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1. (WO2007003055) EDGE DETECTING FILTERS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/003055 International Application No.: PCT/CA2006/001101
Publication Date: 11.01.2007 International Filing Date: 06.07.2006
IPC:
H03K 5/1252 (2006.01) ,G01R 29/02 (2006.01) ,H04B 1/10 (2006.01) ,H04B 15/00 (2006.01) ,H04L 1/00 (2006.01)
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
K
PULSE TECHNIQUE
5
Manipulating pulses not covered by one of the other main groups in this subclass
125
Discriminating pulses
1252
Suppression or limitation of noise or interference
G PHYSICS
01
MEASURING; TESTING
R
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
29
Arrangements for measuring or indicating electric quantities not covered by groups G01R19/-G01R27/135
02
Measuring characteristics of individual pulses, e.g. deviation from pulse flatness, rise time or duration
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
B
TRANSMISSION
1
Details of transmission systems, not covered by a single one of groups H04B3/-H04B13/123; Details of transmission systems not characterised by the medium used for transmission
06
Receivers
10
Means associated with receiver for limiting or suppressing noise or interference
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
B
TRANSMISSION
15
Suppression or limitation of noise or interference
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1
Arrangements for detecting or preventing errors in the information received
Applicants:
BOGDAN, John, W. [CA/CA]; CA
Inventors:
BOGDAN, John, W.; CA
Priority Data:
2,510,82806.07.2005CA
Title (EN) EDGE DETECTING FILTERS
(FR) FILTRES DE DETECTION DES CONTOURS
Abstract:
(EN) This invention relates to an edge detecting filter (EDF) for recovering data carrying edges from a noisy received signal by dense over-sampling of the received signal and by detecting edge phases and edge amplitude limits wherein recovered signal amplitudes at sampling instance defining said edge phase are determined by said edge amplitude limits while recovered amplitudes assumed at sampling instances following the last edge detected are those implementing an ideal signal shape determined by the last edge. The EDF comprises a system for adaptive noise filtering which analyzes captured unfiltered portions of the over-sampled waveform in order to compensate predictable and/or random signal distortions and interferencies.
(FR) L'invention a pour objet un filtre de détection des contours (EDF) permettant de récupérer des données de contours à partir d'un signal reçu bruité par suréchantillonnage dense du signal reçu et par détection de phases de contours et de limites d'amplitude de contours, les amplitudes de signal récupérées au niveau de l'instance d'échantillonnage définissant ladite phase de contours, étant déterminées par lesdites limites d'amplitude de contours, tandis que les amplitudes récupérées présumées au niveau des instances d'échantillonnage succédant au dernier contour détecté, sont celles mettant en oeuvre une forme de signal idéale déterminée par le dernier contour. L'EDF comprend un système de filtrage de bruit adaptatif qui analyse des parties non filtrées capturées de la forme d'onde suréchantillonnée, pour compenser les distorsions et les interférences de signal prévisibles et/ou aléatoires.
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Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)