Patents by Inventor Qin Liu

Qin Liu 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).

  • Printing apparatus having fixing mechanism including air pipe assembly
    Patent number: 7587976
    Abstract: A fixing mechanism (2) includes a base (50), an air pump (70) and an air pipe assembly (60). The base defining a connecting hole (522) and a locating groove (542) therein. The air pipe assembly (60) includes a first pipe (62) communicating with the connecting hole, a second pipe (64) connected to the pump and communicating with the first pipe, and a third pipe (66) communicating with the first pipe and the second pipe.
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: September 15, 2009
    Assignees: Shenzhen Futaihong Precision Industry Co., Ltd., FIH (Hong Kong) Limited
    Inventors: Chia-Hsing Chang, Jia-Wu Xiong, Hui Meng, Qin Liu, Hong-Peng Ma, Li-Bing Deng
  • METHOD AND APPARATUS FOR BI-ORTHOGONAL PROJECTION FOR COEFFICIENTS ESTIMATION IN VSB CHANNEL MODELING
    Publication number: 20090227221
    Abstract: In a VSB system, a method for channel modeling to estimate coefficients corresponding to a selected subspace is provided. The method comprises the steps of: selected a predetermined subspace; creating a set of bi-orthogonal vectors for the initially selected subspace; and obtaining a set of coefficients by solving a linear programming problem. Whereby the resultant channel is constructed by the coefficients and their associated subspace.
    Type: Application
    Filed: March 6, 2008
    Publication date: September 10, 2009
    Applicant: LEGEND SILICON CORP.
    Inventors: LIN YANG, QIN LIU
  • METHOD AND APPARATUS FOR ITERATIVELY FORMING SUBSPACE FROM A DICTIONARY FOR VSB CHANNEL MODELING
    Publication number: 20090225892
    Abstract: In a VSB system, a method and receiver for channel modeling is provided. The method comprises the steps of: performing matching pursuit conducted locally with assistant information; and performing basis perturbation using the assistant information.
    Type: Application
    Filed: March 6, 2008
    Publication date: September 10, 2009
    Applicant: LEGEND SILICON CORP.
    Inventors: LIN YANG, QIN LIU
  • METHOD AND APPARATUS FOR DICTIONARY CONSTRUCTION FOR VSB CHANNEL MODELING
    Publication number: 20090225893
    Abstract: A method for creating a dictionary for channel modeling is provided. The method comprising the steps of: providing a channel subject to modeling associated with a VSB system; over-sampling a predetermined segment; and using at least part of the over-sampled values as elements or words of the dictionary.
    Type: Application
    Filed: March 6, 2008
    Publication date: September 10, 2009
    Applicant: LEGEND SILICON CORP.
    Inventors: LIN YANG, QIN LIU
  • Extended wear ophthalmic lens
    Patent number: 7553880
    Abstract: An ophthalmic lens suited for extended-wear periods of at least one day on the eye without a clinically significant amount of corneal swelling and without substantial wearer discomfort. The lens has a balance of oxygen permeability and ion or water permeability, with the ion or water permeability being sufficient to provide good on-eye movement, such that a good tear exchange occurs between the lens and the eye. A preferred lens is a copolymerization product of a oxyperm macromer and an ionoperm monomer. The invention encompasses extended wear contact lenses, which include a core having oxygen transmission and ion transmission pathways extending from the inner surface to the outer surface.
    Type: Grant
    Filed: December 30, 2006
    Date of Patent: June 30, 2009
    Assignee: CIBA Vision Corporation
    Inventors: Paul Clement Nicolson, Richard Carlton Baron, Peter Chabrecek, John Court, Angelika Domschke, Hans Jorge Griesser, Arthur Ho, Jens Hopken, Bronwyn Glenice Laycock, Qin Liu, Dieter Lohmann, Gordon Francis Meijs, Eric Papaspiliotopoulos, Judy Smith Riffle, Klaus Schindhelm, Deborah Sweeney, Wilson Leonard Terry, Jr., Jurgen Vogt, Lynn Cook Winterton
  • Extended wear ophthalmic lens
    Patent number: 7538146
    Abstract: An ophthalmic lens suited for extended-wear periods of at least one day on the eye without a clinically significant amount of corneal swelling and without substantial wearer discomfort. The lens has a balance of oxygen permeability and ion or water permeability, with the ion or water permeability being sufficient to provide good on-eye movement, such that a good tear exchange occurs between the lens and the eye. A preferred lens is a copolymerization product of a oxyperm macromer and an ionoperm monomer. The invention encompasses extended wear contact lenses, which include a core having oxygen transmission and ion transmission pathways extending from the inner surface to the outer surface.
