Patents Represented by Attorney McGinn & Gibb, PLLC
  • Patent number: 6941075
    Abstract: In a 32-channel wavelength division multiplexing optical transmission system, for example, four optical transmitters are grouped in eight groups. Each group is provided with a control optical transmitter. The control light transmitter regulates the level of a control light so that the total level of light transmitted from the corresponding group is equal to the total level of four signal lights. An optical transmission line of the above-mentioned system is normally regulated beforehand so that the wavelength characteristic of the following signal lights is flat when light at the total level of thirty-two signal lights in a predetermined range of wavelengths is transmitted. Therefore, in the system according to the invention, independent of the number of signal lights, the receive level of a signal light is unchangeable.
    Type: Grant
    Filed: August 1, 2001
    Date of Patent: September 6, 2005
    Assignee: NEC Corporation
    Inventors: Yukio Michishita, Hiroaki Murakami
  • Patent number: 6941528
    Abstract: The invention provides a method and structure for optimizing placement of redundant vias within an integrated circuit design. The invention first locates target vias by determining which vias do not have a redundant via. Then, the invention draws marker shapes on or adjacent to the target vias. The marker shapes are only drawn in a horizontal or vertical direction from each of the target vias. The invention simultaneously expands all of the marker shapes in the first direction to a predetermined length or until the marker shapes reach the limits of a ground rule. During the expanding, different marker shapes will be expanded to different lengths. The invention determines which of the marker shapes were expanded sufficiently to form a valid redundant via to produce a first set of potential redundant vias and the invention eliminates marker shapes that could not be expanded sufficiently to form a valid redundant via.
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: September 6, 2005
    Assignee: International Business Machines Corporation
    Inventors: Robert J. Allen, Jason D. Hibbeler, Gustavo E. Tellez
  • Patent number: 6937312
    Abstract: A black matrix layer 14 is formed on a counter substrate 13 along the direction where a scanning line 2 extends, so that it continuously covers the upper parts of a common electrode line 3a, the scanning line 2, a space between the common electrode line 3a and the scanning line 2, a TFT 5, a space between the scanning line 2 and a common electrode line 3b, and the common electrode line 3b, and in the portion opposed to the signal line, the black matrix layer is eliminated.
    Type: Grant
    Filed: March 26, 2003
    Date of Patent: August 30, 2005
    Assignee: NEC LCD Technologies, Ltd.
    Inventors: Tsutomu Kadotani, Shoichi Kuroha
  • Patent number: 6938178
    Abstract: A terminal device such as a mobile terminal is provided with two real-time clocks which are powered by different power sources: a first real-time clock which is built in a control section (built-in microcomputer 1, for example) of the terminal device; and a second real-time clock which is provided outside the control section. At power-on of the mobile terminal or on recovery from failure such as a power cut, clock/calendar information is read out from the second real-time clock and is set to the first real-time clock, and thereafter, the control section obtains the clock/calendar information from the first real-time clock. The second real-time clock is connected to the control section directly by a signal line or via a functional device, or the second real-time clock is built in a functional device which is connected to the control section. By such composition and operation, the clock/calendar information can be maintained reliably and correctly even if failure occurred to the control section.
    Type: Grant
    Filed: February 13, 2002
    Date of Patent: August 30, 2005
    Assignee: NEC Corporation
    Inventor: Masatoshi Yano
  • Patent number: 6936859
    Abstract: A flip chip type of light-emitting semiconductor device using group III nitride compound comprising a thick positive electrode. The positive electrode, which is made of at least one of silver (Ag), rhodium (Rh), ruthenium (Ru), platinum (Pt) and palladium (Pd), and an alloy including at least one of these metals, is adjacent to a p-type semiconductor layer, and reflect light toward a sapphire substrate. Accordingly, a positive electrode having a high reflectivity and a low contact resistance can be obtained. A first thin-film metal layer, which is made of cobalt (Co) and nickel (Ni), or any combinations of including at least one of these metals, formed between the p-type semiconductor layer and the thick electrode, can improve an adhesion between a contact layer and the thick positive electrode. A thickness of the first thin-film metal electrode should be preferably in the range of 2 ? to 200 ?, more preferably 5 ? to 50 ?. A second thin-film metal layer made of gold (Au) can further improve the adhesion.
