High-density information storage apparatus using electron emission and methods of writing, reading and erasing information using the same

An information writing method using a high-density information storage apparatus comprising a lower electrode, a photoconductive layer and a recording medium sequentially provided on the lower electrode, light radiating means for making the photoconductive layer conductive;

• charged particle emitting means provided on the recording medium, charged particle loss preventing means for preventing loss of charged particles while injecting the charged particles into the recording medium using the charged particle emitting means, and a power supply for supplying a predetermined voltage to the lower electrode and the charged particle emitting means, the information writing method comprising:
• a first step of adjusting the distance between the recording medium and a charged particle emitting area of the charged particle emitting means;
• and
• a second step of injecting charged particles into the recording medium, thereby forming a conductive region corresponding to predetermined data in the recording medium.

An information reading method using a high-density information storage apparatus comprising a lower electrode, a photoconductive layer and a recording medium sequentially provided on the lower electrode, light radiating means for making the photoconductive layer conductive;

• charged particle emitting means provided on the recording medium, charged particle loss preventing means for preventing loss of charged particles between the recording medium and the charged particle emitting means, and a power supply for supplying a predetermined voltage to the lower electrode and the charged particle emitting means, the information reading method comprising:
• a first step of adjusting the distance between the recording medium and a charged particle emitting area of the charged particle emitting means;
• and
• a second step of reading data from the recording medium by recognizing charged particles emitted from the recording medium while moving the charged particle emitting area above the recording medium.

An information erasing method using a high-density information storage apparatus comprising a lower electrode, a photoconductive layer and a recording medium sequentially provided on the lower electrode, light radiating means for making the photoconductive layer conductive;

• charged particle emitting means provided on the recording medium, charged particle loss preventing means for preventing loss of charged particles between the recording medium and the charged particle emitting means, and a power supply for supplying a predetermined voltage to the lower electrode and the charged particle emitting means, the information erasing method comprising:
• a first step of grounding the lower electrode;
• and
• a second step of discharging charged particles injected into the recording medium through lower electrode by converting the photoconductive layer into a conductive layer, thereby erasing data from the recording medium.

An information erasing method using a high-density information storage apparatus comprising a lower electrode, a photoconductive layer and a recording medium sequentially provided on the lower electrode, light radiating means for giving conductivity to the photoconductive layer;

• charged particle emitting means provided on the recording medium, charged particle loss preventing means for preventing loss of charged particles between the recording medium and the charged particle emitting means, and a power supply for supplying a predetermined voltage to the lower electrode and the charged particle emitting means, the information erasing method comprising:
• a first step of grounding the lower electrode;
• and
• a second step of discharging all charged particles injected into the recording medium through lower electrode by converting the entire photoconductive layer into a conductive layer, thereby entirely erasing all data from the recording medium.