The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 30, 2014
Filed:
Nov. 03, 2011
Hemalkumar Chandrkant Doshi, Sunnyvale, CA (US);
Rajkumar Jayaraman, San Jose, CA (US);
Seshendra Gadagottu, Hyderabad, IN;
Narendra Damahe, Bothell, WA (US);
Hemalkumar Chandrkant Doshi, Sunnyvale, CA (US);
Rajkumar Jayaraman, San Jose, CA (US);
Seshendra Gadagottu, Hyderabad, IN;
Narendra Damahe, Bothell, WA (US);
Nvidia Corporation, Santa Clara, CA (US);
Abstract
A USB host for wakeup from a sleep state includes a hold memory, a USB host controller, and a USB driver. When going to sleep, the USB driver sends a suspend command to the USB host controller in response to receiving a sleep command. The USB driver also reads a controller context from the USB host controller and saves the controller context in the hold memory. Thereafter, the USB driver turns off one or more supply potentials and one or more clocks in the host controller, and returns a sleep acknowledgement. While in sleep, the interface pins are placed in a hold state and notification to the operating system are disabled.