Patents by Inventor Jun Cai

Jun Cai 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: 20180323452
    Abstract: A fuel cell temperature-measuring system includes a coolant source that provides coolant at a total coolant flow rate and an initial coolant temperature. A flow field plate defines peripheral flow channels and active area flow channels through which coolant flows. The flow field plate is adapted to be positioned in a fuel cell stack between individual fuel cells. A total coolant flow provided to the common input divides into a bypass flow that flows through the peripheral flow channels and an active area flow that flows through the active area flow channels. The bypass flow combines with the active area flow to emerge from the common output with an output coolant temperature. The fuel cell temperature-measuring system includes a temperature sensor that measures the output coolant temperature from the common output. Finally, a temperature estimator estimates an active area coolant temperature from the output coolant temperature.
    Type: Application
    Filed: May 5, 2017
    Publication date: November 8, 2018
    Inventors: DANIEL W. SMITH, JUN CAI, ANDREW J. MASLYN
  • Patent number: 10073735
    Abstract: Systems and methods are disclosed for a seeding mechanism for error detection codes. An error detection code may be generated using specifically modified seed input and stored to data sectors not containing valid data. A data storage device may determine if read attempts are directed to an invalid sector by analysis of the stored error detection code. In some embodiments, an apparatus may determine a first error detection code stored to a target data storage sector does not match a second error detection code calculated for the target data storage sector, compare the first error detection code to a modified error code value to determine whether the target data storage sector contains valid data, and return an indication that the target data storage sector does not contain valid data when the error detection code matches the modified error code value.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: September 11, 2018
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Jun Cai, Jeetandra Kella, ChuanPeng Ong, Brian T Edgar
  • Patent number: 10069160
    Abstract: A fuel cell voltage recovery system includes a fuel cell stack having a fuel cell stack voltage between fuel cell stack terminals which is at a first voltage during normal fuel cell operation. The system also includes a high voltage electrical system operating at a first DC operating voltage that is generally higher than the first voltage of the fuel cell stack. A boost converter in electrical connection with the fuel cell stack and the high voltage electrical system operates in a normal control mode to transfer electrical power from the fuel cell stack to the high voltage electrical system through regulation and control of average stack output current (boost input current) during normal fuel cell operation. The boost converter can also operate in a voltage control mode to lower the fuel cell stack voltage to a second voltage that is lower than the first voltage. A FCS controller controls the operation of the boost converter.
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: September 4, 2018
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Joseph Berg, Jun Cai, Sergio E. Garcia, Daniel W. Smith, Matthew C. Kirklin
  • Patent number: 10050288
    Abstract: Systems and methods for detecting and validating a leak in a fuel cell system are presented. In certain embodiments, various fuel cell stack set points may be adjusted such that adequate H2 flow data may be obtained to identify and validate an H2 leak and/or a location of such a leak. In some embodiments, H2 flow data may be obtained by adjusting certain fuel cell system operating parameters under a variety of operating conditions and/or modes and measuring flow data under such various operational conditions.
    Type: Grant
    Filed: January 5, 2015
    Date of Patent: August 14, 2018
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Stephen D. Pace, Jun Cai, Manish Sinha
  • Publication number: 20180209651
    Abstract: A fuel injector assembly for a combustor including an axially staged fuel injector includes an injector body having an inner wall and a boss that is rigidly connected to the injector body the boss includes an inner wall. The inner wall of the boss and the inner wall of the injector body together define a flow passage of the fuel injector assembly. The injector body defines an inlet to the flow passage and the boss defines an outlet of the flow passage.
