| 摘要 |
<p>PURPOSE: To surely correct errors by preventing a state of the system from changing by changing a state flag if control system detects error condition and completing an execution of a high level, or the preceding program before executing an error recovery operation. CONSTITUTION: A computer system 10 has a processing element 12, receives an instruction from a main memory 20, and communicates with an operator through a keyboard 16 and display 18. An auto-changer 24 includes an optical drive 26, reads, and forwards data under the control of the processing element 12 through interface 22 to and from the main memory 20. Being grouped, an operation system of the main memory 20 and an operator software 32 control the cartridge selection of the auto-changer 24 and reading by the optical drive 26. A software transmits an interface protocol and an instruction I/O132 to the cartridge control part 134 and converts them into a sequence of sub- instruction, and plan execution part 136 optimally executes it best. A function adjustment part 138 adjusts the sub-instruction series, an executive block 140 generates a movement profile, a digital algorithm controls and monitors a servo control loop and monitors to cut off the power source in an abnormal case.</p> |
