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. 25, 2011
Filed:
Aug. 01, 2008
Applicant:
Martin H. Graham, Berkeley, CA (US);
Inventor:
Martin H. Graham, Berkeley, CA (US);
Assignee:
And Yet, Inc., Berkeley, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H03K 7/04 (2006.01); H03K 7/08 (2006.01); H03K 9/04 (2006.01); H03K 9/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and apparatus is described for a time modulated signal. A cosine function is used as the basis for the signal with time intervals at the maximum and minimum values of the cosine function defining the encoded data. The received waveform is twice differentiated to provide a cosine function from which zero crossings are detected and the time intervals determined.