Electrical computers and digital processing systems: interprogra – Device driver communication
Reexamination Certificate
2011-07-12
2011-07-12
Ho, Andy (Department: 2194)
Electrical computers and digital processing systems: interprogra
Device driver communication
C719S322000, C719S323000, C719S324000, C719S327000, C710S010000
Reexamination Certificate
active
07979868
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 via 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.
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de Cesare Joshua
Douglas Simon
Kosut Alexei Elias
Apple Inc.
Blakely , Sokoloff, Taylor & Zafman LLP
Ho Andy
Kraft Shih-Wei
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