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. 15, 2015
Filed:
Jan. 27, 2012
Matthew Raymond Longnecker, San Jose, CA (US);
Scott Alan Williams, San Jose, CA (US);
Sagheer Ahmad, Cupertino, CA (US);
Robert Alan Bignell, San Jose, CA (US);
Venkata Krishna Reddy Dumpa, Santa Clara, CA (US);
Matthew Raymond Longnecker, San Jose, CA (US);
Scott Alan Williams, San Jose, CA (US);
Sagheer Ahmad, Cupertino, CA (US);
Robert Alan Bignell, San Jose, CA (US);
Venkata Krishna Reddy Dumpa, Santa Clara, CA (US);
NVIDIA CORPORATION, Santa Clara, CA (US);
Abstract
To preserve power and increase the overall efficiency of the CPU, the platform idle driver causes the power gate controller to cut power to the idle core. Such power gating is autonomous, i.e., the operating system and the other cores are not involved. In operation, the platform idle driver first prepares the core and the power gate controller for power gating the core. The platform idle driver then triggers the power gating. The power gate controller monitors interrupts released by the interrupt controller, and if any on the released interrupts are associated with the power gated core, the power gate controller resumes dispersing power to the core.