Patents by Inventor Shaojie Xu

Shaojie Xu 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: 20230118004
    Abstract: An embodiment of the present disclosure relates to a method of controlling a power amplifier (PA). The PA can comprise a main PA path and an auxiliary PA path. The auxiliary PA path can have a plurality of turn-on settings. The method can comprise: determining a power back off gain and a lower bound gain for the PA; and performing an iterative auxiliary PA turn-on setting selection process. The selection process can comprise: determining an instantaneous power input to the PA; based on the instantaneous power input, choosing a turn-on setting in the plurality of turn-on settings of the auxiliary PA path that causes an instantaneous gain of the PA to be between the power back off gain and the lower bound gain; and applying the chosen turn-on setting to the auxiliary PA path.
    Type: Application
    Filed: February 21, 2021
    Publication date: April 20, 2023
    Inventors: Fei Wang, Justin Romberg, Hua Wang, Shaojie Xu
  • Patent number: 10176282
    Abstract: A memory compiler includes a processor configured to perform a simulation of an operation of an input stage coupled to an input terminal of a memory circuit, wherein the simulation of the operation of the input stage is performed for various slew rate values at the input terminal to obtain corresponding extrinsic input timing delays. The processor is further configured to perform a simulation of an operation of an output stage coupled to an output terminal of the memory circuit, wherein the simulation of the operation of the output stage is performed for various capacitance loading values at the output terminal to obtain corresponding extrinsic output timing delays. The processor is further configured to perform a simulation of an operation of a section of the memory circuit between the input stage and the output stage to obtain an intrinsic timing delay.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: January 8, 2019
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Shaojie Xu, Yukit Tang, Pao-Po Hou, Derek C. Tao, Annie-Li-Keow Lum
  • Patent number: 10031982
    Abstract: Methods and systems for efficient retrieval of neighboring measurement values in order to enable fast execution of rule-based error correction are disclosed. In one aspect, a method for data normalization using multi-key sorting is disclosed. In some embodiments, the method includes receiving, by a data organization engine, a set of uncorrected data including corresponding neighboring data. In various embodiments, the data organization engine organizes the uncorrected data by construction of a directed acyclic graph (DAG), where the DAG includes a plurality of nodes. In some embodiments, the data organization engine may traverse the plurality of nodes to retrieve the corresponding neighboring data. Upon retrieval of the neighboring data, a rule-based correction engine may correct the uncorrected data utilizing the retrieved corresponding neighboring data.
    Type: Grant
    Filed: December 24, 2014
    Date of Patent: July 24, 2018
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Pao-Po Hou, Derek C. Tao, Liang-Yu Chen, Shaojie Xu, Kuoyuan Hsu
  • Publication number: 20160188654
    Abstract: Methods and systems for efficient retrieval of neighboring measurement values in order to enable fast execution of rule-based error correction are disclosed. In one aspect, a method for data normalization using multi-key sorting is disclosed. In some embodiments, the method includes receiving, by a data organization engine, a set of uncorrected data including corresponding neighboring data. In various embodiments, the data organization engine organizes the uncorrected data by construction of a directed acyclic graph (DAG), where the DAG includes a plurality of nodes. In some embodiments, the data organization engine may traverse the plurality of nodes to retrieve the corresponding neighboring data. Upon retrieval of the neighboring data, a rule-based correction engine may correct the uncorrected data utilizing the retrieved corresponding neighboring data.
    Type: Application
    Filed: December 24, 2014
    Publication date: June 30, 2016
    Inventors: Pao-Po Hou, Derek C. Tao, Liang-Yu Chen, Shaojie Xu, Kuoyuan Hsu
  • Patent number: 9298875
    Abstract: A method of designing a semiconductor circuit includes generating a model of the semiconductor circuit. The model includes a functional area corresponding to a first block of the semiconductor circuit, and a loading area corresponding to a second block of the semiconductor circuit, wherein the first block is connected to the second block by a signal line. The method further includes extracting, in the functional area, parasitic parameters of the signal line and a device of the first block. The method further includes extracting, in the loading area, parasitic parameters of the signal line, without extracting parasitic parameters of a device of the second block.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: March 29, 2016
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Shaojie Xu, Yukit Tang, Pao-Po Hou, Derek C. Tao, Annie-Li-Keow Lum
  • Publication number: 20150178430
    Abstract: A memory compiler includes a processor configured to perform a simulation of an operation of an input stage coupled to an input terminal of a memory circuit, wherein the simulation of the operation of the input stage is performed for various slew rate values at the input terminal to obtain corresponding extrinsic input timing delays. The processor is further configured to perform a simulation of an operation of an output stage coupled to an output terminal of the memory circuit, wherein the simulation of the operation of the output stage is performed for various capacitance loading values at the output terminal to obtain corresponding extrinsic output timing delays. The processor is further configured to perform a simulation of an operation of a section of the memory circuit between the input stage and the output stage to obtain an intrinsic timing delay.
    Type: Application
    Filed: March 4, 2015
    Publication date: June 25, 2015
    Inventors: Shaojie XU, Yukit TANG, Pao-Po HOU, Derek C. TAO, Annie-Li-Keow LUM
  • Publication number: 20150095867
    Abstract: A method of designing a semiconductor circuit includes generating a model of the semiconductor circuit. The model includes a functional area corresponding to a first block of the semiconductor circuit, and a loading area corresponding to a second block of the semiconductor circuit, wherein the first block is connected to the second block by a signal line. The method further includes extracting, in the functional area, parasitic parameters of the signal line and a device of the first block. The method further includes extracting, in the loading area, parasitic parameters of the signal line, without extracting parasitic parameters of a device of the second block.
    Type: Application
    Filed: December 11, 2014
    Publication date: April 2, 2015
    Inventors: Shaojie XU, Yukit TANG, Pao-Po HOU, Derek C. TAO, Annie-Li-Keow LUM
  • Patent number: 8997031
    Abstract: In a timing delay characterization method, a signal path between an input terminal and an output terminal of a semiconductor circuit is divided into an input stage, a processing stage, and an output stage. An operation of the input stage is simulated at various input parameter values of an input parameter at the input terminal to obtain corresponding extrinsic input timing delays associated with the input stage. An operation of the processing stage is simulated to obtain an intrinsic timing delay associated with the processing stage. An operation of the output stage is simulated at various output parameter values of an output parameter at the output terminal to obtain corresponding extrinsic output timing delays associated with the output stage. A timing delay data store is generated or populated based on the extrinsic input timing delays, the extrinsic output timing delays and the intrinsic timing delay.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: March 31, 2015
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Shaojie Xu, Yukit Tang, Pao-Po Hou, Derek C. Tao, Annie-Li-Keow Lum
  • Patent number: 8935641
    Abstract: A semiconductor circuit includes an array of repeating blocks, each of the blocks having a device, and at least one signal line connecting the devices of the blocks. A model of the semiconductor circuit is generated to include a functional area corresponding to at least one first block of the array, and a loading area corresponding to at least one second block of the array. In the functional area, parasitic parameters of the at least one signal line and the device of the at least one first block are extracted. In the loading area, parasitic parameters of the at least one signal line are extracted, but parasitic parameters of the device of the at least one second block are not extracted.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: January 13, 2015
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Shaojie Xu, Yukit Tang, Pao-Po Hou, Derek C. Tao, Annie-Li-Keow Lum
  • Patent number: 7425681
    Abstract: A decorative switch assembly for outlet boxes wherein the switch actuator and the face plate are metallic and screwless. The assembly is grounded by using U-shaped sheet metals.
    Type: Grant
    Filed: June 12, 2006
    Date of Patent: September 16, 2008
    Inventors: Shaojie Xu, Hui Xu
  • Publication number: 20070284128
    Abstract: “Confirmed with USPTO that no abstract was provided.
    Type: Application
    Filed: June 12, 2006
    Publication date: December 13, 2007
    Inventors: Shaojie Xu, Hui Xu
  • Patent number: 7122740
    Abstract: A thin switch plate assembly for covering and mounting switches includes of a face plate attached to a base plate by a snap-fit connection to provide a screwless appearance.
    Type: Grant
    Filed: November 18, 2004
    Date of Patent: October 17, 2006
    Inventors: Shaojie Xu, Hui Xu
  • Patent number: 7102081
    Abstract: A novel cover plate assembly includes of two decorative face plates and a base plate for mounting electrical devices. The two face plates fabricated from steel plate are screwless and provide noble decorative appearances after the surfaces properly treated. The inner face plate is snapped into the base plate through a snap fit connection. The outer face plate is attached to inner face plate through a snap fit connection. The base plate can be molded of any flame retardant materials.
    Type: Grant
    Filed: October 27, 2004
    Date of Patent: September 5, 2006
    Inventors: Shaojie Xu, Hui Xu
  • Publication number: 20060086525
    Abstract: A novel cover plate assembly comprising of two decorative face plates and a base plate for mounting electrical devices. The two face plates fabricated from steel plate are screwless and provide noble decorative appearances after the surfaces properly treated. The inner face plate is snapped into the base plate through a snap fit connection. The outer face plate is attached to inner face plate through a snap fit connection. The base plate can be molded of any flame retardant materials.
    Type: Application
    Filed: October 27, 2004
    Publication date: April 27, 2006
    Inventors: Shaojie Xu, Hui Xu
  • Publication number: 20060027389
    Abstract: A novel cover plate assembly comprising of a face plate and a base plate for mounting a switch mechanism having a yoke plate with the spacing of screw holes at the yoke plate the same as that of a wall box and that of said base plate provides a universal switch mounting system for any devices of any types. The decorative face plate is free of mounting screw holes and is snapped into the base plate through a snap fit connection. The cover plate assembly made of metal is suitable for high-class wall decorations.
    Type: Application
    Filed: August 4, 2004
    Publication date: February 9, 2006
    Inventors: Shaojie Xu, Hui Xu
  • Publication number: 20050257951
    Abstract: A thin switch plate assembly for covering and mounting switches comprised of a face plate attached to a base plate by a snap-fit connection to provide a screwless appearance.
    Type: Application
    Filed: November 18, 2004
    Publication date: November 24, 2005
    Inventors: Shaojie Xu, Hui Xu
  • Patent number: D528403
    Type: Grant
    Filed: September 27, 2004
    Date of Patent: September 19, 2006
    Inventors: Shaojie Xu, Hui Xu
  • Patent number: D533769
    Type: Grant
    Filed: October 6, 2005
    Date of Patent: December 19, 2006
    Inventors: Shaojie Xu, Hui Xu