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. 12, 1992
Filed:
Dec. 28, 1990
Applicant:
Inventor:
Joseph D Remson, San Jose, CA (US);
Assignee:
ROLM Systems, Santa Clara, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M / ;
U.S. Cl.
CPC ...
341 68 ; 375 18 ; 307268 ; 307360 ; 341 57 ; 341 73 ;
Abstract
The apparatus converts an AMI signal into three unipolar signals by selectively amplifying the AMI signals so that higher frequency components are amplified greater than lower components and then comparing the AMI signal with a positive and negative threshold to provide a first unipolar signal having information relating to positive levels of said AMI signal, a second unipolar signal having information relating to negative levels of said AMI signal and a Or gate for combining said first and second signals to provide a third signal having information related to both positive and negative levels.