Inventor · disambiguated record
Darrel D. Donaldson
Also filed as: DONALDSON DARREL · DONALDSON DARREL D
19 granted patents·1,181 citations·filing 1979–2002
96Inventor score
Files withDIGITAL EQUIPMENT CORP11HEWLETT PACKARD DEVELOPMENT CO3NCR CO2DIGITAL ELECTRIC CORP1DIGITAL EQUIPMENT COMPANY1
Top patents by PatentIndex Score
19 records- 0196US6681282B1Online control of a multiprocessor computer systemHEWLETT PACKARD DEVELOPMENT CO·Filed 2000·Granted Jan 20, 2004·319 cites·47 claims
- 0294US4271487AStatic volatile/non-volatile ram cellNCR CO·Filed 1979·Granted Jun 2, 1981·67 cites·6 claims
- 0392US6711693B1Method for synchronizing plurality of time of year clocks in partitioned plurality of processors where each partition having a microprocessor configured as a multiprocessor backplane managerHEWLETT PACKARD DEVELOPMENT CO·Filed 2000·Granted Mar 23, 2004·96 cites·15 claims
- 0492US5297269ACache coherency protocol for multi processor computer systemDIGITAL EQUIPMENT COMPANY·Filed 1993·Granted Mar 22, 1994·299 cites·27 claims
- 0576US6826653B2Block data mover adapted to contain faults in a partitioned multiprocessor systemHEWLETT PACKARD DEVELOPMENT CO·Filed 2002·Granted Nov 30, 2004·29 cites·19 claims
- 0675US6668335B1System for recovering data in a multiprocessor system comprising a conduction path for each bit between processors where the paths are grouped into separate bundles and routed along different pathsHEWLETT PACKARD COMPANY L P·Filed 2000·Granted Dec 23, 2003·23 cites·20 claims
- 0775US5003467ANode adapted for backplane bus with default controlDIGITAL EQUIPMENT CORP·Filed 1987·Granted Mar 26, 1991·52 cites·8 claims
- 0867US4980854ALookahead bus arbitration system with override of conditional access grants by bus cycle extensions for multicycle data transfersDIGITAL EQUIPMENT CORP·Filed 1987·Granted Dec 25, 1990·38 cites·61 claims
- 0967US4922449ABackplane bus system including a plurality of nodesDIGITAL ELECTRIC CORP·Filed 1989·Granted May 1, 1990·40 cites·18 claims
- 1064US4774422AHigh speed low pin count bus interfaceDIGITAL EQUIPMENT CORP·Filed 1987·Granted Sep 27, 1988·33 cites·17 claims
- 1162US5034883ALockhead bus arbitration system with override of conditional access grants by bus cycle extensions for multicycle data transfersDIGITAL EQUIPMENT CORP·Filed 1990·Granted Jul 23, 1991·41 cites·20 claims
- 1256US5311081AData bus using open drain drivers and differential receivers together with distributed termination impedancesDIGITAL EQUIPMENT CORP·Filed 1992·Granted May 10, 1994·35 cites·35 claims
- 1356US4947368ALookahead bus arbitration system with override of conditional access grants by bus cycle extensions for multicycle data transfersDIGITAL EQUIPMENT CORP·Filed 1987·Granted Aug 7, 1990·23 cites·16 claims
- 1456US4527074AHigh voltage pass circuitNCR CO·Filed 1982·Granted Jul 2, 1985·10 cites·10 claims
- 1554US5111424ALookahead bus arbitration system with override of conditional access grants by bus cycle extensions for multicycle data transferDIGITAL EQUIPMENT CORP·Filed 1990·Granted May 5, 1992·28 cites·7 claims
- 1646US5229926APower supply interlock for a distributed power systemDIGITAL EQUIPMENT CORP·Filed 1992·Granted Jul 20, 1993·11 cites·14 claims
- 1746US5146563ANode with coupling resistor for limiting current flow through driver during overlap conditionDIGITAL EQUIPMENT CORP·Filed 1989·Granted Sep 8, 1992·14 cites·20 claims
- 1845US4829515AHigh performance low pin count bus interfaceDIGITAL EQUIPMENT CORP·Filed 1987·Granted May 9, 1989·14 cites·14 claims
- 1939US4837736ABackplane bus with default controlDIGITAL EQUIPMENT CORP·Filed 1987·Granted Jun 6, 1989·9 cites·7 claims
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