Patents by Inventor Zhanping Xu

Zhanping 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).

  • Publication number: 20060228050
    Abstract: The invention relates to a method for calibrating 3D image sensors. Work tolerances, temperature variations and aging processes result in that the various pixels in a receiving array deviate from one another to different degrees. The aim of the invention is therefore to calibrate the entire receiving array with respect to every pixel. During operation of the 3D image sensor there is usually no reference scene available with which every pixel could be calibrated based on known phase relations. According to the invention, the entire receiving array is illuminated at defined intervals exclusively with one modulated light source. Alternatively, the emitted light source can be used via a deflection device. Two different distances can be simulated by carrying out two calibrating measurements with different phase relations between emitted and received signal, thereby making it possible to detect distance-related errors for every pixel individually.
    Type: Application
    Filed: December 18, 2003
    Publication date: October 12, 2006
    Applicant: Conti Temic Microelectronic GmbM
    Inventors: Zhanping Xu, Christian Lang, Bernd Schneider
  • Publication number: 20050237811
    Abstract: The present invention relates to a photonic mixer device with a photosensitive layer, at least two modulation gates (3, 4, 103, 104, 203, 204, 303, 304, 403, 404) and at least two readout electrodes (1, 2, 101, 102, 201, 202, 301, 302, 401, 402, 501, 502, 601, 602) connected to the photosensitive layer, the modulation gates (3, 4, 103, 104, 203, 204, 303, 304, 403, 404) being able to be connected to a modulation device which raises and lowers the potential of the modulation gates relative to one another and relative to the preferably constant potential of the readout electrodes corresponding to a desired modulation function.
    Type: Application
    Filed: April 4, 2005
    Publication date: October 27, 2005
    Inventors: Zhanping Xu, Tobias Moller, Holger Kraft, Jochen Frey, Martin Albrecht
  • Publication number: 20050237593
    Abstract: The present invention relates to an electromagnetic mixing system for receiving and processing modulated electromagnetic signals, with a signal detector made from a semiconductor material for receiving and converting electromagnetic radiation into an electric measured value and with at least one modulation input modulating the reception of the signal detector, and also with at least two accumulation electrodes which are connected to output electronics at the output of which a mixture of the received signal and at least one modulation signal applied at the modulation input is effectively provided as electric signal. The present invention also relates to a method for operating such an electromagnetic mixing system, the electromagnetic signals striking the signal detector producing charge carriers which, depending on the at least one modulation signal, are conducted at least partially alternately to the at least two different readout electrodes.
    Type: Application
    Filed: April 4, 2005
    Publication date: October 27, 2005
    Inventors: Zhanping Xu, Jochen Frey, Tobias Moller, Holger Kraft, Helmut Riedel
  • Publication number: 20050233722
    Abstract: The present invention relates to a method and an electronic circuit for processing at least two at least partially correlated output signal streams of a mixer, the mixer having at least two signal inputs and at least two electric signal outputs. In order to provide a method and a device or an electronic circuit which enables the correlated signal portions of the output signals of a mixer to be separated from the uncorrelated signal portions undelayed, it is proposed according to the invention that the difference of the output signal streams of the mixer is formed pairwise directly and during the readout of the signal streams and that the circuit has an apparatus for the instantaneous formation of the difference between the signal streams of two mixer outputs in each case.
    Type: Application
    Filed: April 4, 2005
    Publication date: October 20, 2005
    Inventors: Zhanping Xu, Holger Kraft, Tobias Moller, Jochen Frey
  • Publication number: 20050205467
    Abstract: An apparatus and process for stripping gases from solids comprises a structured packing in a stripping section of a vessel. The structured packing comprises a plurality of corrugated ribbons with each corrugated ribbon having at least two faces angular to each other. The ribbons at least partially obstruct passage of the solid particles. Edges of adjacent ribbons defining openings for the passage of contacted particles.
    Type: Application
    Filed: March 19, 2004
    Publication date: September 22, 2005
    Inventors: Brian Hedrick, Zhanping Xu, Paolo Palmas, Mitchell Kowalczyk, Matthew Westby, Weikai Gu, J. Houdek, Daniel Monkelbaan
  • Patent number: 6739585
    Abstract: Liquid distributors collect liquid falling out of the spout group at the ends of a downcomer of a fractionation tray. The devices then distribute the liquid against the wall of the column or onto the decking of the next lower tray so to cause uniform liquid flows across the terminal decking section of the next lower multiple downcomer tray. The apparatus improves the liquid flow path on the terminal decking section of the tray, thus increasing the overall efficiency of the tray.
    Type: Grant
    Filed: March 7, 2002
    Date of Patent: May 25, 2004
    Assignee: UOP LLC
    Inventors: Nicholas F. Urbanski, Zhanping Xu
  • Patent number: 6715741
    Abstract: The efficiency of multiple down comer fractional distillation trays is improved by distributing the liquid egressing from the bottom of the downcomers in a manner which provides a uniform length liquid flow path on the next lower tray. This is accomplished by liquid distribution devices suspended below the downcomers of the upper tray, with the devices running parallel to the downcomers of the next lower tray and being adapted to collect the falling liquid and then disperse it onto the decking below along the length of the lower downcomers through openings in the distribution device.
