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:
Dec. 16, 1997
Filed:
Feb. 09, 1996
Oscar A Tovar, Plano, TX (US);
DSC Communications Corporation, Plano, TX (US);
Abstract
An adaptive cable equalizer (10) includes an input section (12) that receives a radio frequency electrical signal from a cable (14). The input section (12) provides the electrical signal to an equalizing amplifier section (16) that controls an amount of current flow of the electrical signal to an equalizing controller (18). The equalizing controller (18) generates an equalized output signal (21) through a voltage drop which is proportional to a roll-off distortion of the cable (14). The voltage drop is processed by an amplifier (80) and a line receiver (88) to reconstruct the electrical signal in a digital representation of the equalized output signal (21). The voltage drop is also fed to a detector (20) that generates a control signal (23) and a bias signal (25) to adjust the conductivity of the equalizing amplifier section (16). In this manner, adjustments are automatically made in order to provide the equalized output signal (21) regardless of the characteristics of the cable (14).