Method for altering a word stored in a write-once memory device
US6901549B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 14, 2001 |
| Grant date | May 31, 2005 |
| Priority date | — |
| Expiry date | Jun 1, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C17/14
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The preferred embodiments described herein provide a method for altering a word stored in a write-once memory device. In one preferred embodiment, a write-once memory device is provided storing a word comprising a plurality of data bits and a plurality of syndrome bits. The word is altered by identifying X bit(s) in the word that are in an un-programmed state and switching the X bit(s) from the un-programmed state to a programmed state, where X is sufficient to introduce an uncorrectable error in the word. Other preferred embodiments are provided, and each of the preferred embodiments can be used alone or in combination with one another.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.