    Type: Application
    Filed: January 20, 2017
    Publication date: July 26, 2018
    Inventors: Jun Cai, David William Cihlar, Hasan Karim
  • Publication number: 20180187894
    Abstract: A fuel injector is provided for the radial introduction of a fuel/air mixture to a combustor. The fuel injector includes a frame having interior sides defining an opening for passage of a first fluid; at least one fuel injection body; and a conduit fitting. The at least one fuel injection body is coupled to the frame and positioned within the opening, thereby defining flow paths for the first fluid. The at least one fuel injection body defines a fuel plenum, and a set of fuel injection holes are defined through an outer surface of the at least one fuel injection body. The conduit fitting is coupled to the frame and conveys fuel from a fuel supply line to the fuel plenum. Fuel and the first fluid mix in the flow paths and are delivered through the outlet to the combustor.
    Type: Application
    Filed: October 9, 2017
    Publication date: July 5, 2018
    Inventors: Jun Cai, Andrew Grady Godfrey, Richard Martin DiCintio, Seth Reynolds Hoffman, Ronnie Ray Pentecost, Jayaprakash Natarajan, Wei Zhao
  • Patent number: 9985303
    Abstract: A system and method for determining whether a concentration estimation value of hydrogen gas in an anode sub-system of a fuel cell system is within a predetermined threshold of a valid hydrogen gas concentration, and if not, correcting the estimation value. The method includes providing a hydrogen gas concentration sensor value from a virtual sensor and calculating the hydrogen gas concentration estimation value using a gas concentration estimation model. The method also includes determining if a difference between the estimation value and the sensor value is greater than at least one threshold, and if so, causing an extended bleed event to occur that bleeds an anode exhaust gas to force the estimation value to be closer to the sensor value. The method also includes setting a diagnostic if multiple extended bleeds do not cause the estimation value and the sensor value to converge.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: May 29, 2018
    Assignee: GM Global Technology Operations LLC
    Inventors: Jun Cai, Stephen D. Pace, Sergio E. Garcia, Elizabeth Dicocco
  • Publication number: 20180138312
    Abstract: An LDMOS transistor with a dummy gate comprises an extended drift region over a substrate, a drain region in the extended drift region, a channel region in the extended drift region, a source region in the channel region, a first dielectric layer with a first thickness formed over the extended drift region, a second dielectric layer with a second thickness formed over the extended drift region and the channel region, wherein the first thickness is greater than the second thickness, and wherein the first dielectric layer and the second dielectric layer form two steps, a first gate formed over the first dielectric layer and a second gate formed above the second dielectric layer.
    Type: Application
    Filed: January 12, 2018
    Publication date: May 17, 2018
    Inventors: Chun-Wai Ng, Ruey-Hsin Liu, Jun Cai, Hsueh-Liang Chou, Chi-Chih Chen
  • Publication number: 20180089492
    Abstract: A screen assembly with a fingerprint module includes: a transparent cover, a display module, and a fingerprint module. The display module is fixed to an inner surface of the transparent cover, and the display module includes a display area and a non-display area. The transparent cover has a fingerprint opening, and at least a portion of the fingerprint opening is in a projection area of the non-display area on the transparent cover. The fingerprint module is fixed to the transparent cover and is located in the fingerprint opening.
    Type: Application
    Filed: September 19, 2017
    Publication date: March 29, 2018
    Applicant: SHENZHEN GOODIX TECHNOLOGY CO., LTD.
    Inventor: Jun CAI
  • Publication number: 20180034077
    Abstract: A fuel cell voltage recovery system includes a fuel cell stack having a fuel cell stack voltage between fuel cell stack terminals which is at a first voltage during normal fuel cell operation. The system also includes a high voltage electrical system operating at a first DC operating voltage that is generally higher than the first voltage of the fuel cell stack. A boost converter in electrical connection with the fuel cell stack and the high voltage electrical system operates in a normal control mode to transfer electrical power from the fuel cell stack to the high voltage electrical system through regulation and control of average stack output current (boost input current) during normal fuel cell operation. The boost converter can also operate in a voltage control mode to lower the fuel cell stack voltage to a second voltage that is lower than the first voltage. A FCS controller controls the operation of the boost converter.
