Processor apparatus including specific signal processor core capable of dynamically scheduling tasks and its task control method

1 . A processor apparatus comprising:

at least one general purpose central processing unit adapted to load object codes of requested newly-dispatched tasks to a memory;

at least one specific signal processing unit core adapted to download the object codes of said newly-dispatched tasks from said memory to dynamically schedule generation and extinction of said newly-dispatched tasks and schedule operations of currently-executed tasks in accordance with instructions from said general purpose central processing unit.

2 . The processor apparatus as set forth in claim 1 , wherein a format of each said instructions is formed by a field of a requested instruction content of a command, a field of a source of the command, a field of a destination of result data of the command, and a field showing a priority of the requested instruction content of said command.

3 . The processor apparatus as set forth in claim 1 , wherein when said command is a specific signal processing request, said specific signal processing unit core downloads the object codes of a respective one of said newly-dispatched tasks.

4 . The processor apparatus as set forth in claim 2 , wherein when said command is a processing start command, said specific signal processing unit core starts execution of a respective one of said newly-dispatched tasks.

5 . The processor apparatus as set forth in claim 2 , wherein when said command is a processing end command, said specific signal processing unit core ends execution of a respective one of said newly-dispatched tasks.

6 . The processor apparatus as set forth in claim 1 , wherein when said command is a specific signal processing request, said specific signal processing unit core downloads the object codes of a respective one of said newly-dispatched tasks, and subsequently, starts execution of the respective one of said newly-dispatched tasks.

7 . The processor apparatus as set forth in claim 1 , wherein said general purpose central processing unit comprises a plurality of general purpose processing unit cores, each of said general purpose central processing unit cores including:

a central processing unit;

a processor element; and

a cache memory section.

8 . The processor apparatus as set forth in claim 1 , wherein said general purpose central processing unit comprises a symmetrical multiprocessor, said symmetrical multiprocessor including:

a plurality of processor elements; and

a snoop cache memory section.

9 . The processor apparatus as set forth in claim 1 , wherein said general purpose central processing unit comprises a single general purpose processing unit core, said general purpose central processing unit core including:

a central processing unit; and

a cache memory section.

10 . The processor apparatus as set forth in claim 1 , wherein said memory comprises a shared memory section of an internal memory.

11 . The processor apparatus as set forth in claim 1 , wherein said memory comprises a shared memory section of an external memory.

12 . A task control method for a processor apparatus including at least one general purpose central processing unit core and at least one specific signal processing unit core, comprising:

downloading object codes of a task to said specific signal processing unit core in accordance with a respective one of specific signal processing request signals corresponding to processes of said general purpose central processing unit core;

starting execution of said task by said specific signal processing unit core; and

ending the execution of said task when said specific signal processing unit core has received a respective one of processing end signals relating to said specific signal processing request signals from said general purpose central processing unit core.

13 . The method as set forth in claim 12 , wherein said specific signal processing unit core starts said execution of said task in response to a receipt of a respective one of processing start signals relating to said specific signal processing request signals from said general purpose central processing unit core.

14 . A task control method for a processor apparatus including a plurality of processor elements and a specific signal processing unit core, comprising:

executing a first task requested from a first process of a first one of said processor elements by said specific signal processor core;

executing a second task requested from a second process of a second one of said processor elements by said specific signal processor core, said first and second tasks being parallelly executed; and

ending execution of said first task to release a memory for a third process of a third one of said processor elements.