Invention Grant
- Patent Title: Switchable secondary playback path
- Patent Title (中): 可切换次要播放路径
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Application No.: US14680830Application Date: 2015-04-07
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Publication No.: US09306588B2Publication Date: 2016-04-05
- Inventor: Tejasvi Das , John L. Melanson , John C. Tucker , Xiaofan Fei
- Applicant: Cirrus Logic, Inc.
- Applicant Address: US TX Austin
- Assignee: Cirrus Logic, Inc.
- Current Assignee: Cirrus Logic, Inc.
- Current Assignee Address: US TX Austin
- Agency: Jackson Walker L.L.P.
- Main IPC: H03M1/66
- IPC: H03M1/66 ; H03M1/00 ; H03M1/08 ; H03M1/78 ; H03M1/70 ; H03M1/68

Abstract:
In accordance with embodiments of the present disclosure, a processing system may include a plurality of processing paths including a first processing path and a second processing path, a digital-to-analog stage output, and a controller. The first processing path may include a first digital-to-analog converter for converting the digital input signal into a first intermediate analog signal, the first digital-to-analog converter configured to operate in a high-power state and a low-power state. The second processing path may include a second digital-to-analog converter for converting a digital input signal into a second intermediate analog signal. The digital-to-analog stage output may be configured to generate an analog signal comprising a sum of the first intermediate analog signal and the second intermediate analog signal. The controller may be configured to operate the first digital-to-analog converter in the lower-power state when a magnitude of the digital input signal is below a threshold magnitude.
Public/Granted literature
- US20150295584A1 SWITCHABLE SECONDARY PLAYBACK PATH Public/Granted day:2015-10-15
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