Analog solid state memory
US4291390A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 1979 |
| Grant date | Sep 22, 1981 |
| Priority date | — |
| Expiry date | Sep 28, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C8/005
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A solid state device capable of providing long-term storage of analog signals which in a particular embodiment utilizes a plurality of MNOS storage elements. An input analog signal is applied to a plurality of temporary storage means each associated with an MNOS storage element for temporarily storing a charge proportional to the amplitude of the portion of the input analog signal applied thereto. Storage control means are used to transfer the temporarily stored charges to the long-term MNOS storage elements so that controlled amounts of carrier charges are stored in the nitride layers thereof, such controlled amounts being substantially linearly proportional to the temporarily stored charges associated therewith. In a particular embodiment the input analog signal may be supplied via a surface acoustic wave (SAW) device and coupled to the MNOS device directly or it may be coupled to a charge-coupled device (CCD) and thence coupled to the MNOS device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.