Patents by Inventor Hua Chao

Hua Chao 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: 20140203858
    Abstract: An interpolator includes interpolation cells. Each interpolation cell includes a first driving unit and a second driving unit. The first driving unit includes a first pulling-up circuit for selectively coupling an output terminal to a high voltage, a first pulling-down circuit for selectively coupling the output terminal to a low voltage, and a pair of first switches for selectively enabling/disabling the first pulling-up circuit and the first pulling-down circuit. The second driving unit includes a second pulling-up circuit for selectively coupling the output terminal to the high voltage, a second pulling-down circuit for selectively coupling the output terminal to the low voltage, and a pair of second switches for selectively enabling/disabling the second pulling-up circuit and the second pulling-down circuit. Driving capabilities of the first and second pulling-up circuits are not all equal, and/or driving capabilities of the first and second pulling-down circuits are not all equal.
    Type: Application
    Filed: January 22, 2013
    Publication date: July 24, 2014
    Applicant: MEDIATEK INC.
    Inventors: Yi-Hsien CHO, Kuan-Hua CHAO
  • Patent number: 8765600
    Abstract: A semiconductor device having a gate on a substrate with source/drain (S/D) regions adjacent to the gate. A first dielectric layer overlays the gate and the S/D regions, the first dielectric layer having first contact holes over the S/D regions with first contact plugs formed of a first material and the first contact plugs coupled to respective S/D regions. A second dielectric layer overlays the first dielectric layer and the first contact plugs. A second contact hole formed in the first and second dielectric layers is filled with a second contact plug formed of a second material. The second contact plug is coupled to the gate and interconnect structures formed in the second dielectric layer, the interconnect structures coupled to the first contact plugs. The second material is different from the first material, and the second material has an electrical resistance lower than that of the first material.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: July 1, 2014
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chung-Long Chang, Chih-Ping Chao, Chun-Hung Chen, Hua-Chao Tseng, Jye-Yen Cheng, Harry-Hak-Lay Chuang
  • Publication number: 20140145708
    Abstract: A detecting circuit includes: a testing signal generator, arranged to selectively generate a testing signal having a first signal edge or a second signal edge to a connecting port; and a detector, arranged to detect a first detect signal on the connecting port after the testing signal having the first signal edge is coupled to the connecting port, and to detect a second detect signal on the connecting port after the testing signal having the second signal edge is coupled to the connecting port; wherein the detector is further arranged to determine if an external circuit element is coupled between the connecting port and a reference voltage according to the first detect signal and the second detect signal.
    Type: Application
    Filed: November 13, 2013
    Publication date: May 29, 2014
    Applicant: MEDIATEK INC.
    Inventors: Chien-Hua Wu, Kuan-Hua Chao
  • Patent number: 8722745
    Abstract: The invention relates to a sulfur-containing compound and the preparation thereof. The invention also relates to the uses of the sulfur-containing compound in inhibiting inducible nitric oxide synthase and/or cyclooxygenase-2 and in treating the diseases associated with inducible nitric oxide synthase and/or cyclooxygenase-2. This invention also describes a series of chemical analogues of the said sulfur-containing compound and the preparation of these compounds.
    Type: Grant
    Filed: February 6, 2013
    Date of Patent: May 13, 2014
    Assignee: National Sun Yat-Sen University
    Inventors: Jyh-Horng Sheu, Chih-Hua Chao, Zhi-Hong Wen
  • Publication number: 20140022976
    Abstract: Embodiments of the present invention provide a method and apparatus for performing MBMS service communications and a method and apparatus for receiving an MBMS service. Specifically, there is provided a method for performing MBMS service communications, comprising acquiring location area information of an MBMS service distribution; and notifying a UE of the location area information of the MBMS service distribution. Further, there is provided a method for receiving an MBMS service, comprising receiving location area information of an MBMS service distribution; comparing location information of a UE with the location area information of the MBMS service distribution; and determining whether to read an MCCH and MCCH information change notification based on a comparison result.
