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).

  • Patent number: 9451356
    Abstract: 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: Grant
    Filed: December 18, 2008
    Date of Patent: September 20, 2016
    Assignee: Nokia Technologies Oy
    Inventors: Liangfeng Xu, Xia S. Wang, Chenguang Cai, Jani K. Nurminen, Antti O. Salo, Limei Xu, Xuesheng Li, Yi Wang, Min Chen
  • Patent number: 9274621
    Abstract: 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 f
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: March 1, 2016
    Assignee: Nokia Technologies Oy
    Inventors: Zhicheng Deng, Liangfeng Xu
  • Patent number: 9201255
    Abstract: 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: Grant
    Filed: March 19, 2010
    Date of Patent: December 1, 2015
    Assignee: Nokia Technologies Oy
    Inventors: Liangfeng Xu, Huaya Cao, Kongqiao Wang, Ziqiang Huang, Jinbi Leng, Chenguang Cai
  • Publication number: 20130057790
    Abstract: 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: Application
    Filed: March 19, 2010
    Publication date: March 7, 2013
    Applicant: Nokia Corporation
    Inventors: Liangfeng Xu, Huaya Cao, Kongqiao Wang, Ziqiang Huang, Jinbi Leng, Chenguang Cai
  • Publication number: 20130044465
    Abstract: 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: Application
    Filed: April 30, 2010
    Publication date: February 21, 2013
    Applicant: NOKIA CORPORATION
    Inventors: Zhongkui Chen, Kongqiao Wang, Anping Zhao, Liangfeng Xu
  • Publication number: 20120026196
    Abstract: 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 fir
    Type: Application
    Filed: March 26, 2009
    Publication date: February 2, 2012
    Applicant: NOKIA CORPORATION
    Inventors: Zhicheng Deng, Liangfeng Xu
  • Patent number: 7822446
    Abstract: 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: Grant
    Filed: February 9, 2007
    Date of Patent: October 26, 2010
    Assignee: Nokia Corporation
    Inventors: Ramin Vatanparast, Liangfeng Xu
  • Publication number: 20100158287
    Abstract: 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: Application
    Filed: December 18, 2008
    Publication date: June 24, 2010
    Inventors: Liangfeng Xu, Xia S. Wang, Chenguang Cai, Jani K. Nurminen, Antti O. Salo, Limei Xu, Xuesheng Li, Yi Wang, Min Chen
  • Publication number: 20100141604
    Abstract: 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: Application
    Filed: December 9, 2008
    Publication date: June 10, 2010
    Applicant: Nokia Corporation
    Inventors: Chenguang Cai, Liangfeng Xu, Anping Zhao, Antti Salo
  • Publication number: 20080194120
    Abstract: 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: Application
    Filed: February 9, 2007
    Publication date: August 14, 2008
    Inventors: Ramin Vatanparast, Liangfeng Xu
  • Patent number: 7230187
    Abstract: 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: Grant
    Filed: December 22, 2003
    Date of Patent: June 12, 2007
    Assignee: Nokia Corporation
    Inventors: Liangfeng Xu, Tommi Reinikainen, Arni Kujala, Wei Ren, Ian Niemi, Ilkka Kartio
  • Publication number: 20050135072
    Abstract: 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: Application
    Filed: December 22, 2003
    Publication date: June 23, 2005
    Applicant: Nokia Corporation
    Inventors: Liangfeng Xu, Tommi Reinikainen, Arni Kujala, Wei Ren, Ian Niemi, Ilkka Kartio
  • Patent number: 6570961
    Abstract: 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: Grant
    Filed: July 25, 2001
    Date of Patent: May 27, 2003
    Assignee: General Electric Company
    Inventors: Daniel John Noonan, Mark Ernest Vermilyea, Antonio Alberto Mogro-Campero, Liangfeng Xu
  • Publication number: 20030021378
    Abstract: 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: Application
    Filed: July 25, 2001
    Publication date: January 30, 2003
    Inventors: Daniel John Noonan, Mark Ernest Vermilyea, Antonio Alberto Mogro-Campero, Liangfeng Xu
  • Patent number: 6483065
    Abstract: 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: Grant
    Filed: October 9, 2001
    Date of Patent: November 19, 2002
    Assignee: General Electric Company
    Inventors: Aniruddha Dattatraya Gadre, Jeffrey Dyson Lord, Liangfeng Xu, John Gardner Toney, William James Premerlani, Bharat S. Bagepalli
  • Patent number: 6377658
    Abstract: 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: Grant
    Filed: July 27, 2001
    Date of Patent: April 23, 2002
    Assignee: General Electric Company
    Inventors: Mark Ernest Vermilyea, Antonio Alberto Mogro-Campero, Subhasish Roychoudhury, Daniel John Noonan, Vivek Bhatt, Liangfeng Xu, Suryaprakash Ganti