Patents by Inventor Yuan HUA

Yuan HUA 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).

  • Patent number: 7044800
    Abstract: A dual purpose memory card adapter comprising a base and a cover. The base is configured as a female connector with a plurality of positioning fingers corresponding to conducting pieces of MS (Memory Stick) and MS Duo cards. The positioning fingers are uniformly spaced within the memory card adapter. Accordingly, the memory card adapter can be shared by MS and MS Duo cards. Besides, the positioning fingers prevent the MS and MS Duo cards from a false insertion into the memory card adapter in a reverse direction.
    Type: Grant
    Filed: March 25, 2005
    Date of Patent: May 16, 2006
    Assignee: Kingconn Technology Co., Ltd.
    Inventor: Yuan-Hua Chen
  • Publication number: 20060023417
    Abstract: An improved port replicator for portable electronic devices includes an angle adjustment dock which has two separated sides extended to form respectively a flange with a first bore and a connector dock located on a surface to receive transmission signals, an anchor dock having a second bore corresponding to the first bore to couple with the angle adjustment dock, and an axle running through the first bore and the second bore. The port replicator thus constructed is simple to fabricate and assemble, and is adaptable to notebook computers of varying thickness to provide a steady and secure coupling.
    Type: Application
    Filed: August 2, 2004
    Publication date: February 2, 2006
    Inventors: Wen-Chieh Kuo, Yuan-Hua Wen
  • Publication number: 20060009078
    Abstract: A multipurpose memory card adapter including a base and a cover. The base has first conductive pieces corresponding to connecting fingers of memory cards of Secure Digital (SD) card, Multimedia Card (MMC) and Reduced Size Multimedia Card (RS-MMC). A plurality of guide pieces is formed at a front end of the first conductive pieces to allow for a smooth insertion of the memory cards in position. The base further includes second conductive pieces corresponding to connecting fingers of mini SD card. A first end stop at which the mini SD card to be inserted into the base arrives is located at a farther position away from an insertion opening than a second end stop for the SD card and the MMC card. A side stop and a guide chamfer are formed between the first end stop and the second end stop. Meanwhile, a detecting piece and a write protection piece are provided at one side of the base. In addition, a plurality of mounting bosses is formed at the periphery of the base.
    Type: Application
    Filed: March 25, 2005
    Publication date: January 12, 2006
    Inventor: Yuan-Hua Chen
  • Publication number: 20060009079
    Abstract: A dual purpose memory card adapter comprising a base and a cover. The base is configured as a female connector with a plurality of positioning fingers corresponding to conducting pieces of MS (Memory Stick) and MS Duo cards. The positioning fingers are uniformly spaced within the memory card adapter. Accordingly, the memory card adapter can be shared by MS and MS Duo cards. Besides, the positioning fingers prevent the MS and MS Duo cards from a false insertion into the memory card adapter in a reverse direction.
    Type: Application
    Filed: March 25, 2005
    Publication date: January 12, 2006
    Inventor: Yuan-Hua Chen
  • Publication number: 20060008278
    Abstract: Apparatus and methods for generating chirped return-to-zero (CRZ) differential phase-shift keyed (DPSK) optical signals using a single modulator driven by synchronous return-to-zero (RZ) drive signals to achieve simultaneous RZ pulse formatting and chirped DPSK data modulation.
    Type: Application
    Filed: June 30, 2004
    Publication date: January 12, 2006
    Inventors: Yuan-Hua Kao, Xiang Liu
  • Publication number: 20050265733
    Abstract: An apparatus and method for generating chirp-free return-to-zero differential phase-shift keyed optical signals using a modulator driven by at least one 3-level return-to-zero drive signals.
    Type: Application
    Filed: May 28, 2004
    Publication date: December 1, 2005
    Inventors: Yuan-Hua Kao, Xiang Liu
  • Publication number: 20050247786
    Abstract: A dual usage memory card connector includes a housing holding a set of terminals, the housing having two spring arms disposed at two sides and movable between a first position where a MS Duo memory card is insertable into the housing and a second position where a MS memory card is insertable into the housing, a metal top cover covering the housing, the top cover having a spring plate, a curved holding down portion forwardly extended from the spring plats for holding down a MS or MS Duo memory card inside the housing, and two limiters for holding the spring arms in the first position for the insertion of a MS Duo memory card into the housing, the spring plate being forced upwards to disengage the limiters from the spring arms upon insertion of a MS memory card.
