EP 1116329 A1 20010718 - FREQUENCY DETECTION METHOD FOR CLOCK SIGNAL ADJUSTMENT AND FREQUENCY DETECTION CIRCUIT FOR IMPLEMENTING SAID METHOD
Title (en)
FREQUENCY DETECTION METHOD FOR CLOCK SIGNAL ADJUSTMENT AND FREQUENCY DETECTION CIRCUIT FOR IMPLEMENTING SAID METHOD
Title (de)
FREQUENZDETEKTIONSVERFAHREN ZUR TAKTSIGNALFREQUENZ-NACHSTELLUNG UND FREQUENZDETEKTORSCHALTUNG ZUR DURCHFÜHRUNG DES VERFAHRENS
Title (fr)
PROCEDE DE DETECTION DE FREQUENCE DESTINE A L'AJUSTEMENT D'UNE FREQUENCE DE SIGNAL D'HORLOGE ET CIRCUIT DE DETECTION DE FREQUENCE PERMETTANT DE METTRE EN OEUVRE LEDIT PROCEDE
Publication
Application
Priority
- DE 9902766 W 19990901
- DE 19844126 A 19980925
Abstract (en)
[origin: WO0019613A1] Frequency detection method for adjusting the clock signal frequency to the data rate of a received data signals, wherein the clock signal is previously divided by 4 and the received data signal are divided on a frequency basis with the same division factor, the frequencies of both frequency divided signals are determined through pulse-count processes and compared using a subtractor (10), wherein the determined frequency difference is converted into an analog output signal to regulate clock signal frequency. Said method can be used in data transmission.
IPC 1-7
IPC 8 full level
H03K 5/26 (2006.01); H03L 7/08 (2006.01); H03L 7/087 (2006.01); H03L 7/113 (2006.01); H04L 7/033 (2006.01); H03L 7/095 (2006.01)
CPC (source: EP US)
H03L 7/113 (2013.01 - EP US); H04L 7/033 (2013.01 - EP US); H03L 7/087 (2013.01 - EP US); H03L 7/095 (2013.01 - EP US)
Citation (search report)
See references of WO 0019613A1
Designated contracting state (EPC)
FR IT
DOCDB simple family (publication)
WO 0019613 A1 20000406; DE 19844126 C1 20000608; EP 1116329 A1 20010718; JP 2002526963 A 20020820; JP 3697158 B2 20050921; US 2001048348 A1 20011206; US 6362693 B2 20020326
DOCDB simple family (application)
DE 9902766 W 19990901; DE 19844126 A 19980925; EP 99953679 A 19990901; JP 2000573001 A 19990901; US 81784101 A 20010326