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:
Mar. 10, 1987
Filed:
Dec. 05, 1984
Jean Lassaux, Lannion, FR;
Henry Clement, Kermaria Sulard, FR;
Abstract
In an equipment for locating a reflection point in a transmission line a recording is obtained of the impulse response of the path of the echo produced by a transmission signal based on a reference signal x(n) constituted by binary sequences of duration NT which comprise only one bit of non-zero value. At the reception end, the equipment comprises a memory for storing N coefficients Ci which are read cyclically with a view to being modified by successive iterations, each coefficient being modified once per read cycle by the term .alpha..Sgn[e(n)], where Sgn[e(n)] is the sign of the difference between the signal received and the coefficient read at a moment NT and .alpha. is a constant less than 1. The coefficients modified and written into the memory form the values of the desired impulse response.