System and method for controlling logical value and integrity of data in memory systems
US6970382B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2004 |
| Grant date | Nov 29, 2005 |
| Priority date | — |
| Expiry date | Dec 29, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C16/12
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a digital memory system, systems and methods that control a logical value and an integrity of data represented by charge are provided. In one embodiment, a bit line is coupled to the cell. A voltage generator is arranged to generate a plurality of cell operating voltages varying in response to a voltage control signal. A controller generates a control signal, stores a predetermined one of logical values in a cell by generating a series of operating voltages, transmits the series of operating voltages, and determines whether the predetermined one of the logical values has been stored in the cell in response to a voltage on the bit line. The controller includes a charge integrity estimating module and determines whether the predetermined one of the logical values has been stored in the cell by initiating the operation of the charge integrity estimating module.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.