Inventor · disambiguated record
David L. Simpson
Also filed as: SIMPSON DAVID L · SIMPSON DAVID LEON · SIMPSON JR DAVID L
19 granted patents·579 citations·filing 1989–2006
95Inventor score
Top patents by PatentIndex Score
19 records- 0195US5423050AIntermodule test across system bus utilizing serial test busNCR CORP·Filed 1994·Granted Jun 6, 1995·124 cites·5 claims
- 0292US7468754B2High-definition de-interlacing and frame doubling circuit and methodTHOMSON LICENSING·Filed 2005·Granted Dec 23, 2008·19 cites·6 claims
- 0392US5325368AJTAG component description via nonvolatile memoryNCR CO·Filed 1991·Granted Jun 28, 1994·102 cites·8 claims
- 0484US5343478AComputer system configuration via test busNCR CO·Filed 1991·Granted Aug 30, 1994·65 cites·10 claims
- 0583US5260950ABoundary-scan input circuit for a reset pinNCR CO·Filed 1991·Granted Nov 9, 1993·44 cites·16 claims
- 0680US5377198AJTAG instruction error detectionNCR CORP NKA AT & T GLOBAL INF·Filed 1991·Granted Dec 27, 1994·54 cites·8 claims
- 0771USRE41496EBoundary-scan input circuit for a reset pinSIMPSON DAVID L·Filed 2006·Granted Aug 10, 2010·6 cites·32 claims
- 0866US6894726B2High-definition de-interlacing and frame doubling circuit and methodTHOMSON LICENSING SA·Filed 2002·Granted May 17, 2005·19 cites·10 claims
- 0964US5313470ABoundary-scan input cell for a clock pinNCR CO·Filed 1991·Granted May 17, 1994·24 cites·16 claims
- 1064US5260948ABidirectional boundary-scan circuitNCR CO·Filed 1993·Granted Nov 9, 1993·27 cites·19 claims
- 1159US5267191AFIFO memory systemNCR CO·Filed 1989·Granted Nov 30, 1993·24 cites·34 claims
- 1254US5319646ABoundary-scan output cell with non-critical enable pathNCR CO·Filed 1991·Granted Jun 7, 1994·18 cites·3 claims
- 1353US6741436B2Microprocessor-controlled DC to DC converter with fault protectionDAIMLER CHRYSLER CORP·Filed 2001·Granted May 25, 2004·14 cites·12 claims
- 1452US6839779B2Counting a number of occurrences of a first RTS (ready to send) and a first RTR (ready to receive) signals for limiting a data transfer bandwidth through handshake suppressionTHOMSON LICENSING SA·Filed 2002·Granted Jan 4, 2005·3 cites·11 claims
- 1549US5432854AStereo FM receiver, noise control circuit thereforCHRYSLER CORP·Filed 1994·Granted Jul 11, 1995·23 cites·9 claims
- 1644US7031206B2Digital line delay using a single port memoryTHOMSON LICENSING·Filed 2002·Granted Apr 18, 2006·0 cites·15 claims
- 1743US5347520ABoundary-scan enable cell with non-critical enable pathNCR CO·Filed 1991·Granted Sep 13, 1994·11 cites·3 claims
- 1831US5546592ASystem and method for incrementing memory addresses in a computer systemNCR CORP·Filed 1989·Granted Aug 13, 1996·2 cites·21 claims
- 1930US4933894ACircuit and method for adding binary numbers with a difference of one or lessNCR CO·Filed 1989·Granted Jun 12, 1990·0 cites·23 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →