| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To manage the maximum voltage while securing real time processing. <P>SOLUTION: A chip (1) is provided with: a resource manager (2); various function blocks (3 to 6); a temperature sensor (13); and a performance counter (15) or the like. The resource manager manages tasks to be performed by the various function blocks, and calculates task progress degree (38) for each task from an operation rate (α) to be obtained from the performance counter and a dead line (39) included in the task information (33), and determines the priority of the tasks. When a temperature detected from the temperature sensor during task performance is a threshold (T_max) or more, the resource manager reads a power budget value (P_max) set for the purpose of turning a temperature to be less than the threshold from a memory (9), and stops a clock to be supplied to the function block which is performing the task whose priority is low, or reduces the frequency of the clock until a chip power value(p_sum) is turned to be less than the power budget value. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
