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. 05, 1988
Filed:
Jun. 05, 1987
Applicant:
Inventors:
Pil J Lee, Somerville, NJ (US);
Sang H Lee, Bridgewater, NJ (US);
Assignee:
Bell Communications Research, Inc., Livingston, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04J / ;
U.S. Cl.
CPC ...
370 77 ; 370 18 ; 375-1 ;
Abstract
Circuitry generates a plurality of differently-phased m-sequences (or pseudo-random sequences) for scrambling/descrambling of all tributary data signals at a multiplexer/demultiplexer. By scrambling/descrambling at the tributary levels and thus at the lower tributary clock rates, less complex circuitry can be employed, and by properly selecting the tributary scrambling sequences in accordance with the teachings of this invention, a desired high speed line sequence can be attained.