Inventor · disambiguated record
David Cheng-Song Qi
Also filed as: QI DAVID CHENG-SONG
4 granted patents·21 citations·filing 2004–2004
71Inventor score
Files withCISCO TECH INC4
Top patents by PatentIndex Score
4 records- 0164US7609646B1Method and apparatus for eliminating false voice detection in voice band data serviceCISCO TECH INC·Filed 2004·Granted Oct 27, 2009·12 cites·40 claims
- 0254US7359489B2Method and apparatus for inclusive echo canceller testingCISCO TECH INC·Filed 2004·Granted Apr 15, 2008·5 cites·24 claims
- 0350US7583621B2Method and apparatus for suppressing echo cancelling in a packet switched networkCISCO TECH INC·Filed 2004·Granted Sep 1, 2009·3 cites·28 claims
- 0448US7646763B2Method and apparatus for improving voice band data (VBD) connectivity in a communications networkCISCO TECH INC·Filed 2004·Granted Jan 12, 2010·1 cites·24 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →