EP 1259955 A1 20021127 - METHOD AND APPARATUS FOR TRACKING THE PHASE OF A QUASI-PERIODIC SIGNAL
Title (en)
METHOD AND APPARATUS FOR TRACKING THE PHASE OF A QUASI-PERIODIC SIGNAL
Title (de)
VERFAHREN UND VORRICHTUNG ZUM NACHFÜHREN DER PHASE EINES FAST PERIODISCHEN SIGNALS
Title (fr)
PROCEDE ET APPAREIL POUR MESURER LA PHASE D'UN SIGNAL QUASI PERIODIQUE
Publication
Application
Priority
US 0005141 W 20000229
Abstract (en)
[origin: WO0203381A1] A method for tracking the phase of a quasi-periodic signal includes he steps of estimating the phase of the signal for frames during which the signal is periodic, monitoring the performance of the estimated phase with a closed-loop performance measure, and measuring the phase of the signal for frames during which the signal is periodic and performance of the estimated phase falls below a predefined threshold level. In estimating the phase, the initial phase value is set equal to the estimated final phase value of the previous frame if the previous frame was periodic. The initial phase value is set equal to a measured phase value of the previous frame if the previous frame was nonperiodic, or if the previous frame was periodic and performance of the estimated phase for the previous frame fell below the predefined threshold level. For frames during which the signal is nonperiodic, the phase of the signal is measured. An open-loop periodicity decision can be used to determine whether the signal is periodic for a given frame.
IPC 1-7
IPC 8 full level
G10L 11/00 (2006.01); G10L 19/005 (2013.01); G10L 19/02 (2013.01); G10L 19/04 (2013.01); G10L 25/48 (2013.01)
CPC (source: EP KR)
G10L 19/005 (2013.01 - KR); G10L 19/02 (2013.01 - EP KR); G10L 19/04 (2013.01 - KR); G10L 25/48 (2013.01 - EP)
Citation (search report)
See references of WO 0203381A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0203381 A1 20020110; AU 3385200 A 20020114; CN 1262991 C 20060705; CN 1437746 A 20030820; DE 60025471 D1 20060406; DE 60025471 T2 20060824; EP 1259955 A1 20021127; EP 1259955 B1 20060111; HK 1055834 A1 20040121; JP 2004502203 A 20040122; JP 4567289 B2 20101020; KR 100711040 B1 20070424; KR 20020081352 A 20021026
DOCDB simple family (application)
US 0005141 W 20000229; AU 3385200 A 20000229; CN 00819200 A 20000229; DE 60025471 T 20000229; EP 00912054 A 20000229; HK 03108079 A 20031107; JP 2002507369 A 20000229; KR 20027011075 A 20020823