Patents by Inventor Li Hao

Li Hao 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: 7894214
    Abstract: A power converter includes at least one electric control switch, an electric current detecting and converting unit, a power controller, and a voltage detecting and controlling unit at the primary side; and a synchronous rectifying circuit, two MOSFETs, and an oscillating loop. During the actual operation, electric current detecting and converting unit outputs an AC voltage signal to the power controller and outputs a DC voltage signal to the voltage detecting and controlling unit, and then voltage detecting and controlling unit compares with a reference voltage to turn off the synchronous rectifying circuit at the no-load mode and to rectify via a body diodes of the MOSFETs. Accordingly, the power converter can reduce the power wastage at the no-load mode to be energy-saving.
    Type: Grant
    Filed: October 7, 2009
    Date of Patent: February 22, 2011
    Assignee: Power Mate Technology Co., Ltd.
    Inventors: Lien-Hsing Chen, Li-Hao Liu
  • Publication number: 20100231797
    Abstract: Techniques for video data delivery are provided. A first data stream is received that includes a plurality of video data frames. At least one corrupted video data frame is detected in the first data stream. At least one replacement video data frame is generated for the corrupted video data frame(s) based at least on a non-corrupted video data frame received in the first data stream prior to the corrupted video data frame(s). The replacement video data frame(s) include a modified form of the non-corrupted video data frame, and are configured to provide a smooth scene transition from the non-corrupted video data frame. The corrupted video data frame(s) are replaced in the first data stream with the generated replacement video data frame(s) to generate a second data stream.
    Type: Application
    Filed: September 16, 2009
    Publication date: September 16, 2010
    Applicant: BROADCOM CORPORATION
    Inventors: Wenqing Jiang, Zhengran Li, Hua Jiang, Li Hao
  • Publication number: 20090300849
    Abstract: The present invention relates to a method of extracting oil of cloth via supercritical fluid, comprises the steps of: a cloth to be extracted is provided in an extracting tank; a gas is filled into a storing tank; a water-cooling machine is provided and served to cool down the temperature of the gas; a pump is provided and served to compress the gas; a water-heating machine is provided and served to raise the temperature of the gas so the gas becomes a supercritical fluid; and the supercritical fluid is inserted into the extracting tank for extracting the oil. By the above mentioned method, the cleanness of the cleanroom wiping cloth can be immediately sensed and obtained, and the gas can be recycled for achieving energy-saving.
    Type: Application
    Filed: April 27, 2009
    Publication date: December 10, 2009
    Inventors: Po-Jen Cheng, Li-Hao Cheng, Chih-Huang Cheng
  • Publication number: 20090134305
    Abstract: A footpad includes an anti-slip pad and a fixing member. The anti-slip pad provides an inner recess. The fixing member has a base corresponding to the inner groove, extending outward a plurality of holding pawls from a lateral side of the base and the holding pawls are disposed at the circumference edge of the lateral side equidistantly in a way of spacing apart a gap from each other. The fixing member is capable of being inserted into the inner recess and the holding pawls are capable of engaging with the base of a product such as the telephone set, the stationery or the office article easily without loosening to perform the function of resisting slip.
    Type: Application
    Filed: November 27, 2007
    Publication date: May 28, 2009
    Inventors: CHIEN-SHENG TSAI, Li-Hao Lu
  • Publication number: 20090135634
    Abstract: A synchronous rectifier drive circuit includes a primary side and a secondary side. The primary side has a first coil winding, a first MOSFET, an auxiliary MOSFET, an auxiliary capacitor, and an input power source. The secondary side has a second coil winding, a DC voltage source, a second MOSFET, a third MOSFET, a fourth MOSFET, a fifth MOSFET, and an inductor. The gate of the second MOSFET is connected with the source of the fourth MOSFET. The gate of the third MOSFET is connected with the source of the fifth MOSFET. The inductor has two ends, one of which is connected with the drain of the third MOSFET. Accordingly, the synchronous rectifier drive circuit can lessen the variation of pulse wave of the drive voltage and refrain the surge voltage to protect the electronic elements.
    Type: Application
    Filed: February 28, 2008
    Publication date: May 28, 2009
    Applicant: POWER MATE TECHNOLOGY CO., LTD.
    Inventors: Lien-Hsing Chen, Li-Hao Liu
  • Publication number: 20090097771
    Abstract: Methods, systems, and apparatuses for averaging data in packed format are provided. The data may be image data, such as data words containing color-specific data portions representative of pixels of a captured image. A first data word containing first image data is received. A second data word containing second image data is received. A logical AND of the first data word and the second data word is performed to generate a third data word. A logical exclusive OR (XOR) of the first data word and the second data word is performed to generate a fourth data word. A right shift of the fourth data word is performed. The third data word and the right shifted fourth data word are summed to generate a fifth data word that is an average of the first and second data words.