    Type: Grant
    Filed: December 30, 2006
    Date of Patent: May 26, 2009
    Assignee: CIBA Vision Corporation
    Inventors: Paul Clement Nicolson, Richard Carlton Baron, Peter Chabrecek, John Court, Angelika Domschke, Hans Jorge Griesser, Arthur Ho, Jens Hopken, Bronwyn Glenice Laycock, Qin Liu, Dieter Lohmann, Gordon Francis Meijs, Eric Papaspiliotopoulos, Judy Smith Riffle, Klaus Schindhelm, Deborah Sweeney, Wilson Leonard Terry, Jr., Jurgen Vogt, Lynn Cook Winterton
  • MOBILE RECEIVER EQUALIZER STRUCTURE FOR USE IN THE ATSC STANDARD
    Publication number: 20090103600
    Abstract: A receiving device is provided that comprises: a channel estimator adapted to receive an input; and an equalizer adapted to receive the input and generate an equalized output, wherein the equalized output is used by the channel estimator for at least one subsequent channel estimation.
    Type: Application
    Filed: October 22, 2007
    Publication date: April 23, 2009
    Applicant: LEGEND SILICON CORP
    Inventors: LIN YANG, QIN LIU
  • Wet etching of zinc tin oxide thin films
    Publication number: 20090075421
    Abstract: A method of wet etching semiconductor zinc tin oxide includes submerging a semiconductor zinc tin oxide film in a bath solution. The film is partially covered with a pattern of protective material, and the bath solution etches semiconductor zinc tin oxide film not covered by the protective material. A system for wet etching semiconductor zinc tin oxide includes a bath containing a bath solution. The bath solution is effective to wet etch the semiconductor zinc tin oxide.
    Type: Application
    Filed: September 19, 2007
    Publication date: March 19, 2009
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Zhizhang Chen, Eric Wiedemann, Qin Liu
  • FIXING MECHANISM AND PRINTING APPARATUS USING THE SAME
    Publication number: 20090064878
    Abstract: A fixing mechanism (2) includes a base (50), an air pump (70) and an air pipe assembly (60). The base defining a connecting hole (522) and a locating groove (542) therein. The air pipe assembly (60) includes a first pipe (62) communicating with the connecting hole, a second pipe (64) connected to the pump and communicating with the first pipe, and a third pipe (66) communicating with the first pipe and the second pipe.
    Type: Application
    Filed: December 27, 2007
    Publication date: March 12, 2009
    Applicants: SHENZHEN FUTAIHONG PRECISION INDUSTRY CO., LTD., SUTECH TRADING LIMITED
    Inventors: CHIA-HSING CHANG, JIA-WU XIONG, HUI MENG, QIN LIU, HONG-PENG MA, LI-BING DENG
  • Extended Wear Ophthalmic Lens
    Publication number: 20090046242
    Abstract: An ophthalmic lens suited for extended-wear periods of at least one day on the eye without a clinically significant amount of corneal swelling and without substantial wearer discomfort. In one embodiment, an opthalmic lens is a copolymerization product of at least one oxyperm, at least one ionoperm, and a crosslinker. In one embodiment, a lens has a tensile modulus of less than about 3.0 MPa, yet in another embodiment, the tensile modulus is between about 0.5 to about 1.5 MPa.