    Type: Grant
    Filed: April 22, 2003
    Date of Patent: April 6, 2004
    Inventors: Zhanping Xu, Nicholas F. Urbanski
  • Patent number: 6682633
    Abstract: A modular apparatus for fractional distillation and other forms of vapor-liquid contacting is presented. The apparatus performs cocurrent contacting of vapor and liquid in a number of identical structural units which are placed in horizontal layers in a column or other enclosure. The structural units, or modules, are horizontally spaced apart in each layer to provide spaces for the downcomers from the modules of the next higher layer. The downcomers deliver the liquid to one of two inclined contacting channels, with the contacting channels discharging the vapor and liquid into separation chambers at the top of the module. Vapor flows upward from the separation chambers to the contacting channel of the next higher module and liquid flows down through a single central downcomer to the next lower contacting channel.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: January 27, 2004
    Assignee: UOP LLC
    Inventors: Zhanping Xu, Dennis H. Bielinski
  • Publication number: 20030193099
    Abstract: The efficiency of multiple downcomer fractional distillation trays is improved by distributing the liquid egressing from the bottom of the downcomers in a manner which provides a uniform length liquid flow path on the next lower tray. This is accomplished by liquid distribution devices suspended below the downcomers of the upper tray, with the devices running parallel to the downcomers of the next lower tray and being adapted to collect the falling liquid and then disperse it onto the decking below along the length of the lower downcomers through openings in the distribution device.
    Type: Application
    Filed: April 22, 2003
    Publication date: October 16, 2003
    Inventors: Zhanping Xu, Nicholas F. Urbanski
  • Patent number: 6568663
    Abstract: The efficiency of multiple downcomer fractional distillation trays is improved by distributing the liquid egressing from the bottom of the downcomers in a manner which provides a uniform length liquid flow path on the next lower tray. This is accomplished by liquid distribution devices suspended below the downcomers of the upper tray, with the devices running parallel to the downcomers of the next lower tray and being adapted to collect the falling liquid and then disperse it onto the decking below along the length of the lower downcomers through openings in the distribution device.
    Type: Grant
    Filed: June 2, 2000
    Date of Patent: May 27, 2003
    Assignee: UOP LLC
    Inventors: Zhanping Xu, Nicholas F. Urbanski
  • Patent number: 6479720
    Abstract: A process for the production of alkylaromatic hydrocarbons by alkylating aromatic hydrocarbons with linear olefinic hydrocarbons is disclosed. The linear olefinic hydrocarbons are produced by dehydrogenating linear paraffinic hydrocarbons which are extracted from a heartcut that is distilled from a kerosene boiling range fraction in either a dividing wall fractionation column or in two fully thermally coupled fractionation columns. The process significantly decreases the cost of utilities in producing alkylaromatic precursors for detergent manufacture.
    Type: Grant
    Filed: December 29, 1999
    Date of Patent: November 12, 2002
    Assignee: UOP LLC
    Inventors: Dennis E. O'Brien, Dennis H. Bielinski, Zhanping Xu
  • Patent number: 6390454
    Abstract: Liquid distributors collect liquid falling out of the spout group at the ends of a downcomer of a fractionation tray. The devices then distribute the liquid against the wall of the column or onto the decking of the next lower tray so to cause uniform liquid flows across the terminal decking section of the next lower multiple downcomer tray. The apparatus improves the liquid flow path on the terminal decking section of the tray, thus increasing the overall efficiency of the tray.
    Type: Grant
    Filed: June 2, 2000
    Date of Patent: May 21, 2002
    Assignee: UOP LLC
    Inventors: Nicholas F. Urbanski, Zhanping Xu
  • Patent number: 6045762
    Abstract: An apparatus for catalytic distillation consists of alternatively a catalyst unit and an active liquid distributor tray. The catalyst unit is formed by series of troughs containing catalysts with spaces between adjacent troughs for vapor flow. The active liquid distributor tray is preferably a V-shaped tray formed with collectors that function as both a liquid distributor to deliver liquid at the appropriate locations to the underneath catalyst unit and a mass transfer device. Liquid flows down to the catalyst toughs from bottom of the sump of each collector and vapor flows up through the upper diverging walls of the collector. Packing materials may be placed on the tray or in the spaces between the troughs or both to enhance mass transfer. The catalyst troughs preferably are partitioned to cause the liquid to flow through the catalyst and to overflow the upper rim of the troughs to escape therefrom whereby the catalyst is maintained submerged.
    Type: Grant
    Filed: January 22, 1997
    Date of Patent: April 4, 2000
    Assignee: Governors of The University of Alberta
    Inventors: Karl Tze-Tang Chuang, Zhanping Xu