Marvell International Limited

Intel Corporation

Qinwei Gu

Yu Bai

Xinyue Tang

Embodiments of the present invention provide a method that comprises, within a sample window, determining an active time of a central processing unit (CPU) at an operating frequency. If there are any different operating frequencies within the sample window, the method further comprises determining active times of the CPU at the different operating frequencies within the sample window and, based upon the active times for the operating frequencies within the sample window, calculating a millions of instructions per second (MIPS) value for the sample window. The method further comprises performing a comparison of the MIPS value to a threshold value and, based upon the comparison of the MIPS value to the threshold value, setting an operating frequency of the CPU for a next sample window.

Method and apparatus for selecting an operating frequency of a central processing unit, based on determining a millions of instruction per second (MIPS) value associated with the central processing unit

Systems, methods, and other embodiments associated with a low power audio codec are described. According to one embodiment, an audio codec includes an audio buffer configured to store decoded audio data received from an application processor external to the audio codec. The application processor is configured to decode audio data in a RUN mode. The audio codec is configured to store, in the audio buffer, decoded audio data received from the application processor when the application processor is in IDLE mode and provide the stored decoded audio data to an audio device while the application processor is in a low power mode.

Audio codec with audio buffer to store decoded audio data wherein decoding processor enters low power mode during playback

Systems, methods, and other embodiments associated with a low power audio codec are described. According to one embodiment, an apparatus includes an audio codec having an audio buffer configured to store decoded audio data received from a processor. The audio codec is configured to provide the stored decoded audio data to an audio device while decoded audio data is not being received from the processor. According to another embodiment, a method includes receiving a request for decoded audio data from an audio codec with an audio buffer, entering a RUN mode and providing decoded audio data stored in processor memory to the audio codec for storage in the audio buffer. After receiving a buffer full signal from the audio codec the method includes entering a low power mode while the audio codec provides an audio signal to an audio device.

Low power audio codec

Millions of instruction per second (MIPS) based idle profiler in a power management framework

Embodiments of techniques for simultaneously connecting a plurality of expansion cards to a single bus of a host controller are described.

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Shanghai, China

Qinwei Gu