Patents by Inventor Yonghua Liu

Yonghua 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).

  • Patent number: 11939280
    Abstract: A method for preparing isophorone diisocyanate by (1) reacting isophorone with hydrogen cyanide in the presence of a catalyst to obtain isophorone nitrile; (2) reacting the isophorone nitrile obtained in step (1) with ammonia gas and hydrogen in the presence of a catalyst to obtain isophorone diamine; and (3) subjecting the isophorone diamine to a phosgenation reaction to obtain the isophorone diisocyanate, wherein the content of impurities containing a secondary amine group in the isophorone diamine that undergoes the phosgenation reaction in step (3) is ?0.5 wt. The method reduces the content of hydrolyzed chlorine in the isophorone diisocyanate product, improves the yellowing resistance of the product, and the harm due to presence of hydrolyzed chlorine in the product is reduced.
    Type: Grant
    Filed: December 25, 2018
    Date of Patent: March 26, 2024
    Assignee: WANHUA CHEMICAL GROUP CO., LTD.
    Inventors: Yong Yu, Yonghua Shang, Lei Zhao, Wenbin Li, Ye Sun, Wei He, Xuelei Cui, Jingxu Wang, Degang Liu, Yuan Li
  • Patent number: 9832377
    Abstract: The disclosure discloses a data acquiring method and an electronic device thereof. The electronic device comprises an image acquisition unit, the image acquisition unit comprises a light-transparent module and a sensing module, and there is a first position relationship between the light-transparent module and the sensing module. The method comprises: obtaining a first image of a target scene acquired by the image acquisition unit, wherein an image resolution of the first image is first resolution; adjusting the image acquisition unit based on preset moving parameters; obtaining a second image of the target scene acquired by the image acquisition unit; obtaining a third image by processing the first image and the second image based on the moving parameters, wherein image resolution of the third image is third resolution and the third resolution is greater than the first resolution.
    Type: Grant
    Filed: August 13, 2014
    Date of Patent: November 28, 2017
    Assignee: Lenovo (Beijing) Co., Ltd.
    Inventor: Yonghua Liu
  • Patent number: 9779506
    Abstract: A method for processing information and an electronic device are provided. The electronic device includes a camera device, an image is acquired by the camera device as a preview image, and a first distance between the camera device and a shooting object which is shot in the preview image is obtained; the preview image is detected, and at least one area meeting a predetermined condition is obtained, where the first distance corresponding to the at least one area falls within the first predetermined distance scope.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: October 3, 2017
    Assignee: Lenovo (Beijing) Co., Ltd.
    Inventor: Yonghua Liu
  • Publication number: 20160292871
    Abstract: A method for processing information and an electronic device are provided. The electronic device includes a camera device, an image is acquired by the camera device as a preview image, and a first distance between the camera device and a shooting object which is shot in the preview image is obtained; the preview image is detected, and at least one area meeting a predetermined condition is obtained, where the first distance corresponding to the at least one area falls within the first predetermined distance scope.
    Type: Application
    Filed: August 28, 2015
    Publication date: October 6, 2016
    Applicant: Lenovo (Beijing) Co., Ltd.
    Inventor: Yonghua LIU
  • Patent number: 9414039
    Abstract: An information processing method and device applied to an electronic device are provided. The electronic device includes a first collecting unit located on a first surface and a second collecting unit located on a second surface. The method includes detecting a first input; outputting a first media data collected by the first collecting unit when the first input satisfies a first predetermined condition; detecting a second input; and switching the output into a second media data collected by the second collecting unit when the second input satisfies a second predetermined condition, wherein the first media data and the second media data have the same media type, the first media data corresponds to a first collecting time parameter, the second media data corresponds to a second collecting time parameter, and the first collecting time parameter is the same as the second collecting time parameter.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: August 9, 2016
    Assignee: LENOVO (BEIJING) CO., LTD.
