System and method for negotiating control of a shared audio or visual resource

• US 9,794,134 B2
• Filed: 05/06/2013
• Issued: 10/17/2017
• Est. Priority Date: 11/16/2012
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Apple Inc.
• Inventors: Rostaing, Andrew E., Lee, Eric S., Chapman, Gregory R.
• Primary Examiner(s): Tsai, Henry
• Assistant Examiner(s): Bartels, Christopher
• Application Number:
  US13/888,232
• Publication Number:
  US 20140143424A1
• Time in Patent Office: 1,625 Days
• Field of Search: None
• CPC Class Codes: G06F 9/52 Program synchronisation; Mutual exclusion, e.g. by means of semaphores
• CPC Class Codes: H04L 41/24 using dedicated network management hardware

Abstract

Systems and methods for negotiating control of a shared audio or visual resource are disclosed. A request for control of a shared audio or visual resource is received at an arbiter. The arbiter maintains existing state information for ownership of the shared audio or visual resource and ownership transition conditions of the shared audio or visual resource. The request is received from one of a process executing on an embedded system and a process executing on a mobile computing device. New state information regarding ownership of the shared audio or visual resource is determined based at least in part on the request for control and the ownership transition conditions. The new state information indicates which of the processes controls output of the shared audio or visual resource.

Claims

1. A method for negotiating control of a shared audio or visual resource of an automobile, the method comprising:

receiving at an arbiter a request for control of a shared audio or visual resource of a vehicle, wherein

the arbiter maintains

existing state information for ownership of the shared audio or visual resource and

ownership transition conditions of the shared audio or visual resource, and

the request for control of the shared audio or visual resource of the vehicle is received from one of a plurality of processes comprising

a process executing on an embedded system of the vehicle and

a process executing on a mobile computing device temporarily communicating with the vehicle, wherein

the ownership transition conditions are configured such that only one of the plurality of processes can claim ownership of the shared audio or visual resource at any given point in time;

determining new state information regarding ownership of the shared audio or visual resource, wherein

the determining the new state information comprises determining the new state information based at least in part on

the request for control and

the ownership transition conditions, and

the new state information indicates which of the processes controls output of the shared audio or visual resource of the vehicle; and

communicating to a controller interface of the shared audio or visual resource the new state information.

2. The method of claim 1, wherein

the determining new state information regarding ownership of the shared audio or visual resource further comprises

determining new state information regarding ownership of the shared audio or visual resource without regard to whether the request for control of the shared audio or visual resource of the vehicle originated from the process executing on an embedded system attached to the vehicle or a process executing on a mobile computing device temporarily communicating with the vehicle.

3. The method of claim 1, wherein the arbiter is a process executing on the vehicle.

4. The method of claim 1, further comprising

receiving at the arbiter a request for control of another shared audio or visual resource of the vehicle;

and

determining new state information regarding ownership of the another shared audio or visual resource of the vehicle based on the request for control of the another of the shared audio or visual resource of the vehicle, wherein

the new state information regarding ownership of the another shared audio or visual resource of the vehicle indicates which of the processes controls output of the another shared audio or visual resource of the vehicle, and

the new state information regarding ownership of the another shared audio or visual resource of the vehicle is determined independent of the new state information regarding ownership of the shared audio or visual resource.

5. The method of claim 4, wherein

the one of the shared audio or visual resource of the vehicle is a video display, and

the another of the shared audio or visual resource of the vehicle is an audio channel.

6. The method of claim 4, wherein

the one of the shared audio or visual resource of the vehicle is an output channel, and

the another of the shared audio or visual resource of the vehicle is an input/output channel.

7. The method of claim 1, wherein

the determining new state information regarding ownership of the shared audio or visual resource further comprises determining new state information regarding ownership of the shared audio or visual resource such that

a first one of the processes owns control of the one of the shared audio or visual resource of the vehicle, and

a second one of the processes is designated to control output of the one of the shared audio or visual resource for the duration of a task and returns control of the one of the shared audio or visual resource of the vehicle to control output of the one of the shared audio or visual resource after completion of the task.

8. The method of claim 1, further comprising,

configuring a control channel for communicating between the shared audio or visual resource, the arbiter, and the mobile computing device, wherein the arbiter is a process executing on the embedded system attached to the vehicle.

9. A multifunction device, comprising:

one or more processors; and

one or more memories storing an arbiter that is executable on the one or more processors to perform;

receiving at the arbiter a request from one of a plurality of processes for control of a shared audio or visual resource of the vehicle, wherein the arbiter maintains

existing state information for ownership of the shared audio or visual resource and

ownership transition conditions of the shared audio or visual resource, wherein the ownership transition conditions are configured such that only one of the plurality of processes can claim ownership of the shared audio or visual resource at any given point in time;

determining new state information regarding ownership of the shared audio or visual resource, wherein

the determining the new state information comprises determining the new state information based at least in part on the request for control and the ownership transition conditions,

the new state information indicates which of the processes controls output of the shared audio or visual resource of the vehicle;

determining new ownership transition conditions of the shared audio or visual resource; and

communicating to a controller interface of the shared audio or visual resource the new state information.

10. The multifunction device of claim 9, wherein

the determining new state information regarding ownership of the shared audio or visual resource further comprises

determining new state information regarding ownership of the shared audio or visual resource without regard to whether the request for control of the shared audio or visual resource of the vehicle originated from the process executing on an embedded system attached to the vehicle or a process executing on a mobile computing device temporarily communicating with the vehicle.

