Patents by Inventor Jack Chang

Jack Chang 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: 20070025119
    Abstract: An LED module is disclosed to include a light guide tube, two LEDs provided at the two ends of the light guide tube, a reflector strip, which has an arched reflecting surface for reflecting light from the LEDs, and a converter for converting input power supply to the desired working voltage level for the LEDs.
    Type: Application
    Filed: August 1, 2005
    Publication date: February 1, 2007
    Applicant: LEDTECH ELECTRONICS CORP.
    Inventors: Wen-Jack Chang-Jien, Ming-Chung Huang, Yu-Yang Liu
  • Patent number: 7062035
    Abstract: A community dialing circuit apparatus for IP phone and POTS phone is provided. The apparatus includes an IP phone system, a POTS phone system, an insulation system connected between the IP phone system and the POTS system, and a keypad connected to the IP phone system and the POTS system for inputting the phone number. When the city power is on and a phone number having a format of the IP phone number is inputted, the POTS phone is disabled and the IP phone is activated. When the city power is on and a phone number having a first format of the POTS phone number is inputted, the POTS phone is activated and the IP phone is disabled. When the city power is off and a phone number having a second format of the POTS phone number is inputted, the IP phone is turned off and the POTS phone is activated.
    Type: Grant
    Filed: November 24, 2003
    Date of Patent: June 13, 2006
    Assignee: Leadtek Research Inc.
    Inventors: Jimmy Wu, Jack Chang
  • Publication number: 20060093866
    Abstract: A thin film disk for use in magnetic recording with an underlayer structure that includes a layer of CrMoZr, CrMoNb or CrMoMn is described. The preferred embodiment includes a circumferentially textured glass substrate, a pre-seed layer, a B2 seed layer, an underlayer structure and a magnetic layer stack with a plurality of layers. The preferred underlayer structure has a first underlayer of CrTi followed by a second underlayer of CrMoZr. The preferred B2 seed layer material is RuAl. The preferred pre-seed layer is CrTiAl. The preferred magnetic layer stack is CoCr/CoPtCrB/CoPtCrBCu. The preferred embodiment is useful for longitudinal magnetic recording. The in-plane crystallographic orientation, the Mrt orientation ratio and the media SNR are improved by the inclusion of the CrMoZr, CrMoNb or CrMoMn according to the invention.
    Type: Application
    Filed: October 29, 2004
    Publication date: May 4, 2006
    Inventors: Xiaoping Bian, Jack Chang, Ernesto Marinero, Mohammad Mirzamaani
  • Publication number: 20040264680
    Abstract: A community dialing circuit apparatus for IP phone and POTS phone is provided. The apparatus includes an IP phone system, a POTS phone system, an insulation system connected between the IP phone system and the POTS system, and a keypad connected to the IP phone system and the POTS system for inputting the phone number. When the city power is on and a phone number having a format of the IP phone number is inputted, the POTS phone is disabled and the IP phone is activated. When the city power is on and a phone number having a first format of the POTS phone number is inputted, the POTS phone is activated and the IP phone is disabled. When the city power is off and a phone number having a second format of the POTS phone number is inputted, the IP phone is turned off and the POTS phone is activated.
    Type: Application
    Filed: November 24, 2003
    Publication date: December 30, 2004
    Inventors: JIMMY WU, JACK CHANG
  • Publication number: 20040064658
    Abstract: An access control method and apparatus for a RAID storage device that includes a data hard disk and a backup hard disk are disclosed herein. In response to a write command, data associated with the write command is written onto the data hard disk and the backup hard disk concurrently. Moreover, in response to a read command, data corresponding to the read command is read from the data hard disk, and the data read from the data hard disk is written concurrently onto the backup hard disk.
    Type: Application
    Filed: December 4, 2002
    Publication date: April 1, 2004
    Applicant: Dynapac Corporation
    Inventor: Jack Chang
  • Publication number: 20030008104
    Abstract: A freely stretchable three dimensional packaging sheet includes a plurality of elongated members made of recycled material which curves in a continuous corrugated fashion, wherein each of the elongated members has a plurality of equidistant knots which meet at innermost curving portion, a first one of the elongated members is affixed to a second one of the elongated members so that the knots of the first and second elongated members are joined together, the second one and a third one of the elongated members being joined at their intermediate, outermost curved portions such that the intermediate portion between two knots of the second one of the elongated member is joined to intermediate portion of two knots of the third one of the elongated members, and this pattern of joining thereafter repeats, whereby the packaging sheet can be recycled and is easy for transportation and storage.
