Memory controller for protected memory with automatic access granting capability
US4937736A · kind A · utility
49Cited by
12References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1987 |
| Grant date | Jun 26, 1990 |
| Priority date | — |
| Expiry date | Nov 30, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/1475
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for controlling access to data blocks stored by addresses in a memory and concurrently accessible by a plurality of transactions is provided. The method includes the steps of receiving an address of a data block to be accessed by a first transaction, deriving from the address an access table entry corresponding to the data block where the entry includes lock data that governs access to the data block, and providing the access if permitted by the lock data, or providing the access, if not permitted by the lock data, and recording the occurrence of the access in the lock data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.