11. The multifunction device of claim 9, wherein

the plurality of processes comprises:

a process executing on an embedded system attached to the vehicle and

a process executing on the multifunction device.

12. The multifunction device of claim 9, further comprising

receiving at the arbiter a request for control of another shared audio or visual resource of the vehicle;

and

determining new state information regarding ownership of the another shared audio or visual resource of the vehicle based on the request for control of the another of the shared audio or visual resource of the vehicle, wherein

the new state information regarding ownership of the another shared audio or visual resource of the vehicle indicates which of the processes controls output of the another shared audio or visual resource of the vehicle, and

the new state information regarding ownership of the another shared audio or visual resource of the vehicle is determined independent of the new state information regarding ownership of the shared audio or visual resource.

13. The method of claim 12, wherein

the one of the shared audio or visual resource of the vehicle is a video display, and

the another of the shared audio or visual resource of the vehicle is an audio channel.

14. The multifunction device of claim 12, wherein

the one of the shared audio or visual resource of the vehicle is an output channel, and

the another of the shared audio or visual resource of the vehicle is an input/output channel.

15. The multifunction device of claim 9, wherein

the determining new state information regarding ownership of the shared audio or visual resource further comprises determining new state information regarding ownership of the shared audio or visual resource such that

a first one of the processes owns control of the one of the shared audio or visual resource of the vehicle, and

a second one of the processes is designated to control output of the one of the shared audio or visual resource for the duration of a task and returns control of the one of the shared audio or visual resource of the vehicle to control output of the one of the shared audio or visual resource after completion of the task.

16. A non-transitory, computer-readable storage medium, storing program instructions executable on a computer to implement:

receiving at an arbiter a request from one of a plurality of processes for control of a shared audio or visual resource of the vehicle, wherein

the arbiter maintains

existing state information for ownership of the shared audio or visual resource and

ownership transition conditions of the shared audio or visual resource, wherein the ownership transition conditions are configured such that only one of the plurality of processes can claim ownership of the shared audio or visual resource at any given point in time, and

the plurality of processes comprises;

a process executing on an embedded system attached to the vehicle and

a process executing on a mobile computing device temporarily communicating with the vehicle;

determining new state information regarding ownership of the shared audio or visual resource, wherein

the program instructions executable on the computer to implement determining the new state information comprise program instructions executable on the computer to implement determining the new state information based at least in part on

the request for control and

the ownership transition conditions,

the new state information indicates which of the processes controls output of the shared audio or visual resource of the vehicle;

determining new ownership transition conditions of the shared audio or visual resource; and

communicating to a controller interface of the shared audio or visual resource the new state information.

17. The non-transitory, computer-readable storage medium of claim 16, wherein

the program instructions executable on the computer to implement the determining new state information regarding ownership of the shared audio or visual resource further comprise program instructions executable on the computer to implement

determining new state information regarding ownership of the shared audio or visual resource without regard to whether the request for control of the shared audio or visual resource of the vehicle originated from the process executing on an embedded system attached to the vehicle or a process executing on a mobile computing device temporarily communicating with the vehicle.

18. The non-transitory, computer-readable storage medium of claim 16, wherein the arbiter is a process executing on the mobile computing device.

19. The non-transitory, computer-readable storage medium of claim 16, further comprising program instructions executable on the computer to implement

receiving at the arbiter a request for control of another shared audio or visual resource of the vehicle;

and

determining new state information regarding ownership of the another shared audio or visual resource of the vehicle based on the request for control of the another of the shared audio or visual resource of the vehicle, wherein

the new state information regarding ownership of the another shared audio or visual resource of the vehicle indicates which of the processes controls output of the another shared audio or visual resource of the vehicle, and

the new state information regarding ownership of the another shared audio or visual resource of the vehicle is determined independent of the new state information regarding ownership of the shared audio or visual resource.

20. The non-transitory, computer-readable storage medium of claim 16, wherein

the one of the shared audio or visual resource of the vehicle is a video display, and

the another of the shared audio or visual resource of the vehicle is an audio channel.

21. A method for negotiating control of a shared resource, the method comprising:

receiving at an arbiter a request from one of a plurality of processes for control of a shared resource, wherein

the arbiter maintains

existing state information for ownership of the shared resource and

ownership transition conditions of the shared resource, wherein the ownership transition conditions are configured such that only one of the plurality of processes can claim ownership of the shared resource at any given point in time, and

the plurality of processes comprises;

a process executing on an embedded system attached to the shared resource and

a process executing on a device temporarily communicating with the embedded system;

determining new state information regarding ownership of the shared resource, wherein

the determining the new state information comprises determining the new state information based at least in part on the request for control and the ownership transition conditions,

the new state information indicates which of the processes controls output of the shared resource.

22. The method of claim 21, wherein

the determining new state information regarding ownership of the shared resource further comprises

determining new state information regarding ownership of the shared resource without regard to whether the request for control of the shared resource of the vehicle originated from the process executing on an embedded system or a process executing on a mobile computing device.

23. The method of claim 21, wherein the arbiter is a process executing on the mobile computing device.

24. The method of claim 21, wherein the shared resource is an audio or visual resource of a vehicle.

25. The method of claim 21, wherein the shared resource is an audio or visual resource of a home entertainment system.

26. The method of claim 21, wherein the shared resource is an audio or visual resource of a home automation control system.