Patents by Inventor Stefan Grefen
Stefan Grefen 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).
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Patent number: 11754432Abstract: Embodiments of systems and methods are provided to monitor operation of a compound water meter comprising a low flow meter and a high flow meter. In the disclosed embodiments, a first sensor package is coupled to the low flow meter to generate a first set of sensor data for monitoring operation of the low flow meter, and a second sensor package is coupled to the high flow meter to generate a second set of sensor data for monitoring operation of the high flow meter. The first and second sensor packages may each include, e.g., an optical sensor, a magnetic sensor and a vibration sensor. In the disclosed embodiments, the first and second sets of sensor data are analyzed to detect various potential problems within the compound water meter, such as a register failure, a crossover failure, a measurement failure, a bypass open condition and/or an incorrect flow meter size.Type: GrantFiled: January 21, 2021Date of Patent: September 12, 2023Assignee: Olea Networks, Inc.Inventors: David Mackie, Stefan Grefen, Corey James Boelter
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Publication number: 20220228901Abstract: Embodiments of systems and methods are provided to monitor operation of a compound water meter comprising a low flow meter and a high flow meter. In the disclosed embodiments, a first sensor package is coupled to the low flow meter to generate a first set of sensor data for monitoring operation of the low flow meter, and a second sensor package is coupled to the high flow meter to generate a second set of sensor data for monitoring operation of the high flow meter. The first and second sensor packages may each include, e.g., an optical sensor, a magnetic sensor and a vibration sensor. In the disclosed embodiments, the first and second sets of sensor data are analyzed to detect various potential problems within the compound water meter, such as a register failure, a crossover failure, a measurement failure, a bypass open condition and/or an incorrect flow meter size.Type: ApplicationFiled: January 21, 2021Publication date: July 21, 2022Inventors: David Mackie, Stefan Grefen, Corey James Boelter
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Patent number: 10805393Abstract: A system and method of recording data from a number of devices in a distributed network system in a manner adaptable for auditing the device output. The devices may include one or more control, sensor, edge, or peripheral computing devices physically separate in the distributed network system and in communication with a control server. Such distributed networks systems are common in SCADA or IoT applications. The content stream of data records output from the devices are recorded; a payload stripped stream of data records which are stripped of the payload are recorded and preferably retained by an escrow service. The metadata of the data records includes the hash value of one or more predecessor data records. The hash values are calculated based on the payload and a linkage function, preferably a cryptographic function. A comparison of hash values of the payload stripped stream and the content stream provides the audit ability.Type: GrantFiled: December 2, 2016Date of Patent: October 13, 2020Assignee: Olea Networks, Inc.Inventors: Stefan Grefen, Astrid Jaehde, David Mackie
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Patent number: 10408647Abstract: An infrastructure and methods for the analysis of flow in pipe systems. In a preferred form, the infrastructure and methods account for energy status of a sensor device and wear cost functions. The infrastructure comprises a controller and a plurality of sensor devices coupled to the pipe system to collect measurements related to one or more of the following: vibration, magnetic field, fluid pressure, temperature, humidity, chemical composition of the fluid, fluid flow or fluid throughput. The controller has access to a database containing one or both of—(i) current energy status of a sensor device and/or (ii) a cost allocation relating to use of a sensor device and assigns workloads using energy status and/or cost.Type: GrantFiled: February 15, 2017Date of Patent: September 10, 2019Assignee: Olea Networks, Inc.Inventors: David Mackie, Stefan Grefen, Corey James Boelter, Astrid Jaehde
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Patent number: 10353962Abstract: A technique that leads a surfer-equipment (SE) to switch to a lower bitrate is disclosed. The technique is implemented at an intermediate node between the SE and a domain. Leading the SE to switch to a lower bitrate is implemented by throttling one or more protocols each carried by one or more connections that carry packets of a multi-level-adaptive-bitrate (MLABR) media.Type: GrantFiled: April 29, 2016Date of Patent: July 16, 2019Assignee: Flash Networks, LtdInventors: Yosi Choen, Stefan Grefen, Adi Weiser, Yoav Weiss
