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. 07, 2003
Filed:
Apr. 14, 1999
Applicant:
Inventors:
George B. Hovorka, Rowley, MA (US);
Steven B. Leeb, Belmont, MA (US);
Deron Jackson, San Jose, CA (US);
Elmer C. Lupton, Boston, MA (US);
Assignee:
Talking Lights, Boston, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 1/010 ;
U.S. Cl.
CPC ...
H04B 1/010 ;
Abstract
Transceiver system including a transmitter and receiver. The transmitter transmits radiation having a varying operating frequency. It is preferred that the radiation be visible light. The operating frequency is varied in a way that eliminates visible flicker. A receiver receives the encoded radiation, decodes the coded data, and delivers the decoded data signal to an output stage. The output may be audio information textural information or graphical information. A two level coding scheme is preferred.