Patents by Inventor John Perzow
John Perzow has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 9189043Abstract: Power over Ethernet (PoE) communication systems provide power and data communications over the same communications link, where a power source device (PSE) provides DC power to a powered device (PD). The DC power is transmitted simultaneously over the same communications medium with the high speed data from one node to the other node. The PSE controller measures the voltage, current, and temperature of the outgoing and incoming DC supply lines to characterize the power requirements of the PD. The PSE controller may detect and validate a compatible PD, determine a power classification signature for the validated PD, supply power to the PD, monitor the power, and reduce or remove the power from the PD when the power is no longer requested or required. If the PSE finds the PD to be non-compatible, the PSE can prevent the application of power to that PD device, protecting the PD from possible damage.Type: GrantFiled: March 22, 2013Date of Patent: November 17, 2015Assignee: Broadcom CorporationInventors: Pieter Vorenkamp, Agnes Woo, Anil Tammineedi, Ichiro Fujimori, David Chin, John Perzow
-
Patent number: 8782442Abstract: An apparatus and method for multi-point detection in a power source equipment (PSE) device is provided. During multi-point detection, a series of at least four currents is sequentially applied to a link port of the PSE device. Each current is applied during a different measurement interval. A voltage measurement sample is obtained for each of the measurement intervals. A difference in voltage between alternating voltage samples is determined and used by a detection module to determine whether a valid power device is coupled to the link port of the PSE.Type: GrantFiled: April 5, 2010Date of Patent: July 15, 2014Assignee: Broadcom CorporationInventors: Agnes Woo, Anil Tammineedi, Ichiro Fujimori, David Chin, John Perzow
-
Patent number: 8432142Abstract: Power over Ethernet (PoE) communication systems provide power and data communications over the same communications link, where a power source device (PSE) provides DC power (for example, 48 volts DC) to a powered device (PD). The DC power is transmitted simultaneously over the same communications medium with the high speed data from one node to the other node. The PSE typically includes a controller that controls the DC power provided to the PD at the second node of the communications link. The PSE controller measures the voltage, current, and temperature of the outgoing and incoming DC supply lines to characterize the power requirements of the PD. In addition, the PSE controller may detect and validate a compatible PD, determine a power classification signature for the validated PD, supply power to the PD, monitor the power, and reduce or remove the power from the PD when the power is no longer requested or required.Type: GrantFiled: January 17, 2007Date of Patent: April 30, 2013Assignee: Broadcom CorporationInventors: Pieter Vorenkamp, Agnes Woo, Anil Tammineedi, Ichiro Fujimori, David Chin, John Perzow
-
Patent number: 8355409Abstract: A system and method of analyzing a powered device (PD) in a Power-over-Ethernet (PoE) system are presented. The system includes an Ethernet interface having a physical layer (PRY) chip capable of providing a signal pulse in addition to physical layer 1 functions. The system further includes a pulse transformer, coupled to the PRY chip, capable of relaying the signal pulse provided by the PRY chip to the PD via the transmit line and a second PRY chip. The first PRY chip receives one or more return pulse signals from the PD, analyzes characteristics such as voltage and/or frequency of the return pulse signal(s), and determines attributes of the PD based on those characteristics. The attributes can include powered device validity and power classification. A method of supplying power to a PD is also presented.Type: GrantFiled: December 30, 2011Date of Patent: January 15, 2013Assignee: Broadcom CorporationInventors: Asif Hussain, Manisha Pandya, Farzan Roohparvar, John Perzow
-
Publication number: 20120102341Abstract: A system and method of analyzing a powered device (PD) in a Power-over-Ethernet (PoE) system are presented. The system includes an Ethernet interface having a physical layer (PRY) chip capable of providing a signal pulse in addition to physical layer 1 functions. The system further includes a pulse transformer, coupled to the PRY chip, capable of relaying the signal pulse provided by the PRY chip to the PD via the transmit line and a second PRY chip. The first PRY chip receives one or more return pulse signals from the PD, analyzes characteristics such as voltage and/or frequency of the return pulse signal(s), and determines attributes of the PD based on those characteristics. The attributes can include powered device validity and power classification. A method of supplying power to a PD is also presented.Type: ApplicationFiled: December 30, 2011Publication date: April 26, 2012Applicant: Broadcom CorporationInventors: Asif HUSSAIN, Manisha Pandya, Farzan Roohparvar, John Perzow
