Patents by Inventor Hao Zhang

Hao Zhang 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: 20090294885
    Abstract: A photodetector is provided with a method for fabricating a semiconductor nanoparticle embedded Si insulating film for photo-detection applications. The method provides a bottom electrode and introduces a semiconductor precursor and hydrogen. A thin-film is deposited overlying the substrate, using a high density (HD) plasma-enhanced chemical vapor deposition (PECVD) process. As a result, a semiconductor nanoparticle embedded Si insulating film is formed, where the Si insulating film includes either N or C elements. For example, the Si insulating film may be a non-stoichiometric SiOXNY thin-film, where (X+Y<2 and Y>0), or SiCX, where X<1. The semiconductor nanoparticles are either Si or Ge. Following the formation of the semiconductor nanoparticle embedded Si insulating film, an annealing process is performed.
    Type: Application
    Filed: May 29, 2008
    Publication date: December 3, 2009
    Inventors: Pooran Chandra Joshi, Hao Zhang, Apostolos T. Voutsas
  • Publication number: 20090290542
    Abstract: A method for establishing a bearer for a GSM network is disclosed in embodiments of the present invention. The method includes: receiving, by a Media Gateway, a message for adding a wireless side end point, assigning an IP address and a port number for a call and transmitting a response message containing the IP address and the port number assigned for the call; acquiring, by the Media Gateway, the IP address and the port number assigned for the call by the Base Station Controller via the Mobile Switching Center Server and establishing an IP bearer with the Base Station Controller. A device and a system for establishing a bearer for a GSM network are also disclosed in embodiments of the present invention. With the present invention, a full or part path transcoder-free operation may be realized, which can avoid quality reduction and transmission delay.
    Type: Application
    Filed: July 31, 2009
    Publication date: November 26, 2009
    Applicant: Huawei Technologies Co., Ltd.
    Inventors: Shaohua Luo, Zhenhua Liu, Hao Zhang
  • Patent number: 7597172
    Abstract: A hydraulic energy recovery and a mechanical drive system in one unit that also provides integral mounting of hydraulic pump/motors for primary drive, secondary drive, and pumps for cooling, lubrication, and low pressure systems along with a mounting position for a power take-off device.
    Type: Grant
    Filed: April 24, 2006
    Date of Patent: October 6, 2009
    Assignee: Parker-Hannifin Corporation
    Inventors: Joseph A. Kovach, James H. Blalock, Steven C. Rink, Stacy H. Turner, Hao Zhang
  • Publication number: 20090232449
    Abstract: An erbium (Er)-doped silicon (Si) nanocrystalline embedded silicon oxide (SiOx) waveguide and associated fabrication method are presented. The method provides a bottom layer, and forms an Er-doped Si nanocrystalline embedded SiOx film waveguide overlying the bottom layer, having a minimum optical attenuation at about 1540 nanometers (nm). Then, a top layer is formed overlying the Er-doped SiOx film. The Er-doped SiOx film is formed by depositing a silicon rich silicon oxide (SRSO) film using a high density plasma chemical vapor deposition (HDPCVD) process and annealing the SRSO film. After implanting Er+ ions, the Er-doped SiOx film is annealed again. The Er-doped Si nanocrystalline SiOx film includes has a first refractive index (n) in the range of 1.46 to 2.30. The top and bottom layers have a second refractive index, less than the first refractive index.
    Type: Application
    Filed: April 30, 2008
    Publication date: September 17, 2009
    Inventors: Hao Zhang, Pooran Chandra Joshi, Apostolos T. Voutsas
  • Patent number: 7579479
    Abstract: Compounds are provided which have the structure wherein Q is C or N, A is O or S, Z is O or a bond, X is CH or N and R1, R2, R2a, R2b, R2c, R3, Y, x, m, and n are as defined herein, which compounds are useful as antidiabetic, hypolipidemic, and antiobesity agents.
