Patents by Inventor An-I Yeh

An-I Yeh 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: 6291898
    Abstract: A BGA package includes a chip with an array pad design disposed on the upper surface of a substrate. The chip has a plurality of bonding pads located about the periphery thereof, and the bonding pads of the chip are positioned in three rows, an inner row, a middle row, and an outer row along the sides of the chip. Only power supply pads and ground pads are designed to be located in the outer row of bonding pads, and all of the I/O pads are designed to be located in the middle row of the bonding pads and the inner row of the bonding pads.
    Type: Grant
    Filed: March 27, 2000
    Date of Patent: September 18, 2001
    Assignee: Advanced Semiconductor Engineering, Inc.
    Inventors: Yung I Yeh, Te Tsung Chao, Ya Ping Hung, Hui Chin Fang
  • Patent number: 6252309
    Abstract: A packaged semi-conductor substrate includes a package encapsulant pouring area, a layout provided on the substrate, a layer of solder mask deposited on the layout, and a film provided on the solder mask. When the package encapsulant is pouted into the package encapsulant pouring area, the package encapsulant is isolated from the solder mask by the film. An adhering force between the film and the package encapsulant is greater than an adhering force between the film and the mask such that the film is degated along with the package encapsulant in the pouring channel during a degating procedure of the pouring channel after a pouring procedure of the package encapsulant. Thus, the film and the package encapsulant are not residual on the substrate.
    Type: Grant
    Filed: January 8, 1999
    Date of Patent: June 26, 2001
    Assignee: Advanced Semiconductor Engineering, Inc.
    Inventors: Wu-Chang Wang, Yung-I Yeh, Kun-Ching Chen, Shyh-Ing Wu
  • Patent number: 6198845
    Abstract: The background grey-level of a document is determined based on the gain of the document. A histogram is generated and compressed. The standard deviation of the distribution curve of the compressed histogram is determined. A gain factor is determined using the mean and standard deviation. Using the background grey-level, the dynamic range of the document is adjusted.
    Type: Grant
    Filed: July 1, 1997
    Date of Patent: March 6, 2001
    Assignee: Xerox Corporation
    Inventors: Francis K. Tse, Barbara L. Farrell, Ramesh Nagarajan, Andre M. Blaakman, Richard S. Fox, George W. Lahue, Thomas I. Yeh
  • Patent number: 5982625
    Abstract: A semiconductor packaging device includes a printed circuit board substrate, a mold gate formed on a periphery of the printed circuit board substrate through which a package encapsulant is poured to enclose electric elements mounted on a side of the printed circuit board, and a layer of non-metallic material covered on the side of the printed circuit board substrate in the mold gate area. The package encapsulant, after hardened, is bonded with the layer of non-metallic material, and the bonded package encapsulant/the layer of non-metallic material is degatable from the mold gate.
    Type: Grant
    Filed: March 19, 1998
    Date of Patent: November 9, 1999
    Assignee: Advanced Semiconductor Engineering, Inc.
    Inventors: Kun-Ching Chen, Tao-Yu Chen, Yung-I Yeh, Wu-Chang Wang, Chun-Che Lee, Chun-Hsiung Huang, Shyh-Ing Wu
  • Patent number: 5966853
    Abstract: The invention relates to a movable Christmas tree moving mechanism, particularly to one comprising a foundation, a connecting rod set, a U-shaped support, a cover plate, a mouth movement and an eye movement, whereby the coordination of an overlapped round cam on the foundation, and a short rod, low rod and a high rod in the connecting rod set, along with the configuration of a moving block of a U-shaped support, a mouth movement and an eye movement enables the movement of the jaw, eyes and head on a toy face.
    Type: Grant
    Filed: September 3, 1998
    Date of Patent: October 19, 1999
    Inventor: Chun I Yeh
  • Patent number: 5742708
    Abstract: A system and process prints a high resolution image on a high addressable image output terminal by converting an image at one resolution to an image having a lower resolution in a fast-scan direction and a higher resolution in a pixel depth direction. The converted image is then processed and binarized prior to being printed on a high addressable printer. The system or process utilizes a conversion circuit which includes a two-bit per pixel packing circuit, a scanline buffer circuit, a logic circuit, and a look-up table. The conversion circuit initially converts the image into an image having a lower resolution in the fast-scan direction and a higher pixel depth resolution. Thereafter, the image is further converted to an image having a lower resolution in the slow-scan direction and a higher pixel depth resolution. This conversion of a high resolution image to a lower resolution is carried without any substantial lost to the image content data.
