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US 8,285,557 B2Granted
Apparatus, system and method for buffering audio data to allow low power states in a processing system during audio playback
AssigneeIntel Corporation
InventorsPradeep Sebestian, Wayne Proefrock
Life of this patent
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Abstract
An audio data stream from a processing system may be buffered to allow low power states in the processing system during audio playback. An audio buffer may be provided external to the processing system and between the processing system and an audio codec. The audio buffer may also shift to an alternate audio data interface mode when the processing system is in the low power state. Of course, many alternatives, variations, and modifications are possible without departing from this embodiment.
Claims20
An apparatus, comprising:
- an audio buffer control operative to control buffering of at least one audio data stream received from an audio controller in a processing system, the buffering occurring external to the processing system;
- and
- an audio codec coupled to the audio buffer, the audio codec operative to receive the at least one buffered audio data stream from a buffer external to the processing system when the processing system is in a low power state and to convert the at least one buffered audio data stream into at least one audio output.
A system, comprising:
- a processing system comprising an audio controller configured to control at least one audio data stream, the processing system comprising a plurality of power states including at least one low power state;
- an audio buffer coupled to the audio controller and external to the processing system, the audio buffer being configured to receive and buffer the at least one audio data stream from the audio controller;
- and
- an audio codec coupled to the audio buffer, the audio codec operative to receive the at least one buffered audio data stream transferred from the audio buffer while the processing system is in the at least one low power state and to convert the buffered audio data stream into at least one audio output.
1 more element
A computer-implemented method, comprising:
- providing at least one audio data stream from an audio controller in a processing system;
- buffering the at least one audio data stream external to the processing system;
- transitioning the processing system to a low power state;
- transferring the at least one buffered audio data stream to an audio codec while the processing system is in the low power state;
- and
- converting the buffered audio data stream into at least one audio output.
3 more elements
Dependencies are inferred from the claim text.