| 54 |
Titel |
TI |
[EN] Transmission system comprising a sub-band echo canceller which includes a sub-band coding arrangement |
| 71/73 |
Anmelder/Inhaber |
PA |
PHILIPS CORP, US
|
| 72 |
Erfinder |
IN |
KELLERMANN WALTER, DE
|
| 22/96 |
Anmeldedatum |
AD |
16.12.1994 |
| 21 |
Anmeldenummer |
AN |
35932794 |
|
Anmeldeland |
AC |
US |
|
Veröffentlichungsdatum |
PUB |
19.03.1996 |
33
31
32 |
Priorität |
PRC
PRN
PRD |
DE
4227327
18.08.1992
|
33
31
32 |
PRC
PRN
PRD |
US
10600893
13.08.1993
|
| 51 |
IPC-Hauptklasse |
ICM |
H04L 23/00
|
| 51 |
IPC-Nebenklasse |
ICS |
H04J 1/00
H04M 1/24
|
|
IPC-Zusatzklasse |
ICA |
|
|
IPC-Indexklasse |
ICI |
|
|
Gemeinsame Patentklassifikation |
CPC |
H04B 3/21
H04B 7/015
|
|
MCD-Hauptklasse |
MCM |
H04B 3/20
(2006.01)
|
|
MCD-Nebenklasse |
MCS |
H04B 14/04
(2006.01)
H04B 3/21
(2006.01)
|
|
MCD-Zusatzklasse |
MCA |
|
| 57 |
Zusammenfassung |
AB |
[EN] Transmission system comprising a sub-band echo canceller which includes a sub-band coding arrangement. The invention relates to a transmission system comprising a sub-band echo canceller which includes a canceller that can be switched between a receive path (r) and a send path (s). To reduce the computational complexity as well as the signal delays also with sub-band coding or sub-band decoding, the sub-band coding arrangement comprises a synthesis filter bank and an analysis filter bank which are provided for sub-band coding and also for sub-band echo cancellation. Advantageous applications for the echo canceller are subscriber terminal units, for example, hands-free facilities for car telephones, videophones or video conference units which have an echo path formed by at least one microphone and at least one loudspeaker. |
| 56 |
Entgegengehaltene Patentdokumente/Zitate,
in Recherche ermittelt |
CT |
JP000H04123606A
US000004827472A
US000004979188A
US000005272695A
US000005297163A
US000005315585A
US000005448555A
|
| 56 |
Entgegengehaltene Patentdokumente/Zitate,
vom Anmelder genannt |
CT |
|
| 56 |
Entgegengehaltene Nichtpatentliteratur/Zitate,
in Recherche ermittelt |
CTNP |
Advances in Speech Signal Processing , by S. Fair and M. Sondhi, pp. 327 356. 0
|
| 56 |
Entgegengehaltene Nichtpatentliteratur/Zitate,
vom Anmelder genannt |
CTNP |
|
|
Zitierende Dokumente |
|
Dokumente ermitteln
|
|
Sequenzprotokoll |
|
|
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Prüfstoff-IPC |
ICP |
H04L 23/00
|
