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:
Dec. 25, 2007
Filed:
Jan. 13, 2004
Applicant:
Mauro Cerisola, Turin, IT;
Inventor:
Mauro Cerisola, Turin, IT;
Assignee:
Avago Technologies Fiber IP ( Singapore) Pte Ltd., Singapore, SG;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/08 (2006.01); H04B 10/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
The power of a digital signal such as an optical data stream is set via digital-to-analog converter having a reference input for connection to a DC reference signal. The pilot tone is injected into the reference input of the digital-to-analog converter. In the place of a dual amplitude control (modulation current and pilot tone), the disclosed arrangement only requires a single control, thereby reducing cost, power consumption, microcontroller input/output activity, area occupation (PCB real estate) and failure rate.