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:
Jul. 29, 1980
Filed:
Feb. 22, 1978
Donald Kirk, Jr, St. Petersburg, FL (US);
Digital Communications, Inc., St. Petersburg, FL (US);
Abstract
A video multiplexing communications system for distributing two distinct video programs via a single satellite channel utilizes time division principles, transmitting alternating lines of video information for the two programs by a single frequency modulated carrier to increase FM carrier-to-noise, thereby also maintaining each video program signal-to-noise ratio above FM detection threshold. The alternating lines are compacted in time and occupy a substantial portion of the synchronizing pulse period of the video lines; one line is partially repeated to reduce spurious system transient responses upon inter-program line switching; and amplitude expansion/reduction may be employed to maintain a large FM carrier deviation.