    Type: Application
    Filed: May 10, 2004
    Publication date: November 10, 2005
    Inventor: Yuan-Hua Chen
  • Patent number: 6932652
    Abstract: A memory card connector includes a casing defining an upper receiving space for accommodating a SD card and a lower receiving space for accommodating a mini SD card, terminals mounted in the casing, each terminal having a first contact portion for the contact of a SD card and a second contact portion for the contact of a min SD card, a cover closed on the casing, the cover having a springy retaining frame suspended on the middle and a holding down tongue extended from the front side of the springy retaining frame for holding down a memory card in the casing, and two clamping strips mounted in the casing at two sides for clamping a mini SD card in the lower receiving space of the casing.
    Type: Grant
    Filed: May 10, 2004
    Date of Patent: August 23, 2005
    Assignee: Kingconn Technology Co., Ltd.
    Inventor: Yuan-Hua Chen
  • Publication number: 20050069330
    Abstract: A system and method for generating multilevel coded optical signals for optical transmission are disclosed. The method comprises driving modulators with synchronous data signals having the same data rate to generate a multilevel optical signal using differential phase shift keying and amplitude shift keying modulation.
    Type: Application
    Filed: September 29, 2003
    Publication date: March 31, 2005
    Inventors: Yuan-Hua Kao, Xiang Liu, Xing Wei
  • Patent number: 6835100
    Abstract: A connector structure for multi-storage media comprises: a printed circuit board; a housing; a plurality of first terminals; a plurality of second terminals; a plurality of third terminals; and a plurality of fourth terminals; thereby, when inserting a plurality of memory cards such as xD card, SD/MMC card, Smart Media card or a MS card, respectively into the insertion slot from the front end of the housing, a plurality of contacts of the memory cards can contact with the first terminals, second terminals, third terminals or fourth terminals respectively for accessing the memory cards.
    Type: Grant
    Filed: April 2, 2004
    Date of Patent: December 28, 2004
    Assignee: Kingconn Technology Co., Ltd.
    Inventor: Yuan-Hua Chen
  • Publication number: 20040229511
    Abstract: A memory card adapter is constructed to include a housing formed of a bottom cover shell and a top cover shell and compatible to the SD (Secure Digital) card slot of an electronic apparatus, a set of terminals mounted in the bottom cover shell, a cartridge fastened pivotally with the bottom cover shell and turned in and out of an opening in the top cover shell between a horizontal position and a lifted position and adapted to accommodate a mini memory card, and a retaining spring mounted in the bottom cover shell and adapted to lock the cartridge when the cartridge set in the horizontal position.
    Type: Application
    Filed: May 16, 2003
    Publication date: November 18, 2004
    Inventor: Yuan-Hua Chen
  • Publication number: 20040208648
    Abstract: A method and apparatus for transmitting optical pulses in a dispersion-managed optical transmission system comprises determining the pulse width of optical pulses in a optical transmission channel in accordance with the path-average dispersion (PAD) experienced by that channel.
    Type: Application
    Filed: March 8, 2002
    Publication date: October 21, 2004
    Inventors: Daniel A. Fishman, Yuan-Hua Kao, Taras Igorevich Lakoba, Frank J. Peragine
  • Patent number: 6761320
    Abstract: A connector structure for multi-storage media is constructed to include an insulating housing defining an insertion slot for receiving one of a set of memory cards, comprising: a plurality of first terminals; a plurality of second terminals; a plurality of third terminals; and a plurality of fourth terminals; thereby, when inserting a memory card into the insertion slot from the front side of the housing, a plurality of contacts of the memory card can contact with the first terminals, second terminals, third terminals or fourth terminals respectively for accessing the memory card. Wherein the memory card can be a xD card, a SD/MMC card, a Smart Media card or a MS card.
    Type: Grant
    Filed: April 14, 2003
    Date of Patent: July 13, 2004
    Assignee: Kingconn Technology Co., Ltd.
    Inventor: Yuan-Hua Chen
  • Patent number: 6672904
    Abstract: A memory card connector is constructed to include a housing, first terminals, second terminals, third terminals and fourth terminals installed in said housing for the contact of a SM card, a memory stick, a SD card/multimedia memory card, or xD memory card respectively, and a lever fastened pivotally with the housing and supported on a spring member for controlling the insertion of an assigned memory card into the housing.
    Type: Grant
    Filed: February 5, 2003
    Date of Patent: January 6, 2004
    Assignee: Kingconn Technology Co., Ltd.
