VEHICLE WITH MULTIPLE USER INTERFACE OPERATING DOMAINS

• US 20160328272A1
• Filed: 12/31/2014
• Published: 11/10/2016
• Est. Priority Date: 01/06/2014
• Status: Abandoned Application

• Current Assignee: Visteon Global Technologies Incorporated (Visteon Corporation)
• Original Assignee: Johnson Controls Technology Company (Johnson Controls International plc)
• Inventors: AHMED, Waheed, WIETZKE, Joachim, PABST, Markus
• Application Number:
  US15/109,801
• Publication Number:
  US 20160328272A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 9/451 Execution arrangements for user interfaces
• CPC Class Codes: G06F 9/4881 Scheduling strategies for dispatcher, e.g. round robin, multi-level priority queues
• CPC Class Codes: G06F 9/5038 considering the execution order of a plurality of tasks, e.g. taking priority or time dependency constraints into consideration scheduling strategies G06F9/4881 and subgroups
• CPC Class Codes: G06T 1/20 Processor architectures; Processor configuration, e.g. pipelining
• CPC Class Codes: G06T 2200/28 involving image processing hardware

Abstract

A vehicle interface system includes a graphics processing unit and a plurality of processing domains. The processing domains execute vehicle applications and generate tasks for the graphics processing unit. The system further includes a task scheduler configured to receive the tasks generated by the processing domains and to determine an order in which to send the tasks to the graphics processing unit. The graphics processing unit processes the tasks in the order determined by the task scheduler and generates display data based on the tasks. The system further includes an electronic display configured to receive the display data generated by the graphics processing unit and to present the display data to a user.

Claims

1. A vehicle interface system comprising:

a graphics processing unit;

a plurality of processing domains configured to execute vehicle applications and generate tasks for the graphics processing unit;

a rendering core comprising a task scheduler configured to receive the tasks generated by the processing domains and to determine an order in which to send the tasks to the graphics processing unit, wherein the graphics processing unit processes the tasks in the order determined by the task scheduler and generates display data based on the tasks; and

an electronic display configured to receive the display data generated by the graphics processing unit and to present the display data to a user.

2. The vehicle interface system of claim 1, wherein the task scheduler identifies a priority level associated with each of the tasks and determines the order in which to send the tasks to the graphics processing unit based on the identified priority levels.

3. The vehicle interface system of claim 2, wherein identifying a priority level associated with a task comprises:

identifying which of the plurality of processing domains generated the task;

identifying a priority level associated with the identified processing domain; and

assigning a priority level to the task according to the priority level associated with the identified processing domain.

4. The vehicle interface system of claim 1, wherein the plurality of processing domains comprise:

a high reliability domain configured to execute vehicle critical applications and generate high priority tasks for the graphics processing unit; and

a lower reliability domain configured to execute lower priority vehicle applications and generate low priority tasks for the graphics processing unit.

5. The vehicle interface system of claim 1, wherein the rendering core comprises a first application program interface configured to receive and manage a first set of tasks generated by a first set of the processing domains and to provide the first set of tasks to the scheduler.

6. The vehicle interface system of claim 5, wherein the task scheduler is configured to:

identify a priority level associated with each of the tasks received at the application program interface;

receive an interrupt from the graphics processing unit requesting a task for processing; and

send a task with a highest identified priority level to the graphics processing unit in response to receiving the interrupt.

7. The vehicle interface system of claim 5, further comprising a second application program interface configured to receive and manage a second set of tasks generated by a second set of the processing domains, the second set of processing domains comprising one or more of the processing domains not in the first set of processing domains.

8. The vehicle interface system of claim 1, wherein the rendering core comprises a plurality of remote procedure call endpoints, wherein each of the remote procedure call endpoints is designated for one of the plurality of processing domains and configured to manage the tasks generated by the designated processing domain.

9. The vehicle interface system of claim 1, wherein the graphics processing unit is configured to identify pieces of each task to be displayed and to store the identified pieces in a framebuffer.

10. The vehicle interface system of claim 1, wherein the rendering core comprises a plurality of framebuffers, wherein each of the framebuffers is designated for one of the plurality of processing domains and configured to store pieces of each task identified by the graphics processing unit as pieces of the task to be displayed.

11. The vehicle interface system of claim 10, wherein the rendering core comprises a compositor configured to receive the identified pieces of the tasks from the plurality of framebuffers and to generate a display task by assembling the identified pieces.

12. The vehicle interface system of claim 11, wherein the graphics processing unit receives the assembled task from the task scheduler and generates the display data based on the assembled task.

13. A vehicle interface system comprising:

a graphics processing unit;

a multi-core processor comprising;

a first processing core configured to execute high priority vehicle applications and generate high priority tasks for the graphics processing unit, and

a second processing core configured to execute low priority vehicle applications and generate low priority tasks for the graphics processing unit;

a graphics processing unit driver configured to receive and manage tasks generated by each of the processing cores;

a task scheduler configured to identify a priority level associated with each of the tasks received at the graphics processing unit driver and to determine an order in which to send the tasks to the graphics processing unit based on the identified priority levels, wherein the graphics processing unit processes the tasks in the order determined by the task scheduler and generates display data based on the tasks; and

an electronic display configured to receive the display data generated by the graphics processing unit and to present the display data to a user.

14. The vehicle interface system of claim 13, wherein the task scheduler is configured to:

receive an interrupt from the graphics processing unit requesting a task for processing;

determine which of the tasks received at the graphics processing unit driver has a highest identified priority level; and

send a task with the highest identified priority level to the graphics processing unit in response to receiving the interrupt.

15. The vehicle interface system of claim 13, wherein identifying a priority level associated with a task comprises:

identifying which of the plurality of processing cores generated the task;

identifying a priority level associated with the identified processing core; and

assigning a priority level to the task according to the priority level associated with the identified processing core.

16. The vehicle interface system of claim 13, wherein the high priority tasks are generated by vehicle applications that relate to at least one of a safety of the vehicle and critical vehicle operations.

17. The vehicle interface system of claim 13, wherein the low priority tasks are generated by at least one of vehicle infotainment applications, cloud applications, and autonomous driver assistance system applications.

18. A method for generating a user interface in a vehicle interface system, the method comprising:

executing, by a first core of a multi-core processor, high priority vehicle applications in a first processing domain, the high priority vehicle applications generating high priority tasks;

executing, by a second core of the multi-core processor, low priority vehicle applications in a second processing domain, the low priority vehicle applications generating low priority tasks;

identifying, by a task scheduler, a priority level associated with each of the generated tasks;

determining, by the task scheduler, an order in which to send the tasks to a graphics processing unit based on the identified priority levels;

processing, by the graphics processing unit, the tasks in the order determined by the task scheduler, the graphics processing unit generating display data based on the tasks; and

presenting the display data generated by the graphics processing unit via an electronic display of the vehicle interface system.

19. The method of claim 18, wherein identifying a priority level associated with a task comprises:

identifying which of the plurality of processing domains generated the task;

identifying a priority level associated with the identified processing domain; and

assigning a priority level to the task according to the priority level associated with the identified processing domain.

20. The method of claim 18, wherein determining the order in which to send the tasks to the graphics processing unit comprises:

receiving an interrupt from the graphics processing unit requesting a task for processing;

determining which of the generated tasks has a highest identified priority level; and

sending a task with the highest identified priority level to the graphics processing unit in response to receiving the interrupt.