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:
Dec. 31, 2013
Filed:
Jun. 30, 2011
Joshua DE Cesare, Campbell, CA (US);
Simon Douglas, Cupertino, CA (US);
Alexei Elias Kosut, Mountain View, CA (US);
Joshua de Cesare, Campbell, CA (US);
Simon Douglas, Cupertino, CA (US);
Alexei Elias Kosut, Mountain View, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
Techniques for intercommunication amongst device drivers are described herein. In one embodiment, an application programming interface (API) is provided by a kernel of an operating system (OS) running within a data processing system. The API is accessible by device drivers associated with multiple devices installed in the system. In response to a request from a first instance of a driver the API, information indicating whether another instance of the same driver is currently started is returned via the API. Other methods and apparatuses are also described.