-
Patent number: 8149858Abstract: A system and method of analyzing a powered device (PD) in a Power-over-Ethernet (PoE) system are presented. The system includes an Ethernet interface having a physical layer (PHY) chip capable of providing a signal pulse in addition to physical layer 1 functions. The system further includes a pulse transformer, coupled to the PHY chip, capable of relaying the signal pulse provided by the PHY chip to the PD via the transmit line and a second PHY chip. The first PHY chip receives one or more return pulse signals from the PD, analyzes characteristics such as voltage and/or frequency of the return pulse signal(s), and determines attributes of the PD based on those characteristics. The attributes can include powered device validity and power classification. A method of supplying power to a PD is also presented.Type: GrantFiled: March 27, 2007Date of Patent: April 3, 2012Assignee: Broadcom CorporationInventors: Asif Hussain, Manisha Pandya, Farzan Roohparvar, John Perzow
-
Patent number: 7936546Abstract: Power over Ethernet (PoE) communication systems provide power and data communications over the same communications link, where a power source device (PSE) provides DC power (for example, 48 volts DC) to a powered device (PD). The DC power is transmitted simultaneously over the same communications medium with the high speed data from one node to the other node. The PSE typically includes a controller that controls the DC power provided to the PD at the second node of the communications link. The PSE controller measures the voltage, current, and temperature of the outgoing and incoming DC supply lines to characterize the power requirements of the PD. In addition, the PSE controller may detect and validate a compatible PD, determine a power classification signature for the validated PD, supply power to the PD, monitor the power, and reduce or remove the power from the PD when the power is no longer requested or required.Type: GrantFiled: April 30, 2007Date of Patent: May 3, 2011Assignee: Broadcom CorporationInventors: Pieter Vorenkamp, Agnes Woo, Anil Tammineedi, Ichiro Fujimori, David Chin, John Perzow
-
Patent number: 7863871Abstract: Power over Ethernet (PoE) communication systems provide power and data communications over the same communications link, where a power source device (PSE) provides DC power (for example, 48 volts DC) to a powered device (PD). The DC power is transmitted simultaneously over the same communications medium with the high speed data from one node to the other node. The PSE typically includes a controller that controls the DC power provided to the PD at the second node of the communications link. The PSE controller measures the voltage, current, and temperature of the outgoing and incoming DC supply lines to characterize the power requirements of the PD. In addition, the PSE controller may detect and validate a compatible PD, determine a power classification signature for the validated PD, supply power to the PD, monitor the power, and reduce or remove the power from the PD when the power is no longer requested or required. The PSE controller also monitors for a Maintain Power Signature (MPS).Type: GrantFiled: April 30, 2007Date of Patent: January 4, 2011Assignee: Broadcom CorporationInventors: Pieter Vorenkamp, Agnes Woo, Anil Tammineedi, Ichiro Fujimori, David Chin, John Perzow
-
Publication number: 20100257381Abstract: An apparatus and method for multi-point detection in a power source equipment (PSE) device is provided. During multi-point detection, a series of at least four currents is sequentially applied to a link port of the PSE device. Each current is applied during a different measurement interval. A voltage measurement sample is obtained for each of the measurement intervals. A difference in voltage between alternating voltage samples is determined and used by a detection module to determine whether a valid power device is coupled to the link port of the PSE.Type: ApplicationFiled: April 5, 2010Publication date: October 7, 2010Applicant: BROADCOM CORPORATIONInventors: Agnes Woo, Anil Tammineedi, Ichiro Fujimori, David Chin, John Perzow
-
Patent number: 7711967Abstract: An apparatus and method for multi-point detection in a power source equipment (PSE) device is provided. During multi-point detection, a series of at least four currents is sequentially applied to a link port of the PSE device. Each current is applied during a different measurement interval. A voltage measurement sample is obtained for each of the measurement intervals. A difference in voltage between alternating voltage samples is determined and used by a detection module to determine whether a valid power device is coupled to the link port of the PSE.Type: GrantFiled: January 17, 2007Date of Patent: May 4, 2010Assignee: Broadcom CorporationInventors: Agnes Woo, Anil Tammineedi, Ichiro Fujimori, David Chin, John Perzow
-
