Invention Grant
- Patent Title: Controlling data streams in universal serial bus (USB) systems
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Application No.: US15900881Application Date: 2018-02-21
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Publication No.: US10678494B2Publication Date: 2020-06-09
- Inventor: Amit Gupta , Andrew Cheung , Ameya Kulkarni , Hemant Kumar
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: Qualcomm Incorporated
- Current Assignee: Qualcomm Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Withrow & Terranova, PLLC
- Main IPC: G06F13/38
- IPC: G06F13/38 ; G06F3/16

Abstract:
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.
Public/Granted literature
- US20180181364A1 SYSTEMS AND METHODS FOR USING DISTRIBUTED UNIVERSAL SERIAL BUS (USB) HOST DRIVERS Public/Granted day:2018-06-28
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