Patents by Inventor Kai Benjamins
Kai Benjamins 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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Publication number: 20240105046Abstract: Systems and methods are disclosed to enable performance of a lens distance test in head-mounted displays (HMDs) to determine the distance between a user's eye and a lens of the HMD (e.g. the display lens in a virtual or augmented reality device). In embodiments, the HMD is configured to determine a current pose of the eye based on a series of captured eye images. The pose information is used to determine the distance from the apex of the cornea to a closest point on the lens. If the determined distance is too small or too large, an alert or notification is generated instructing to adjust the HMD or change the light seal to achieve better distancing, in order to reduce the risk of eye injury and/or improve user experience. In embodiments, the lens distance test may be repeated during a user session to reevaluate and/or monitor the lens distance.Type: ApplicationFiled: September 20, 2023Publication date: March 28, 2024Applicant: Apple Inc.Inventors: Chia-Yin Tsai, Kai Benjamin Quack, Hua Gao, Tom Sengelaub, Alper Yildirim
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Patent number: 11918529Abstract: A fluid-driven actuator 100 includes a bending actuator 200 including a first wall portion 201, a second wall portion 203 cooperating with the first wall portion 201 to define an undulating actuator profile. The bending actuator 200 also includes an inner fluid bladder 202 disposed between the first and second wall portions 201,203 and following the undulating actuator profile. The fluid-driven actuator 100 further includes a restraint member 300 arranged to cooperate with the bending actuator 200 to produce a plurality of motions in response to fluid supplied to the inner fluid bladder 202.Type: GrantFiled: January 17, 2018Date of Patent: March 5, 2024Assignee: National University of SingaporeInventors: Chen Hua Yeow, Hong Kai Yap, Wee Keong Benjamin Ang, Xinquan Liang
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Patent number: 9191881Abstract: The present invention describes a wireless network, in particular for automation, realtime and/or industrial applications, having at least two access network nodes and at least one radio station for wireless communication with at least one of the at least two access network nodes, wherein each of the at least two access network nodes uses a data channel selected from a set of available selectable data channels for wireless communication with a radio station assigned to it in each case, wherein a control communication channel which is distinct from the selectable data channels is provided in addition, and each of the at least two access network nodes is embodied for wirelessly sending information messages over the control communication channel and the at least one radio station is embodied for receiving the control communication channel.Type: GrantFiled: March 11, 2011Date of Patent: November 17, 2015Assignee: Siemens AktiengesellschaftInventors: Kai Benjamins, Stefan Keller, Jörg Müller, Martin Ober, Stephan Wolf
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Patent number: 8498279Abstract: A data communication system includes an access point and a plurality of stations each for exchanging wireless data communication messages with the access point. At least some of the messages are in a format that includes at least one message header and a plurality of data units. Each of the data units includes a respective data unit header and a respective data frame. Each data unit header identifies a respective one of the stations as a recipient to receive the respective data frame of the data unit.Type: GrantFiled: June 9, 2008Date of Patent: July 30, 2013Assignee: Siemens AktiengesellschaftInventors: Raymond Liao, Raghuveer Chereddy, Joerg Mueller, Stefan Keller, Kai Benjamins, Christoph Weiler
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Patent number: 8411663Abstract: A data communication system includes an access point and a plurality of stations each for exchanging wireless data communication messages with the access point. At least some of the messages are in a format that includes at least one message header and a plurality of data units. Each of the data units includes a respective data unit header and a respective data frame. Each data unit header identifies a respective one of the stations as a recipient to receive the respective data frame of the data unit.Type: GrantFiled: June 9, 2008Date of Patent: April 2, 2013Assignee: Siemens AktiengesellschaftInventors: Raymond Liao, Raghuveer Chereddy, Joerg Mueller, Stefan Keller, Kai Benjamins, Christoph Weiler
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Patent number: 8125955Abstract: A data communication system includes an access point and a plurality of stations each for exchanging wireless data communication messages with the access point. At least some of the messages are in a format that includes at least one message header and a plurality of data units. Each of the data units includes a respective data unit header and a respective data frame. Each data unit header identifies a respective one of the stations as a recipient to receive the respective data frame of the data unit.Type: GrantFiled: June 9, 2008Date of Patent: February 28, 2012Assignee: Siemens AktiengesellschaftInventors: Raymond Liao, Raghuveer Chereddy, Joerg Mueller, Stefan Keller, Kai Benjamins, Christoph Weiler
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Publication number: 20110222510Abstract: The present invention describes a wireless network, in particular for automation, realtime and/or industrial applications, having at least two access network nodes and at least one radio station for wireless communication with at least one of the at least two access network nodes, wherein each of the at least two access network nodes uses a data channel selected from a set of available selectable data channels for wireless communication with a radio station assigned to it in each case, wherein a control communication channel which is distinct from the selectable data channels is provided in addition, and each of the at least two access network nodes is embodied for wirelessly sending information messages over the control communication channel and the at least one radio station is embodied for receiving the control communication channel.Type: ApplicationFiled: March 11, 2011Publication date: September 15, 2011Applicant: Siemens AktiengesellschaftInventors: Kai Benjamins, Stefan Keller, Jörg Müller, Martin Ober, Stephan Wolf
