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:
Nov. 24, 1992
Filed:
May. 21, 1990
Peter G Baltus, Sunnyvale, CA (US);
Pieter S van der Meulen, Santa Clara, CA (US);
North American Philips Corporation, New York, NY (US);
Abstract
A data transmission system which provides differential transmission of a multi-level interface corresponding to a binary interface formed by a plurality of binary input signals. The binary interface is encoded by an encoder into a corresponding multi-level differential interface formed by a plurality of multi-level signals, such correspondence being in accordance with a pre-selected code conversion table, and the respective multi-level signals are transmitted over respective transmission channels. Upon reception at a decoder, the signs of the differences between respective pairs of the multi-level signals are detected, and in accordance with such signs binary values are assigned to respective binary output signals of the decoder in accordance with the inverse of the code conversion table employed for encoding. Differential transmission achieves immunity from common mode noise, and multi-level encoding requires fewer channels than would be necessary for binary differential transmission.