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:
Jan. 10, 1978
Filed:
May. 14, 1976
Andrew Werth, Silver Spring, MD (US);
Harold Lieberman, Jefferson, MD (US);
Digital Communications Corporation, Gaithersburg, MD (US);
Abstract
An in band single channel per carrier supervisory and signalling apparatus and method is disclosed for satellite communications. The apparatus includes a near supervisory interface located at a transmitting terminal, and a far supervisory interface located at a receiving terminal. The near supervisory interface responds to either dc or single tone conventional signalling on a sending telephone line and formats hook status and dial pulse transitions for in band transmission. The far supervisory interface responds to the messages, as formatted by the near supervisory interface and, re-formats the information thus communicated for the receiving telephone system.