公开(公告)号：US10680836B1

公开(公告)日：2020-06-09

申请号：US16284400

申请日：2019-02-25

Applicant: Cisco Technology, Inc.

Inventor： Paolo Sironi ,  Sushin Suresan Adackaconam ,  Joel Goergen ,  Roberto Gianella

IPC: H04L12/10 ,  H02M1/32 ,  H01H83/10 ,  H01H83/22

Abstract: An apparatus comprises an Ethernet port including high-side transformers and low-side transformers. High-side current paths supply high-side currents form a high voltage rail to high-side center taps of the high-side transformers. Low-side current paths supply or do not supply low-side currents from a low voltage rail to low-side center taps of the low-side transformers, and convert the low-side currents to sense voltages. A controller configures the low-side current paths to either supply or not supply the low-side currents to the low-side center taps when none of the sense voltages exceed a voltage threshold representative of an overcurrent threshold or when at least one of the sense voltages exceeds the voltage threshold, respectively. A current monitor injects additional current into the low-side current paths only when at least one of the high-side currents exceeds the overcurrent threshold.

公开(公告)号：US20200274725A1

公开(公告)日：2020-08-27

申请号：US16861041

申请日：2020-04-28

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Paolo Sironi ,  Sushin Suresan Adackaconam ,  Joel Goergen ,  Roberto Gianella

IPC: H04L12/10 ,  H01H83/22 ,  H02M1/32 ,  H01H83/10

Abstract: An apparatus comprises an Ethernet port including high-side transformers and low-side transformers. High-side current paths supply high-side currents form a high voltage rail to high-side center taps of the high-side transformers. Low-side current paths supply or do not supply low-side currents from a low voltage rail to low-side center taps of the low-side transformers, and convert the low-side currents to sense voltages. A controller configures the low-side current paths to either supply or not supply the low-side currents to the low-side center taps when none of the sense voltages exceed a voltage threshold representative of an overcurrent threshold or when at least one of the sense voltages exceeds the voltage threshold, respectively. A current monitor injects additional current into the low-side current paths only when at least one of the high-side currents exceeds the overcurrent threshold.

公开(公告)号：US10476588B2

公开(公告)日：2019-11-12

申请号：US15952345

申请日：2018-04-13

Applicant: Cisco Technology, Inc.

Inventor： Maurizio Gazzola ,  Stefano Piciaccia ,  Lorenzo Ghioni ,  Ronald Johnson ,  Alberto Arnaldo Tanzi ,  Sushin Suresan Adackaconam

IPC: H04B10/075 ,  H04B10/073 ,  H04J14/02

Abstract: Techniques for automatic bandwidth optimization of an optical communication channel in an optical network are provided. In one embodiment, a method of automatically optimizing bandwidth includes receiving, at a first optical network element, a first signal transmission transmitted according to a first set of transmission parameters over an optical communication channel established between the first optical network element and a second optical network element. The method includes determining a first quality of signal parameter associated with the first signal transmission and determining whether the first quality of signal parameter is worse than a predetermined quality of signal value. Upon determining that the first quality of signal parameter is not worse than the predetermined value, the method further includes transmitting a second set of transmission parameters to the second optical network element to further optimize the bandwidth of the optical communication channel.

公开(公告)号：US11063774B2

公开(公告)日：2021-07-13

申请号：US16861041

申请日：2020-04-28

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Paolo Sironi ,  Sushin Suresan Adackaconam ,  Joel Goergen ,  Roberto Gianella

IPC: H04L12/10 ,  H02M1/32 ,  H01H83/10 ,  H01H83/22

Abstract: An apparatus comprises an Ethernet port including high-side transformers and low-side transformers. High-side current paths supply high-side currents form a high voltage rail to high-side center taps of the high-side transformers. Low-side current paths supply or do not supply low-side currents from a low voltage rail to low-side center taps of the low-side transformers, and convert the low-side currents to sense voltages. A controller configures the low-side current paths to either supply or not supply the low-side currents to the low-side center taps when none of the sense voltages exceed a voltage threshold representative of an overcurrent threshold or when at least one of the sense voltages exceeds the voltage threshold, respectively. A current monitor injects additional current into the low-side current paths only when at least one of the high-side currents exceeds the overcurrent threshold.

公开(公告)号：US20190319702A1

公开(公告)日：2019-10-17

申请号：US15952345

申请日：2018-04-13

Applicant: Cisco Technology, Inc.

Inventor： Maurizio Gazzola ,  Stefano Piciaccia ,  Lorenzo Ghioni ,  Ronald Johnson ,  Alberto Arnaldo Tanzi ,  Sushin Suresan Adackaconam

IPC: H04B10/075 ,  H04B10/073 ,  H04J14/02

Abstract: Techniques for automatic bandwidth optimization of an optical communication channel in an optical network are provided. In one embodiment, a method of automatically optimizing bandwidth includes receiving, at a first optical network element, a first signal transmission transmitted according to a first set of transmission parameters over an optical communication channel established between the first optical network element and a second optical network element. The method includes determining a first quality of signal parameter associated with the first signal transmission and determining whether the first quality of signal parameter is worse than a predetermined quality of signal value. Upon determining that the first quality of signal parameter is not worse than the predetermined value, the method further includes transmitting a second set of transmission parameters to the second optical network element to further optimize the bandwidth of the optical communication channel.