Invention Grant
US08447046B2 Circuit with three-stage of power-on sequence used for suppressing the pop noise in audio system
有权
具有三级上电序列的电路用于抑制音频系统中的流行噪声
- Patent Title: Circuit with three-stage of power-on sequence used for suppressing the pop noise in audio system
- Patent Title (中): 具有三级上电序列的电路用于抑制音频系统中的流行噪声
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Application No.: US13005609Application Date: 2011-01-13
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Publication No.: US08447046B2Publication Date: 2013-05-21
- Inventor: Hsin-Chieh Huang , Yi-Lung Chen
- Applicant: Hsin-Chieh Huang , Yi-Lung Chen
- Applicant Address: TW Hsinchu
- Assignee: ISSC Technologies Corp.
- Current Assignee: ISSC Technologies Corp.
- Current Assignee Address: TW Hsinchu
- Agency: Sinorica, LLC
- Agent Ming Chow
- Main IPC: H04B15/00
- IPC: H04B15/00
Abstract:
The present invention discloses a circuit with three-stage of power-on sequence used for suppressing the pop noise in audio system. It mainly comprises a first resistor (R1); a capacitor (Cout); a first switch (SW1); a second switch (SW2); a soft start device; a first feedback amplifier; and a second feedback amplifier. By using the three-stage of power-on sequence, the present invention can effectively suppress the pop noise when the audio driver is power on.
Public/Granted literature
- US20120183155A1 CIRCUIT WITH THREE-STAGE OF POWER-ON SEQUENCE USED FOR SUPPRESSING THE POP NOISE IN AUDIO SYSTEM Public/Granted day:2012-07-19
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