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Publication number: 20110222522Abstract: A radio station system for a wireless network with at least two access network nodes, wherein a first of the at least two access network node is assigned to the radio station system as an access network node in the wireless network and the radio station system is connected to the first access network node over an active radio link for the transmission of user data. During the existence of the active radio link between a first radio station and the first access network node, a second radio station transmits or exchanges no user data via a radio link with an access network node in the wireless network and at least at times identifies available access network nodes in the wireless network for the radio station system.Type: ApplicationFiled: March 11, 2011Publication date: September 15, 2011Applicant: Siemens AktiengesellschaftInventors: Yahya AKIL, Kai Benjamins, Stefan Keller, Jörg Müller, Manfred Wolf
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Patent number: 7724766Abstract: A data communication system includes an access point and a plurality of stations each for exchanging wireless data communication messages with the access point. At least some of the messages are in a format that includes at least one message header and a plurality of data units. Each of the data units includes a respective data unit header and a respective data frame. Each data unit header identifies a respective one of the stations as a recipient to receive the respective data frame of the data unit.Type: GrantFiled: March 31, 2005Date of Patent: May 25, 2010Assignee: Siemens AktiengesellschaftInventors: Raymond Liao, Raghuveer Chereddy, Joerg Mueller, Stefan Keller, Kai Benjamins, Christoph Weiler
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Publication number: 20080274741Abstract: A data communication system includes an access point and a plurality of stations each for exchanging wireless data communication messages with the access point. At least some of the messages are in a format that includes at least one message header and a plurality of data units. Each of the data units includes a respective data unit header and a respective data frame. Each data unit header identifies a respective one of the stations as a recipient to receive the respective data frame of the data unit.Type: ApplicationFiled: June 9, 2008Publication date: November 6, 2008Inventors: Raymond Liao, Raghuveer Chereddy, Joerg Mueller, Stefan Keller, Kai Benjamins, Christoph Weiler
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Publication number: 20080240063Abstract: A data communication system includes an access point and a plurality of stations each for exchanging wireless data communication messages with the access point. At least some of the messages are in a format that includes at least one message header and a plurality of data units. Each of the data units includes a respective data unit header and a respective data frame. Each data unit header identifies a respective one of the stations as a recipient to receive the respective data frame of the data unit.Type: ApplicationFiled: June 9, 2008Publication date: October 2, 2008Inventors: Raymond Liao, Raghuvver Chereddy, Joerg Mueller, Stefan Keller, Kai Benjamins, Christoph Weiler
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Publication number: 20080240069Abstract: A data communication system includes an access point and a plurality of stations each for exchanging wireless data communication messages with the access point. At least some of the messages are in a format that includes at least one message header and a plurality of data units. Each of the data units includes a respective data unit header and a respective data frame. Each data unit header identifies a respective one of the stations as a recipient to receive the respective data frame of the data unit.Type: ApplicationFiled: June 9, 2008Publication date: October 2, 2008Inventors: Raymond Liao, Raghuveer Chereddy, Joerg Mueller, Stefan Keller, Kai Benjamins, Christoph Weiler
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Publication number: 20080240071Abstract: A data communication system includes an access point and a plurality of stations each for exchanging wireless data communication messages with the access point. At least some of the messages are in a format that includes at least one message header and a plurality of data units. Each of the data units includes a respective data unit header and a respective data frame. Each data unit header identifies a respective one of the stations as a recipient to receive the respective data frame of the data unit.Type: ApplicationFiled: June 9, 2008Publication date: October 2, 2008Inventors: Raymond Liao, Raghuveer Chereddy, Joerg Mueller, Stefan Keller, Kai Benjamins, Christoph Weiler
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Publication number: 20080240042Abstract: A data communication system includes an access point and a plurality of stations each for exchanging wireless data communication messages with the access point. At least some of the messages are in a format that includes at least one message header and a plurality of data units. Each of the data units includes a respective data unit header and a respective data frame. Each data unit header identifies a respective one of the stations as a recipient to receive the respective data frame of the data unit.Type: ApplicationFiled: June 9, 2008Publication date: October 2, 2008Inventors: Raymond Liao, Raghuveer Chereddy, Joerg Mueller, Stefan Keller, Kai Benjamins, Christoph Weiler
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Publication number: 20060221993Abstract: A data communication system includes an access point and a plurality of stations each for exchanging wireless data communication messages with the access point. At least some of the messages are in a format that includes at least one message header and a plurality of data units. Each of the data units includes a respective data unit header and a respective data frame. Each data unit header identifies a respective one of the stations as a recipient to receive the respective data frame of the data unit.Type: ApplicationFiled: March 31, 2005Publication date: October 5, 2006Inventors: Raymond Liao, Raghuveer Chereddy, Joerg Mueller, Stefan Keller, Kai Benjamins, Christoph Weiler