Issued Patents All Time
Showing 26–50 of 66 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6819749 | Method and apparatus for fast V.90 modem startup | Keith Chu, Burk Beadle | 2004-11-16 |
| 6785371 | Signaling mechanism for modem connection holding and reconnecting | — | 2004-08-31 |
| 6768791 | Method and apparatus for quick modem reconnect | Burk Beadle | 2004-07-27 |
| 6744819 | System and method for selecting a data transmission mode | Keith Chu | 2004-06-01 |
| 6731726 | Communication on hold | Yair Kerner, Iddit Shalem | 2004-05-04 |
| 6728308 | Extending symbol rates and symbol rate re-negotiation for facsimile modems | Keith Chu | 2004-04-27 |
| 6724870 | System and method for distributing enhanced telephony service to customer premises equipment | Michael Henderson | 2004-04-20 |
| 6721279 | Method and apparatus for adaptive PCM level estimation and constellation training | Xuming Zhang | 2004-04-13 |
| 6704399 | Quick connect parameter exchange | — | 2004-03-09 |
| 6693998 | Error correction and compression parameter exchange during modem training phase | — | 2004-02-17 |
| 6693992 | Line probe signal and method of use | William W. Jones, Shrenik P. Patravali, Ragnar H. Jonsson | 2004-02-17 |
| 6678375 | Efficient use of wire for data communication systems | P. Michael Henderson, Mickey C. Rushing, Joel D. Peshkin | 2004-01-13 |
| 6570932 | Calculation and verification of transmit power levels in a signal point transmission system | — | 2003-05-27 |
| 6504886 | Communication of an impairment learning sequence according to an impairment learning sequence descriptor | — | 2003-01-07 |
| 6480533 | Method and apparatus for receiving control signals in a data communication system having a fully digital communication channel | Keith Chu | 2002-11-12 |
| 6434233 | Method and apparatus for canceling periodic interference signals in a digital data communication system | Elias Bjarnason, Ragnar H. Jonsson, Adeline Tracz | 2002-08-13 |
| 6421375 | Method and apparatus for transmitting control signals in a data communication system having a fully digital communication channel | Keith Chu | 2002-07-16 |
| 6414989 | Upstream PCM transmission for a modem system | Olafur Jonsson | 2002-07-02 |
| 6414990 | Timing recovery for a high speed digital data communication system based on adaptive equalizer impulse response characteristics | Ragnar H. Jonsson, Elias Bjarnason | 2002-07-02 |
| 6359932 | Verification of transmit power levels in a signal point limited transmission system | — | 2002-03-19 |
| 6332009 | Method and apparatus for generating a line impairment learning signal for a data communication system | — | 2001-12-18 |
| 6317419 | Method and apparatus for training an echo canceler in a PCM modem context | Zhenyu Zhou | 2001-11-13 |
| 6278744 | System for controlling and shaping the spectrum and redundancy of signal-point limited transmission | Zhenyu Zhou, Xuming Zhang | 2001-08-21 |
| 6259742 | Methods and apparatus for optimizing shell mapping techniques using an approximated power cost function | Olafur Jonsson | 2001-07-10 |
| 6226334 | Methods and apparatus for implementing shell mapping techniques in the context of a PCM-based modem communication system | — | 2001-05-01 |