    Type: Application
    Filed: July 6, 2001
    Publication date: January 9, 2003
    Inventor: Jack Chang
  • Patent number: 6479169
    Abstract: A magnetic recording medium using a nonmagnetic interlayer in between a Cr-base underlayer and a Co magnetic layer is disclosed. The nonmagnetic interlayer comprises Co1−&agr;−&bgr;−&ggr;−&zgr;Cr&agr;X&bgr;Y&ggr;Z&zgr;. X is a material selected from Ni or Fe so as to substitute a portion of Cr composition. Y is a material selected from materials which can form a solid solution with at least one of list materials consisting of Ni, Fe, Co, and Cr. The Y materials added in the interlayer is to adjust the lattice mismatch of interface between the interlayer and the underlayer to a magnitude so that the interlayer formed on the underlayer at least is a texture layer, an epitaxial layer is best preferred. However, Z is a material which is insoluble with any of above list materials, Cr, Co, X, and Y in a solid state so as to form precipitates, thereby inhibiting the grain growth. In a preferred embodiment, the &agr;, &bgr;, &ggr;, and &zgr; are about 25-41%, 0.1-5%, 0.1-5%, and 0.
    Type: Grant
    Filed: March 16, 2000
    Date of Patent: November 12, 2002
    Assignee: Trace Storage Technology Corp.
    Inventors: Jack Chang, Gina Liang, Wu-Shun Wang, James W. Liang, Hung-Chang W. Huang
  • Publication number: 20020122313
    Abstract: The present invention relates to a fiber optic arrangement for Christmas light having a socket mounted on the Christmas light bulb. A plurality of fiber optic elements are mounted on the socket, thereby increasing the decorating effect of the Christmas light. In addition, a socket is hollow-shaped inside thereof. One end thereof is provided with a mounting opening for receiving a Christmas light bulb while the other end thereof includes a plurality of connecting holes for receiving fiber optic bundles. The connecting holes communicate with the hollow part inside of the socket so that the fiber optic bundles receive the light source of the Christmas light bulb, thereby creating a radial lighting effect.
    Type: Application
    Filed: March 2, 2001
    Publication date: September 5, 2002
    Inventor: Jack Chang
  • Publication number: 20020120788
    Abstract: A method and system may process messages in real time. The computer may analyze the received message in advance when receiving a message from the sender, which means the computer may determine whether or not the received message is the specific message which needs to be processed in real time. If the received message is specific, then, according to the setting reminding method, the system may utilize shaking of the mouse, sending out voice or light or displaying an image on the screen to remind the users. The users thus may respond to the message immediately, which may eliminate the delay of the important message.
    Type: Application
    Filed: April 4, 2001
    Publication date: August 29, 2002
    Inventors: Douglas W. Wang, Wei-Shang Chen, Jack Chang, Chao-Yueh Huang
  • Patent number: 6159132
    Abstract: An oval-tracked exercise device includes a base assembly, a supporting frame assembly fastened on the base assembly, a treadle crank assembly fastened on the rear end of the supporting frame assembly and a wheel assembly fastened at the bottom end of the supporting frame assembly. The bottoms of the treadles have bottom shafts which are fixed to the bottom ends of the front standing shafts. In treading, the transmission gear assembly will be driven by the bottom shaft of the treadle crank assembly to rotate the wheel assembly, so that the front standing shafts and the handles are able to make a pivoting movement on the front lateral shaft in order for the user to exercise the whole body. When the handles are inserted into connecting tubes at the front end of the front lateral shaft, the handles are unable to swing with the front standing shaft and the user is able to exercise only the buttocks without moving the upper body.
    Type: Grant
    Filed: March 10, 1999
    Date of Patent: December 12, 2000
    Inventor: Jack Chang
  • Patent number: 5710573
    Abstract: A display control apparatus is provided to generate a scaled video output overlaid onto a computer graphics output. The display control apparatus includes a timing generator, adapted to receive a horizontal synchronization signal of the computer graphics output and the pixel number of horizontal scan line of the scaled video output, for generating a pixel clock of scaled video output and a horizontal lock signal; a scaling buffer, storing a video digital pixel data and having an output port generating the scaled video output, responsive to the pixel clock of scaled video output; an overlay controller, coupled to a controller bus and receiving an analog pixel data of the computer graphics output and, responsive to the pixel clock of scaled video output, the horizontal lock signal and a vertical synchronization signal of the computer graphics output, for overlaying the scaled video output onto the computer graphics output.
