Non-volatile memory controlling apparatus and applications of the same to electronic computer peripheral equipments

A library apparatus to which a non-volatile memory is applied, comprising:

• a cartridge storage cell capable of accommodating a plurality of cartridge type recording media therein;
• a recording/reproducing apparatus for recording/reproducing data onto/from a cartridge type recording medium;
• an accessor mechanism section for transporting a cartridge type recording medium to access said cartridge storage cell and said recording and reproducing apparatus;
• an accessor control section for controlling said accessor mechanism section;
• and
• an accessor power source section for supplying power to said accessor mechanism section and said accessor control section;
• said accessor control section including:
• a non-volatile memory for storing therein a power monitoring flag for monitoring power turning on/off information of said accessor power source section,
• a processor for setting said power monitoring flag to data of turning off of the power in response to a detection signal of turning off of the power without accessing said non-volatile memory when a resetting operation of said apparatus takes place as a result of a trouble of the power after turning on of the power of said accessor power source section, and then checking said power monitoring flag in an initial diagnosis after turning on of the power
• said processor further setting said power monitoring flag to data of turning on of the power when the checking of said power monitoring flag reveals data of turning off of the power, but determining an abnormal condition and outputting error information when the checking of said power monitoring flag reveals data of turning on of the power;
• wherein, whether the power is turned on after the power has been turned off regularly or said apparatus is activated after it has been reset by a trouble of the power is discriminated by the processing of said processor.