Inventor · disambiguated record
Daniel Alan Berkram
Also filed as: BERKRAM DANIEL A · BERKRAM DANIEL ALAN
39 granted patents·6 pending applications·179 citations·filing 2001–2022
97Inventor score
Files withHEWLETT PACKARD ENTPR DEV LP15HEWLETT PACKARD DEVELOPMENT CO14ZHOU DACHENG9BERKRAM DANIEL A3HENRION CARSON D1
Top patents by PatentIndex Score
45 records- 0199US10491302B1Rack-level photonic solutionHEWLETT PACKARD ENTPR DEV LP·Filed 2018·Granted Nov 26, 2019·59 cites·17 claims
- 0289US11196593B1Feedback circuit for a decision feedback equalizerHEWLETT PACKARD ENTPR DEV LP·Filed 2020·Granted Dec 7, 2021·3 cites·20 claims
- 0386US11581949B1Transition-based, nonlinear equalization for optical transmissionHEWLETT PACKARD ENTPR DEV LP·Filed 2021·Granted Feb 14, 2023·2 cites·20 claims
- 0485US8966353B2Receiver with tap-coefficient adjustmentsZHOU DACHENG·Filed 2011·Granted Feb 24, 2015·10 cites·19 claims
- 0584US10623101B1Hyperscale photonics connectivity solutionHEWLETT PACKARD ENTPR DEV LP·Filed 2018·Granted Apr 14, 2020·4 cites·17 claims
- 0683US8879616B2Receiver with decision feedback equalizerZHOU DACHENG·Filed 2011·Granted Nov 4, 2014·8 cites·20 claims
- 0783US6963236B2Method and apparatus for generating and controlling a quadrature clockHEWLETT PACKARD DEVELOPMENT CO·Filed 2003·Granted Nov 8, 2005·22 cites·20 claims
- 0881US9166367B2Operating vertical-cavity surface-emitting lasersZHU ZHUBIAO·Filed 2012·Granted Oct 20, 2015·7 cites·14 claims
- 0977US7567097B2Pre-driver circuit and appparatus using sameHEWLETT PACKARD DEVELOPMENT CO·Filed 2007·Granted Jul 28, 2009·7 cites·8 claims
- 1076US11114820B2Push-pull circuit with driving assisted by asymmetric charge sharingHEWLETT PACKARD ENTPR DEV LP·Filed 2018·Granted Sep 7, 2021·2 cites·14 claims
- 1172US8867925B2Reducing electrical current of a signal driver for an optical transmitterZHOU DACHENG·Filed 2012·Granted Oct 21, 2014·3 cites·14 claims
- 1271US7977981B2Pre-driver circuit using transistors of a single channel typeHEWLETT PACKARD DEVELOPMENT CO·Filed 2009·Granted Jul 12, 2011·5 cites·18 claims
- 1371US7081783B2Method and apparatus for generating and controlling a multiphase clockHEWLETT PACKARD DEVELOPMENT CO·Filed 2005·Granted Jul 25, 2006·6 cites·21 claims
- 1465US10389342B2ComparatorHEWLETT PACKARD ENTPR DEV LP·Filed 2017·Granted Aug 20, 2019·1 cites·19 claims
- 1564US7521972B2Fifty percent duty cycle clock divider circuit and methodHEWLETT PACKARD DEVELOPMENT CO·Filed 2007·Granted Apr 21, 2009·4 cites·20 claims
- 1664US6917232B2Method and apparatus for generating a quadrature clockHEWLETT PACKARD DEVELOPMENT CO·Filed 2003·Granted Jul 12, 2005·11 cites·20 claims
- 1762US12418157B2VCSEL equalization techniques for high speed optical transmissionHEWLETT PACKARD ENTPR DEV LP·Filed 2021·Granted Sep 16, 2025·0 cites·8 claims
- 1862US10491428B2Current supply for an opto-electronic deviceHEWLETT PACKARD ENTPR DEV LP·Filed 2018·Granted Nov 26, 2019·1 cites·17 claims
- 1961US7075351B2Method and apparatus for generating a multiphase clockHEWLETT PACKARD DEVELOPMENT CO·Filed 2005·Granted Jul 11, 2006·4 cites·21 claims
- 2058US7715251B2Memory access strobe configuration system and processHEWLETT PACKARD DEVELOPMENT CO·Filed 2006·Granted May 11, 2010·3 cites·2 claims