    Inventors: Yonghua Liu, Yuru Jin
  • Patent number: 9302927
    Abstract: A vacuum melting furnace for infrared glass, includes an upper furnace body and a lower furnace body that can be connected with each other or isolated from each other. Vacuum melting of the infrared glass is achieved in the upper furnace body wherein the influence of water in the environment is eliminated. The vacuum negative pressure environments can promote separation of hydroxyl in the structure, which achieves removing of hydroxyl in the glass, and then discharging of the molten infrared glass is conducted at atmospheric pressure in the lower furnace body. By using the vacuum melting furnace for infrared glass, infrared glass with good spectrum transmission performance can be obtained with improved property stability and optical homogeneity, which facilitates the preparation and molding of large sized and special-shaped infrared glass products.
    Type: Grant
    Filed: June 17, 2014
    Date of Patent: April 5, 2016
    Assignee: CHINA BUILDING MATERIALS ACADEMY
    Inventors: Huifeng Zhao, Chengkui Zu, Bin Han, Yonghua Liu, Jiang Chen, Yanhang Wang, Yangli Jin, Hua Zhao
  • Publication number: 20150266763
    Abstract: A vacuum melting furnace for infrared glass, includes an upper furnace body and a lower furnace body that can be connected with each other or isolated from each other. Vacuum melting of the infrared glass is achieved in the upper furnace body wherein the influence of water in the environment is eliminated. The vacuum negative pressure environments can promote separation of hydroxyl in the structure, which achieves removing of hydroxyl in the glass, and then discharging of the molten infrared glass is conducted at atmospheric pressure in the lower furnace body. By using the vacuum melting furnace for infrared glass, infrared glass with good spectrum transmission performance can be obtained with improved property stability and optical homogeneity, which facilitates the preparation and molding of large sized and special-shaped infrared glass products.
    Type: Application
    Filed: June 17, 2014
    Publication date: September 24, 2015
    Inventors: Huifeng ZHAO, Chengkui ZU, Bin HAN, Yonghua LIU, Jiang CHEN, Yanhang WANG, Yangli JIN, Hua ZHAO
  • Publication number: 20150092072
    Abstract: The disclosure discloses a data acquiring method and an electronic device thereof. The electronic device comprises an image acquisition unit, the image acquisition unit comprises a light-transparent module and a sensing module, and there is a first position relationship between the light-transparent module and the sensing module. The method comprises: obtaining a first image of a target scene acquired by the image acquisition unit, wherein an image resolution of the first image is first resolution; adjusting the image acquisition unit based on preset moving parameters; obtaining a second image of the target scene acquired by the image acquisition unit; obtaining a third image by processing the first image and the second image based on the moving parameters, wherein image resolution of the third image is third resolution and the third resolution is greater than the first resolution.
    Type: Application
    Filed: August 13, 2014
    Publication date: April 2, 2015
    Inventor: Yonghua Liu
  • Publication number: 20150049214
    Abstract: An information processing method and device applied to an electronic device are provided. The electronic device includes a first collecting unit located on a first surface and a second collecting unit located on a second surface. The method includes detecting a first input; outputting a first media data collected by the first collecting unit when the first input satisfies a first predetermined condition; detecting a second input; and switching the output into a second media data collected by the second collecting unit when the second input satisfies a second predetermined condition, wherein the first media data and the second media data have the same media type, the first media data corresponds to a first collecting time parameter, the second media data corresponds to a second collecting time parameter, and the first collecting time parameter is the same as the second collecting time parameter.
    Type: Application
    Filed: March 28, 2014
    Publication date: February 19, 2015
    Applicant: LENOVO (BEIJING) CO., LTD.