Publication number: 20080175260Abstract: A system and method of analyzing a powered device (PD) in a Power-over-Ethernet (PoE) system are presented. The system includes an Ethernet interface having a physical layer (PHY) chip capable of providing a signal pulse in addition to physical layer 1 functions. The system further includes a pulse transformer, coupled to the PHY chip, capable of relaying the signal pulse provided by the PHY chip to the PD via the transmit line and a second PHY chip. The first PHY chip receives one or more return pulse signals from the PD, analyzes characteristics such as voltage and/or frequency of the return pulse signal(s), and determines attributes of the PD based on those characteristics. The attributes can include powered device validity and power classification. A method of supplying power to a PD is also presented.Type: ApplicationFiled: March 27, 2007Publication date: July 24, 2008Applicant: Broadcom CorporationInventors: Asif Hussain, Manisha Pandya, Farzan Roohparvar, John Perzow
-
Publication number: 20080040625Abstract: Power over Ethernet (PoE) communication systems provide power and data communications over the same communications link, where a power source device (PSE) provides DC power (for example, 48 volts DC) to a powered device (PD). The DC power is transmitted simultaneously over the same communications medium with the high speed data from one node to the other node. The PSE typically includes a controller that controls the DC power provided to the PD at the second node of the communications link. The PSE controller measures the voltage, current, and temperature of the outgoing and incoming DC supply lines to characterize the power requirements of the PD. In addition, the PSE controller may detect and validate a compatible PD, determine a power classification signature for the validated PD, supply power to the PD, monitor the power, and reduce or remove the power from the PD when the power is no longer requested or required. The PSE controller also monitors for a Maintain Power Signature (MPS).Type: ApplicationFiled: April 30, 2007Publication date: February 14, 2008Applicant: Broadcom CorporationInventors: Pieter Vorenkamp, Agnes Woo, Anil Tammineedi, Ichiro Fujimori, David Chin, John Perzow
-
Publication number: 20070206774Abstract: Power over Ethernet (PoE) communication systems provide power and data communications over the same communications link, where a power source device (PSE) provides DC power (for example, 48 volts DC) to a powered device (PD). The DC power is transmitted simultaneously over the same communications medium with the high speed data from one node to the other node. The PSE typically includes a controller that controls the DC power provided to the PD at the second node of the communications link. The PSE controller measures the voltage, current, and temperature of the outgoing and incoming DC supply lines to characterize the power requirements of the PD. In addition, the PSE controller may detect and validate a compatible PD, determine a power classification signature for the validated PD, supply power to the PD, monitor the power, and reduce or remove the power from the PD when the power is no longer requested or required.Type: ApplicationFiled: April 30, 2007Publication date: September 6, 2007Applicant: Broadcom CorporationInventors: Pieter Vorenkamp, Agnes Woo, Anil Tammineedi, Ichiro Fujimori, David Chin, John Perzow
-
Publication number: 20070170909Abstract: Power over Ethernet (PoE) communication systems provide power and data communications over the same communications link, where a power source device (PSE) provides DC power (for example, 48 volts DC) to a powered device (PD). The DC power is transmitted simultaneously over the same communications medium with the high speed data from one node to the other node. The PSE typically includes a controller that controls the DC power provided to the PD at the second node of the communications link. The PSE controller measures the voltage, current, and temperature of the outgoing and incoming DC supply lines to characterize the power requirements of the PD. In addition, the PSE controller may detect and validate a compatible PD, determine a power classification signature for the validated PD, supply power to the PD, monitor the power, and reduce or remove the power from the PD when the power is no longer requested or required.Type: ApplicationFiled: January 17, 2007Publication date: July 26, 2007Applicant: Broadcom CorporationInventors: Pieter Vorenkamp, Agnes Woo, Anil Tammineedi, Ichiro Fujimori, David Chin, John Perzow
-
Publication number: 20070165548Abstract: An apparatus and method for multi-point detection in a power source equipment (PSE) device is provided. During multi-point detection, a series of at least four currents is sequentially applied to a link port of the PSE device. Each current is applied during a different measurement interval. A voltage measurement sample is obtained for each of the measurement intervals. A difference in voltage between alternating voltage samples is determined and used by a detection module to determine whether a valid power device is coupled to the link port of the PSE.Type: ApplicationFiled: January 17, 2007Publication date: July 19, 2007Applicant: Broadcom CorporationInventors: Agnes Woo, Anil Tammineedi, Ichiro Fujimori, David Chin, John Perzow