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. 14, 2004
Filed:
Nov. 26, 2001
Xia Dai, San Jose, CA (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
In accordance with an embodiment of the present invention, a triggering event is initiated to place a processor in a low power state. The voltage from a first voltage regulator supplied to a core of the processor may be lowered to a level at which the processor core becomes non-operational and the processor state is lost. The processor may include a memory region in which the processor state may be stored upon entering the low power state. This memory region may be powered by a second voltage regulator so that its contents are not lost while in the low power state. For one embodiment of the present invention, the processor may additionally include a snoop controller powered by the second voltage regulator. This snoop controller may snoop a cache, which may also be powered by the second voltage regulator, while the processor is in the low power state. The snoop controller may additionally monitor interrupts.