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Patent number: 10302454Abstract: A retrofit device and method of installing such a device for supplementing a legacy flow meter in a fluid pipe system. The retrofit device enhances the function of the legacy flow meter by providing a digital interface and means for error diagnostics and tamper detection. The retrofit device adapts to the mechanical and casing form factor design of the legacy flow meter, particularly a flow meter already installed, such as buried in the ground.Type: GrantFiled: February 15, 2017Date of Patent: May 28, 2019Assignee: Olea Networks, Inc.Inventors: David Mackie, Stefan Grefen, Corey James Boelter, Astrid Jaehde
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Publication number: 20170234709Abstract: A retrofit device and method of installing such a device for supplementing a legacy flow meter in a fluid pipe system. The retrofit device enhances the function of the legacy flow meter by providing a digital interface and means for error diagnostics and tamper detection. The retrofit device adapts to the mechanical and casing form factor design of the legacy flow meter, particularly a flow meter already installed, such as buried in the ground.Type: ApplicationFiled: February 15, 2017Publication date: August 17, 2017Inventors: David Mackie, Stefan Grefen, Corey James Boelter, Astrid Jaehde
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Publication number: 20170238072Abstract: An infrastructure and methods for the analysis of flow in pipe systems. In a preferred form, the infrastructure and methods account for energy status of a sensor device and wear cost functions. The infrastructure comprises a controller and a plurality of sensor devices coupled to the pipe system to collect measurements related to one or more of the following: vibration, magnetic field, fluid pressure, temperature, humidity, chemical composition of the fluid, fluid flow or fluid throughput. The controller has access to a database containing one or both of—(i) current energy status of a sensor device and/or (ii) a cost allocation relating to use of a sensor device and assigns workloads using energy status and/or cost.Type: ApplicationFiled: February 15, 2017Publication date: August 17, 2017Inventors: David Mackie, Stefan Grefen, Corey James Boelter, Astrid Jaehde
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Publication number: 20170163733Abstract: A system and method of recording data from a number of devices in a distributed network system in a manner adaptable for auditing the device output. The devices may include one or more control, sensor, edge, or peripheral computing devices physically separate in the distributed network system and in communication with a control server. Such distributed networks systems are common in SCADA or IoT applications. The content stream of data records output from the devices are recorded; a payload stripped stream of data records which are stripped of the payload are recorded and preferably retained by an escrow service. The metadata of the data records includes the hash value of one or more predecessor data records. The hash values are calculated based on the payload and a linkage function, preferably a cryptographic function. A comparison of hash values of the payload stripped stream and the content stream provides the audit ability.Type: ApplicationFiled: December 2, 2016Publication date: June 8, 2017Inventors: Stefan Grefen, Astrid Jaehde, David Mackie
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Publication number: 20160323201Abstract: A technique that leads a surfer-equipment (SE) to switch to a lower bitrate is disclosed. The technique is implemented at an intermediate node between the SE and a domain. Leading the SE to switch to a lower bitrate is implemented by throttling one or more protocols each carried by one or more connections that carry packets of a multi-level-adaptive-bitrate (MLABR) media.Type: ApplicationFiled: April 29, 2016Publication date: November 3, 2016Applicant: Flash Networks, LtdInventors: Yosi Choen, Stefan Grefen, Adi Weiser, Yoav Weiss
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Patent number: 9042863Abstract: A method for communication includes recording, at a gateway to a network, a generic definition of a service provided to clients of the gateway. The generic definition specifies a first Uniform Resource Identifier (URI) on the network that is associated with the service. At least a first communication between a client and the network is processed at the gateway in order to identify at least a second URI that is referenced from the first URI in a context of the service. Responsively to at least the first communication, an extended definition of the service for the client is automatically created by adding at least the second URI to the generic definition. Use of the service is monitored by applying the extended definition to second communications conveyed by the gateway between the client and the network.Type: GrantFiled: February 13, 2014Date of Patent: May 26, 2015Assignee: Flash Networks Ltd.Inventors: Stefan Grefen, Yehuda Elmaliach
