Patents by Inventor David Lukofsky
David Lukofsky 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: 10320219Abstract: A dynamic power control circuit is provided. The control circuit can detect the presence of the external power source as well as detect one or more conditions of the device. For instance, the control circuit can detect a voltage difference between a first node coupling a first power output and a system circuit and a second node coupling a second power output and the batteries. The control circuit can also detect the activation or deactivation of the external power source. Based on the inputs, the control circuit can cause the controlled resistor to dynamically adjust a level of impedance between the first node and the second node. The controlled impedance between the first node and the second node enables the system circuit to dynamically utilize power supplied by the external power source as well as power supplied by the batteries.Type: GrantFiled: February 26, 2016Date of Patent: June 11, 2019Assignee: Microsoft Technology Licensing, LLCInventors: Jonathan Alan Dutra, Junius Mark Penny, David Carl Wyland, David Lukofsky, Agustya Ruchir Mehta
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Patent number: 10283883Abstract: In an electronic device having a compact form factor, a space-saving harness using bundled or ribbonized strands of micro-coaxial (micro-coax) cable may be utilized to provide signal and/or power interconnects between EMI-generating peripheral components and other components in the device such as those populated on circuit boards. Discrete wires are included in the harness to provide shielding to adjacent micro-coax conductors which may carry high speed signals such as MIPI (Mobile Industry Processor Interface) differential signal pairs and provide power and ground return paths. The discrete wires are subjected to fabrication processes during assembly of the micro-coax harness so that their outer diameters substantially match that of components in the micro-coax cable to thereby facilitate connectorization or termination to the circuit boards and/or other components in the device.Type: GrantFiled: January 27, 2017Date of Patent: May 7, 2019Assignee: MICROSOFT TECHNOLOGY LICENSING, LLCInventors: David Lukofsky, Hanfeng Wang, Joseph Christopher Bolling, Patrick Timothy Codd
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Patent number: 10110025Abstract: An enhanced parallel protection circuit is provided. A system using separate battery packs in a parallel configuration is arranged with multiple protection circuit modules (PCMs). The PCMs are configured to detect fault conditions, such as over voltage, under voltage, excess current, excess heat, etc. Individual PCMs can be configured to control associated switches and/or other components. When a fault condition is detected by an individual PCM, the individual PCM triggers one or more associated switches to shut down one or more components. In addition, by the use of the techniques disclosed herein, the individual PCM can also trigger switches that are controlled by other PCMs. Configurations disclosed herein mitigate occurrences where a multi-PCM device is operating after at least one PCM has shut down. Configurations disclosed herein provide safeguards and redundant protection in scenarios where a fault event is detected by one PCM and not detected by another PCM in a parallel configuration.Type: GrantFiled: January 26, 2016Date of Patent: October 23, 2018Assignee: Microsoft Technology Licensing, LLCInventors: Jonathan Alan Dutra, Scott Francis Fullam, Agustya Ruchir Mehta, Junius Mark Penny, David Lukofsky
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Publication number: 20180219310Abstract: In an electronic device having a compact form factor, such as a head mounted display (HMD) device, a space-saving harness using bundled or ribbonized strands of micro-coaxial (micro-coax) cable may be utilized to provide signal and/or power interconnects between EMI-generating peripheral components and other components in the device such as those populated on circuit boards. Discrete wires are included in the harness to provide shielding to adjacent micro-coax conductors which may carry high speed signals such as MIPI (Mobile Industry Processor Interface) differential signal pairs and provide power and ground return paths. The discrete wires are subjected to fabrication processes during assembly of the micro-coax harness so that their outer diameters substantially match that of components in the micro-coax cable to thereby facilitate connectorization or termination to the circuit boards and/or other components in the device. The matching outer diameters can also provide a consistent pitch (i.e.Type: ApplicationFiled: January 27, 2017Publication date: August 2, 2018Inventors: David Lukofsky, Hanfeng Wang, Joseph Christopher Bolling, Patrick Timothy Codd
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Patent number: 10038264Abstract: A universal coupling is disclosed for electrically and mechanically connecting flexible printed circuit (FPC) components within asymmetric FPC modules. The universal coupling allows a first FPC component to be connected to a second FPC component in two or more different orientations. This allows identical FPC components to be used in two or more asymmetric FPC modules. This in turn allows a reduction in the number of parts and tooling required to fabricate the two or more asymmetric FPC modules, and a simplification of the fabrication process.Type: GrantFiled: November 14, 2016Date of Patent: July 31, 2018Assignee: Microsoft Technology Licensing, LLCInventors: David Lukofsky, Joseph Christopher Bolling, Jeffrey M. Quackenbush, Tapani von Rauner
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Patent number: 9991699Abstract: An electronic device is configured with sub-assemblies including a main logic board, flexible printed circuit, and dual battery packs that are assembled together with electrical connectors to enable power from the battery packs to flow over a power bus that is distributed along the flexible printed circuit and main logic board. A protection circuit module (PCM) in each battery pack is configured to determine a state of each of the connections among the sub-assemblies (i.e., whether or not properly assembled to provide electrical continuity through the connector) so that power from the battery packs is switched on to the power bus only when electrical continuity is verified at each of the connectors. In the event that any connection is faulty, for example due to a misalignment of a connector during assembly that prevents electrical continuity to be established through a connector, neither PCM will switch power on to the power bus.Type: GrantFiled: May 2, 2016Date of Patent: June 5, 2018Assignee: MICROSOFT TECHNOLOGY LICENSING, LLCInventors: Junius Penny, Agustya Mehta, David Lukofsky, Eugene Shoykhet
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Publication number: 20180138617Abstract: A universal coupling is disclosed for electrically and mechanically connecting flexible printed circuit (FPC) components within asymmetric FPC modules. The universal coupling allows a first FPC component to be connected to a second FPC component in two or more different orientations. This allows identical FPC components to be used in two or more asymmetric FPC modules. This in turn allows a reduction in the number of parts and tooling required to fabricate the two or more asymmetric FPC modules, and a simplification of the fabrication process.Type: ApplicationFiled: November 14, 2016Publication date: May 17, 2018Applicant: Microsoft Technology Licensing, LLCInventors: David Lukofsky, Joseph Christopher Bolling, Jeffrey M. Quackenbush, Tapani von Rauner
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Publication number: 20170317490Abstract: An electronic device is configured with sub-assemblies including a main logic board, flexible printed circuit, and dual battery packs that are assembled together with electrical connectors to enable power from the battery packs to flow over a power bus that is distributed along the flexible printed circuit and main logic board. A protection circuit module (PCM) in each battery pack is configured to determine a state of each of the connections among the sub-assemblies (i.e., whether or not properly assembled to provide electrical continuity through the connector) so that power from the battery packs is switched on to the power bus only when electrical continuity is verified at each of the connectors. In the event that any connection is faulty, for example due to a misalignment of a connector during assembly that prevents electrical continuity to be established through a connector, neither PCM will switch power on to the power bus.Type: ApplicationFiled: May 2, 2016Publication date: November 2, 2017Inventors: Junius Penny, Agustya Mehta, David Lukofsky, Eugene Shoykhet
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Publication number: 20170250556Abstract: A dynamic power control circuit is provided. The control circuit can detect the presence of the external power source as well as detect one or more conditions of the device. For instance, the control circuit can detect a voltage difference between a first node coupling a first power output and a system circuit and a second node coupling a second power output and the batteries. The control circuit can also detect the activation or deactivation of the external power source. Based on the inputs, the control circuit can cause the controlled resistor to dynamically adjust a level of impedance between the first node and the second node. The controlled impedance between the first node and the second node enables the system circuit to dynamically utilize power supplied by the external power source as well as power supplied by the batteries.Type: ApplicationFiled: February 26, 2016Publication date: August 31, 2017Inventors: Jonathan Alan Dutra, Junius Mark Penny, David Carl Wyland, David Lukofsky, Agustya Ruchir Mehta
