Periodic process performing system and system on chip

A periodic process performing system comprising:

• a system processor configured to periodically execute a first periodic real-time process for a plurality of first time intervals starting at a first start time;
• a counter configured to generate a first tick signal for each of the plurality of first time intervals starting at a second start time, the second start time earlier than the first start time;
• power management circuitry configured to supply power to the system processor;
• clock management circuitry configured to supply a clock signal to the system processor;
• wakeup logic circuitry configured to transmit signals to the power management circuitry and the clock management circuitry, respectively, based on the first tick signal;
• the counter is further configured to generate a second tick signal for each of the plurality of first time intervals starting at a third start time, the third start time between the first start time and the second start time;
• and
• the system processor is further configured to start execution of the first periodic real-time process based on the second tick signal and the clock signal from the clock management circuitry.

A system-on-chip device comprising:

• an interface configured to receive requests from a host for a task to be periodically executed;
• and
• a periodic process performing system configured to execute a first periodic real- time process related to the requested task,
• the first periodic real-time process being a process which starts to be executed at the start of each first time interval of a plurality of first time intervals, the plurality of first time intervals calculated from a first start time;
• the periodic process performing system includes,
• a system processor configured to execute the first periodic real-time process,
• a counter configured to generate a first tick signal for each of the plurality of first time intervals from a second start time, the second start time earlier than the first start time, and
• generate a second tick signal for each of the plurality of first time intervals from a third start time, the third start time between the first start time and the second start time, and
• wakeup logic circuitry configured to receive the first tick signal from the counter, and transmit at least one signal which causes the system processor to enter a first state capable of executing the first periodic real-time process, and the system processor is further configured to,
• set the second start time, the third start time, and the plurality of first time intervals in the counter when the first period real-time process is allocated to the system processor, and
• start execution of the first periodic real-time process based on the second tick signal and a clock signal, the clock signal generated in response to the first tick signal.