US 6,639,825 B2 · Data memory

Abstract

The data memory device has a plurality of memory cells for storing data which are represented by a first physical value of the storing memory elements, especially their conductivity or charge. The memory elements are, for example, storage capacitors. A detection device detects the first physical value representing the data and a second detection device is provided for detecting a second physical value of the storage cells or constituents of the same, especially of the storage element, especially the leakage current of the storage capacitor provided for storing the data. The second physical value represents a second detectable item of information in addition to the first physical value representing the data, independently of the first physical value. The invention also relates to a method for permanently storing information in storage cells of a data storage device for reversibly or permanently storing data.

Claims20

Dependent claims

A data memory, comprising:

a multiplicity of memory cells for storing data represented by a first physical variable and for storing a detectable information item represented by a second physical variable;
a first detection device connected to said memory cells and configured to detect the first physical variable representing the data;
a second detection device connected to said memory cells and configured to detect the second physical variable representing the second detectable information item independently of the data represented by the first physical variable;
wherein the first physical variable is a conductivity associated with a respective memory cell, and the second physical variable is a discharging or charging time associated with a respective memory cell.

1 more element

Dependencies are inferred from the claim text.

Data memory

Life of this patent

Data memory

Life of this patent

Abstract

Claims20