Storage device with heat scanning source for readout

Claim 1

A SYSTEM FOR STORING AND READING OUT INFORMATION COMPRISING, IN COMBINATION, A PLANAR FERROELECTRIC ELEMENT; A PLANAR PHOTOCONDUCTIVE ELEMENT AT ONE SURFACE OF THE TO THE FERROELECTRIC ELEMENT AT ONE SURFACE OF THE FERROELECTRIC ELEMENT; MEANS COUPLED TO THE TWO ELEMENTS FOR APPLYING A VOLTAGE ACROSS THE TWO ELEMENTS TO THEREBY PRODUCE AN ELECTRIC FIELD THROUGH THE TWO ELEMNTS; MEANS FOR CONCURRENTLY APPLYING A LIGHT PATTERN TO THE PHOTOCONDUCTIVE ELEMENT WHEREBY A PATTERN OF POLARIZATION IS PRODUCED IN THE FERROELECTRIC ELEMENT; MEANS FOR PRODUCING AN ELECTRON BEAM AND DIRECTING IT AT THE FERROELECTRIC ELEMENT FOR HEATING THE FERROELECTRIC ELEMENT; A DISPLAY DEVICE INCLUDING AN ELECTRON BEAM SOURCE AND A SCREEN ON WHICH THE BEAM IMPINGES FOR PRODUCING A VISUAL DISPLAY; MEANS COUPLED TO THE FERROELECTRIC ELEMENT FOR PRODUCING A PYROELECTRIC VOLTAGE WHEN THE ELECTRON BEAM STRIKES THE FERROELECTRIC ELEMENT; MEANS COUPLED TO THE LAST-NAMED MEANS FOR APPLYING SAID VOLTAGE AS A MODULATING VOLTAGE FOR THE ELECTRON BEAM OF SAID DISPLAY DEVICE; AND MEANS COUPLED TO THE ELECTRON BEAM SOURCE AND TO THE MEANS FOR PRODUCING AN ELECTRON BEAM FOR SCANNING BOTH OF THE ELECTRON BEAMS IN SYNCHRONISM.