    Type: Grant
    Filed: August 22, 2005
    Date of Patent: August 25, 2009
    Assignee: Bristol-Myers Squibb Company
    Inventors: Peter T. Cheng, Pratik Devasthale, Yoon Jeon, Sean Chen, Hao Zhang
  • Publication number: 20090209252
    Abstract: A method for called party recovery in an MSC Pool, applied in a system that comprises an HLR and an MSC Pool including multiple MSC/VLRs, includes configuring a backup server for each MSC/VLR in the MSC Pool; if an MSC/VLR serving a user is down, the user has not initiated any calling service or location update and the user is called, further includes: the HLR sending a call signaling to the backup server of the MSC/VLR that is down; the backup server of the MSC/VLR initiating a paging request to the user and initiating a location update for the user to the HLR; the HLR registering user data of the user at the backup server and switching the MSC/VLR serving the user to the backup server. The present invention also discloses other methods, systems and devices, which can solve the problem of called party recovery in the MSC Pool.
    Type: Application
    Filed: March 10, 2009
    Publication date: August 20, 2009
    Applicant: Huawei Technologies Co., Ltd.
    Inventors: Runsheng Han, Hao Zhang, Xiaochun Cui, Sihai Ye
  • Publication number: 20090190644
    Abstract: A method for quickly diagnosing inter-communication problem of digital subscriber line transceivers, which records the interactive messages between central office xDSL terminal unit (xTU-C) and remote xDSL terminal unit (xTU-R), amends specific message of said interactive messages, executes interactive test utilizing amended message, and analyzes the result of said test to confirm the reason of inter-communication problem. The embodiments also provide an apparatus for quickly diagnosing inter-communication problem of digital subscriber line transceivers. The embodiments efficiently resolve the inter-communication problem between xTU-C and xTU-R which are different xDSL transceivers, provide convenience to telecommunication service provider and telecommunication device maintenance personnel, and save the cost.
    Type: Application
    Filed: March 30, 2009
    Publication date: July 30, 2009
    Inventors: Hao ZHANG, Binfeng WANG, Linzhi YAN, Liyuan SONG, Jian ZHANG, Zhongyu LIN, Jingfeng WANG
  • Publication number: 20090122743
    Abstract: The disclosure provides a method for realizing a Mobile Switch Center (MSC) pool, a system for realizing an MSC pool and a Media Gateway (MGW). The method for realizing an MSC pool includes: connecting with a Base Station Controllers (BSC)/Radio Network Controller (RNC), by a Media Gateway (MGW) through the use of a common signaling point; and upon receipt of a message whose destination signaling point is the common signaling point from the BSC/RNC, determining, by the MGW, a destination MSC server of the message according to ID information carried in the message, and sending the received message to the destination MSC server. According to the present invention, the networking scheme for an MSC pool may be implemented without upgrading any BSC/RNC. The flexibility of the networking scheme for mobile communication systems may be improved, and the traffic load of the subscribers may be shared.
    Type: Application
    Filed: January 20, 2009
    Publication date: May 14, 2009
    Applicant: Huawei Technologies Co., Ltd.
    Inventors: Sihai YE, Xiaochun CUI, Bei WANG, Zhenhua LIU, Hualin LUO, Hao ZHANG, Fudong ZENG
  • Publication number: 20090124466
    Abstract: The treadmill comprises a base frame adapted to rest on a surface which has left and right inner sides and left and right outer sides; a tread base having a frame including a front end, a rear end, and left and right outer surfaces; a linkage assembly having a first end connected to the front of the tread base and a second end connected to the base frame. The lateral width between the left and right outer sides of the base frame is substantially same with the lateral width between the left and right outer surfaces of the tread base; the linkage unit is approximately mounted in a space which is formed by the left and right inner surfaces of the base frame and the bottom of the tread base.
    Type: Application
    Filed: November 13, 2008
    Publication date: May 14, 2009
    Inventor: Hao Zhang
  • Patent number: 7516686
    Abstract: A twist drill for use, predominantly by non-professional do-it-yourself workers incorporates a flute architecture with an internal ridge for promoting the break up of chips into short length components. The tip of the twist drill includes an axial relief construction for improved performance across a wide variety of materials, and a highly sloped face for prompting transport of chips away from the drill tip.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: April 14, 2009
    Assignee: TG Tools United Company
    Inventors: Yuhong Wang, Ying-Hao Zhang
  • Publication number: 20090086985
    Abstract: An apparatus and a method for testing audio jacks of a sound card are applicable for detecting whether at least one audio jack of the sound card in a personal computer (PC) sounds normally. Each audio jack provides at least one sound channel for transmitting a sound signal. The testing system includes driving circuits and a plurality of light-emitting units. The driving circuits are electrically connected to the sound card and an external voltage source, and used to change a current transmitting path according to the received sound signal. The light-emitting units are electrically connected to the driving circuits, and receive the current generated from the driving circuit, such that the light-emitting units emit lights. A sound channel to be tested is selected first, and a sound signal is sent to the sound channel. After the testing apparatus receives the sound signal, the light-emitting units emit lights.
