Inventor
BERKRAM DANIEL ALAN
US25 patents
⚠️ This page may combine multiple inventors who share the name “BERKRAM DANIEL ALAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HEWLETT PACKARD ENTPR DEV LP
13 patentsUS10491302B1Nov 26, 2019
Rack-level photonic solution
HEWLETT PACKARD ENTPR DEV LP59 citations97
US10623101B1Apr 14, 2020
Hyperscale photonics connectivity solution
HEWLETT PACKARD ENTPR DEV LP4 citations72
US11196593B1Dec 7, 2021
Feedback circuit for a decision feedback equalizer
HEWLETT PACKARD ENTPR DEV LP3 citations70
US11114820B2Sep 7, 2021
Push-pull circuit with driving assisted by asymmetric charge sharing
HEWLETT PACKARD ENTPR DEV LP2 citations70
US11581949B1Feb 14, 2023
Transition-based, nonlinear equalization for optical transmission
HEWLETT PACKARD ENTPR DEV LP2 citations68
US10389342B2Aug 20, 2019
Comparator
HEWLETT PACKARD ENTPR DEV LP1 citations60
US10491428B2Nov 26, 2019
Current supply for an opto-electronic device
HEWLETT PACKARD ENTPR DEV LP1 citations59
US10791385B2Sep 29, 2020
Optical to electrical conversion module
HEWLETT PACKARD ENTPR DEV LP0 citations52
US10484089B1Nov 19, 2019
Driver assisted by charge sharing
HEWLETT PACKARD ENTPR DEV LP0 citations49
US10389555B2Aug 20, 2019
Phase delay difference-based channel compensation
HEWLETT PACKARD ENTPR DEV LP0 citations48
US12418157B2Sep 16, 2025
VCSEL equalization techniques for high speed optical transmission
HEWLETT PACKARD ENTPR DEV LP0 citations47
US12003279B2Jun 4, 2024
Common-mode current adjustment in a receiver
HEWLETT PACKARD ENTPR DEV LP0 citations41
US10153611B2Dec 11, 2018
Termination voltage circuits
HEWLETT PACKARD ENTPR DEV LP0 citations41
HEWLETT PACKARD DEVELOPMENT CO
7 patentsUS7567097B2Jul 28, 2009
Pre-driver circuit and appparatus using same
HEWLETT PACKARD DEVELOPMENT CO7 citations74
US7977981B2Jul 12, 2011
Pre-driver circuit using transistors of a single channel type
HEWLETT PACKARD DEVELOPMENT CO5 citations63
US7521972B2Apr 21, 2009
Fifty percent duty cycle clock divider circuit and method
HEWLETT PACKARD DEVELOPMENT CO4 citations63
US7715251B2May 11, 2010
Memory access strobe configuration system and process
HEWLETT PACKARD DEVELOPMENT CO3 citations61
US8031819B2Oct 4, 2011
Systems and methods for synchronizing an input signal
HEWLETT PACKARD DEVELOPMENT CO2 citations60
US7518418B1Apr 14, 2009
Ratio granularity clock divider circuit and method
HEWLETT PACKARD DEVELOPMENT CO0 citations52
US7317778B2Jan 8, 2008
Phase-locked loop control circuit
HEWLETT PACKARD DEVELOPMENT CO1 citations50
ZHOU DACHENG
5 patentsUS8966353B2Feb 24, 2015
Receiver with tap-coefficient adjustments
ZHOU DACHENG10 citations83
US8879616B2Nov 4, 2014
Receiver with decision feedback equalizer
ZHOU DACHENG8 citations83
US8867925B2Oct 21, 2014
Reducing electrical current of a signal driver for an optical transmitter
ZHOU DACHENG3 citations61
US8798126B2Aug 5, 2014
Receiver calibration using offset-data error rates
ZHOU DACHENG0 citations48
US8829735B2Sep 9, 2014
Low frequency restoration
ZHOU DACHENG0 citations40