公开(公告)号：US11114820B2

公开(公告)日：2021-09-07

申请号：US16186822

申请日：2018-11-12

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Zhubiao Zhu ,  Clinton Harold Parker ,  Daniel Alan Berkram

IPC: H01S5/042 ,  H01S3/13 ,  H01S5/183 ,  H04B10/508 ,  H05B45/32

Abstract: A push-pull circuit for an opto-electronic device includes: an output node; a pull-up circuit that, in operation, controls a falling edge rate of an input signal to the opto-electronic device while sharing charge with the output node; and a pull-down circuit that, in operation, controls a rising edge rate of the input signal to the opto-electronic device while sharing charge with the output node.

公开(公告)号：US10484089B1

公开(公告)日：2019-11-19

申请号：US15965773

申请日：2018-04-27

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Zhubiao Zhu ,  Clinton Harold Parker ,  Daniel Alan Berkram

IPC: H04B10/50 ,  H04B10/58 ,  H04L25/03 ,  H04B10/079 ,  H03F1/32 ,  H03F1/22 ,  H05B41/32 ,  H03K3/26 ,  H03K7/06 ,  H03K3/37

Abstract: A device, including a switch configured to couple a current source with an output terminal upon receipt of a data signal, is provided. The device also includes a first variable capacitor coupled in parallel to the current source at a common node on a source terminal of the switch, wherein the first variable capacitor comprises multiple capacitive elements coupled in parallel and configured to be activated by a programmable signal, and wherein the programmable signal is selected to increase a charge transfer rate from an output terminal coupled to a load, when the switch is turned on. A system and a serial interface including the above device are also provided.

公开(公告)号：US20190334742A1

公开(公告)日：2019-10-31

申请号：US15965760

申请日：2018-04-27

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Clinton Harold Parker ,  Zhubiao Zhu ,  Daniel Alan Berkram

IPC: H04L25/02 ,  H03K17/06 ,  H03K17/687

Abstract: A device, including a first current supply configured to provide a bias current to a load and a main current supply having a source terminal coupled in parallel with the load and configured to reduce a current value to the load below the bias current, is provided. The device includes a termination resistor coupled in series with the source terminal of the main current supply and configured to receive current from the source terminal of the main current supply when the source terminal of the main current supply is activated. The device also includes an auxiliary current supply having a sink terminal coupled to the termination resistor at a common node, and configured to maintain the common node at common mode voltage when current flows from the source terminal of the main current supply to the sink terminal of the auxiliary current supply and through the termination resistor.

公开(公告)号：US20200153201A1

公开(公告)日：2020-05-14

申请号：US16186822

申请日：2018-11-12

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Zhubiao Zhu ,  Clinton Harold Parker ,  Daniel Alan Berkram

IPC: H01S5/042 ,  H01S5/183 ,  H01S5/06 ,  H01S3/13

Abstract: A push-pull circuit for an opto-electronic device includes: an output node; a pull-up circuit that, in operation, controls a falling edge rate of an input signal to the opto-electronic device while sharing charge with the output node; and a pull-down circuit that, in operation, controls a rising edge rate of the input signal to the opto-electronic device while sharing charge with the output node.

公开(公告)号：US20190334617A1

公开(公告)日：2019-10-31

申请号：US15965773

申请日：2018-04-27

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Zhubiao Zhu ,  Clinton Harold Parker ,  Daniel Alan Berkram

IPC: H04B10/079 ,  H04B10/50 ,  H04B10/58 ,  H04L25/03

Abstract: A device, including a switch configured to couple a current source with an output terminal upon receipt of a data signal, is provided. The device also includes a first variable capacitor coupled in parallel to the current source at a common node on a source terminal of the switch, wherein the first variable capacitor comprises multiple capacitive elements coupled in parallel and configured to be activated by a programmable signal, and wherein the programmable signal is selected to increase a charge transfer rate from an output terminal coupled to a load, when the switch is turned on. A system and a serial interface including the above device are also provided.