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. 20, 1992
Filed:
Jan. 18, 1990
Mitchell L Loeb, Durham, NC (US);
George R Stilwell, Jr, Raleigh, NC (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Described are a technique and an apparatus for deskewing data transmitted via a dispersive medium such as a fiber optic link. The relative delays in arrival time for a plurality of bits, propagated in separate channels are measured. The relative delays are used to calculate the wavelength (.lambda.) of one channel and the zero dispersion wavelength (.lambda..sub.0) of the medium. The relative delays in arrival times for the remaining bits in a group of bits are predicted using the measured relative delays, the spacing (.delta.) between the transmitters and the calculated wavelengths. An adjustable delay for storing data bits is provided in each channel. The relative delays are used to deskew the individual bits.