- 2156US6718498B2Method and apparatus for the real time manipulation of a test vector to access the microprocessor state machine information using the integrated debug triggerHEWLETT PACKARD DEVELOPMENT CO·Filed 2001·Granted Apr 6, 2004·8 cites·20 claims
- 2255US7816975B2Circuit and method for bias voltage generationHEWLETT PACKARD DEVELOPMENT CO·Filed 2005·Granted Oct 19, 2010·3 cites·26 claims
- 2354US10791385B2Optical to electrical conversion moduleHEWLETT PACKARD ENTPR DEV LP·Filed 2018·Granted Sep 29, 2020·0 cites·19 claims
- 2454US9515628B2Open-gain trans-impedance amplifier with programmable input impedanceZHOU DACHENG·Filed 2012·Granted Dec 6, 2016·1 cites·18 claims
- 2554US9413305B2Feedback-based trans-impedance amplifier with programmable input impedanceZHOU DACHENG·Filed 2012·Granted Aug 9, 2016·1 cites·12 claims
- 2654US8031819B2Systems and methods for synchronizing an input signalHEWLETT PACKARD DEVELOPMENT CO·Filed 2006·Granted Oct 4, 2011·2 cites·19 claims
- 2751US9300304B2Self-biased delay locked loop with delay linearizationBERKRAM DANIEL A·Filed 2012·Granted Mar 29, 2016·1 cites·15 claims
- 2848US10901933B2Programmable link training sequencesHEWLETT PACKARD ENTPR DEV LP·Filed 2019·Granted Jan 26, 2021·0 cites·16 claims
- 2947US10484089B1Driver assisted by charge sharingHEWLETT PACKARD ENTPR DEV LP·Filed 2018·Granted Nov 19, 2019·0 cites·20 claims
- 3045US10389555B2Phase delay difference-based channel compensationHEWLETT PACKARD ENTPR DEV LP·Filed 2016·Granted Aug 20, 2019·0 cites·15 claims
- 3144US12003279B2Common-mode current adjustment in a receiverHEWLETT PACKARD ENTPR DEV LP·Filed 2022·Granted Jun 4, 2024·0 cites·18 claims
- 3244US10153611B2Termination voltage circuitsHEWLETT PACKARD ENTPR DEV LP·Filed 2015·Granted Dec 11, 2018·0 cites·13 claims
- 3343US8798126B2Receiver calibration using offset-data error ratesZHOU DACHENG·Filed 2011·Granted Aug 5, 2014·0 cites·15 claims
- 3442US11177877B2Data transfer between electrical-optical devicesHEWLETT PACKARD ENTPR DEV LP·Filed 2019·Granted Nov 16, 2021·0 cites·20 claims
- 3542US7518418B1Ratio granularity clock divider circuit and methodHEWLETT PACKARD DEVELOPMENT CO·Filed 2007·Granted Apr 14, 2009·0 cites·21 claims
- 3642US2015050029A1Operating vertical-cavity surface-emitting lasersZHOU DACHENG·Filed 2012·Application pending·0 cites
- 3741US9461813B2Optical data interface with electrical forwarded clockBERKRAM DANIEL A·Filed 2012·Granted Oct 4, 2016·0 cites·9 claims
- 3841US8829735B2Low frequency restorationZHOU DACHENG·Filed 2011·Granted Sep 9, 2014·0 cites·15 claims
- 3939US2015180582A1Trans-impedance amplifiers (tia) thermally isolated from optical modulesZHOU DACHENG·Filed 2012·Application pending·0 cites
- 4037US2014029935A1Indicating a synchronization point between a transmitter and a receiver of an optical linkREGAN JAMES DONALD·Filed 2012·Application pending·0 cites
- 4136US8391432B2Data serializerHENRION CARSON D·Filed 2005·Granted Mar 5, 2013·0 cites·10 claims
- 4236US7317778B2Phase-locked loop control circuitHEWLETT PACKARD DEVELOPMENT CO·Filed 2003·Granted Jan 8, 2008·1 cites·21 claims
- 4335US2005144580A1Method and system for testing a logic designFiled 2003·Application pending·0 cites
- 4435US2016087400A1Operating vertical-cavity surface-emitting lasersHEWLETT PACKARD DEVELOPMENT CO·Filed 2015·Application pending·0 cites
- 4534US2015155686A1Operating vertical-cavity surface-emitting lasersBERKRAM DANIEL A·Filed 2012·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →