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:
May. 12, 2020
Filed:
Nov. 19, 2018
Applicant:
Apple Inc., Cupertino, CA (US);
Inventors:
Derek R. Kumar, Sunnyvale, CA (US);
Joshua Phillips de Cesare, Campbell, CA (US);
Assignee:
Apple Inc., Cupertino, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 13/24 (2006.01); G06F 1/3293 (2019.01); G06F 9/4401 (2018.01);
U.S. Cl.
CPC ...
G06F 13/24 (2013.01); G06F 1/3293 (2013.01); G06F 9/4418 (2013.01); Y02D 10/14 (2018.01);
Abstract
A data processing system includes, in one embodiment, at least a first processor and a second processor and an interrupt controller, and the system provides a deferred inter-processor interrupt (IPI) that can be used to wake up the second processor from a low power sleep state. The deferred IPI is, in one embodiment, delayed by a timer in the interrupt controller, and the deferred IPI can be cancelled by the first processor if the first processor becomes available to execute a thread that was made runnable by an interrupt which triggered the deferred IPI.