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:
May. 10, 1994
Filed:
Oct. 23, 1992
William F Schreiber, Cambridge, MA (US);
Other;
Abstract
A 2-stage SS (spread-spectrum) system for transmitting a coded TV signal, said coded signal consisting of first components requiring near-perfect transmission and second components for which somewhat imperfect transmission is acceptable, wherein a first SS process is used to determine the relative SNR of the recovered said second components, wherein the output of said first SS process is added to said first components to form combined signals, wherein a second SS process operates on said combined signals and is used to nullify the effects of multipath in the transmission channel and/or establish a multistep threshold, wherein the output of said second stage is modulated on a carrier, and wherein a transmitter receives said modulated carrier and generates a transmission signal therefrom.