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Patent number: 8832709Abstract: A method for handling communication data involving identifying available resources for applying compression tasks and estimating a throughput reduction value to be achieved by applying each of a plurality of different compression tasks to a plurality of media items. A cost of applying the plurality of different compression tasks to the plurality of media items is estimated. The method further includes finding an optimization solution that maximizes the throughput reduction value over possible pairs of the compression tasks and the media items, while keeping the cost of the tasks of the solution within the identified available resources and providing instructions to apply compression tasks according to the optimization solution.Type: GrantFiled: July 18, 2011Date of Patent: September 9, 2014Assignee: Flash Networks Ltd.Inventors: Oded Noam, Ilan Daniel, Stefan Grefen, Ian Pattison
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Publication number: 20140160969Abstract: A method for communication includes recording, at a gateway to a network, a generic definition of a service provided to clients of the gateway. The generic definition specifies a first Uniform Resource Identifier (URI) on the network that is associated with the service. At least a first communication between a client and the network is processed at the gateway in order to identify at least a second URI that is referenced from the first URI in a context of the service. Responsively to at least the first communication, an extended definition of the service for the client is automatically created by adding at least the second URI to the generic definition. Use of the service is monitored by applying the extended definition to second communications conveyed by the gateway between the client and the network.Type: ApplicationFiled: February 13, 2014Publication date: June 12, 2014Applicant: Mobixell Networks Ltd.Inventors: Stefan Grefen, Yehuda Elmaliach
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Patent number: 8688074Abstract: A method for communication includes recording, at a gateway to a network, a generic definition of a service provided to clients of the gateway. The generic definition specifies a first Uniform Resource Identifier (URI) on the network that is associated with the service. At least a first communication between a client and the network is processed at the gateway in order to identify at least a second URI that is referenced from the first URI in a context of the service. Responsively to at least the first communication, an extended definition of the service for the client is automatically created by adding at least the second URI to the generic definition. Use of the service is monitored by applying the extended definition to second communications conveyed by the gateway between the client and the network.Type: GrantFiled: February 26, 2012Date of Patent: April 1, 2014Assignee: Moisixell Networks Ltd.Inventors: Stefan Grefen, Yehuda Elmaliach
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Publication number: 20120220261Abstract: A method for communication includes recording, at a gateway to a network, a generic definition of a service provided to clients of the gateway. The generic definition specifies a first Uniform Resource Identifier (URI) on the network that is associated with the service. At least a first communication between a client and the network is processed at the gateway in order to identify at least a second URI that is referenced from the first URI in a context of the service. Responsively to at least the first communication, an extended definition of the service for the client is automatically created by adding at least the second URI to the generic definition. Use of the service is monitored by applying the extended definition to second communications conveyed by the gateway between the client and the network.Type: ApplicationFiled: February 26, 2012Publication date: August 30, 2012Applicant: MOBIXELL NETWORKS LTD.Inventors: Stefan Grefen, Yehuda Elmaliach
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Publication number: 20120023504Abstract: A method for handling communication data involving identifying available resources for applying compression tasks and estimating a throughput reduction value to be achieved by applying each of a plurality of different compression tasks to a plurality of media items. A cost of applying the plurality of different compression tasks to the plurality of media items is estimated. The method further includes finding an optimization solution that maximizes the throughput reduction value over possible pairs of the compression tasks and the media items, while keeping the cost of the tasks of the solution within the identified available resources and providing instructions to apply compression tasks according to the optimization solution.Type: ApplicationFiled: July 18, 2011Publication date: January 26, 2012Applicant: MOBIXELL NETWORKS LTD.Inventors: Oded Noam, Ilan Daniel, Stefan Grefen, Ian Pattison