Intel Corporation

Pradeep Sebestian

Paul S Diefenbaugh

Wayne Proefrock

Jeremy J Lees

Ulf Hanebutte

Brent D Chartrand

Richard A Forand

Ram V Chary

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.

Apparatus, system and method for buffering audio data to allow low power states in a processing system during audio playback

A method which includes initializing a device following a power cycle. The initialization includes an agent for the device implementing one or more command sequences to configure the device for operation on a computing platform. The one or more implemented command sequences are recorded and a configuration flag is asserted to indicate the device has been configured for operation on the computing platform. The configuration flag is included in a command configuration register. At least a portion of the recorded one or more command sequences and the command configuration register are stored in a persistent memory that includes non-volatile memory resident on the device. Based on an other power cycle, the device is to access the command configuration register. Based on the command configuration register, the device is to determine whether it is to configure itself by implementing the one or more stored command sequences. The device then configures itself based on that determination. Other implementations and examples are described in this disclosure.

Configuring a device for operation on a computing platform

A new audio playback architecture may be used, which allows the use of much larger buffering than that used by a typical audio subsystem in a computing system to improve power efficiency of the system and at the same time allows to maintain the quality (e.g., fidelity and responsiveness) of the audio playback. The audio controller in the new architecture may be made to report back to the host system a more accurate indication of which audio frame is being set to the audio codec than a currently available audio controller does. Additionally, the controller is capable of re-fetching previously buffered (but not yet transmitted) data. Furthermore, buffers in both the audio controller and the main memory may be dynamically adjusted during playback of audio data and/or for different applications.

Method and apparatus for maintaining synchronization of audio in a computing system

A new audio playback architecture may be used, which allows the use of much larger buffering than that used by a typical audio subsystem in a computing system to improve power efficiency of the system and at the same time allows to maintain the quality (e.g., fidelity and responsiveness) of the audio playback. The audio controller in the new architecture may be made to report back to the host system a more accurate indication of which audio frame is being set to the audio codec than a currently available audio controller does. Additionally, the controller is capable of re-fetching previously buffered (but not yet transmitted) data. Furthermore, the controller may dynamically adjust the size of its local buffer.

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Beaverton, OR, United States of America

Pradeep Sebestian