    Type: Grant
    Filed: November 15, 1995
    Date of Patent: April 21, 1998
    Assignee: Xerox Corporation
    Inventors: Thomas I. Yeh, Francis K. Tse, George W. Lahue
  • Patent number: 5706409
    Abstract: There is provided an image data shifting system for a document processing system including a scanning device for reading a document including one or more hardcopy pages and converting the hardcopy pages to corresponding electronic pages with each electronic page being represented by image data. Each hardcopy page is scanned as a series of scanlines and the scanner generates a signal prior to scanning each scanline. Each scanline read by the scanner is stored in memory as image data representative of one of the electronic pages. The image shifting system includes a detector for detecting a first signal generated by the scanner and a second signal generated by the scanner.
    Type: Grant
    Filed: July 1, 1996
    Date of Patent: January 6, 1998
    Assignee: Xerox Corporation
    Inventors: Thomas I. Yeh, Peter T. Palamar
  • Patent number: 5659634
    Abstract: An apparatus for processing an input image, represented by an input bit stream including a plurality of first bit sets, is provided. The apparatus includes a device for processing the input bit stream in such a manner that each of the first bit sets is represented by a second bit set with each of the second bit sets having less bits than each of the first bit sets and a selected number of bits in the input bit stream, corresponding to image-related information, being discarded as a result of the encoding. The apparatus is provided with an electronic volatile memory for storing a resulting encoded bit stream and a bit stream analyzer for analyzing the stored encoded bit stream to generate positional signals. The apparatus is further provided with a reconstruction circuit for reconstructing the stored encoded bit stream, by reference to the positional signals.
    Type: Grant
    Filed: September 29, 1994
    Date of Patent: August 19, 1997
    Assignee: Xerox Corporation
    Inventors: Thomas I. Yeh, Francis K. Tse, Anthony M. Frumusa, Aron Nacman, Kenneth D. Romano
  • Patent number: 5528387
    Abstract: A system electronically registers an image on an input document. The system includes a scanner for generating an image data stream representing an electronic image of the image on the input document and an edge detecting circuit for detecting edge data within the image data stream. A circuit calculates a skew angle of the input document based on the detected edge data and rotates the electronic image based on the calculated skew angle to register the electronic image with an output medium. The system also includes a non-image area generating circuit for generating areas in the electronic image which correspond to non-image areas based on the calculated skew and detected edge data. The skew calculation, rotation operation and the non-image area generation is based the electronic detection of the corners and center of the leading edge of the document being scanned.
    Type: Grant
    Filed: November 23, 1994
    Date of Patent: June 18, 1996
    Assignee: Xerox Corporation
    Inventors: Nancy R. Kelly, Thomas I. Yeh
  • Patent number: 5509108
    Abstract: There is provided a control apparatus for a printing machine located in a building with a portion of the building being characterized by an environmental state. The printing machine includes a print machine component, while the control apparatus includes a communication line, operatively coupled with the printing machine, across which signals are transmitted. A sensing arrangement, communicating with the communication line, transmits a signal, representative of the environmental state of the building portion, across the communication line. An interface receives and converts the signal to a control signal, the control signal being used to control the print machine component.
    Type: Grant
    Filed: September 30, 1993
    Date of Patent: April 16, 1996
    Assignee: Xerox Corporation
    Inventor: Thomas I. Yeh
  • Patent number: 5398181
    Abstract: A system controls a transformer having a primary coil. A pulse is applied to an inverter associated with the primary coil, whereby a leading edge of the pulse creates in the primary coil a tank circuit current of an initial polarity in a tank circuit inherent to the transformer. The tank circuit is seen from an effective inductance in series with the primary coil, the effective inductance including a leakage inductance of the primary coil, and an effective capacitance in parallel with the primary coil, the effective capacitance including a parasitic capacitance of the transformer. A trailing edge of the pulse occurs when the tank circuit current is different from the initial polarity.
    Type: Grant
    Filed: March 21, 1994
    Date of Patent: March 14, 1995
    Assignee: Xerox Corporation
    Inventor: Thomas I. Yeh
  • Patent number: 5361123
    Abstract: A charging device for producing a voltage potential on a photoconductive member including a corona generator for charging a portion of the image receptor to a substantially uniform potential; a corona generating potential source electrically connected to the corona generator; a sensor for determining the potential on the image receptor; and a microprocessor including an analog to digital converter interconnected to the corona generating potential source; the sensor; and the controller for regulation of the potential on the image receptor.
    Type: Grant
    Filed: August 23, 1993
    Date of Patent: November 1, 1994
    Assignee: Xerox Corporation
    Inventors: Thomas I. Yeh, Clifford K. Friend, Timothy A. Cole, Leo R. Farnand
  • Patent number: 4885820
    Abstract: A hinge for joining surfaces of sheet material comprises a strip of film/foam laminate positioned with a foam layer across the surfaces to be joined. The foam layer is tackified by heating and pressure is applied to the strip, thus heat sealing the strip to the surfaces. The hinge strip is preferably polyethylene film laminated to polyethylene foam and the surfaces to be joined may be polyethylene foam or a film/foam laminate.The joined surfaces are not damaged or destroyed by the heat lamination. The foam layer of the hinge sealing strip is partially or substantially melted and the film upper layer of the heat sealing strip forms a permanent waterproof bond with the surfaces which it joins.
