Optically controlled read only memory
US8604521B2 · kind B2 · utility
4Cited by
2References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 21, 2008 |
| Grant date | Dec 10, 2013 |
| Priority date | — |
| Expiry date | Oct 27, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/182
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An optically controlled read only memory is disclosed. The optically controlled read only memory includes a substrate, a plurality of memory cells having optical sensors disposed on the substrate, and at least one shielding structure disposed on the optical sensor, in which the shielding structure selectively shields a portion of the optical sensor according to a predetermined layout. Preferably, the optically controlled read only memory of the present invention is capable of providing two types or more program codes and outputting different program codes carrying different function under different lighting condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.