Patent ID: 7581223

Claim:
A method, for use in a device having a first and a second operating systems each controlling a set of resources, at least one of said operating systems being a real-time operating system, said method comprising: forming a function call in the second operating system, said function call comprising information about a resource of the set of resources controlled by the first operating system, transferring said function call to an interface block formed between the operating systems, examining the information included in said function call in said interface block to determine the resource that the function call is related to, forming a service call requesting the resource on the basis of the examination in said interface block, and transferring said service call to the first operating system for starting a resource service in the first operating system, wherein the resource service forms a response, and the method further comprises transferring the response via said interface block to the second operating system, wherein in said interface block, a delayed function call is determined to be executed in the second operating system, and wherein transforming the response to the second operating system comprises transferring the response to the second operating system in the delayed functional call.