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Task processor

  • US 9,104,470 B2
  • Filed: 04/02/2014
  • Issued: 08/11/2015
  • Est. Priority Date: 08/16/2007
  • Status: Active Grant
First Claim
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1. A task control circuit connected via a signal line to a processor which executes a task, comprising:

  • a state register that stores state data representing state of a task; and

    a task switching circuit that controls state of a task, whereinthe task switching circuit, when a system call signal is received from the processor, reads out a parameter from an internal register of the processor by itself, performs a system call process based on the parameter, updates the state data, and writes back a return value resulting from the system call process in the internal register by itself.

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