Scalable and configurable multimedia system for a vehicle

• US 7,664,931 B2
• Filed: 07/01/2005
• Issued: 02/16/2010
• Est. Priority Date: 07/01/2004
• Status: Active Grant

• Current Assignee: Harman Becker Automotive Systems GmbH (Samsung Electronics Co. Ltd.)
• Original Assignee: Harman Becker Automotive Systems GmbH (Samsung Electronics Co. Ltd.)
• Inventors: Erforth, Thomas, Rupprecht, Matthias
• Primary Examiner(s): Chan; Eddie P
• Assistant Examiner(s): Partridge; William B
• Application Number:
  US11/173,266
• Publication Number:
  US 20060095756A1
• Time in Patent Office: 1,691 Days
• Field of Search: 712/226
• US Class Current: 712/42
• CPC Class Codes: G01C 21/36 Input/output arrangements for on-board computers
• CPC Class Codes: G06F 15/7867 with reconfigurable architecture
• CPC Class Codes: H04N 21/2146 located in mass transportation means, e.g. aircraft, train or bus flight-deck installations for entertainment or communications B64D11/0015; arrangements specially adapted for transportation systems in broadcast systems H04H20/62; moving wireless networks H04W84/005

Abstract

A scalable and fully configurable computing architecture for a mobile multimedia architecture used in a vehicle includes a head unit having a processor, a field programmable gate array and a memory. The processor and the memory are configured to communicate over a first bus that is a dedicated memory bus, and the processor and the field programmable gate array are configured to communicate over a separate second bus. The field programmable gate array is configured to be loaded from memory with part of a multimedia vehicle-related application-specific functionality that is executable by the field programmable gate array, and the processor is cooperatively operable with the field programmable gate array to execute another portion of the multimedia vehicle-related application-specific functionality. The multimedia vehicle-related application-specific functionality in the field programmable gate array may be changed with software and downloaded to the field programmable gate array in the field. In addition, due to the first and second busses being recognized industry standard busses, any of the processor, the field programmable gate array and the memory are fully scaleable and configurable.

Claims

1. A computing architecture for a mobile multimedia system used in a land-based vehicle comprised of a plurality of interconnected electrical components including a first processor, a second processor, a memory, and a field programmable gate array connected with each other by a standardized data bus for the exchange of data between the components, where, during system start-up, high priority or real-time applications are executed by the first processor and lower priority applications are executed by the second processor, where the field programmable gate array is configured, upon the system start-up or during system operation, to load data from the memory to realize application-specific functionality by logic functions implemented inside the field programmable gate array, and where upon completion of the system start-up, an application being executed is transferred from the first processor to the second processor to balance applications between the first processor and the second processor.

2. The computing architecture according to claim 1, where the field programmable gate array serves as a scalable hardware interface between at least one of the first processor and the second processor and peripheral components comprising at least two of an external memory, a display, a network, a mass storage, an input/output system controller and a peripheral input/output component.

3. The computing architecture according to claim 1, where time critical or computing intensive functions are realized by dedicated scalable hardware accelerators included in the field programmable gate array.

4. The computing architecture according to claim 1, where system functions that include graphic/video processing, digital video/versatile disc (DVD) decoding or digital signal processing (DSP) functions are shared between the application software running on at least one of the first processor and the second processor and the field programmable gate array so that the field programmable gate array is configured to perform preprocessing or post processing of input/output (I/O) data.

5. The computing architecture according to claim 1, where the memory comprises at least one of a random access memory or a flash memory, or combinations thereof.

6. The computing architecture according to claim 1, where the first processor, the second processor, and the memory are integrated as a module.

7. The computing architecture according to claim 1, where the application-specific functionality includes at least one of digital video/versatile disc (DVD) decoding, digital signal processing, and graphic functions.

8. The computing architecture according to claim 1, where the field programmable gate array includes an embedded processor core configured to implement a hardware accelerator.

9. The computing architecture according to claim 1, where the field programmable gate array is configured to load instructions comprising a first part of a multimedia vehicle-related application-specific functionality that are cooperatively executable with instructions comprising a second part of the multimedia vehicle-related application-specific functionality that are external to the field programmable gate array and are executable with at least one of the first processor and the second processor.

10. The computing architecture of claim 1, where the standardized data bus is a recognized industry standard communication bus configured to communicate data between the field programmable gate array and at least one of the first processor and the second processor, and

where the field programmable gate array is configured to load instructions comprising a first part of a plurality of different and independently operable multimedia vehicle-related application-specific functionalities that are cooperatively executable with instructions comprising a respective corresponding second part of the plurality of different and independently operable multimedia vehicle-related application-specific functionalities that are external to the field programmable gate array and are executable with at least one of the first processor and the second processor.

