Patents by Inventor Lin Guo

Lin Guo 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: 20090072982
    Abstract: A method for detecting a performance degradation of a capacitor in a power converter is disclosed. The method includes monitoring a voltage across the capacitor, detecting the performance degradation of the capacitor based on the monitored voltage, and generating a warning signal after detecting the performance degradation of the capacitor. A power converter is including at least one capacitor and a processor operably coupled to the at least one capacitor for monitoring a voltage across the at least one capacitor is also disclosed. The processor is configured for detecting a performance degradation of the capacitor based, at least in part, on the monitored voltage, and for generating a warning signal after detecting the performance degradation of the at least one capacitor.
    Type: Application
    Filed: September 14, 2007
    Publication date: March 19, 2009
    Inventors: Wing Ling Cheng, Zhe Wang, Huai Gang Jiang, Lin Guo Wang
  • Publication number: 20090072984
    Abstract: A power converter including a processor and at least one component whose health in the power converter will degrade over time is disclosed. The processor is configured for monitoring the health of the component over time, and for generating a warning signal when the monitored health of the component reaches a threshold level. A method for monitoring the health of at least one component in a power converter is also disclosed. The method includes monitoring at least one performance characteristic of the power converter. The performance characteristic represents the health of the component. The method further includes comparing the monitored performance characteristic with stored data to determine whether the health of the component has reached a predetermined level, and generating a warning signal after determining the health of the component has reached the predetermined level.
    Type: Application
    Filed: September 14, 2007
    Publication date: March 19, 2009
    Inventors: Wing Ling Cheng, Zhe Wang, Haui Gang Jiang, Lin Guo Wang
  • Publication number: 20090072983
    Abstract: A power converter including a processor, at least one component whose health in the power converter will degrade over time, and at least one alarm is disclosed. The processor is configured for monitoring the health of the component over time, and for activating the alarm when the monitored health of the component reaches a threshold level.
    Type: Application
    Filed: September 14, 2007
    Publication date: March 19, 2009
    Inventors: Wing Ling Cheng, Zhe Wang, Huai Gang Jiang, Lin Guo Wang
  • Patent number: 7502205
    Abstract: A control source and drivers for a thermal actuator fly height controlled heads in a disk drive system includes provisions for driving a heater element to dissipate various levels of power, and thus actuate the head by a desired amount, depending on whether the head is in a write mode or a read mode. Further, overshoot and undershoot are achieved as desired by providing initial values and equilibrium values and through the use of a control capacitor to provide a time constant to the drive signal to the heater element.
    Type: Grant
    Filed: June 3, 2004
    Date of Patent: March 10, 2009
    Assignee: Maxtor Corporation
    Inventors: Tony Hurtado, Wentao Yan, Lin Guo, Chris Hawks, Don Brunnett, Thao Nguyen, Richard Oswald, Erhard Schreck
  • Publication number: 20090042541
    Abstract: A mobile communication method is used for identifying a subscriber of a mobile communication device. The mobile communication method includes: sampling biometric information of the subscriber; generating an biometric analysis; generating digital signals according to the biometric analysis and an IMEI number; generating RF signals according to the digital signals and transmitting the RF signals; receiving the RF signals and transforming the RF signals to the digital signals; retrieving the biometric analysis and the IMEI number from the digital signals; comparing the biometric analysis and a user biometric profile; selecting a phone number according to the biometric analysis if the biometric analysis and the user biometric profile are the same; and transmitting the phone number to the mobile communication device based on the IMEI number. A mobile communication device and a mobile communication system are also provided.
    Type: Application
    Filed: December 29, 2007
    Publication date: February 12, 2009
    Applicants: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: HAI-JUN YI, SHIH-FANG WONG, LIN-LIN GUO, DE-HUA TONG
  • Publication number: 20090034127
    Abstract: A head gimbal assembly may comprise a slider, a micro-actuator attached to the slider, a flexure to mount the slider and the micro-actuator, and a suspension comprising a support region, a main portion, and a moving portion, wherein the flexure comprises a plurality of trace sets to electrically couple the micro-actuator and the slider, and wherein the plurality of trace sets are laminated generally parallel to each other.