    Inventors: Yonghua Liu, Yuru Jin
  • Patent number: 8874910
    Abstract: The present invention provides an encryption method in which the encryption device stores data to be encrypted received via the input/output interface in its own memory, converts the data to be encrypted in the memory into a format required by the output device and transmits the converted data to the output device via the management interface, and the output device outputs the received information. The present invention also provides an encryption device for implementing the above method. The encryption device determines whether confirmation information has been received from a management interface, encrypts the data to be encrypted in the memory if the answer is positive, while performs no encryption or prompting to input correct confirmation information if the answer is negative. With the present invention, the user is allowed to view the contents to be actually encrypted, thereby avoiding such a case as signature counterfeiting or tampering.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: October 28, 2014
    Assignees: Legend Holdings Ltd., Lenovo (Beijing) Limited
    Inventor: Yonghua Liu
  • Patent number: 8717065
    Abstract: A system and method are provided for transmission of data bits across a data bus. To reduce power usage, noise, or some combination of the two, the data bus utilizes differential transmission using a three level signal in which a reference signal signifies no difference between input bits. Before the signals are transmitted an analysis is made to choose which one of a set of predetermined polarity reversal combinations is advantageous to encode the data bits. The data bits are so encoded and a formatting value F associated with the chosen polarity reversal is differentially transmitted with the encoded bits over the data bus. The three level differential signal is received at the far end of the bus, the encoded bits are recovered and decoded with use of F. The system and method achieves up to N bits transmitted per N data lines.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: May 6, 2014
    Inventor: Yonghua Liu
  • Publication number: 20140016389
    Abstract: A semiconductor device includes a Dynamic Random Access Memory (DRAM) memory array. The DRAM memory array includes a plurality of DRAM memory cells. Each of the DRAM memory cells includes a capacitor. Switching circuitry within the semiconductor device is configured to be switched to a state in which the switching circuitry connects capacitors of at least two of the DRAM memory cells together to provide a bulk capacitance between a first node and a second node.
    Type: Application
    Filed: March 15, 2013
    Publication date: January 16, 2014
    Applicant: MOSAID TECHNOLOGIES INCORPORATED
    Inventors: Yonghua LIU, James KOSOLOWSKI
  • Publication number: 20130223559
    Abstract: A system and method are provided for transmission of data bits across a data bus. To reduce power usage, noise, or some combination of the two, the data bus utilizes differential transmission using a three level signal in which a reference signal signifies no difference between input bits. Before the signals are transmitted an analysis is made to choose which one of a set of predetermined polarity reversal combinations is advantageous to encode the data bits. The data bits are so encoded and a formatting value F associated with the chosen polarity reversal is differentially transmitted with the encoded bits over the data bus. The three level differential signal is received at the far end of the bus, the encoded bits are recovered and decoded with use of F. The system and method achieves up to N bits transmitted per N data lines.
    Type: Application
    Filed: July 31, 2012
    Publication date: August 29, 2013
    Inventor: Yonghua Liu
  • Publication number: 20120258561
    Abstract: In embodiments of the present invention an undoped amorphous, nanocrystalline or microcrystalline semiconductor layer and a heavily doped amorphous, nanocrystalline, or microcrystalline semiconductor layer are formed on a monocrystalline silicon lamina. The lamina is the base region of a photovoltaic cell, while the amorphous, nanocrystalline or monocrystalline layers serve to passivate the surface of the lamina, reducing recombination at this surface. In embodiments, the heavily doped layer additionally serves as either the emitter of the cell or to provide electrical contact to the base layer. The undoped and heavily doped layers are deposited at low temperature, for example about 150 degrees C. or less with hydrogen dilution. This low temperature allows use of low-temperature materials and methods, while increased hydrogen dilution improves film quality and/or conductivity.
    Type: Application
    Filed: April 11, 2011
    Publication date: October 11, 2012
    Applicant: TWIN CREEKS TECHNOLOGIES, INC.
