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:
Apr. 11, 2017
Filed:
Dec. 20, 2006
John Berendsen, Beaconsfield, CA;
Robert Chapman, Mountian View, CA (US);
John Berendsen, Beaconsfield, CA;
Robert Chapman, Mountian View, CA (US);
NVIDIA Corporation, Santa Clara, CA (US);
Abstract
Circuits, methods, and apparatus that reduce the power consumed by data transfers initiated by a USB host controller. Peripheral devices on a USB network are accessed with a reduced frequency in order to save power dissipated by a CPU and other circuits when reading data needed by the host controller. Instead of possibly accessing devices each frame, peripheral devices are accessed during some frames, and not accessed during others. A USB host controller may have two or more modes, such as a low power mode and a regular mode. In the low power mode, USB devices are accessed during fewer than all frames, in the regular mode, USB devices are possibly accessed each frame. Mode selection may depend on whether battery power is used.