Analog memory for storing digital information
US4910706A · kind A · utility
Inventor
Key dates
| Filing date | Aug 4, 1983 |
| Grant date | Mar 20, 1990 |
| Priority date | — |
| Expiry date | Aug 4, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P90/02
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention is directed to an analog memory for storing digital information in analog signal form. Typically, digital information is stored in digital signal form, where each digital bit is stored in a separate digital memory cell. In accordance with the present invention, an analog memory such as a charge transfer device (CTD), bubble memory, or magnetostrictive memory is used to store analog signals. Each analog signal is representative of a plurality of digital bits, thereby providing storage for a plurality of digital bits in each analog memory cell. Use of such an analog memory in combination with a digital system facilitates a hybrid memory, where digital information is stored in analog signal form. In one embodiment, a digital to analog converter is used to convert digital information from a digital processor to analog signal form for storage in an analog memory and an analog to digital converter is used to convert analog signals stored in an analog memory to digital signal form for processing with the digital processor. In another embodiment, an analog read only memory is used to store a program for a stored program digital computer in analog signal form. Storage …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.