    Type: Grant
    Filed: April 27, 2000
    Date of Patent: August 30, 2005
    Assignee: Toyoda Gosei Co., Ltd.
    Inventors: Toshiya Uemura, Shigemi Horiuchi
  • Patent number: 6937233
    Abstract: JP920010143US1 A liquid crystal display includes liquid crystal cells for forming an image display area on a substrate, a source driver for applying a voltage to the liquid crystal cells using a plurality of source driver ICs to which power is supplied in a single stroke of the brush fashion and an LCD controller for processing signals received from a host's side via video I/F and supplying the processed signals to the source driver Ics. The source driver delays the start timing for writing the liquid crystal cells among the plurality of source driver ICs respectively to avoid the concentration of current consumption.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: August 30, 2005
    Assignee: International Business Machines Corporation
    Inventors: Katsuyuki Sakuma, Yoshitami Sakaguchi
  • Patent number: 6936777
    Abstract: A two-step switch, which may be minimized in radial direction and is suitable for PCB or FPC circuit board, has a first contact spring, having outer peripheral contacts in regular contact with first fixed contacts and having an inner contact inside the outer peripheral contacts and reversed by depressing, and a second contact spring, stacked on the first contact spring via an insulation sheet, having an outer peripheral contact in regular contact with a second fixed contact and having an inner contact inside of the outer peripheral contact and reversed by depressing. Through a first depressing, the inner contact of the first contact spring is reversed and in contact with the inner contact of the second contact spring, whereby a first electric circuit is actuated. Also through a second depressing, the inner contact of the second contact spring is reversed and in contact with the third fixed contact, whereby a second electric circuit is actuated.
    Type: Grant
    Filed: September 17, 2004
    Date of Patent: August 30, 2005
    Assignee: Fuji Electronics Industries Co., Ltd.
    Inventor: Noboru Kawakubo
  • Patent number: 6937417
    Abstract: A disk drive device in which emergency unloading at the start of the engine is prevented, a head may have a prolonged life and improved reliability as an HDD is achieved. A disk drive device is driven or the movement of a magnetic head is allowed after an engine start in a vehicle is detected by an engine start detecting part, so that emergency unloading can be prevented at the start of the engine. In order to detect the engine start, voltage values on four power supply lines for a vehicle power supply device are monitored or the outputs of various sensors such as a tachometer, a vibration detection sensor, an engine sound detection sensor, a vehicle speed pulse, a gyro sensor and a parking brake are monitored. In another embodiment, the number of emergency unloading occurrence at the start of the engine is reduced, which allows the head to have a prolonged life, so that the disk drive device has improved reliability as an HDD.
    Type: Grant
    Filed: April 23, 2001
    Date of Patent: August 30, 2005
    Assignee: Pioneer Corporation
    Inventors: Koichi Nagaki, Kazunori Matsuo, Keiichi Yamauchi, Michihiro Kaneko, Tomo Watanabe
  • Patent number: 6937642
    Abstract: A common pilot channel-use reverse diffusion unit generates common pilot data using a received digital signal and a common pilot channel-use reverse diffusion code, while an individual channel-use reverse diffusion unit generates individual channel data using the received digital signal and an individual channel-use reverse diffusion code. Power calculating unit converts respective output data items of the common pilot channel-use reverse diffusion unit and the individual channel-use reverse diffusion unit into power values, a larger one of which is then determined by a comparator. A selector unit selects the data item having thus determined larger power value of those output data items of those reverse diffusion units. A channel estimating unit estimates the channel using data symbols of the data item thus selected by the selector unit.
