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:
Apr. 25, 1995
Filed:
Oct. 13, 1992
Joseph W Lechleider, Morristown, NJ (US);
Bell Communications Research, Inc., Livingston, NJ (US);
Abstract
An impulse noise canceler includes circuitry which recognizes, locates, and cancels impulse noise when it occurs in an incoming signal. Impulse noise is characterized by a shape, an amplitude, and an arrival time, any or all of which may be unknown. In one implementation, adaptive circuitry is deployed to estimate the amplitude when it is the only unknown, and a replica of the impulse noise is generated and used to cancel the impulse noise in the incoming signal. In another implementation, both the arrival time and amplitude are estimated when they are unknowns, and a replica is again generated to cancel the original impulse noise. In yet another implementation, the shape, amplitude, and arrival time are all estimated of the impulse noise to produce the replica to cancel the original impulse noise.