Read-only-memory (ROM) having a memory cell that stores a plurality of bits of information
US6002607A · kind A · utility
34Cited by
7References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 24, 1998 |
| Grant date | Dec 14, 1999 |
| Priority date | — |
| Expiry date | Feb 24, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2211/5617
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A column of read-only-memory (ROM) cells is programmed to store two or more bits of information in each cell by forming a plurality of coding (bit) lines adjacent to the column of cells, and selectively connecting the cells to the plurality of coding lines so that the different logic conditions defined by the two or more bits are represented by the coding lines that are connected to a memory cell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.