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Class Information
Number: 711/164
Name: Electrical computers and digital processing systems: memory > Storage accessing and control > Control technique > Access limiting > With password or key
Description: Subject matter wherein authorization code information
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 4589064 |
System for controlling key storage unit which controls access to main storage |
May. 13, 1986 |
| 4580217 |
High speed memory management system and method |
Apr. 1, 1986 |
| 4513389 |
ROM security circuit |
Apr. 23, 1985 |
| 4472790 |
Storage fetch protect override controls |
Sep. 18, 1984 |
| 4446519 |
Method and apparatus for providing security for computer software |
May. 1, 1984 |
| 4439830 |
Computer system key and lock protection mechanism |
Mar. 27, 1984 |
| 4434464 |
Memory protection system for effecting alteration of protection information without intervention of control program |
Feb. 28, 1984 |
| 4409655 |
Hierarchial memory ring protection system using comparisons of requested and previously accessed addresses |
Oct. 11, 1983 |
| 4366537 |
Authorization mechanism for transfer of program control or data between different address spaces having different storage protect keys |
Dec. 28, 1982 |
| 4332009 |
Memory protection system |
May. 25, 1982 |
| 4148098 |
Data transfer system with disk command verification apparatus |
Apr. 3, 1979 |
| 4135240 |
Protection of data file contents |
Jan. 16, 1979 |
| 4104721 |
Hierarchical security mechanism for dynamically assigning security levels to object programs |
Aug. 1, 1978 |
| 4050060 |
Equate operand address space control system |
Sep. 20, 1977 |
| 4037215 |
Key controlled address relocation translation system |
Jul. 19, 1977 |
| 4035779 |
Supervisor address key control system |
Jul. 12, 1977 |
| 4017840 |
Method and apparatus for protecting memory storage location accesses |
Apr. 12, 1977 |
| 3976978 |
Method of generating addresses to a paged memory |
Aug. 24, 1976 |
| 3971916 |
Methods of data storage and data storage systems |
Jul. 27, 1976 |
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