Patent ID: 9281022
Filing Date: 2016-03-08
CPC Classification: G11C

Claim Text:
1. A method of tracking the state of a floating body memory cell for turning on and off a vertical bipolar holding mechanism to ensure that a state of the floating body memory cell is maintained, said method comprising: providing a reference cell that measures a potential level of the floating body of the floating body memory cell; providing a high level floating body potential detector and a low level floating body potential detector; inputting the potential level of the floating body to the high and low level floating body potential detectors; receiving output signals from the high and low level floating body potential detector by a controller; and controlling a voltage regulator to control a voltage level input to a source line, bit line or DNWell line of the floating body memory cell to turn off or turn on the vertical bipolar holding mechanism based upon input signals received from the high level floating body potential detector and the low level floating body potential detector.