    Type: Grant
    Filed: May 16, 2001
    Date of Patent: August 30, 2005
    Assignee: NEC Corporation
    Inventor: Masaru Hirata
  • Patent number: 6935799
    Abstract: In a stick-like object receiving member having safety precautions, which receives a stick-like object, a sufficient air passage is secured without exerting an influence on the size of the stick-like object or the receiving member. An eraser receiving member 16, which is the stick-like object receiving member, includes a cylindrical side portion 16b which engages with at least a part of the outer peripheral surface of an eraser 13, and surrounds at least a part of the outer peripheral surface of the eraser 13, and a bottom portion 16a which closes one end of the cylindrical side portion 16b. A slit 16e is formed in the cylindrical side portion 16b and bottom portion 16a so as to penetrate the cylindrical side portion 16b and bottom portion 16a in the axial direction, and the slit 16e serves as an air passage.
    Type: Grant
    Filed: August 18, 2003
    Date of Patent: August 30, 2005
    Assignee: Kotobuki & Co., Ltd.
    Inventor: Hidehei Kageyama
  • Patent number: 6937779
    Abstract: An optical module includes a waveguide. In one aspect, an optical active element and an optical waveguide are formed separately, with the optical waveguide being optically coupled to the optical active element, and with the optical waveguide including a spot-size conversion region. In another aspect, a refractive index matching resin, having the same-level refractive index as that of the optical waveguide, is provided between the waveguide and the optical active element. In a further aspect, the waveguide is a Y-type branch waveguide in which a single-mode waveguide section is branched into first and second branch waveguide sections. In a yet another aspect, a device which divides lights of different wavelengths is provided to reflect light of a first wavelength and pass light of another wavelength, separating incoming light from outgoing light.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: August 30, 2005
    Assignee: NEC Corporation
    Inventor: Mamoru Oguro
  • Patent number: 6936840
    Abstract: A memory cell and method of fabricating the memory cell includes an insulating layer formed on a first electrode layer, the insulating layer having a first opening, a stencil layer formed on the insulating layer, and having a second opening formed in an area of the first opening, a phase-change material layer formed on a surface of the first electrode layer in the first opening, and an electrically conductive layer including a first portion formed on the stencil layer and defining a second electrode layer and a second portion formed on the phase-change material layer.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: August 30, 2005
    Assignee: International Business Machines Corporation
    Inventors: Jonathan Zanhong Sun, Simone Raoux, Hemantha Wichramasinghe
  • Patent number: 6938131
    Abstract: To improve the processing speed in a case where a program requiring memory access serialization is executed in a multiprocessor environment with a load instruction out-of-order execution function. Each of CPUs has the function of performing store forwarding (SF) when the address regions of a pair of store and load instructions coincide with each other. Each CPU stops SF and performs store forwarding avoidance (SFA) when the two address regions do not coincide with each other but have an overlap therebetween. Each of SF and SFA is executed with priority over out-of-order execution. Each CPU performs SFA effective in limiting out-of-order execution with respect to a predetermined store instruction on a program and a load instruction mated to the store instruction and given after the store instruction, and ensures that data relating to the store instruction can be observed from other CPUs.
    Type: Grant
    Filed: April 15, 2003
    Date of Patent: August 30, 2005
    Assignee: International Business Machines Corporation
    Inventor: Takeshi Ogasawara
  • Patent number: 6934628
    Abstract: The technology comprises a CD/DVD-ROM controller for storing in advance the map information to show the names of roads and facilities located in respective areas, a current position detector for detecting the current position of the vehicle, a position specification section for specifying any position on the map, a retrieval section for retrieving facilities of a plurality of genres around a specified position based on the map information, an extraction section for extracting retrieved facilities in increasing order of distance to the specified position, a display 10 for displaying extracted facilities on the map based on the map information, a route setting section 42 for calculating/setting the route from the current position to a destination based on the map information by selecting any one of the displayed facilities as the destination, and a guidance section for guiding the vehicle along the specified route.
    Type: Grant
    Filed: May 8, 2002
    Date of Patent: August 23, 2005
    Assignee: Clarion Co., Ltd.