    Type: Application
    Filed: March 28, 2012
    Publication date: January 23, 2014
    Applicant: ALCATEL LUCENT
    Inventors: Hua Chao, Zhongji Hu, He Wang, Philippe Godin
  • Publication number: 20140011325
    Abstract: A semiconductor package and a manufacturing method thereof are provided. The semiconductor package includes a substrate, a semiconductor element, a package body and a conductive part. The substrate has an electrical contact. The semiconductor element is disposed on the substrate. The package body covers the semiconductor element and defines a through hole from which the electrical contact is exposed. Wherein, the package body includes a resin body and a plurality of fiber layers. The fiber layers are disposed in the resin body and define a plurality of fiber apertures which is arranged as an array. The conductive part is electrically connected to the substrate through the through hole.
    Type: Application
    Filed: September 3, 2013
    Publication date: January 9, 2014
    Applicant: ADVANCED SEMICONDUCTOR ENGINEERING, INC.
    Inventors: Shin-Hua CHAO, Chao-Yuan LIU, Hui-Ying HSIEH, Chih-Ming CHUNG
  • Patent number: 8619938
    Abstract: A clock generation device provided for a transmitter is provided and comprises a clock generator, a calculator and a first phase locked loop (PLL) circuit. The clock generator generates a first clock signal. The calculator calculates a frequency difference between the first and second clock signals. The first PLL circuit generates an output clock signal according to a first reference clock signal related to the first clock signal, and a frequency of the output clock signal is changed according to the frequency difference. The transmitter transmits data according to the output clock signal.
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: December 31, 2013
    Assignee: Mediatek Inc.
    Inventors: Kuan-Hua Chao, Chuan Liu, Tse-Hsiang Hsu
  • Publication number: 20130322577
    Abstract: A detecting circuit includes: a first offset generating circuit, arranged to apply a first offset to an input signal pair and accordingly generate a first output signal pair; and a first sampling circuit, coupled to the first offset generating circuit, the first sampling circuit arranged to sample the first output signal pair to generate a first sampling signal, wherein the first sampling signal is utilized to identify a data signal on the input signal pair, and the first sampling circuit is controlled by a first signal that is irrelevant to the input signal pair.
    Type: Application
    Filed: August 19, 2013
    Publication date: December 5, 2013
    Applicant: MEDIATEK INC.
    Inventors: Kuan-Hua Chao, Tzu-Li Hung, Yu-Bang Nian
  • Patent number: 8546950
    Abstract: A semiconductor package and a manufacturing method thereof are provided. The semiconductor package includes a substrate, a semiconductor element, a package body and a conductive part. The substrate has an electrical contact. The semiconductor element is disposed on the substrate. The package body covers the semiconductor element and defines a through hole from which the electrical contact is exposed. Wherein, the package body includes a resin body and a plurality of fiber layers. The fiber layers are disposed in the resin body and define a plurality of fiber apertures which is arranged as an array. The conductive part is electrically connected to the substrate through the through hole.
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: October 1, 2013
    Assignee: Advanced Semiconductor Engineering Inc.
    Inventors: Shin-Hua Chao, Chao-Yuan Liu, Hui-Ying Hsieh, Chih-Ming Chung
  • Patent number: 8537937
    Abstract: A detecting circuit includes: a first offset generating circuit arranged to apply a first offset to an input signal pair comprising a positive input signal and a negative input signal and accordingly generate a first output signal pair comprising a first positive output signal and a first negative output signal; and a first sampling circuit coupled to the first offset generating circuit, the first sampling circuit arranged to sample a difference in voltage between the first positive output signal and the first negative output signal to generate a first sampling signal, wherein the first sampling signal is utilized to identify a data signal on the input signal pair.
    Type: Grant
    Filed: January 9, 2011
    Date of Patent: September 17, 2013
    Assignee: Mediatek Inc.
