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.

Date of Patent:
Jan. 11, 2000

Filed:

Apr. 28, 1997
Applicant:
Inventors:

Louis Caporizzo, North Wales, PA (US);

Christine Johnson, Chalfont, PA (US);

Assignee:

General Instrument Corporation, Horsham, PA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04H / ; H04B / ; H04N / ; H04N / ;
U.S. Cl.
CPC ...
455-62 ; 348 10 ; 348 11 ; 348731 ; 455266 ; 4552341 ; 4551801 ; 4551881 ; 455307 ;
Abstract

A system for use with a CATV settop terminal measures the input RF carrier signal power level at several frequencies within the CATV RF input bandwidth upon system power-up. The system utilizes these measurements to selectively equalize and process the RF input signal depending upon the carrier frequency selected and the desired signal level to be input to the RF tuner. The system refines the signal level by specifically measuring the signal level of the selected carrier frequency. The system further improves RF tuner performance by dynamically limiting the bandwidth input to the RF tuner depending upon the selected carrier frequency.


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