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:
Jul. 07, 1992
Filed:
Jul. 23, 1991
Applicant:
Inventors:
Louis Caporizzo, North Wales, PA (US);
Clyde Robbins, Maple Glen, PA (US);
Daniel Marz, Dresher, PA (US);
Assignee:
General Instrument Corp., Hatboro, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ; H04B / ; H04H / ;
U.S. Cl.
CPC ...
455118 ; 455266 ; 455339 ; 455340 ; 455-62 ; 4551911 ; 358 86 ;
Abstract
The need for replacing the dedicated external output filter each time a different channel is selected is eliminated through the use of a switchable array of low and high pass filters which forms a filter circuit which may be varied for use with any channel. The band pass of the filter is selected in accordance with the selected channel number. The channel number is decoded to actuate RF relays which switch selected filters into the circuit.