Patent Document ID: 4441125
Application ID: 06317876
Patent Status: 1

Claim One:
1. A solid state image sensor comprising: (a) a dynamic random access memory system having one or more arrays of dynamic random access memory cells adapted to have at least two data states, said memory cells including one or more MOSFETs, one or more sense amplifiers for comparing the data states of the memory cells to a threshold value, a dummy-cell-capacitor free threshold generator for providing a relatively light-stable threshold value to the one or more sense amplifiers, means for refreshing the memory cells to restore the data states, and means coupled to the one or more sense amplifiers for writing out an indication of the data states of the memory cells; and (b) one or more lenses for directing and focusing a light image onto said dynamic random access memory cells thereby to alter the data states of the memory cells in response to the light image.