Number | Name | Date | Kind |
---|---|---|---|
3925618 | Kato et al. | Dec 1975 | A |
4378603 | Eastmond | Mar 1983 | A |
4887288 | Erving | Dec 1989 | A |
4979163 | Erving et al. | Dec 1990 | A |
5696819 | Suizu et al. | Dec 1997 | A |
5867574 | Eryilmaz | Feb 1999 | A |
5937060 | Oh | Aug 1999 | A |
6091937 | Uhlemann | Jul 2000 | A |
6157906 | Nicholls et al. | Dec 2000 | A |
6223154 | Nicholls et al. | Dec 2000 | B1 |
Entry |
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“Echo in Telephony Systems” Ericsson Echo Cancellers at http://www.ericsson.com/echo/edu/we.shtml pp. 1-4. |
“Digital Wireless Applications of E1 Echo Cancellers” Product Application Note, Tellabs, www.tellabs.com. |