    Type: Application
    Filed: July 31, 2008
    Publication date: February 5, 2009
    Applicant: SAE MAGNETICS (H.K.) LTD.
    Inventors: Ming Gao YAO, Yi Ru XIE, Sun YU, Lin GUO
  • Publication number: 20090006726
    Abstract: A multiple adapter is used for assembling a plurality of flash drives. The multiple adapter includes a multiple expansion port, a detector, a file manager, and a controller. The multiple expansion port coupled to the flash drives. The detector is coupled to the multiple expansion port for detecting store information of the flash drives. The file manager is coupled to the multiple expansion port and the detector for receiving the store information and calculating total memory capacity and total spare capacity of the flash drives. The controller is used for controlling the detector and the file manager. A writing procedure and a reading procedure of an access method are also provided.
    Type: Application
    Filed: December 20, 2007
    Publication date: January 1, 2009
    Applicants: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: PIN-FENG FU, SHIH-FANG WONG, LIN-LIN GUO, CHUN-HUA LI
  • Publication number: 20080288669
    Abstract: An adapter for storing data includes a male connector, a first slot, a second slot, a switch circuit, and a controller. The male connector is used for connecting to an electronic device. The first slot is used for connecting a first memory card. The second slot is used for connecting a second memory card. The switch circuit is used for selectively connecting the male connector with the first slot and the second slot. The controller is used for detecting states of the first memory card and the second memory card and controlling the switch circuit to connect the male connector with one of the first slot and the second slot based on detected states.
    Type: Application
    Filed: October 30, 2007
    Publication date: November 20, 2008
    Applicants: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: DE-HUA TONG, SHIH-FANG WONG, ZHAN-WU LI, LIN-LIN GUO
  • Publication number: 20080266713
    Abstract: A suspension for a HGA includes a suspension flexure and an out trigger. The suspension flexure has a tongue region having a first flexure part in a tip portion thereof for mounting a trailing edge of a slider and a PZT mounting region for mounting PZT elements. One end of the out trigger is connected to the suspension flexure, and the other end of the out trigger has a trigger support portion which extends above the tongue region so as to support the leading edge of the slider. The structure of the out trigger is capable of stiffening the tongue region of the suspension flexure and, in turns, avoiding the deformation problem and the dimple separation problem during the manufacturing process or in vibration or shock events. The invention also discloses a HGA with the suspension, manufacturing methods of the HGA and a disk drive unit having such HGA.
    Type: Application
    Filed: April 26, 2007
    Publication date: October 30, 2008
    Applicant: SAE Magnetics (H.K.) Ltd.
    Inventors: MingGao Yao, YiRu Xie, Yu Sun, Lin Guo
  • Publication number: 20080256037
    Abstract: A system for generating an ordered list. The system may include a query engine and an advertisement engine. The query engine receives a query from the user and determines parameters to match with the advertisement. The advertisement engine receives the parameters and generates a list of items based on the parameters. The system may function in a precompute mode to calculate intervals for each available item to minimize the variable processing costs for each item. Further, the number of intervals a crossed item may be selected in a manner to satisfy a given space constraint. By characterizing each item by a minimum price within each interval, the system can quickly query the interval matching the desired quantity for each item and determined if the minimum price for that interval is less than the top-k prices already included in the list.