    Inventors: Kuan-Hua Chao, Tzu-Li Hung, Yu-Bang Nian
  • Patent number: 8526559
    Abstract: A clock generation circuit for a transmitter which transmits data according to an output clock signal is provided. The clock generation circuit include a clock generator and a phase locked loop (PLL). The clock generator generates a first clock signal. The PLL initially generates the output clock signal according to the first clock signal. When a frequency of the output clock signal generated according to the first clock signal is not within a range required for specification of the transmitter, the PLL generates the output clock signal according to a second clock signal.
    Type: Grant
    Filed: March 25, 2009
    Date of Patent: September 3, 2013
    Assignee: Mediatek Inc.
    Inventors: Kuan-Hua Chao, Shiue-Shin Liu, Tse-Hsiang Hsu
  • Publication number: 20130184013
    Abstract: The present invention proposes a new method, a network device, and a terminal device of paging a terminal device in a communication system. The receiving a paging initiation present invention determines the paged object based on the group ID and/or the device ID of the paged terminal device, further, defines a specific paging occasion for the terminal device having group function; at the specific paging occasion paging message comprising the group ID and/or the device ID of the paged terminal device is sent; further, paging reason is inserted into the paging message; wherein the terminal device receives the paging message at the specific paging occasion defined by the system; and further reads the paging reason and responds accordingly to complete the paging procedure after the group ID and/or the device ID of its own is read. This paging mechanism of this invention solves the problem of paging determining a paging a group of terminal devices.
    Type: Application
    Filed: September 14, 2011
    Publication date: July 18, 2013
    Applicant: ALCATEL LUCENT
    Inventors: Hua Chao, Yonggang Wang, He Wang, Zhongji Hu
  • Patent number: 8451971
    Abstract: A clock generation circuit is provided and includes a phase locked loop (PLL) and a calibrator. The PLL is arranged to receive a first clock signal and generate the output clock signal. The PLL adjusts the frequency of the output clock signal according to a control signal. The calibrator is arranged to receive the output clock signal and a second clock signal, execute a frequency calibration between the output clock signal and the second clock signal, and generate the control signal according to results of the frequency calibration.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: May 28, 2013
    Assignee: Mediatek Inc.
    Inventors: Kuan-Hua Chao, Shiue-Shin Liu, Jeng-Horng Tsai, Chih-Ching Chen, Chuan Liu, Tse-Hsiang Hsu
  • Patent number: 8451764
    Abstract: The present invention discloses a system structure for supporting Evolved Multimedia Broadcast/Multicast Service (Evolved MBMS), comprising: a Broadcast/Multicast Service Center (BM-SC) for initiating control signaling and bearer services for Multimedia Broadcast/Multicast Service (MBMS); a System Architecture Evolved Gateway (SAE GW) for receiving MBMS service data and MBMS control signaling or service data from another network, and forwarding the received service data and control signaling; a Broadcast/Multicast Management Entity (BME) for receiving, processing and forwarding the MBMS control signaling, and determining, for each item of the service data for MBMS, an enhanced Node B (eNB) which needs to receive the control signaling; and an multicast User Plane Entity (mUPE) for receiving the MBMS service data, processing the received MBMS service data in Evolved Packet System Architecture Evolution, and forwarding the processed MBMS service data to a downstream node.
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: May 28, 2013
    Assignee: Alcatel Lucent
    Inventors: Hua Chao, Zhongji Hu, He Wang, Yonggang Wang
  • Patent number: 8437371
    Abstract: Discloses is a gateway, base station, communication network and synchronization method thereof. The method comprises: at time T1, sending from the gateway to the base stations a synchronization request signal; at time T2, receiving by the base stations the synchronization request signal; at time T3, sending from the base stations to the gateway the synchronization response comprising the times T2 and T3; at time T4, receiving by the gateway the synchronization response signals; and calculating for the base stations a mapping relationship between the time system of the gateway and the time system of the base station is calculated based on the times T1, T2, T3 and T4.
