Media sensing method of media dispenser

A media sensing method of a media dispenser comprising:

• setting a multi-media discharge mode;
• setting an initial reference range by shifting a reference value of an RVDT (Rotary Variable Differential Transducer) sensor as much as a predetermined value;
• receiving a multi-media and detecting a voltage according to the thickness of the multi-media;
• comparing a voltage value according to the thickness of the initial reference range and a voltage value according to the thickness of the currently discharged multi-media;
• and
• rejecting the currently discharged multi-media if the detected voltage value of the currently discharged multi-media is greater than the initial reference range voltage value, and discharging the multi-media if the detected voltage value of the currently discharged multi-media is smaller than or the same as the initial reference range voltage value.

A media sensing method of a media dispenser comprising:

• setting an initial reference range for width and thickness of a media;
• obtaining an average value of thickness and width of bills accumulatively stored by discharging sample media and setting a reference range;
• comparing the reference range for the thickness and width of the sample media and the initial reference range, and variably setting the initial reference range;
• and
• respectively comparing the variably-set reference range and a reference range of a currently discharged media according to a media withdrawal request, and determining whether the media is normal or not.