sound source output apparatus according to the exemplary embodiment of the present disclosure includes a sound source acquiring unit which acquires a sound source signal; a tag identification processing unit which identifies tag information about the sound source signal; a DAC selection control unit which selects a specific DAC among a plurality of digital analog converters (DACs) based on a tag identification result of the tag information or a user input signal; and a sound source output unit which outputs a sound source which is converted by the selected specific DAC.

公开(公告)号：US20200153405A1

公开(公告)日：2020-05-14

申请号：US16500796

申请日：2018-03-07

Applicant: DREAMUS COMPANY

Inventor： Jeong Ho LEE ,  Seung Ho YU ,  Ji Heon AHN ,  Woo Suk KIM

IPC: H03G3/34 ,  H04R3/14 ,  H03F3/183 ,  H03M1/66 ,  H05K1/18

Abstract: The embodiments provide an apparatus for converting an audio signal, in which a left channel line and a right channel line connected to an amplification unit of an audio signal converting apparatus are covered with the ground and connected to a chassis of the audio signal converting apparatus, and a digital signal line and an analog signal line are disposed to be spaced apart from a substrate to improve crosstalk and remove noise.

公开(公告)号：US20200036355A1

公开(公告)日：2020-01-30

申请号：US16603163

申请日：2017-06-02

Applicant: DREAMUS COMPANY

Inventor： Jeong Ho LEE ,  Seung Ho YU ,  Ji Heon AHN ,  Woo Suk KIM

IPC: H03G3/34 ,  G06F3/16 ,  H04R3/00 ,  H03G3/30

Abstract: The present invention proposes an audio signal muting apparatus setting and adjusting a time for removing pop noise and muting an audio signal based on the set and adjusted timing. Further, the present invention proposes a digital signal converting apparatus for muting an analog audio signal based on a timing for removing pop noise when converting a digital audio signal into an analog audio signal in connection with an audio signal reproducing apparatus.