The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 24, 1991
Filed:
Dec. 23, 1987
Applicant:
Inventors:
Richard H Sherman, Fremont, CA (US);
George W Dinolt, San Jose, CA (US);
Frank Hubbard, Los Altos Hills, CA (US);
Assignee:
Loral Aerospace Corp., New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ; G06F / ; G06F / ;
U.S. Cl.
CPC ...
395650 ; 364230 ; 3642372 ; 36423782 ; 364243 ; 3642466 ; 364D / ;
Abstract
A computer workstation having a window output display for potential use in security-sensitive environments provides multilevel security by physical isolation of processes in predefined security levels, each process or like-classified group of processes is displayed only through a suitably labeled window, access to the window requiring access through a previously security qualified physical signal path. The invention does not compromise security by mixing a software-based security environment with other untested software. All security is hardware-based.