    Type: Application
    Filed: July 27, 2016
    Publication date: February 1, 2018
    Inventors: JOSEPH BERG, JUN CAI, SERGIO E. GARCIA, DANIEL W. SMITH, MATTHEW C. KIRKLIN
  • Patent number: 9871133
    Abstract: An LDMOS transistor with a dummy gate comprises an extended drift region over a substrate, a drain region in the extended drift region, a channel region in the extended drift region, a source region in the channel region, a first dielectric layer with a first thickness formed over the extended drift region, a second dielectric layer with a second thickness formed over the extended drift region and the channel region, wherein the first thickness is greater than the second thickness, and wherein the first dielectric layer and the second dielectric layer form two steps, a first gate formed over the first dielectric layer and a second gate formed above the second dielectric layer.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: January 16, 2018
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chun-Wai Ng, Ruey-Hsin Liu, Jun Cai, Hsueh-Liang Chou, Chi-Chih Chen
  • Publication number: 20170279700
    Abstract: Embodiments of the application provide a method and apparatus for transmitting data. In the solution of the application, the method and apparatus obtain at least one transmission link from a source address of data to be transmitted, to a destination address of the data to be transmitted, according to the source address and the destination address; select at least one of the transmission links; test for each selected transmission links a transmission rate of the transmission link over which data are transmitted respectively in a first transmission protocol and a second transmission protocol; and select the transmission protocol and the transmission link corresponding to the highest transmission rate to transmit the data to be transmitted. With the method according to the embodiments of the application, two transmission protocols can be supported to adapt to a complex network environment so as to improve the efficiency of data transmission.
    Type: Application
    Filed: August 25, 2016
    Publication date: September 28, 2017
    Inventor: Jun CAI
  • Publication number: 20170279738
    Abstract: Embodiments of the application provide a method, apparatus, and system for transmitting data. In the solution of the application, a client determines at least two data transmission paths between the client and a transmission service platform, and selects at least two of the determined data transmission paths; segments data to be transmitted into at least two data blocks; transmits associated information of respective data blocks to the transmission service platform; and transmits the at least two data blocks into which the data are segmented to the transmission service platform over he selected respective data transmission paths. In the embodiments of the application, the data to be transmitted are segmented into a plurality of data blocks, and then the data are transmitted concurrently over the at least two data transmission paths, thus improving the efficiency of data transmission over the prior art where the data are transmitted over only one data transmission path.
    Type: Application
    Filed: August 25, 2016
    Publication date: September 28, 2017
    Inventor: Jun CAI
  • Publication number: 20170271199
    Abstract: A method of fabricating a semiconductor structure includes forming an isolation feature in a substrate, removing a portion of the isolation feature and a portion of the substrate underneath the removed portion of the isolation feature to form a trench in the substrate, and forming a trapping feature around a bottom portion of the trench. A first sidewall and a second sidewall of the trench are in direct contact with the isolation feature, and a bottom surface of the trench is below a bottom surface of the isolation feature.
    Type: Application
    Filed: June 5, 2017
    Publication date: September 21, 2017
    Inventors: Alex KALNITSKY, Chih-Wen YAO, Jun CAI, Ruey-Hsin LIU, Hsiao-Chin TUAN
  • Publication number: 20170268786
    Abstract: A fuel injector assembly includes a shroud defining a fuel manifold therein. The fuel manifold is fluidly coupled to a fuel line to receive a fuel therefrom. The fuel injector assembly further includes a center body and a plurality of vanes operatively coupling the center body to the shroud. Each vane of the plurality of vanes is circumferentially spaced from circumferentially adjacent vanes to define at least one passage therebetween for routing of air therethrough. Each of the plurality of vanes has at least one outlet hole in fluid communication with the fuel manifold and at least one passage of the at least one passage for expulsion of the fuel into the at least one passage for mixing with the air. A fuel injector outlet is defined by an inner wall of the fuel injector assembly and positioned to direct a fuel-air mixture out of the fuel injector assembly.