    Inventor: Yuan-Hua Chen
  • Patent number: 6671079
    Abstract: A method and apparatus for transmitting a modulated optical signal includes a continuous source of light, a first optical modulator for generating an optical pulse stream in response to a radio frequency (RF) driving signal and a DC bias signal, and a second modulator for modulating the optical pulse stream with an electrical data signal. A processor dithers the phase of the RF driving signal using a first dither signal and the level of the DC bias signal using a second dither signal. The processor detects the first and/or second dither signals in the modulated optical signal and adjusts the phase of the RF driving signal and/or level of the DC bias signal to null the detected first and/or second dither signal.
    Type: Grant
    Filed: December 14, 2001
    Date of Patent: December 30, 2003
    Assignee: Lucent Technologies Inc.
    Inventors: Richard Clair Fuller, Yuan-Hua Kao, Frank J. Peragine
  • Publication number: 20030112487
    Abstract: A method and apparatus for transmitting a modulated optical signal includes a continuous source of light, a first optical modulator for generating an optical pulse stream in response to a radio frequency (RF) driving signal and a DC bias signal, and a second modulator for modulating the optical pulse stream with an electrical data signal. A processor dithers the phase of the RF driving signal using a first dither signal and the level of the DC bias signal using a second dither signal. The processor detects the first and/or second dither signals in the modulated optical signal and adjusts the phase of the RF driving signal and/or level of the DC bias signal to null the detected first and/or second dither signal.
    Type: Application
    Filed: December 14, 2001
    Publication date: June 19, 2003
    Inventors: Richard Clair Fuller, Yuan-Hua Kao, Frank J. Peragine
  • Publication number: 20030095990
    Abstract: The invention relates to microemulsion comprising oils having defined cleansing and spreadability and providing superior cleansing, mildness, and good feel relative to conventional, non-microemulsion products.
    Type: Application
    Filed: June 19, 2001
    Publication date: May 22, 2003
    Applicant: Unilever Home & Personal Care USA, Division of Conopco, Inc.
    Inventors: Xi Yuan Hua, Leonard Van Gorkom, Michael Paul Aronson, Zhenhe Zhu
  • Publication number: 20030004404
    Abstract: The invention provides non-contact (non-invasive) method for measuring quantity of sebum oil on skin as other substrate. Because the measurements are truly non-contact, they can be made in real time on the same sites for any desired length of time.
    Type: Application
    Filed: June 19, 2001
    Publication date: January 2, 2003
    Applicant: Unilever Home & Personal Care USA, Division of Conopco, Inc.
    Inventors: Krishna Kumar Subramanyan, Leonard Van Gorkom, Zhenhe Zhu, Xi Yuan Hua, Archana K. Sah, Thomas Hancewicz
  • Patent number: 6302701
    Abstract: A sub-miniature push-on RF connector for connecting a transmission line to a signal sink. The connector has a shielded transmission line section having a signal line and a ground line extending axially through the connector. A center pin is coupled to the signal line and extends from the center of a front face of the connector in an axial direction. A semicircular tab coupled to the ground line extends from the front face of the connector substantially along the length of the center pin and partially surrounding the center pin to reduce an air gap impedance, the tab having first and second wire bonding surfaces at the ends of the semicircular shape thereof and disposed adjacent to said center pin.
    Type: Grant
    Filed: May 30, 2000
    Date of Patent: October 16, 2001
    Assignee: Agere Systems Optoelectronics Guardian Corp.
    Inventors: Thomas J. Miller, Jr., Yuan-Hua Kao, Bettina A. Nechay, Hidenori Nakanishi, Takashi Igarashi, Motoyoshi Tanaka
  • Patent number: 6198317
    Abstract: An N times frequency multiplication circuit uses duty cycle control buffers in combination with edge detectors to provide both multiplication and 50% duty cycle adjustment. Parallel branches of duty cycle control buffers are preset for respective duty cycles of 1/N, 2/N,...,N−1/N. The buffers each receive a common edge detected input signal and simultaneously output their respective duty cycle adjusted clock signals. A rising and falling edge detector generates a pulse train at double the frequency of the 1/N buffer output, while falling edge detectors generate time spaced pulse trains from the outputs of their respective 2/N,...,N−1/N buffers. These pulse trains are combined in an OR gate to provide an output pulse train at a frequency N times the input clock frequency fin. A final stage duty cycle control buffer adjusts the N times fin output signal to a 50% duty cycle.
    Type: Grant
    Filed: September 9, 1999
    Date of Patent: March 6, 2001
    Assignee: Industrial Technology Research Institute
    Inventors: Hwang-Cherng Chow, Yuan-Hua Chu, Chi-Chang Shuai