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:
Sep. 15, 1987
Filed:
Apr. 25, 1986
Applicant:
Inventor:
Dennis F Cullum, Leucadia, CA (US);
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
375 10 ; 375101 ; 324 / ;
Abstract
In equalizing a digital channel, impulses are applied to the channel input at the Nyquist rate. The channel response is sampled to determine its amplitude values of specified sampling times, and the amplitude values are converted into corresponding pulse duration signals. The pulse duration signals are applied to a time interval analyzer whereby the signal input durations are displayed in the form of a histogram showing the number of pulses of a given duration as a function of pulse duration. The time dispersion of the displayed pulse durations measures the intersymbol interference present, and is a measure of the quality of the equalization.