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. 25, 1986
Filed:
Jun. 02, 1982
Wernhard Markwitz, Munich, DE;
Siemens Aktiengesellschaft, Berlin & Munich, DE;
Abstract
A transmission code required for decoding an encoded transmission of messages between a transmitting station and a receiving station is first transmitted from one station to the other. Previously identified passwords are used to encode the transmission code, by the transmitting station, together with a transmission station code. At the receiving station, a code signal is decoded with the password and reencoded with a receiving station code and with an additional password. The transmitting station receives the encoded acknowledgement from the receiving station, decodes the acknowledgement using the second password, and its own station code, and reencodes it with a third password, transmitting the result back to the receiving station. The receiving station extracts the transmission code from the second transmission from the transmitting station, by decoding it with the receiving station's station code and the third password.