    Type: Application
    Filed: March 18, 2016
    Publication date: September 21, 2017
    Inventors: Jun Cai, Hasan Karim, Lucas John Stoia, William Michael Poschel, Jayaprakash Natarajan
  • Publication number: 20170268784
    Abstract: A staged injector in a combustor of a gas turbine. The staged injector may include an injector tube comprising a lateral wall enclosing an injection passageway that extends between an outlet and inlet. An outboard segment of the injector tube may include an exterior face. A cover may be formed about the outboard segment so form a surrounding plenum. The cover may include a side wall that radially overlaps the outboard segment and forms a first portion of the surrounding plenum therebetween. A ceiling wall of the cover may form a second portion of the surrounding plenum. A screening plate may be formed within the side wall of the cover that includes a multitude of apertures configured to fluidly connect the first portion of the surrounding plenum with a feed cavity formed exterior to the side wall.
    Type: Application
    Filed: March 15, 2016
    Publication date: September 21, 2017
    Applicant: General Electric Company
    Inventors: Carolyn Ashley Crawley, David William Cihlar, Jun Cai
  • Patent number: 9745227
    Abstract: A porous discriminating layer is formed on a ceramic support having at least one porous wall by (a) establishing a flow of a gas stream containing agglomerates of particles and (b) calcining said deposited layer to form the discriminating layer. At least a portion of the particles are of a sinter-resistant material or a sinter-resistant material precursor. The particles have a size from 0.01 to 5 microns and the agglomerates have a size of from 10 to 200 microns. This method is an inexpensive and effective route to forming a discriminating layer onto the porous wall.
    Type: Grant
    Filed: August 17, 2011
    Date of Patent: August 29, 2017
    Assignee: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Jun Cai, Aleksander J. Pyzik, James J. O'Brien, Robin P. Ziebarth
  • Patent number: 9698044
    Abstract: A semiconductor structure includes a substrate, a first power device and a second power device in the substrate, at least one isolation feature between the first and second power device, and a trapping feature adjoining the at least one isolation feature in the substrate.
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: July 4, 2017
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Alex Kalnitsky, Chih-Wen Yao, Jun Cai, Ruey-Hsin Liu, Hsiao-Chin Tuan
  • Patent number: 9678864
    Abstract: A device includes one or more data storage media having a main storage area, and includes a non-volatile cache memory and a controller. The controller stores a plurality of data packets into a plurality of physical locations in the main storage area. Each of the data packets is associated with a different logical block address (LBA), and each of the physical locations is associated with a different physical location address (PLA). The controller generates mapping information that links the different LBAs to the different PLAs. Upon detecting a soft error when reading a data packet stored in a physical location, the controller relocates the data packet associated with the soft error to a physical location of the non-volatile cache memory. The controller also marks the physical location as a suspect location. The controller updates the mapping information to reflect the relocation of the data packet associated with the soft error.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: June 13, 2017
    Assignee: Seagate Technology LLC
    Inventors: Jun Cai, AndiSumaryo Sutiawan, Jeetandra Kella, ChuanPeng Ong, Mark Allen Gaertner, Brian T. Edgar
  • Patent number: 9660074
    Abstract: LDMOS devices are disclosed. An LDMOS device includes at least one drift region disposed in a portion of a semiconductor substrate; at least one isolation structure at a surface of the semiconductor substrate; a D-well region positioned adjacent a portion of the at least one drift region, and an intersection of the drift region and the D-well region forming a junction between first and second conductivity types; a gate structure disposed over the semiconductor substrate; a source contact region disposed on the surface of the D-well region; a drain contact region disposed adjacent the isolation structure; and a double buffer region comprising a first buried layer lying beneath the D-well region and the drift region and doped to the second conductivity type and a second high voltage deep diffusion layer lying beneath the first buried layer and doped to the first conductivity type. Methods are disclosed.
    Type: Grant
    Filed: July 24, 2015
    Date of Patent: May 23, 2017
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Jun Cai