Patents by Inventor Liangfeng Xu
Liangfeng Xu 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: 9451356Abstract: A sound producing apparatus with multi-directivity has two or more speakers to produce music or other types of audio sounds. Each of the speakers can produce audio sounds in a certain direction and at least one speaker is steerable so that its sound propagation direction relative to the others can be changed. Furthermore, one or more speakers can produce audio sounds in an adjustable angular range. One or more of the speakers can be dual-mode speakers, each of which can be operated as a wide-angle speaker or a narrow-angle speaker. With multi-directivity, it is possible to play one type of music in one direction and another type of music in another direction to suit the interests of the audience. The apparatus can be a mobile phone, an audio player, a digital or analog recorder/player, or the like.Type: GrantFiled: December 18, 2008Date of Patent: September 20, 2016Assignee: Nokia Technologies OyInventors: Liangfeng Xu, Xia S. Wang, Chenguang Cai, Jani K. Nurminen, Antti O. Salo, Limei Xu, Xuesheng Li, Yi Wang, Min Chen
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Patent number: 9274621Abstract: An apparatus is provided, which comprises: a display configured to display an image, a sensor arrangement (100), and a processing arrangement, wherein the sensor arrangement comprises first, second and third linear sensor arrays (102,104,106), each of the linear sensor arrays being disposed generally orthogonal to each of the other linear sensor arrays and converging with each of the other linear sensor arrays at or near one end thereof, and wherein the processing arrangement is configured, in response to determining that two consecutive inputs are on different ones of the first and second linear sensor arrays, to rotate the image displayed on the display about a first axis, in response to determining that two consecutive inputs are on different ones of the second and third sensor arrays, to rotate the image displayed on the display about a second axis, the second axis being substantially perpendicular to the first axis, and in response to determining that two consecutive inputs are on different ones of the fType: GrantFiled: March 26, 2009Date of Patent: March 1, 2016Assignee: Nokia Technologies OyInventors: Zhicheng Deng, Liangfeng Xu
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Patent number: 9201255Abstract: Apparatus including a first liquid crystal layer configured to receive at least a portion of an image and to provide the portion of the image across an angular viewing range; first substantially transparent electrodes positioned adjacent the first liquid crystal layer, the first electrodes being configured to have at least a first configuration in which a first subset of the electrodes provide electric fields across the first liquid crystal layer to form first transparent regions and first opaque regions in the first liquid crystal layer to provide a first angular viewing range, and a second configuration in which a second subset of the electrodes provide electric fields across the first liquid crystal layer to form second different transparent regions and second different opaque regions in the first liquid crystal layer to provide a second angular viewing range, having a different angular viewing range to the first angular viewing range.Type: GrantFiled: March 19, 2010Date of Patent: December 1, 2015Assignee: Nokia Technologies OyInventors: Liangfeng Xu, Huaya Cao, Kongqiao Wang, Ziqiang Huang, Jinbi Leng, Chenguang Cai
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Publication number: 20130057790Abstract: Apparatus including a first liquid crystal layer configured to receive at least a portion of an image and to provide the portion of the image across an angular viewing range; first substantially transparent electrodes positioned adjacent the first liquid crystal layer, the first electrodes being configured to have at least a first configuration in which a first subset of the electrodes provide electric fields across the first liquid crystal layer to form first transparent regions and first opaque regions in the first liquid crystal layer to provide a first angular viewing range, and a second configuration in which a second subset of the electrodes provide electric fields across the first liquid crystal layer to form second different transparent regions and second different opaque regions in the first liquid crystal layer to provide a second angular viewing range, having a different angular viewing range to the first angular viewing range.Type: ApplicationFiled: March 19, 2010Publication date: March 7, 2013Applicant: Nokia CorporationInventors: Liangfeng Xu, Huaya Cao, Kongqiao Wang, Ziqiang Huang, Jinbi Leng, Chenguang Cai
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Publication number: 20130044465Abstract: According to an embodiment of the present invention, an apparatus comprises an elongated body portion having an interior chamber and a tapered end; a transparent dome housing accommodated by the tapered end; a light source housed within the transparent dome housing and capable of emitting light through the transparent dome housing to an external receiver; a battery housed within the interior chamber and electrically coupled with the light source; and a surface detection mechanism coupled with the transparent dome housing and electrically coupled with the light source and the battery, the surface detection mechanism capable of at least one of activating the light source when the apparatus contacts a surface and deactivating the light source when the apparatus does not contact the surface.Type: ApplicationFiled: April 30, 2010Publication date: February 21, 2013Applicant: NOKIA CORPORATIONInventors: Zhongkui Chen, Kongqiao Wang, Anping Zhao, Liangfeng Xu