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Publication number: 20170214239Abstract: An enhanced parallel protection circuit is provided. A system using separate battery packs in a parallel configuration is arranged with multiple protection circuit modules (PCMs). The PCMs are configured to detect fault conditions, such as over voltage, under voltage, excess current, excess heat, etc. Individual PCMs can be configured to control associated switches and/or other components. When a fault condition is detected by an individual PCM, the individual PCM triggers one or more associated switches to shut down one or more components. In addition, by the use of the techniques disclosed herein, the individual PCM can also trigger switches that are controlled by other PCMs. Configurations disclosed herein mitigate occurrences where a multi-PCM device is operating after at least one PCM has shut down. Configurations disclosed herein provide safeguards and redundant protection in scenarios where a fault event is detected by one PCM and not detected by another PCM in a parallel configuration.Type: ApplicationFiled: January 26, 2016Publication date: July 27, 2017Inventors: Jonathan Alan Dutra, Scott Francis Fullam, Agustya Ruchir Mehta, Junius Mark Penny, David Lukofsky
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Patent number: 9519077Abstract: An electronic device may be provided with a touch screen display that is controlled based on information from a proximity sensor. The proximity sensor may have a light source that emits infrared light and a light detector that detects reflected infrared light. When the electronic device is in the vicinity of a user's head, the proximity sensor may produce data indicative of the presence of the user's head. Variations in proximity sensor output due to user hair color and smudges on the proximity sensor can be accommodated by using an electrical sensing mechanism in addition to the light sensing mechanism. The proximity sensor may include a pair of capacitive electrodes for generating an electric field in the vicinity of the device. The presence of a user's head can sufficiently disturb the electric field so as to produce data indicative of the presence of the user's head.Type: GrantFiled: June 15, 2015Date of Patent: December 13, 2016Assignee: Apple Inc.Inventors: Prashanth S. S. Holenarsipur, Anant Rai, David Lukofsky
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Publication number: 20150276976Abstract: An electronic device may be provided with a touch screen display that is controlled based on information from a proximity sensor. The proximity sensor may have a light source that emits infrared light and a light detector that detects reflected infrared light. When the electronic device is in the vicinity of a user's head, the proximity sensor may produce data indicative of the presence of the user's head. Variations in proximity sensor output due to user hair color and smudges on the proximity sensor can be accommodated by using an electrical sensing mechanism in addition to the light sensing mechanism. The proximity sensor may include a pair of capacitive electrodes for generating an electric field in the vicinity of the device. The presence of a user's head can sufficiently disturb the electric field so as to produce data indicative of the presence of the user's head.Type: ApplicationFiled: June 15, 2015Publication date: October 1, 2015Inventors: Prashanth S. S. Holenarsipur, Anant Rai, David Lukofsky
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Patent number: 9088282Abstract: An electronic device may be provided with a touch screen display that is controlled based on information from a proximity sensor. The proximity sensor may have a light source that emits infrared light and a light detector that detects reflected infrared light. When the electronic device is in the vicinity of a user's head, the proximity sensor may produce data indicative of the presence of the user's head. Variations in proximity sensor output due to user hair color and smudges on the proximity sensor can be accommodated by using an electrical sensing mechanism in addition to the light sensing mechanism. The proximity sensor may include a pair of capacitive electrodes for generating an electric field in the vicinity of the device. The presence of a user's head can sufficiently disturb the electric field so as to produce data indicative of the presence of the user's head.Type: GrantFiled: January 25, 2013Date of Patent: July 21, 2015Assignee: Apple Inc.Inventors: Prashanth S. S. Holenarsipur, Anant Rai, David Lukofsky
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Publication number: 20140213323Abstract: An electronic device may be provided with a touch screen display that is controlled based on information from a proximity sensor. The proximity sensor may have a light source that emits infrared light and a light detector that detects reflected infrared light. When the electronic device is in the vicinity of a user's head, the proximity sensor may produce data indicative of the presence of the user's head. Variations in proximity sensor output due to user hair color and smudges on the proximity sensor can be accommodated by using an electrical sensing mechanism in addition to the light sensing mechanism. The proximity sensor may include a pair of capacitive electrodes for generating an electric field in the vicinity of the device. The presence of a user's head can sufficiently disturb the electric field so as to produce data indicative of the presence of the user's head.Type: ApplicationFiled: January 25, 2013Publication date: July 31, 2014Applicant: Apple Inc.Inventors: Prashanth S. S. Holenarsipur, Anant Rai, David Lukofsky