    Type: Application
    Filed: October 16, 2008
    Publication date: February 19, 2009
    Applicant: CIBA VISION CORPORATION
    Inventors: Paul Clement Nicolson, Richard Carlton Baron, Peter Chabrecek, John Court, Angelika Domschke, Hans Jorge Griesser, Arthur Ho, Jens Hopken, Bronwyn Glenice Laycock, Qin Liu, Dieter Lohmann, Gordon Francis Meijs, Eric Papaspiliotopoulos, Judy Smith Riffle, Klaus Schindhelm, Deborah Sweeney, Wilson Leonard Terry, JR., Jurgen Vogt, Lynn Cook Winterton
  • Extended Wear Ophthalmic Lens
    Publication number: 20090039535
    Abstract: A method for making a silicone hydrogel contact lens is provided. In one embodiment, a prepolymer mixture is polymerized in a lens mold in an atmosphere having less than about ppm oxygen to form a silicone hydrogel contact lens suitable for extended wear as characterized by producing less than 10% corneal swelling after a period of continuous wear of 7 days including normal sleep periods. In one embodiment, the prepolymer mixture comprises at least one oxyperm material containing hydrophilic groups, wherein the at least one oxyperm material is a siloxane-containing macromer or monomer, at least one ionperm material, and a cross-linking agent. In certain embodiments, the polymerization of the prepolymer mixture may be carried out in an atmosphere having less than about 1000 ppm oxygen.
    Type: Application
    Filed: October 16, 2008
    Publication date: February 12, 2009
    Applicant: CIBA Vison Corporation
    Inventors: Paul Clement Nicolson, Richard Carlton Baron, Peter Chabrecek, John Court, Angelika Domschke, Hans Jorg Griesser, Arthur Ho, Jens Hopken, Bronwyn Glenice Laycock, Qin Liu, Dieter Lohmann, Gordon Francis Meijs, Eric Papaspiliotopoulos, Judy Smith Riffle, Klaus Schindhelm, Deborah Sweeney, Wilson Leonard Terry, JR., Jurgen Vogt, Lynn Cook Winterton
  • TDS-OFDMA Communication Open-Loop Power Control
    Publication number: 20090010347
    Abstract: In a TDS-OFDM communications system, within a frame time, a transmitted signal comprising a preamble, a downlink sub-frame, and an uplink sub-frame. Within the downlink sub-frame, interposed between sub-frames are guard intervals comprising known sequences. The known sequences are used for an estimation of a received power. A method comprising the step of using a guard sequence in a guard interval of OFDM symbols of the received TDS-OFDM signals in the downlink to estimate a received signal power or an interference power is provided.
    Type: Application
    Filed: June 20, 2008
    Publication date: January 8, 2009
    Applicant: LEGEND SILICON CORP.
    Inventors: LIN YANG, Qin Liu
  • TDS-OFDMA COMMUNICATION CLOSED-LOOP POWER CONTROL
    Publication number: 20090010345
    Abstract: In a TDS-OFDMA communications system, a frame structure comprising: a frame such that within a frame time, a transmitted signal comprising a preamble, a downlink sub-frame, and an uplink sub-frame; and interposed between OFDM symbols are guard intervals comprising known sequences being used for an estimation of a received power.
    Type: Application
    Filed: June 20, 2008
    Publication date: January 8, 2009
    Applicant: LEGEND SILICON CORP.
    Inventors: Lin Yang, Qin Liu
  • TDS-OFDMA Communication System
    Publication number: 20090010346
    Abstract: In a TDS-OFDM communications system, a frame structure comprising: a frame such that within a frame time, a transmitted signal comprising a preamble, a downlink sub-frame, and an uplink sub-frame is provided.
    Type: Application
    Filed: June 20, 2008
    Publication date: January 8, 2009
    Applicant: LEGEND SILICON CORP.
    Inventors: Lin Yang, Qin Liu
  • Extended wear ophthalmic lens
    Patent number: 7468398
    Abstract: An ophthalmic lens suited for extended-wear periods of at least one day on the eye without a clinically significant amount of corneal swelling and without substantial wearer discomfort. The lens has a balance of oxygen permeability and ion or water permeability, with the ion or water permeability being sufficient to provide good on-eye movement, such that a good tear exchange occurs between the lens and the eye. A preferred lens is a copolymerization product of a oxyperm macromer and an ionoperm monomer. The invention encompasses extended wear contact lenses, which include a core having oxygen transmission and ion transmission pathways extending from the inner surface to the outer surface.