    Type: Grant
    Filed: August 22, 2007
    Date of Patent: May 7, 2013
    Assignee: Alcatel Lucent
    Inventors: He Wang, Zhongji Hu, Yonggang Wang, Hua Chao, Yu Chen, Pingping Xing
  • Patent number: 8415979
    Abstract: A calibration circuit for calibrating a differential driver with a differential output port including a first output node and a second output node includes: a comparing circuit arranged to receive a first output voltage corresponding to the first output node and a second output voltage corresponding to the second output node, and generate a comparison result according to the first output voltage, the second output voltage, and a predetermined voltage; and a controlling circuit coupled to the comparing circuit, a first resistive element and a second resistive element. The controlling circuit is arranged to adjust the first resistive element and the second resistive element according to the comparison result, wherein the first resistive element is coupled between the first output node and a reference voltage, and the second resistive element is coupled between the second output node and the reference voltage.
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: April 9, 2013
    Assignee: Mediatek Inc.
    Inventors: Kuan-Hua Chao, Yan-Bin Luo, Tse-Hsiang Hsu
  • Patent number: 8399661
    Abstract: The invention relates to a sulfur-containing compound and the preparation thereof. The invention also relates to the uses of the sulfur-containing compound in inhibiting inducible nitric oxide synthase and/or cyclooxygenase-2 and in treating the diseases associated with inducible nitric oxide synthase and/or cyclooxygenase-2. This invention also describes a series of chemical analogues of the said sulfur-containing compound and the preparation of these compounds.
    Type: Grant
    Filed: July 14, 2008
    Date of Patent: March 19, 2013
    Assignee: National Sun Yat-Sen University
    Inventors: Jyh-Horng Sheu, Chih-Hua Chao, Zhi-Hong Wen
  • Patent number: 8401112
    Abstract: A dirty paper precoding method implemented by using phase reshaping at the transmitter side, wherein the method comprises: subtracting interference signal from intended signal to obtain difference signal; determining constellation size for constellation extension according to amplitude-related information of interference signal and intended signal; extendedly mapping original constellation block of the difference signal to extended constellation block having the determined constellation size by constellation extension processing, according to the determined constellation size for constellation extension, wherein, the extended constellation block being proportionally enlarged to be closer to origin of constellation coordinate compared with original constellation block; and performing phase reshaping of each constellation point of extended constellation block corresponding to the difference signal, wherein, the phase reshaping making constellation point of extended constellation block of difference signal corre
    Type: Grant
    Filed: February 24, 2009
    Date of Patent: March 19, 2013
    Assignee: Alcatel Lucent
    Inventor: Hua Chao
  • Patent number: 8334725
    Abstract: A circuit for controlling a mixed mode controlled oscillator. The circuit comprises a charge pump, and a digital loop filter. The charge pump is coupled to the mixed mode controlled oscillator. The charge pump receives an up/down signal and sends a current signal to the mixed mode controlled oscillator. The digital loop filter receives the up/down signal and generates a digital code signal to the mixed mode controlled oscillator. An output frequency of the mixed mode controlled oscillator is controlled by the current signal and the digital code signal.
    Type: Grant
    Filed: April 1, 2008
    Date of Patent: December 18, 2012
    Assignee: Mediatek Inc.
    Inventors: Ping-Ying Wang, Kuan-Hua Chao, Jeng-Horng Tsai
  • Publication number: 20120311101
    Abstract: A method and apparatus of content transmission based on multimedia broadcast/multicast service (MBMS) in a machine type communication (MTC). A BM-SC receives a session start time from a MTC server; sends to a plurality of MTC devices a service announcement including the session start time; begins to establish MBMS bearers to the plurality of MTC devices when the session start time is reached; and transmits MTC service content from the MTC server to the plurality of MTC devices via the MBMS bearers. A MTC device receives a service announcement including a session start time therein; when the session start time is reached, wakes up to receive a notification about the MBMS bearers; and then receives MTC service contents transmitted via the MBMS bearers.
    Type: Application
    Filed: February 8, 2010
    Publication date: December 6, 2012
    Inventor: Hua Chao