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Publication number: 20120026196Abstract: An apparatus is provided, which comprises: a display configured to display an image,a sensor arrangement (100), and a processing arrangement, wherein the sensor arrangement comprises first,second and third linear sensor arrays (102,104,106), each of the linear sensor arrays being disposed generally orthogonal to each of the other linear sensor arrays and converging with each of the other linear sensor arrays at or near one end thereof, and wherein the processing arrangement is configured, in response to determining that two consecutive inputs are on different ones of the first and second linear sensor arrays, to rotate the image displayed on the display about a first axis, in response to determining that two consecutive inputs are on different ones of the second and third sensor arrays, to rotate the image displayed on the display about a second axis, the second axis being substantially perpendicular to the first axis, and in response to determining that two consecutive inputs are on different ones of the firType: ApplicationFiled: March 26, 2009Publication date: February 2, 2012Applicant: NOKIA CORPORATIONInventors: Zhicheng Deng, Liangfeng Xu
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Patent number: 7822446Abstract: A portable electronic device including electronic circuitry; and a housing having the electronic circuitry mounted therein. The housing includes a first housing section movably connected to a second housing section by a compliant hinge arrangement. The compliant hinge arrangement includes at least one living hinge. The first and second sections are adapted to longitudinally slide relative to each other.Type: GrantFiled: February 9, 2007Date of Patent: October 26, 2010Assignee: Nokia CorporationInventors: Ramin Vatanparast, Liangfeng Xu
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Publication number: 20100158287Abstract: A sound producing apparatus with multi-directivity has two or more speakers to produce music or other types of audio sounds. Each of the speakers can produce audio sounds in a certain direction and at least one speaker is steerable so that its sound propagation direction relative to the others can be changed. Furthermore, one or more speakers can produce audio sounds in an adjustable angular range. One or more of the speakers can be dual-mode speakers, each of which can be operated as a wide-angle speaker or a narrow-angle speaker. With multi-directivity, it is possible to play one type of music in one direction and another type of music in another direction to suit the interests of the audience. The apparatus can be a mobile phone, an audio player, a digital or analog recorder/player, or the like.Type: ApplicationFiled: December 18, 2008Publication date: June 24, 2010Inventors: Liangfeng Xu, Xia S. Wang, Chenguang Cai, Jani K. Nurminen, Antti O. Salo, Limei Xu, Xuesheng Li, Yi Wang, Min Chen
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Publication number: 20100141604Abstract: Methods, apparatuses, and systems for processing tactile input received at a display are disclosed. An apparatus may include a display comprising a tactile sensor and a display screen. The tactile sensor may include a top layer comprising a first plurality of resistive strips, wherein each of the resistive strips in the top layer are spaced apart from one another, a bottom layer comprising a second plurality of resistive strips, wherein each of the resistive strips in the bottom layer are spaced apart from one another, and a separator positioned between the first plurality of resistive strips of the top layer and the second plurality of resistive strips of the bottom layer, wherein the tactile sensor is configured to receive a tactile input to cause at least one of the resistive strips of the top layer to contact at least one of the plurality of resistive strips of the bottom layer.Type: ApplicationFiled: December 9, 2008Publication date: June 10, 2010Applicant: Nokia CorporationInventors: Chenguang Cai, Liangfeng Xu, Anping Zhao, Antti Salo
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Publication number: 20080194120Abstract: A portable electronic device including electronic circuitry; and a housing having the electronic circuitry mounted therein. The housing includes a first housing section movably connected to a second housing section by a compliant hinge arrangement. The compliant hinge arrangement includes at least one living hinge. The first and second sections are adapted to longitudinally slide relative to each other.Type: ApplicationFiled: February 9, 2007Publication date: August 14, 2008Inventors: Ramin Vatanparast, Liangfeng Xu
