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Patent applications and USPTO patent grants for Poonpol; Chanchai.The latest application filed is for "method and circuit for echo-cancellation in two-way communications".
Patent | Date |
---|---|
Method and circuit for echo-cancellation in two-way communications Grant 6,731,752 - Chaplik , et al. May 4, 2 | 2004-05-04 |
Portable communications and data terminal having multiple modes of operation Grant 6,434,395 - Lubin , et al. August 13, 2 | 2002-08-13 |
Method and apparatus for transmitting and receiving digital data over a bandpass channel Grant 6,175,599 - Lyon , et al. January 16, 2 | 2001-01-16 |
Method and apparatus for transmitting and receiving digital data over a bandpass channel Grant 5,838,727 - Lyon , et al. November 17, 1 | 1998-11-17 |
Method and apparatus for reducing multipath distortion Grant 5,257,265 - Su , et al. October 26, 1 | 1993-10-26 |
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