    Inventor: Tomohiro Harada
  • Patent number: 6931876
    Abstract: A cooling apparatus for a system which generates heat therein, includes a chamber for receiving at least a portion of the heat, the chamber containing a refrigerant therein, a condenser for receiving the refrigerant having been heated in the chamber, the refrigerant being pressurized and cooled in the condenser, and at least one coil coupled to the condenser and leading to a region to be cooled. The at least one coil includes a first portion coupled to the condenser, a second portion downstream from the first portion, and a third portion downstream of the second portion. The second downstream portion contains an orifice for free expansion to cause cooling of the region, and the third downstream portion leads from the region to be cooled back to the chamber.
    Type: Grant
    Filed: October 8, 2003
    Date of Patent: August 23, 2005
    Assignee: International Business Machines Corporation
    Inventor: Robert Jacob von Gutfeld
  • Patent number: 6934806
    Abstract: A method (and system) of improving performance of a multiprocessor system, includes proactively flushing and locking an arbitrarily-sized region of memory out of caches of the multiprocessor system.
    Type: Grant
    Filed: September 23, 2002
    Date of Patent: August 23, 2005
    Assignee: International Business Machines Corporation
    Inventors: Thomas Basilio Genduso, Richard Edwin Harper
  • Patent number: 6932880
    Abstract: Transparent parallel planar plates which are members for retaining an optical waveguide are provided erectly in an optical path of light in a transparent vessel in advance. An optical fiber is fixed into the transparent vessel while the optical fiber penetrates the transparent vessel, and an optical sensor is also disposed adjustably. Next, a first photo-curable resin solution is injected into the transparent vessel, and light with a predetermined wavelength for curing is emitted from the optical fiber so that the optical waveguide is self-formed by polymerization reaction. Because the parallel planar plates are transparent, the optical waveguide is formed so as to be extended again from the emission ports of the parallel planar plates. Finally, the optical waveguide is formed so as to reach a bottom surface of the transparent vessel.
    Type: Grant
    Filed: June 11, 2002
    Date of Patent: August 23, 2005
    Assignee: Toyoda Gosei Co., Ltd.
    Inventors: Yukitoshi Inui, Kuniyoshi Kondo, Manabu Kagami, Tatsuya Yamashita, Akari Kawasaki, Hiroshi Ito
  • Patent number: 6931702
    Abstract: An inkjet recording head includes a two-dimensional array of a pressure chambers and corresponding array of piezoelectric elements each for applying a pressure wave to ink in a corresponding pressure chamber. In fabrication, a piezoelectric plate temporarily bonded onto a substrate is subjected to sandblasting to form the plurality of piezoelectric elements After the piezoelectric elements are bonded as a unit onto a diaphragm which constitutes part of the walls of the pressure chambers, the substrate is removed. Dummy patterns equalize the degree of side etching among the piezoelectric elements.
    Type: Grant
    Filed: November 26, 2003
    Date of Patent: August 23, 2005
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Masashige Mitsuhashi, Shigeru Umehara
  • Patent number: 6934671
    Abstract: A method of performing model to hardware correlation that simulates models based upon design criteria and manufactures devices based upon the design criteria. The method evaluates features of the devices during the manufacturing to produce in-line test parametric data, compares the models to the in-line test parametric data to obtain correlation data, and modifies the simulating according to the correlation data.
    Type: Grant
    Filed: May 29, 2001
    Date of Patent: August 23, 2005
    Assignee: International Business Machines Corporation
    Inventors: John E. Bertsch, Daniel S. Coops, David M. Fried
  • Patent number: 6932180
    Abstract: A mode establishing section of a differential limiting control apparatus for a four wheel drive vehicle commands an automatic mode control section or a manual mode control section to output calculated clutch torques according to a signal from a mode switch operated by a driver. In an initial condition of an ignition switch turned on, the execution command is issued to the automatic mode control section, until the driver newly selects the manual mode through the mode switch. Further, when the vehicle travels at a speed higher than a preestablished threshold value, the execution command is outputted to the automatic mode control section, irrespective of the signal from the mode switch.
    Type: Grant
    Filed: October 23, 2003
    Date of Patent: August 23, 2005
    Assignee: Fuji Jukogyo Kabushiki Kaisha
    Inventors: Koji Matsuno, Hideharu Tatsumi, Atsushi Fukuda