Data storage device
US5563945A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 28, 1994 |
| Grant date | Oct 8, 1996 |
| Priority date | — |
| Expiry date | Feb 28, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07F7/082
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A data storage device (9) comprises an array of electronic memory locations (20) for storing data. An address input terminal (10) provides coupling to an address source and is coupled to provide first address signals from the address source to address the memory locations of the array (20). A data output terminal (12) provides coupling to a data reception arrangement and is connected to the array (20) for receiving data signals therefrom in response to the address signals. The data signals are indicative of the data stored in the memory locations addressed by the address signals. An address encryption arrangement (14) is coupled between the address input terminal (10) and the array (20) for encrypting the first address signals. The address encryption arrangement (14) contains encrypting data which is protected from direct optical determination, the encrypting data being used to encrypt the first address signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.