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. 18, 1986
Filed:
Dec. 29, 1982
Applicant:
Inventor:
Kurt H Mueller, Wallisellen, CH;
Assignee:
GRETAG Aktiengesellschaft, Regensdorf, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04K / ; H04L / ;
U.S. Cl.
CPC ...
178 2217 ; 178 2213 ;
Abstract
A decoding system containing a synchronizing and entry detector rendering possible the phase-in of messages delayed, for example, by interference. In order to be able to decode parts of the message received prior to phase-in, the cipher is stored intermediately from the onset of reception in a memory. Following the completion of the transmission, the decoding generator is set to an initial state corresponding to the phase-in and operated in the inverse direction from there. Simultaneously the intermediately stored cipher is called up in an inversed order from the memory and decoded with the key pulse sequence of the decoding generator.