11. The computing architecture of claim 10, where the memory is configured to store the instructions comprising the plurality of different and independently operable multimedia vehicle-related application-specific functionalities, the memory accessible by the at least one of the first processor and the second processor to download the first part of the plurality of different and independently operable multimedia vehicle-related application-specific functionalities over the recognized industry standard communication bus to the field programmable gate array.

12. The computing architecture of claim 10, where the instructions comprising the at least one of the first part of the plurality of different and independently operable multimedia vehicle-related application-specific functionalities is executable by the field programmable gate array to decode at least one of video or audio information, or combinations thereof, and the at least one of the first processor and the second processor is configured to further process the decoded at least one of video or audio information.

13. The computing architecture of claim 10, where the first processor, the second processor, the field programmable gate array, and the recognized industry standard communication bus are configured to operate as a head unit for a vehicle.

14. The computing architecture of claim 10, where at least one of the first part of the different independently operable multimedia vehicle-related application-specific functionalities is shared by at least one other of the first part of the different independently operable multimedia vehicle-related application-specific functionalities to enable communication with different respective hardware external to the field programmable gate array and the at least one of the first processor and the second processor.

15. The computing architecture of claim 10, where at least one of the first processor and the second processor is configured to access and download the instructions stored in the memory to the field programmable gate array over the predefined industry standard communication bus.

16. The computing architecture of claim 10, where the instructions comprise a plurality of multimedia related applications in support of the operation of the vehicle head unit, where at least one of the multimedia related applications is downloaded into the field programmable gate array for execution, at least one of the multimedia related applications are executed with the at least one of the first processor and the second processor, and at least one of the multimedia related applications are executed with a combination of the field programmable gate array and the at least one processor.

17. The computing architecture of claim 10, where the instructions comprise instructions to provide the functionality of a navigation system and instructions to provide the functionality of a digital video device decoder.

18. The computing architecture of claim 10, where the memory is configured to communicate over a dedicated recognized industry standard memory bus to the at least one of the first processor and the second processor, and the instructions that are downloaded to the field programmable gate array are communicated over the dedicated recognized industry standard memory bus to the at least one of the first processor and the second processor, and then over the predefined industry standard communication bus to the field programmable gate array.

19. The computing architecture of claim 1, where the field programmable gate array is configured to transfer the application being executed from the first processor to the second processor to balance applications being executed between the first processor and the second processor.

20. A computing architecture for a mobile multimedia system used in a land-based vehicle comprising:

a first processor and a second processor;

a memory;

a field programmable gate array; and

a standardized data bus interconnecting the first processor, the second processor, the memory, and the field programmable gate array, where, during system start-up, high priority or real-time applications are executed by the first processor and lower priority applications are executed by the second processor, where the field programmable gate array is configured, upon the system startup or during system operation, to load data from the memory to realize application specific functionality by logic functions implemented inside the field programmable gate array, and where upon completion of the system start-up, tasks for completion are transferred between the first processor and the second processor to level a first task load of the first processor and a second task load of the second processor with respect to one another when the leveled first task load and the leveled second task load are associated with a first overall execution time lower than a second overall execution time associated with the first task load and the second task load being unleveled.

21. The computing architecture of claim 20, where the field programmable gate array is configured to:

determine that the first overall execution time is lower than the second overall execution time; and

transfer the tasks for completion between the first processor and the second processor in response to the determination.

22. A method of operating a mobile multimedia system used in a land-based vehicle, the mobile multimedia system comprising a plurality of interconnected electrical components including a first processor, a second processor, a memory, and a field programmable gate array connected with each other by a standardized data bus for the exchange of data, the method comprising:

selecting the first processor to execute high priority or real-time applications during start-up of the mobile multimedia system;

selecting the second processor to execute lower priority applications during the start-up of the mobile multimedia system;

loading, with the field programmable gate array during the start-up of the mobile multimedia system or during operation of the mobile multimedia system, data from the memory to realize application-specific functionality by logic functions implemented inside the field programmable gate array; and

balancing, upon completion of the start-up of the mobile multimedia system, a first task load of the first processor with a second task load of the second processor.

23. The method of claim 22 further comprising determining an overall execution time associated with the first task load and the second task load, where balancing the first task load with the second task load comprises balancing the first task load with the second task load to achieve a shorter overall execution time than the determined overall execution time associated with the first task load and the second task load prior to the balancing.