    Type: Application
    Filed: April 12, 2007
    Publication date: October 16, 2008
    Inventors: Sihem Amer Yahia, Lin Guo, Raghu Ramakrishnan, Jayavel Shanmugasundaram, Utkarsh Srivastava, Andrew Tomkins, Erik Vee
  • Publication number: 20080247078
    Abstract: Altitude sensing systems and/or methods for fly height adjustment in disk drive devices are provided. In certain example embodiments, a PZT-type pressure and/or altitude sensor may be located on the side of the disk drive proximate to the disk edge. When the disk rotates, the air flow generated by the disk will deform the PZT element of the sensor. The PZT element will generate a voltage in response to this deformation. Calibrations may be performed to compensate for altitude changes (e.g. the air inside of the disk drive will become thin and the air resistance will be reduced at higher altitudes). Also, the output sensitivity of the PZT element may change with the altitude change. After the altitude is sensed by the PZT element in the sensor, the servo motor may use this signal to calculate and/or adjust the dynamic fly height (DFH) and/or fly height of the read/write head.
    Type: Application
    Filed: April 6, 2007
    Publication date: October 9, 2008
    Applicant: SAE Magnetics (H.K) Ltd.
    Inventors: MingGao Yao, Lin Guo, Yu Sun
  • Publication number: 20080247088
    Abstract: Certain example embodiments described herein relate to a micro-actuator for use with an HGA and/or disk drive device. A substantially U-shaped frame may include a cavity capable of receiving a slider. The frame may include two segmented, flexible side arms and a bottom support arm at least partially defining the cavity. Each segmented side arm may have a PZT element mounted on an outer surface thereof facing away from the cavity, and each may include a lower portion proximate to the bottom support arm and an upper portion disposed at an end opposing the bottom support arm. The lower portion and the upper portion may be at least partially separated by a gap. Accordingly, micro-actuators having better resonance and servo performance, reduced difficulties associated with the slider/micro-actuator mounting process, and/or better shock performance may be provided.
    Type: Application
    Filed: April 5, 2007
    Publication date: October 9, 2008
    Applicant: SAE Magnetics (H.K.) Ltd.
    Inventors: MingGao Yao, Lin Guo, Yu Sun
  • Publication number: 20080224769
    Abstract: A circuit for use with a power amplifier that amplifies an input signal. The circuit may comprise an amplitude correction circuit and an open-loop switching regulator. The amplitude correction circuit may be configured to generate a corrected envelope signal from an input envelope signal that represents an envelope of the input signal. The open-loop switching regulator may be connected to the amplitude correction circuit and may be for powering the power amplifier based on the corrected envelope signal. According to various embodiments, the corrected envelope signal generated by the amplitude correction circuit is a function of the input envelope signal and an error voltage of the open-loop switching regulator.
    Type: Application
    Filed: October 9, 2007
    Publication date: September 18, 2008
    Inventors: Piotr Markowski, Lin Guo Wang
  • Patent number: 7414809
    Abstract: In accordance with various embodiments, initial servo data are written to a storage medium as a series of radially overlapped spiral segments. Final servo data are thereafter written to the medium while concurrently servoing on said overlapped segments.
    Type: Grant
    Filed: May 18, 2007
    Date of Patent: August 19, 2008
    Assignee: Maxtor Corporation
    Inventors: S. Craig Smith, Stan Shepherd, Yu Sun, Yuan Roy Chen, Lin Guo
  • Publication number: 20080158734
    Abstract: A micro-actuator for use with an HGA and/or disk drive device (e.g., a small platform disk drive device) with the micro-actuator having a reduced mass suitable for improving shock performance, and/or methods of making the same are provided. In certain example embodiments, the micro-actuator may comprise a substantially U-shaped frame including a cavity capable of receiving a slider, with the frame including two side arms and a bottom support arm at least partially defining the cavity. The bottom support arm may have a reduced mass capable of providing improved shock performance and capable of conveying a high resonance frequency response at a low gain. The bottom support arm may be, for example, substantially rectangle shaped, substantially I-shaped, toothed, etc. Also, the bottom support arm may be less thick than the side arms.
    Type: Application
    Filed: January 3, 2007
    Publication date: July 3, 2008
    Applicant: SAE Magnetics (H.K.) Ltd.