    Inventors: Jian Li, Venkatesan Murali, Yonghua Liu, Dong Xu
  • Patent number: 8274311
    Abstract: A system and method are provided for transmission of data bits across a data bus. To reduce power usage, noise, or some combination of the two, the data bus utilizes differential transmission using a three level signal in which a reference signal signifies no difference between input bits. Before the signals are transmitted an analysis is made to choose which one of a set of predetermined polarity reversal combinations is advantageous to encode the data bits. The data bits are so encoded and a formatting value F associated with the chosen polarity reversal is differentially transmitted with the encoded bits over the data bus. The three level differential signal is received at the far end of the bus, the encoded bits are recovered and decoded with use of F. The system and method achieves up to N bits transmitted per N data lines.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: September 25, 2012
    Inventor: Yonghua Liu
  • Patent number: 8063608
    Abstract: The present invention provides a charge management method for a battery in a mobile terminal having the steps of: setting an initial charge start point; setting a statistic analysis interval for gathering the remaining capacity of the battery at time of start and creating a statistic array for recording the remaining capacity of the battery upon each power-on operation in the statistic analysis interval; reading current remaining capacity of the battery and storing it sequentially in the statistic array; calculating a new charge start point based on a predetermined adaptive algorithm; and updating the initial charge start point with the new charge start point. The present invention also provides a charge management apparatus for a battery in a mobile terminal. With the present invention, it is possible to set an optimal charge start point through measurements, and thus lengthen the battery's lifetime.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: November 22, 2011
    Assignee: Lenovo (Beijing) Limited
    Inventor: Yonghua Liu
  • Publication number: 20110185173
    Abstract: The present invention provides an encryption method in which the encryption device stores data to be encrypted received via the input/output interface in its own memory, converts the data to be encrypted in the memory into a format required by the output device and transmits the converted data to the output device via the management interface, and the output device outputs the received information. The present invention also provides an encryption device for implementing the above method. The encryption device determines whether confirmation information has been received from a management interface, encrypts the data to be encrypted in the memory if the answer is positive, while performs no encryption or prompts to input correct confirmation information if the answer is negative. With the present invention, the user is allowed to view the contents to be actually encrypted, thereby avoiding such a case as signature counterfeiting or tampering.
    Type: Application
    Filed: December 8, 2005
    Publication date: July 28, 2011
    Inventor: Yonghua Liu
  • Publication number: 20100223413
    Abstract: A system and method are provided for transmission of data bits across a data bus. To reduce power usage, noise, or some combination of the two, the data bus utilizes differential transmission using a three level signal in which a reference signal signifies no difference between input bits. Before the signals are transmitted an analysis is made to choose which one of a set of predetermined polarity reversal combinations is advantageous to encode the data bits. The data bits are so encoded and a formatting value F associated with the chosen polarity reversal is differentially transmitted with the encoded bits over the data bus. The three level differential signal is received at the far end of the bus, the encoded bits are recovered and decoded with use of F. The system and method achieves up to N bits transmitted per N data lines.
    Type: Application
    Filed: February 27, 2009
    Publication date: September 2, 2010
    Inventor: Yonghua Liu
  • Publication number: 20090288161
    Abstract: The present invention discloses a method for establishing a trusted running environment in a computer. A trusted file authentication module and a trusted process memory code authentication module are preset in operation system (OS) of the computer and a secured OS is loaded and run. The trusted file authentication module intercepts all file operation behaviors, checks whether current file to be operated is a trusted file or not, and processes the file according to its operation type if it is trusted, otherwise processes the file after its eligibility is verified; the trusted process memory code authentication module authenticates on timing whether the running state and the integrality for all process code are normal or not; if any process is abnormal, giving an alarm, saving field data run by the process and closing down the process; otherwise continuing to run normally.
    Type: Application
    Filed: July 11, 2005
    Publication date: November 19, 2009
    Applicant: LENOVO (BEIJING) LIMITED # 6 CHUANGYE ROAD
    Inventors: Wei Wei, Chaoran Peng, Ping Yin, Yonghua Liu
  • Patent number: D882840
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: April 28, 2020
    Assignee: SHENZHEN HAIYISHENLAN TECHNOLOGY CO., LTD
    Inventor: Yonghua Liu