Qualcomm Incorporated

Hemant Kumar

Ameya Kulkarni

Andrew Cheung

Gilbert Christopher Sih

Way-Shing Lee

Jay Yu Jae Choi

Daniel Hyongkyu Kim

Amit Gupta

Vamsi Krishna Samavedam

Systems and methods for using distributed Universal Serial Bus (USB) host drivers are disclosed. In one aspect, USB packet processing that was historically done on an application processor is moved to a distributed USB driver running in parallel on a low-power processor such as a digital signal processor (DSP). While a DSP is particularly contemplated, other processors may also be used. Further, a communication path is provided from the low-power processor to USB hardware that bypasses the application processor. Bypassing the application processor in this fashion allows the application processor to remain in a sleep mode for longer periods of time instead of processing digital data received from the low-power processor or the USB hardware. Further, by bypassing the application processor, latency is reduced, which improves the user experience.

Controlling data streams in universal serial bus (USB) systems

Systems and methods for using distributed Universal Serial Bus (USB) host drivers are disclosed. In one aspect, USB packet processing that was historically done on an application processor is moved to a distributed USB driver running in parallel on a low-power processor such as a digital signal processor (DSP). While a DSP is particularly contemplated, other processors may also be used. Further, a communication path is provided from the low-power processor to USB hardware that bypasses the application processor. Bypassing the application processor in this fashion allows the application processor to remain in a sleep mode for longer periods of time instead of processing digital data received from the low-power processor or the USB hardware. Further, by bypassing the application processor, latency is reduced, which improves the listener experience.

Systems and methods for using distributed universal serial bus (USB) host drivers

The invention is a digital signal processor architecture that is designed to speed up frequently-used signal processing computations, such as FIR filters, correlations, FFTs, and DFTs. The architecture uses a coupled dual-MAC architecture (MAC ), (MAC ) and attaches a dual-MAC coprocessor (MAC ), (MAC ) onto it in a unique way to achieve a significant increase in processing capability.

DSP with dual-mac processor and dual-mac coprocessor

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San Diego, CA, United States of America

Hemant Kumar