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. 06, 1990
Filed:
Sep. 12, 1988
James H Leveque, Ellicott City, MD (US);
AMAF Industries, Inc., Columbia, MD (US);
Abstract
Complex waveforms may be transmitted using Lincompex techniques by frequency shifting either the complex waveform, its envelope, or both, in order to ensure that the compressed complex waveform and the envelope signal are transmitted without any substantial overlap therebetween utilizing Lincompex techniques. Overlap between the compressed waveform and envelope prevents the proper demodulation of the complex waveform from the signal transmitted. Accordingly, the frequency shifting techniques utilized in the present application allow Lincompex techniques to be utilized with complex waveforms having both a large bandwidth and a large envelope bandwidth, for example, the waveforms generated by parallel tone or multi-tone digital data.