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:
Oct. 19, 1999
Filed:
Oct. 17, 1997
Applicant:
Inventors:
David Hartke, Durango, CO (US);
Joseph T DiBene, II, Oceanside, CA (US);
Assignee:
NCR Corporation, Dayton, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
332116 ; 326126 ; 375353 ; 375286 ;
Abstract
A Pulse Amplitude Modulation (PAM) generator that generates multilevel PAM signals at frequencies over 1 GHz is disclosed. The PAM generator uses Emitter Coupled Logic (ECL) technology that implements differential pair current switches such that the outputs are summed to produce precisely balanced PAM signals.