    Type: Grant
    Filed: May 4, 1995
    Date of Patent: January 20, 1998
    Assignee: Winbond Electronics Corp.
    Inventors: Chi-Cheng Hung, Jack Chang, Rong-Fuh Shyu, Wen-I Chu
  • Patent number: 5359719
    Abstract: In a method and apparatus for setting an address range for a computer expansion card of a computer system, the computer system is first controlled so as to execute a write operation which involves a series of addresses within the address range to be assigned to the computer expansion card. A linear feedback shift register receives the series of addresses from address lines of the computer system and derives a code output from the series of addresses. A code detecting unit receives the code output of the linear feedback shift register and compares the code output with a predetermined code. The code detecting unit generates a match signal whenever the code output matches with the predetermined code. An address register is activated by the match signal so as to store most significant bits of the address range to be assigned to the computer expansion card therein. The most significant bits are common to all of the addresses within the address range.
    Type: Grant
    Filed: September 18, 1992
    Date of Patent: October 25, 1994
    Assignee: Winbond Electronic Corp.
    Inventors: Jack Chang, Ching-Bang Lu
  • Patent number: 5154110
    Abstract: An espresso/cappuccino machine includes an upper container defining an upper chamber therein, a lower container defining a lower chamber therein, and a selector valve. A first pipet extends from nearly a bottom of the upper chamber to outside of the upper chamber. A first heating element with a first thermal control element is disposed in the bottom of the upper chamber. A second heating element with a second thermal control element is disposed in the bottom of the lower chamber. A second pipet communicates the upper chamber and the lower chamber. A check valve is provided in the second pipet such that fluid is only flowable from the upper chamber to the lower chamber.
    Type: Grant
    Filed: January 4, 1991
    Date of Patent: October 13, 1992
    Inventor: Jack Chang
  • Patent number: 5100264
    Abstract: A garbage pail with electronic control for opening and closing its cover, characterized mainly in that, upon an induction of a sensor to the visible or invisible light it can control the opening and closing action of the cover of garbage pail automatically instead of manual operation in order to improve a fine living quality.
    Type: Grant
    Filed: April 19, 1990
    Date of Patent: March 31, 1992
    Inventors: Jack Chang, C. L. Hsio
  • Patent number: 5068932
    Abstract: A baby crib includes a frame body having a pair of upright support posts, a fence member extending between the upright support posts and having a hollow frame with two ends, and a pair of mounting pieces mounted to the upright support posts so as to connect the fence member to the upright support posts. Each of the mounting pieces has a flat plate member formed with a plurality of spaced engaging slots and a pair of first slide rails. Each of a pair of slide bodies has a slide portion with a through hole to be selectively aligned with one of the engaging slots, and a pair of second slide rails slidably engaging the first slide rails. Each of the slide bodies includes a housing portion that projects from the slide portion into one of the two ends of the hollow frame. A pair of engaging members is movably mounted inside the housing portion of the slide bodies.
    Type: Grant
    Filed: May 18, 1990
    Date of Patent: December 3, 1991
    Inventor: Jack Chang
  • Patent number: D463015
    Type: Grant
    Filed: November 14, 2001
    Date of Patent: September 17, 2002
    Assignee: Evertek Industries, Inc.
    Inventor: Jack Chang
  • Patent number: D394047
    Type: Grant
    Filed: July 1, 1997
    Date of Patent: May 5, 1998
    Assignee: UMAX Data Systems Inc.
    Inventors: Jack Chang, Tony Chen
  • Patent number: D410527
    Type: Grant
    Filed: September 17, 1998
    Date of Patent: June 1, 1999
    Assignee: Dynaflo Industries Corporation
    Inventors: Jack Chang, Mike Hsu
  • Patent number: D415825
    Type: Grant
    Filed: December 23, 1997
    Date of Patent: October 26, 1999
    Assignee: Dynaflo Industries Corporation
    Inventors: Jack Chang, Mike Hsu