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:
Mar. 24, 1992
Filed:
Jun. 29, 1990
Applicant:
Inventors:
Amar Gupta, Northboro, MA (US);
William R Hawe, Pepperell, MA (US);
Mark F Kempf, Stow, MA (US);
Ching S Lee, Ashland, MA (US);
Assignee:
Digital Equipment Corporation, Maynard, MA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04K / ;
U.S. Cl.
CPC ...
380 29 ; 380 49 ; 370 941 ; 370102 ; 370111 ;
Abstract
A method and corresponding apparatus for encoding and decoding additional status bits into an existing frame status byte transmitted as part of a packet of information in a communication network. The described scheme provides for the encoding and decoding of two additional status bits, without having to modify the packet format. In the disclosed embodiment of the invention, the additional status bits are used to convey information to a node processor concerning decryption processing of a received information packets.