    Type: Application
    Filed: September 28, 2007
    Publication date: April 2, 2009
    Applicant: INVENTEC CORPORATION
    Inventors: Ding-Hao Zhang, Ding-Zhuo Wang, Zhong Shi, Tom Chen, Win-Harn Liu
  • Publication number: 20090080668
    Abstract: An apparatus and a method for testing a sound card are applicable for detecting whether a sound leakage problem occurs to a sounding interface of the sound card. The testing apparatus includes a switching circuit and a switching unit. The switching circuit is electrically connected to the sounding interface and a sound-receiving interface of the sound card respectively, and has a plurality of transfer paths. The switching circuit is used to receive a first and a second sound channel, and to connect the first and the second sound channel to corresponding transfer paths, so as to transmit the audio signal back to the sound-receiving interface. The switching unit is electrically connected to the sounding interface and the switching circuit, for receiving the first and the second sound channel. The switching unit alters the transfer paths in the switching circuit according to a first and/or a second switching audio signal.
    Type: Application
    Filed: September 20, 2007
    Publication date: March 26, 2009
    Applicant: INVENTEC CORPORATION
    Inventors: Hong-Liang Zhou, Ding-Hao Zhang, Ding-Zhuo Wang, Tom Chen, Win-Harn Liu
  • Publication number: 20090058266
    Abstract: A method is provided for fabricating a semiconductor nanoparticle embedded Si insulating film for short wavelength luminescence applications. The method provides a bottom electrode, and deposits a semiconductor nanoparticle embedded Si insulating film, including the element of N, O, or C, overlying the bottom electrode. After annealing, a semiconductor nanoparticle embedded Si insulating film has a peak photoluminescence (PL) at a wavelength in the range of 475 to 750 nanometers.
    Type: Application
    Filed: November 10, 2008
    Publication date: March 5, 2009
    Inventors: Pooran Chandra Joshi, Hao Zhang, Jiandong Huang, Apostolos T. Voutsas
  • Publication number: 20090059802
    Abstract: A device, system and method for diagnosing an interworking fault of x Digital Subscriber Line (xDSL) transceivers are disclosed. The xDSL transceivers in the system include an xTU-C and an xTU-R. The system further includes: a message collection module adapted to collect and save the interaction messages transmitted between the xTU-C and the xTU-R during the activation of an xDSL line; and a fault analysis module adapted to analyze the collected interaction messages to obtain the first diagnosis conclusion with respect to the interworking fault.
    Type: Application
    Filed: November 11, 2008
    Publication date: March 5, 2009
    Inventors: Hao Zhang, Binfeng Wang, Linzhi Yan, Liyuan Song, Jian Zhang, Zhongyu Lin, Jingfeng Wang
  • Publication number: 20090040599
    Abstract: A method is provided for optical amplification using a silicon (Si) nanocrystal embedded silicon oxide (SiOx) waveguide. The method provides a Si nanocrystal embedded SiOx waveguide, where x is less than 2, having a quantum efficiency of greater than 10%. An optical input signal is supplied to the Si nanocrystal embedded SiOx waveguide, having a first power at a first wavelength in the range of 700 to 950 nm. The Si nanocrystal embedded SiOx waveguide is pumped with an optical source having a second power at a second wavelength in a range of 250 to 550 nm. As a result, an optical output signal having a third power is generated, greater than the first power, at the first wavelength. In one aspect, the third power increases in response to the length of the waveguide strip.