    Type: Application
    Filed: October 16, 2007
    Publication date: April 16, 2009
    Applicant: BROADCOM CORPORATION
    Inventors: Wenqing Jiang, Ying Cao, Li Hao, Weiping Pan
  • Publication number: 20090080770
    Abstract: Methods, systems, and apparatuses for processing captured image data are described. A first array of pixel data values corresponding to a captured image is received. The first array is segmented into a plurality of N by M array portions. A subsample pattern is selected for each N by M array portion of the plurality of N by M array portions from a plurality of subsample patterns so that each N by M array portion has a corresponding selected subsample pattern. The subsample patterns may be selected in a random fashion, or other fashion, to avoid noise patterns in a spatial domain (same image frame) and/or in a time domain (across multiple image frames). Each N by M array portion is subsampled according to the corresponding selected subsample pattern to generate a second array of filtered pixel data values. The second array of filtered pixel data values corresponds to a down-sized version of the captured image.
    Type: Application
    Filed: September 24, 2007
    Publication date: March 26, 2009
    Applicant: BROADCOM CORPORATION
    Inventors: Wenqing Jiang, Ying Cao, Li Hao, Weiping Pan
  • Patent number: 7509444
    Abstract: This invention discloses a data access device for using in computer of power off status, which comprises a power multiplexer, a DC to DC converter, a serial bus signal to storage interface signal controller, a data storage interface signal multiplexer, and a controller. Therefore, if controller detects an external device wants to access data storage device of computer at power off, it will control power multiplexer to retrieve the standby power of the power device and process power transformation to provide a required power for driving the storage device, and by using serial bus signal to storage interface signal controller, external device can access the data from storage device at power off.
    Type: Grant
    Filed: September 14, 2005
    Date of Patent: March 24, 2009
    Assignee: Industrial Technology Research Institute
    Inventors: Chih-Yang Chiu, Ching-Chin Huang, Teng-Chieh Yang, Tsahn-Yih Chang, Yang-Chih Huang, Li-Hao Hsiao
  • Publication number: 20090066820
    Abstract: Methods, systems, and apparatuses for filtering captured image data are provided. An array of pixel data values corresponding to a captured image is received. The pixel data values in the received array are pixel data values of a first color of the captured image. A filter function is performed on a portion of the pixel data values of the array that are located in Bayer pattern pixel locations of the array for the first color. Subsequent arrays of pixel data values corresponding to further colors of the captured image may be received and filtered in a similar manner. Furthermore, further captured images in a video stream may be received and filtered in a similar manner, to generate a stream of filtered video images.
    Type: Application
    Filed: September 6, 2007
    Publication date: March 12, 2009
    Applicant: BROADCOM CORPORATION
    Inventors: Wenqing Jiang, Ying Cao, Li Hao, Weiping Pan
  • Patent number: 7272163
    Abstract: This invention involves a two-level variable chip rate spreading and despreading method used in CDMA systems. The total spreading gain is the product of the two level spreading factors. Orthogonal sequences, ZCZ sequences and Pseudo-Noise (PN) sequences can be employed as the first- and second-level spreading codes. By employing the two-level spreading method, the interference existing in the systems can be suppressed efficiently and the system performance can be improved significantly.
    Type: Grant
    Filed: February 27, 2002
    Date of Patent: September 18, 2007
    Assignees: The Research Institute of Telecommunications Transmission, Southwest Jiao Tong University
    Inventors: Li Hao, Pingzhi Fan
  • Publication number: 20060224801
    Abstract: This invention discloses a data access device for using in computer of power off status, which comprises a power multiplexer, a DC to DC converter, a serial bus signal to storage interface signal controller, a data storage interface signal multiplexer, and a controller. Therefore, if controller detects an external device wants to access data storage device of computer at power off, it will control power multiplexer to retrieve the standby power of the power device and process power transformation to provide a required power for driving the storage device, and by using serial bus signal to storage interface signal controller, external device can access the data from storage device at power off.
    Type: Application
    Filed: September 14, 2005
    Publication date: October 5, 2006
    Applicant: Industrial Technology Research Institute
    Inventors: Chih-Yang Chiu, Ching-Chin Huang, Teng-Chieh Yang, Tsahn-Yih Chang, Yang-Chih Huang, Li-Hao Hsiao
  • Publication number: 20020154680
    Abstract: This invention involves a two-level variable chip rate spreading and despreading method used in CDMA systems. The total spreading gain is the product of the two level spreading factors. Orthogonal sequences, ZCZ sequences and Pseudo-Noise (PN) sequences can be employed as the first- and second-level spreading codes. By employing the two-level spreading method, the interference existing in the systems can be suppressed efficiently and the system performance can be improved significantly.
    Type: Application
    Filed: February 27, 2002
    Publication date: October 24, 2002
    Applicant: The Research Institute of Telecommunications Transmission
    Inventors: Li Hao, Pingzhi Fan
  • Patent number: 5790713
    Abstract: A three-dimensional computer graphics image generator has an image input unit for inputting an image of a 3-D object into the CG image generator; a display unit for displaying the input image; a characteristic point indication unit for externally specifying characteristic points on the displayed image; and a 3-D object recognition unit for providing 3-D data according to the characteristic-point-added input image. According to the 3-D data, the 3-D CG image generator provides a 3-D CG image that faithfully represents the object.
    Type: Grant
    Filed: September 16, 1996
    Date of Patent: August 4, 1998
    Assignee: Fujitsu Limited
    Inventors: Hiroshi Kamada, Ying-Li Hao, Hideki Yanagishita