EP 0903012 A1 19990324 - METHOD AND APPARATUS FOR PERFORMING BANDEDGE EQUALIZATION
Title (en)
METHOD AND APPARATUS FOR PERFORMING BANDEDGE EQUALIZATION
Title (de)
VERFAHREN UND GERÄT ZUR ENTZERRUNG VON BANDKANTEN
Title (fr)
PROCEDE ET APPAREIL DE REGULARISATION D'UNE LIMITE DE BANDE DE FREQUENCES
Publication
Application
Priority
- US 9709200 W 19970605
- US 1930896 P 19960607
Abstract (en)
[origin: WO9747084A1] A method and apparatus for performing bandedge equalization. Specifically, the apparatus contains a pre-equalizer (300, 302) for adjusting the amplitudes of the bandedges of a broadband signal in response to a control signal. A bandedge filter (312, 314) is connected to the pre-equalizer (300, 302) and extracts a bandedge signal from the broadband signal. Lastly, a bandedge signal processor (315) that is connected to the bandedge filter (312, 314) generates the control signal in response to said bandedge signal. In this manner, when the bandedges of the broadband signal are asymmetric, the apparatus adjusts the signal strength of each bandedge with respect to one another to equalize (balance) the bandedges. The balanced signal can then be used by a bandedge timing recovery circuit. As such, the accuracy of a bandedge timing recovery circuit is not impacted by the asymmetric bandedges of the input signal.
IPC 1-7
IPC 8 full level
H03H 15/00 (2006.01); H03H 7/30 (2006.01); H03H 17/02 (2006.01); H03H 17/06 (2006.01); H04B 3/06 (2006.01); H04B 7/005 (2006.01); H04L 7/027 (2006.01); H04L 27/01 (2006.01); H04L 27/34 (2006.01)
CPC (source: EP KR)
H03H 7/30 (2013.01 - KR); H04L 7/0087 (2013.01 - EP); H04L 7/0278 (2013.01 - EP)
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
WO 9747084 A1 19971211; EP 0903012 A1 19990324; EP 0903012 A4 20011114; JP 3601646 B2 20041215; JP H10145269 A 19980529; KR 20000016323 A 20000325
DOCDB simple family (application)
US 9709200 W 19970605; EP 97928711 A 19970605; JP 18291897 A 19970605; KR 19980709896 A 19981204