    Type: Grant
    Filed: June 7, 2005
    Date of Patent: December 23, 2008
    Assignee: CIBA Vision Corporation
    Inventors: Paul Clement Nicolson, Richard Carlton Baron, Peter Chabrecek, John Court, Angelika Domschke, Hans Jorg Griesser, Arthur Ho, Jens Hopken, Bronwyn Glenice Laycock, Qin Liu, Dieter Lohmann, Gordon Francis Meijs, Eric Papspiliotopoulos, Judy Smith Riffle, Klaus Schindhelm, Deborah Sweeney, Wilson Leonard Terry, Jr., Jurgen Vogt, Lynn Cook Winterton
  • TDS-OFDMA COMMUNICATION SYSTEM USER IDENTIFICATION
    Publication number: 20080279148
    Abstract: In a TDS-OFDM communications system for uplink wireless communication multiple accesses through sub-channelization, the system comprising: a plurality of users with each user using a portion of available time-frequency radio resources to achieve orthogonal multiple access; a plurality of available bandwidth, wherein the available bandwidth is divided into multiple sub-bands; at least one the sub-carrier in each sub-band. Inside the sub-band for each user, at least one guard sequence, being used as the guard interval between transmitted symbols.
    Type: Application
    Filed: May 8, 2008
    Publication date: November 13, 2008
    Applicant: LEGEND SILICON CORP.
    Inventors: Lin YANG, Qin LIU
  • TDS-OFDMAA COMMUNICATION SYSTEM UPLINK FREQUENCY SYNCHRONIZATION
    Publication number: 20080279294
    Abstract: TDS-OFDM can be applied to uplink wireless communication multiple accesses through sub-channelization, which means that each user uses a portion of available bandwidth to achieve orthogonal multiple access, where the sub-carriers in each sub-band may be contiguous or distributed. Inside the bandwidth for each user, at least one random or known sequence is used as the guard interval between transmitted symbols, where the sequence is limited inside the sub-band.
    Type: Application
    Filed: May 8, 2008
    Publication date: November 13, 2008
    Applicant: LEGEND SILICONE CORP.
    Inventors: LIN YANG, QIN LIU
  • TDS-OFDMA COMMUNICATION SYSTEM UPLINK TIMING SYNCHRONIZATION
    Publication number: 20080279295
    Abstract: In a TDS-OFDM communications system for uplink wireless communication multiple accesses through sub-channelization, the system comprising: a plurality of users with each user using a portion of available time-frequency radio resources to achieve orthogonal multiple access; a plurality of available bandwidth, wherein the available bandwidth is divided into multiple sub-bands; at least one the sub-carrier in each sub-band. Inside the sub-band for each user, at least one guard sequence, being used as the guard interval between transmitted symbols.
    Type: Application
    Filed: May 8, 2008
    Publication date: November 13, 2008
    Applicant: LEGEND SILICON CORP.
    Inventors: LIN YANG, QIN LIU
  • METHOD AND APPARATUS FOR CONSTRUCTING RECEIVER DIVERSITY FOR OFDM SIGNALS
    Publication number: 20080232482
    Abstract: In an orthogonal frequency division multiplex (OFDM) communication system, a method at a receiver end is provided. The method comprises the steps of: providing a frame; providing a guard interval (GI) associated with the frame, the GI having a length in a time domain larger or longer than a channel span; and extracting OFDM information comprising a first OFDM information starting from a first point after the channel span to a first end point within the frame.
    Type: Application
    Filed: March 19, 2007
    Publication date: September 25, 2008
    Applicant: LEGEND SILICON CORP.
    Inventor: Qin Liu
  • METHOD AND APPARATUS FOR COMPENSATING CHANNEL CHANGES FOR FAST FADING CHANNELS
    Publication number: 20080232519
    Abstract: A method for compensating channel changes in an OFDM system is provided. The method comprises the steps of: providing at least two PN sequences; and using the parameters of the at least two PN sequences for determining a set of compensated values of data disposed between the at least two PN sequences.
    Type: Application
    Filed: March 19, 2007
    Publication date: September 25, 2008
    Applicant: LEGEND SILICON CORP.
    Inventor: QIN LIU