| 主权项 |
1. A magnetic recording medium processing device for use with a magnetic recording medium comprising a magnetic strip, the magnetic recording medium processing device comprising:
a detection mechanism structured to detect the magnetic recording medium when inserted into or discharged from an insertion opening; a pre-head structured to slide on the magnetic strip formed on said magnetic recording medium to read magnetic data; a shutter structured to open and close in response to the detection result of said detection mechanism; a card processor structured to process magnetic information recorded on said magnetic recording medium; and a magnetic field generating device comprising:
a magnetic field generator structured to generate a magnetic field by a resonance unit; anda drive control circuit structured to control driving of said magnetic field generator; wherein said drive control circuit comprises:
a drive power supply structured to supply a drive voltage,a reference potential circuit; anda resonance drive circuit structured to drive said resonance unit; said resonance unit comprises a resonance circuit in which an inductor and a capacitor are connected between a first node and a second node, and said resonance unit is structured to receive said drive voltage at said first node, and resonate, while said second node is connected to said reference potential circuit, to generate a magnetic field; and said resonance drive unit comprises a drive switch element which is connected between said second node at said resonance unit and said reference potential circuit and is to be switched between a conducting state and a non-conducting state depending on the control signal to switch the connection status of said second node at said resonance unit and said reference potential circuit between a connected state and a disconnected state. |
