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:
Jun. 07, 1994
Filed:
Apr. 28, 1993
Applicant:
Inventor:
Daniel Amrany, Wayside, NJ (US);
Assignee:
AT&T Bell Laboratories, Murray Hill, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
36472419 ;
Abstract
A high-speed digital filter with a large dynamic range is constructed by operating two low-resolution filters in parallel, which is referred to as an 'overlap' mode of operation. In this overlap mode of operation, both low-resolution adaptive filters operate on the input data simultaneously, however, the characteristics of both filters are controlled so that one filter performs a coarse level of filtering, while the other filter performs a finer level of filtering and also removes any errors introduced by the first filter. Some application examples include echo canceling, equalization, and deghosting filters.