Invention Grant
US07254244B2 Pop and click reduction using DAC power up and power down processing
有权
使用DAC上电和断电处理进行流行和点击减少
- Patent Title: Pop and click reduction using DAC power up and power down processing
- Patent Title (中): 使用DAC上电和断电处理进行流行和点击减少
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Application No.: US10628827Application Date: 2003-07-28
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Publication No.: US07254244B2Publication Date: 2007-08-07
- Inventor: Matthew Brady Henson , Matthew D. Felder
- Applicant: Matthew Brady Henson , Matthew D. Felder
- Applicant Address: US TX Austin
- Assignee: Sigmatel, Inc.
- Current Assignee: Sigmatel, Inc.
- Current Assignee Address: US TX Austin
- Agency: Garlick Harrison & Markison
- Agent Timothy W. Markison; Bruce E. Stuckman
- Main IPC: H03F21/00
- IPC: H03F21/00 ; H03F1/14 ; H03F1/26 ; H04B15/00 ; H03G3/10
Abstract:
An audio amplifier generates an output to a load, in which a digital-to-analog converter drives the amplifier during powering up and powering down the amplifier. The digital-to-analog converter controls the amplifier to ramp the voltage at the output at a predetermined rate to reduce rapid voltage changes from being sent to the load during the powering up or powering down sequence.
Public/Granted literature
- US20050025322A1 Pop and click reduction using DAC power up and power down processing Public/Granted day:2005-02-03
Information query
