49 results about "Periodic scheduling" patented technology

This invention relates to a method and controller for controlling cycle scheduling. Both a foreground / background system and a real-time operating system are located within the controller. The method includes: S1, the foreground / background system receives data from an input module connected to the controller and performs sequential logic execution processing on the data until the data processing is complete, obtaining the corresponding execution result; S2, performing context switching processing between the foreground / background system and the real-time operating system to switch from the foreground / background system to the real-time operating system within the controller; S3, the real-time operating system processes user program tasks until a preset time period is reached; S4, performing context switching processing between the real-time operating system and the foreground / background system to switch from the real-time operating system to the foreground / background system within the controller; S5, the foreground / background system outputs the execution result to an output module connected to the controller.

The invention discloses an NPU (Network Processing Unit) computing power dynamic allocation method and an on-chip heterogeneous system, and the method comprises the following steps: locking scheduling configuration parameters of an NPU, the scheduling configuration parameters comprising a time slice allocation strategy of the NPU between a non-real-time operating system and a real-time operating system; in the non-real-time operating system, a periodic scheduling timer is initialized and started according to the scheduling configuration parameters; in response to a time slice switching signal sent by the periodic scheduling timer, triggering a first context switching operation; in response to a real-time preemption event generated by the real-time operating system side, triggering a second context switching operation; and after the calculation task of the real-time operation system is executed, triggering a third context switching operation, and recovering the preempted hardware context of the non-real-time operation system, so that the interrupted calculation task can be continuously executed. According to the method, the safety and efficiency of dynamic allocation of the computing power are improved.