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, 2004
Filed:
May. 17, 1999
Applicant:
Inventors:
Thomas Sean Houlihane, Cambridge, GB;
Andrew Gordon Summers, Cambridge, GB;
Assignee:
SchlumbergerSema Inc., Alpharetta, GA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08C 1/920 ;
U.S. Cl.
CPC ...
G08C 1/920 ;
Abstract
A transmitter to transmit data from an end-point includes a reference oscillator; a low pass filter coupled to the reference oscillator; a modulation filter to provide an over-sampled modulated signal; a synthesizer coupled to the low pass filter and the modulation filter; and a sine wave generator coupled to the synthesizer.