    Type: Application
    Filed: October 28, 2008
    Publication date: February 12, 2009
    Inventors: Jiandong Huang, Pooran Chandra Joshi, Hao Zhang, Apostolos T. Voutsas
  • Publication number: 20080305566
    Abstract: A method is provided for forming a silicon (Si) nanocrystal embedded Si oxide electroluminescence (EL) device with a mid-bandgap transition layer. The method provides a highly doped Si bottom electrode, and forms a mid-bandgap electrically insulating dielectric film overlying the electrode. A Si nanocrystal embedded SiOx film layer is formed overlying the mid-bandgap electrically insulating dielectric film, where X is less than 2, and a transparent top electrode overlies the Si nanocrystal embedded SiOx film layer. The bandgap of the mid-bandgap dielectric film is about half that of the bandgap of the Si nanocrystal embedded SiOx film. In one aspect, the Si nanocrystal embedded SiOx film has a bandgap (Eg) of about 10 electronvolts (eV) and mid-bandgap electrically insulating dielectric film has a bandgap of about 5 eV. By dividing the high-energy tunneling processes into two lower energy tunneling steps, potential damage due to high power hot electrons is reduced.
    Type: Application
    Filed: August 22, 2008
    Publication date: December 11, 2008
    Inventors: Jiandong Huang, Pooran Chandra Joshi, Hao Zhang, Apostolos T. Voutsas
  • Publication number: 20080224164
    Abstract: A light emitting device using a silicon (Si) nanocrystalline Si insulating film is presented with an associated fabrication method. The method provides a doped semiconductor or metal bottom electrode. Using a high density plasma-enhanced chemical vapor deposition (HDPECVD) process, a Si insulator film is deposited overlying the semiconductor electrode, having a thickness in a range of 30 to 200 nanometers (nm). For example, the film may be SiOx, where X is less than 2, Si3Nx, where X is less than 4, or SiCx, where X is less than 1. The Si insulating film is annealed, and as a result, Si nanocrystals are formed in the film. Then, a transparent metal electrode is formed overlying the Si insulator film. An annealed Si nanocrystalline SiOx film has a turn-on voltage of less than 20 volts, as defined with respect to a surface emission power of greater than 0.03 watt per square meter.
    Type: Application
    Filed: May 23, 2008
    Publication date: September 18, 2008
    Inventors: Jiandong Huang, Pooran Chandra Joshi, Apostolos T. Voutsas, Hao Zhang
  • Publication number: 20080141346
    Abstract: In a distributed electronic messaging system authorized information comprising metadata concerning a message is passed along from one mail server to another mail server. A receiving computer determines if the sending computer has the necessary authorizations to pass along the metadata. If so, the authorized information is passed along with the message body, enabling repetitious actions to be eliminated. If the sending computer is not authorized to pass along the metadata, the metadata is stripped off the message, changed or annotated.
    Type: Application
    Filed: December 11, 2006
    Publication date: June 12, 2008
    Applicant: Microsoft Corporation
    Inventors: Jeffrey B. Kay, Trevor W. Freeman, Malcolm Erik Pearson, Eric D. Tribble, Hao Zhang
  • Publication number: 20080113838
    Abstract: A hydraulic drive comprising multiple gear motors each having a gear motor output shaft, and a common gear engaged by the output shafts of the multiple gear motors. Each hydraulic motor has a characteristic sinusoidal torque ripple out of phase with the characteristic sinusoidal torque ripple of at least one other hydraulic motor for cancelling torque ripple and thereby reducing the torque ripple at the common gear.
    Type: Application
    Filed: June 11, 2007
    Publication date: May 15, 2008
    Inventors: Joseph A. Kovach, Lisa K. Furches, Richard D. Kimpel, Hao Zhang, Raymond E. Collett, Lori A. Martinelli
  • Publication number: 20080101263
    Abstract: According to an exemplary embodiment, a duplexer includes a single-ended to differential filter, where the single-ended to differential filter includes a ladder stage coupled to an antenna port of the duplexer. The single-ended to differential filter further includes a balun stage coupled to the ladder stage. The single-ended to differential filter further includes a lattice stage coupled to the balun stage, where the balun stage is configured to provide single-ended to differential signal conversion between the ladder stage and the lattice stage. The lattice stage can be coupled to differential receive ports of the duplexer. The duplexer can further include a single-ended to single-ended filter coupled between the antenna port and a transmit port of the duplexer.
    Type: Application
    Filed: May 10, 2007
    Publication date: May 1, 2008
    Inventors: Bradley Paul Barber, Hao Zhang