    Inventors: MingGao Yao, YiRu Xie, Lin Guo, Yu Sun
  • Patent number: 7388727
    Abstract: The present invention is directed to a method and apparatus for moving off of a disk drive's crash stop in a consistent manner.
    Type: Grant
    Filed: December 7, 2006
    Date of Patent: June 17, 2008
    Assignee: Seagate Technology LLC
    Inventors: Xin Hua Yang, Lin Guo, Yu Sun
  • Patent number: 7375911
    Abstract: A hard disk drive is disclosed comprising at least one disk rotatable about an axis, an actuator assembly moveable relative to the disk, a transducer positioned on the actuator assembly, an actuator signal line, a piezoelectric actuator element disposed on the actuator assembly and electrically interconnected to the actuator signal line, a processor, a sensor signal line and a piezoelectric sensor element for sensing a vibration. The piezoelectric sensor element is collocated with the piezoelectric actuator element and electrically interconnected to the processor by the sensor signal line. The piezoelectric actuator element is operable to move the at least one transducer relative to a surface of the disk. The piezoelectric sensor element is electrically isolated from the piezoelectric actuator element. A method for detecting a vibration in a hard disk drive actuator assembly is also disclosed.
    Type: Grant
    Filed: November 24, 2004
    Date of Patent: May 20, 2008
    Assignee: Maxtor Corporation
    Inventors: Yunfeng Li, Wei Guo, Lin Guo, Yu Sun
  • Publication number: 20080114607
    Abstract: A system and method for generating advertisements based on search intent. The system includes a query engine, and an advertisement engine. The query engine receives a query from the user. The query engine analyzes the query to determine a query intent that is matched to a predetermined domain. A translated query is generated including the domain type. Once a domain is selected, the query may be further analyzed to determine generic domain information. The domain and associated information may then be matched to a list of advertisements. The advertisement may be assigned an ad match score based on a correlation between the query information and various listing information provided in the advertisement.
    Type: Application
    Filed: November 9, 2006
    Publication date: May 15, 2008
    Inventors: Sihem Amer-Yahia, Lin Guo, Raghu Ramakrishnan, Jayavel Shanmugasundaram, Utkarsh Srivastava, Andrew Tomkins
  • Patent number: 7369345
    Abstract: A system provided for protecting a disk drive from impact damages. More specifically, a disk drive is provided that includes an accelerometer interconnected to a printed circuit board that detects free fall of the disk drive. In addition, the velocity of spinning disks of the disk drive is also monitored to assess changes in velocity thereof that may indicate the presence of a tumbling condition. Furthermore, the change in acceleration measured by the accelerometer is monitored to prevent false indications of free fall due to common vibrations. Thus an enhanced system is provided that protects disk drives from the effect of free falls under a wide variety of conditions and allowing for drops from shorter distances to be identified.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: May 6, 2008
    Assignee: Maxtor Corporation
    Inventors: Yunfeng Li, Erhard Schreck, Wei Guo, Tim Glassburn, Mark Heimbaugh, William Flynn, Oliver Northrup, John E. Scura, Lin Guo, Xiaokun Chew
  • Patent number: 7353687
    Abstract: A reference leak includes a leak layer formed of one of a metallic material, a glass material, and a ceramic material. The metallic material is selected from the group consisting of copper, nickel, and molybdenum. The leak layer comprises a number of substantially parallel leak through holes defined therein. The leak through holes may be cylindrical holes or polyhedrical holes. A length of each of the leak through holes is preferably not less than 20 times a diameter thereof. A diameter of each of the leak through holes is generally in the range from 10 nm to 500 nm. A length of each of the leak through holes is generally in the range from 100 nm to 100 ?m. A leak rate of the reference leak is in the range from 10?8 to 10?15 torĂ—l/s. The leak through holes have substantially same length and diameter.
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: April 8, 2008
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Jie Tang, Liang Liu, Peng Liu, Zhao-Fu Hu, Bing-Chu Du, Cai-Lin Guo, Pi-Jin Chen, Shou-Shan Fan