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:
Jan. 13, 1981
Filed:
May. 22, 1979
Applicant:
Inventors:
Lorne D O'Connor, Laval, CA;
Richard Saylor, Monsey, NY (US);
Stephen H Buckser, Hauppauge, NY (US);
Assignee:
American District Telegraph Company, Jersey City, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B / ; H04Q / ; H04M / ;
U.S. Cl.
CPC ...
3403 / ; 328120 ; 328 63 ; 3401 / ;
Abstract
A system for transmitting data from a transmitter to a receiver via an alternating current power line connecting the transmitter and receiver. The transmitter suppresses half cycles of the power signal, the suppressed half cycles being of alternating polarity. The data to be transmitted is represented by the time interval or number of power signal cycles between the suppressed half cycles.