Information storage apparatus and method for operating the same
US5848002A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 1996 |
| Grant date | Dec 8, 1998 |
| Priority date | — |
| Expiry date | Aug 20, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2211/5642
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A mask ROM is so configured as to read out information through the utilization of a cumulative time delay involved when a read-out signal applied to memory elements making connection between a word line WL1 and bit lines BL1 crossing the word line is passed through delay elements R1 to R7, that is, as to read out stored information on a time base, in which the conductions of switching transistors T1 to T8 are controlled by the outputs of the delay elements R1 to R7 and the information appearing at the bit line BL1 is sequentially read out at a predetermined time corresponding to a time delay resulting from the delay elements R1 to R7.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.