Inventor · disambiguated record
Daniel Keyes Butterfield
Also filed as: BUTTERFIELD DANIEL · BUTTERFIELD DANIEL K · BUTTERFIELD DANIEL KEYES
11 granted patents·3 pending applications·660 citations·filing 1990–2019
91Inventor score
Top patents by PatentIndex Score
14 records- 0198US5142278ACurrent carrier tractor-trailer data linkQUALCOMM INC·Filed 1990·Granted Aug 25, 1992·266 cites·17 claims
- 0297US6005506AReceiver with sigma-delta analog-to-digital converter for sampling a received signalQUALCOMM INC·Filed 1997·Granted Dec 21, 1999·257 cites·38 claims
- 0392US9520906B2Switched capacitor transmitter circuits and methodsQUALCOMM INC·Filed 2015·Granted Dec 13, 2016·10 cites·19 claims
- 0491US9531409B2Switched capacitor transmitter circuits and methodsQUALCOMM INC·Filed 2015·Granted Dec 27, 2016·10 cites·18 claims
- 0584US10250417B1Serial link adaptive equalization using track and hold circuitsQUALCOMM INC·Filed 2018·Granted Apr 2, 2019·4 cites·30 claims
- 0683US6184812B1Method and apparatus for eliminating clock jitter in continuous-time Delta-Sigma analog-to-digital convertersQUALCOMM INC·Filed 1998·Granted Feb 6, 2001·53 cites·40 claims
- 0779US10338201B2Timing synchronization of LIDAR system to reduce interferenceQUALCOMM INC·Filed 2016·Granted Jul 2, 2019·4 cites·15 claims
- 0874US6321075B1Hardware-efficient transceiver with delta-sigma digital-to-analog converterQUALCOMM INC·Filed 1998·Granted Nov 20, 2001·50 cites·62 claims
- 0971US7969242B2Switching power amplifier for quantized signalsQUALCOMM INC·Filed 2008·Granted Jun 28, 2011·6 cites·45 claims
- 1049US10749481B2Supply compensated delay cellQUALCOMM INC·Filed 2018·Granted Aug 18, 2020·0 cites·26 claims
- 1141US8493145B2Switching power amplifier for quantized signalsGARUDADRI HARINATH·Filed 2011·Granted Jul 23, 2013·0 cites·32 claims
- 1241US2019053725A1Neural signal data captureQUALCOMM INC·Filed 2017·Application pending·0 cites
- 1340US2019247618A1Wireless guidewireQUALCOMM INC·Filed 2019·Application pending·0 cites
- 1437US2015085902A1RFDAC Transmitter Using Multiphase Image Select FIR DAC and Delta Sigma Modulator with Multiple Rx Band NTF ZerosQUALCOMM INC·Filed 2013·Application pending·0 cites
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