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Patent number: 7230187Abstract: A multi-layer printed wire board (PWB) structure optimized for improved drop reliability, reliable electrical connections under thermal load, and minimal thickness is provided, along with a mobile terminal, including the PWB. The PWB includes alternating conductive layers and insulative layers. The outermost three layers form an interconnect structure constructed of two conductive layers surrounding an insulative-coated conductive layer. The thicknesses of the various layers are optimized to have an increased resistance to mechanical shock resulting from, for instance, a drop onto a hard surface. In addition, the optimized PWB structure has a minimized thickness and an improved resistance to connection failures resulting from cyclical thermal loads.Type: GrantFiled: December 22, 2003Date of Patent: June 12, 2007Assignee: Nokia CorporationInventors: Liangfeng Xu, Tommi Reinikainen, Arni Kujala, Wei Ren, Ian Niemi, Ilkka Kartio
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Publication number: 20050135072Abstract: A multi-layer printed wire board (PWB) structure optimized for improved drop reliability, reliable electrical connections under thermal load, and minimal thickness is provided, along with a mobile terminal, including the PWB. The PWB includes alternating conductive layers and insulative layers. The outermost three layers form an interconnect structure constructed of two conductive layers surrounding an insulative-coated conductive layer. The thicknesses of the various layers are optimized to have an increased resistance to mechanical shock resulting from, for instance, a drop onto a hard surface. In addition, the optimized PWB structure has a minimized thickness and an improved resistance to connection failures resulting from cyclical thermal loads.Type: ApplicationFiled: December 22, 2003Publication date: June 23, 2005Applicant: Nokia CorporationInventors: Liangfeng Xu, Tommi Reinikainen, Arni Kujala, Wei Ren, Ian Niemi, Ilkka Kartio
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Patent number: 6570961Abstract: X-ray source bearing assemblies are described herein. In an exemplary embodiment, an x-ray source includes a target anode, a rotor shaft coupled to the target anode, and a motor coupled to the rotor shaft at an end of the shaft opposite the target anode. The bearing housing, in the exemplary embodiment, includes a rotor bore, the rotor shaft extending through said rotor bore and supported therein by a plurality bearings. The housing and the shaft form a cooling medium pool so that as the shaft rotates, a cooling medium in the pool is radially displaced.Type: GrantFiled: July 25, 2001Date of Patent: May 27, 2003Assignee: General Electric CompanyInventors: Daniel John Noonan, Mark Ernest Vermilyea, Antonio Alberto Mogro-Campero, Liangfeng Xu
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Publication number: 20030021378Abstract: X-ray source bearing assemblies are described herein. In an exemplary embodiment, an x-ray source includes a target anode, a rotor shaft coupled to the target anode, and a motor coupled to the rotor shaft at an end of the shaft opposite the target anode. The bearing housing, in the exemplary embodiment, includes a rotor bore, the rotor shaft extending through said rotor bore and supported therein by a plurality bearings. The housing and the shaft form a cooling medium pool so that as the shaft rotates, a cooling medium in the pool is radially displaced.Type: ApplicationFiled: July 25, 2001Publication date: January 30, 2003Inventors: Daniel John Noonan, Mark Ernest Vermilyea, Antonio Alberto Mogro-Campero, Liangfeng Xu
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Patent number: 6483065Abstract: Methods and apparatus for facilitating current transmission through a circuit breaker are described. In an exemplary embodiment of the apparatus, a coupler that includes a copper conductive ring having an inner annular wall is provided. The coupler is electrically coupled to the line terminal. A bore extends through the ring, and the bore is sized so that the shaft can extend therethrough. A plurality of copper bristles extend radially inward from the ring inner annular wall, and the bristles are in electrical contact with the conductive ring. The bristles also are in electrical contact with shaft when shaft extends through ring bore. At least some bristles extend sufficiently radially inward from the ring inner wall so that free ends of at least some bristles are in electrical contact with the shaft when the shaft extends through the bore.Type: GrantFiled: October 9, 2001Date of Patent: November 19, 2002Assignee: General Electric CompanyInventors: Aniruddha Dattatraya Gadre, Jeffrey Dyson Lord, Liangfeng Xu, John Gardner Toney, William James Premerlani, Bharat S. Bagepalli
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Patent number: 6377658Abstract: The present invention provides, in one embodiment, a bearing assembly consisting of a rotatable shaft and a stator coaxially aligned. The stator has at least one circumferential protrusion that contains respective segments that extend radially from the stator. Each of the respective segments contains at least one capture cavity and has a main cavity disposed between each of the respective segments so as to house a thermal shunt. A plurality of roller bearings are also disposed radially between the rotatable shaft and the stator. In addition, at least one viscoseal is disposed on the rotatable shaft.Type: GrantFiled: July 27, 2001Date of Patent: April 23, 2002Assignee: General Electric CompanyInventors: Mark Ernest Vermilyea, Antonio Alberto Mogro-Campero, Subhasish Roychoudhury, Daniel John Noonan, Vivek Bhatt, Liangfeng Xu, Suryaprakash Ganti