    Type: Grant
    Filed: October 30, 1987
    Date of Patent: December 12, 1989
    Assignee: Packaging Industries Group, Inc.
    Inventors: Jack P. Erceg, Tzong I. Yeh
  • Patent number: 4856056
    Abstract: An apparatus is provided for programmably silencing a telephone ringer for one or more predetermined periods of time on a daily basis. In accordance with the time set by a user, the apparatus places the telephone ringer under the control of the data stored in the read only memory and the random access memory of the central processing unit, whereby the ringer can be automatically set at predetermined sounding condition.
    Type: Grant
    Filed: June 18, 1987
    Date of Patent: August 8, 1989
    Assignee: Inventa Electronics Co., Ltd.
    Inventor: Kou-I Yeh
  • Patent number: 4826576
    Abstract: Isopropyl acetate cannot be completely removed from isopropyl acetate--isopropanol--water mixtures by distillation because of the presence of the minimum ternary azeotrope. Isopropyl acetate can be readily removed from mixtures containing it, isopropanol and water by using extractive distillation in which the extractive agent is a mixture of a polyol and one or higher boiling oxygenated, nitrogenous and/or sulfur containing organic compounds. Typical examples of effective agents are 1,3-butanediol and dimethylsulfoxide; 1,2,6-hexanetriol, dimethylsulfoxide and dimethylformamide.
    Type: Grant
    Filed: June 2, 1986
    Date of Patent: May 2, 1989
    Assignee: Lloyd Berg
    Inventors: Lloyd Berg, An-I Yeh
  • Patent number: 4822947
    Abstract: m-Xylene is difficult to separate from o-xylene by conventional distillation or rectification because of the close proximity of their boiling points. m-Xylene can be readily separated from o-xylene by using extractive distillation in which the extractive agent is dimethylsulfoxide or a mixture of it with certain high boiling organic compounds. Typical examples of effective agents are: dimethylsulfoxide; dimethylsulfoxide and 1,4-butanediol; dimethylsulfoxide, nitrobenzene and diethylene glycol.
    Type: Grant
    Filed: June 15, 1987
    Date of Patent: April 18, 1989
    Assignee: Lloyd Berg
    Inventors: Lloyd Berg, An-I Yeh
  • Patent number: 4802208
    Abstract: A hot-line device for telephone sets includes a logic AND gate circuit serving as a central unit with its output to be electrically connected to a control circuit through the keyboard of a telephone set, and its inputs respectively coupled with a hot-line triggering circuit, a dial-tone detection circuit and a ringing detection and delay circuit separately disposed in the telephone set for automatically effecting dialing operation during an emergency situation. Alternatively, the logic AND gate circuit can be replaced with a microprocessor for performing automatic dialing operation through a predetermined program.
    Type: Grant
    Filed: May 19, 1987
    Date of Patent: January 31, 1989
    Assignee: Inventa Electronics Co., Ltd.
    Inventor: Kou-I Yeh
  • Patent number: 4794640
    Abstract: A switching control apparatus for intercom-telephone sets includes a switching control circuit and a surge protection circuit electrically coupled with a talking circuit for increasing the reliability of the intercom-telephone operation, reducing the cost of manufacturing the product and protecting the intercom-telephone sets against high voltage surges which may damage the intercom-telephone sets during electrical storms.
    Type: Grant
    Filed: February 24, 1987
    Date of Patent: December 27, 1988
    Assignee: Inventa Electronics Co., Ltd.
    Inventor: Kou-I Yeh
  • Patent number: 4738755
    Abstract: m-Xylene is difficult to separate from o-xylene by conventional rectification or distillation because of the close proximity of their boiling points. m-Xylene can be readily separated from o-xylene by using extractive distillation in which the extractive agent is ethyl-2-hydroxybenzoate; methyl benzoate plus benzophenone; methyl benzoate, butyl benzoate and dimethylsulfoxide.
    Type: Grant
    Filed: March 10, 1987
    Date of Patent: April 19, 1988
    Inventors: Lloyd Berg, An-I Yeh
  • Patent number: 4735690
    Abstract: Impure formic acid cannot be completely removed from formic acid-water-impurity mixtures by distillation because of the presence of the maximum azeotrope between formic acid and water. Formic acid can be readily removed from mixtures containing it, water and impurities of the ether, ester, ketone or diketone type by using extractive distillation in which the extractive agent is a higher boiling oxygenated, nitrogenous or sulfur containing organic compound or a mixture of these. Examples of effective agents are adiponitrile; sulfolane and salicyclic acid; dimethylformamide, N,N-dimethylacetamide and ethylene glycol ethyl ether acetate.
    Type: Grant
    Filed: April 28, 1986
    Date of Patent: April 5, 1988
    Inventors: Lloyd Berg, An-I Yeh