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. 13, 1992
Filed:
Mar. 20, 1990
Robert J Beyers, II, Snellville, GA (US);
Charles R Bramhall, Norcross, GA (US);
Gregory S Durden, Jonesboro, GA (US);
Robert J Edwards, Lawrenceville, GA (US);
Ray T Haman, Jr, Duluth, GA (US);
Douglas J Hoder, Lakewood, GA (US);
Donald R Huntley, Roswell, GA (US);
John A Kennedy, Doraville, GA (US);
Emory L McGinty, Jr, Lilburn, GA (US);
Jay C McMullan, Jr, Doraville, GA (US);
David J Naddor, Doraville, GA (US);
Randolph J Schaubs, Stone Mountain, GA (US);
Jesse M Still, Woodstock, GA (US);
Anthony J Wasilewski, Alpharetta, GA (US);
Lamar E West, Jr, Maysville, GA (US);
Donovan S White, Alpharetta, GA (US);
Scientific-Atlanta, Inc., Norcross, GA (US);
Abstract
Automatic level calibration apparatus for transmitting data from a cable television terminal to the headend of a cable television system comprises programmable transmitter apparatus of the terminal, programmable receiving apparatus at the headend and a calibration controller. Responsive to an addressed command from the headend, the programmable transmitter apparatus returns a sequence of levels at a particular calibration frequency. The programmable receiver apparatus determines an indication of the received signal strength of each of the levels of the sequence of levels. The controller determines an optimum level for transmissions from the terminal.