Patents Represented by Attorney, Agent or Law Firm Parkhurst & Wendel
  • Patent number: 6914372
    Abstract: Disclosed are an electron-emitting element having a large operating current at a low operating voltage and excellent operation stability, and an electron source, an image display device and the like utilizing such an electron-emitting element, and further a method of fabricating such an element with few process steps at low cost. A cold cathode member is configured utilizing hybrid particle of a first particle serving to emit electrons into the space and a second particle being in the vicinity of the first particle and serving to control the position of the first particle. In this configuration, it is preferable that the first particle have a higher electron emission efficiency than the second particle and that the second particle be conductive.
    Type: Grant
    Filed: October 12, 2000
    Date of Patent: July 5, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Koji Akiyama, Tetsuya Shiratori, Hideo Kurokawa, Toru Kawase
  • Patent number: 6914753
    Abstract: A magnetic disk device configured such that a carriage having an arm on one end and a coil on the other end is pivotally supported rotatably on a chassis, the arm having a magnetic head on its tip, the other end of the carriage loaded with the coil is placed in a magnetic circuit having a magnet the carriage is rotated around an axis core by driving force generated on the coil, and the tip of the arm having the magnetic head is moved over a magnetic disk and a retreat position on a ramp. In such a device, magnetized protrusion is provided on the proximal end of the arm.
    Type: Grant
    Filed: May 2, 2002
    Date of Patent: July 5, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Tetsuya Takashima
  • Patent number: 6914789
    Abstract: A switching power supply apparatus is provided, wherein an optimal blanking interval can be obtained for an entire load range. The switching power supply apparatus is configured such that an on-blanking pulse signal generating circuit 31 generates a blanking pulse signal based on an error voltage signal VEAO, and sets a blanking interval that corresponds to the load condition. For example, the reference voltage and the voltage value of the error voltage signal VEAO are compared and the blanking pulse signal that shortens the blanking interval is generated during a light load, that is, when the voltage value of the error voltage signal VEAO is less than or equal to the reference voltage.
    Type: Grant
    Filed: December 22, 2003
    Date of Patent: July 5, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Tomoko Kinoshita, Yoshihiro Mori
  • Patent number: 6912760
    Abstract: A thin film piezoelectric element used in an actuator unit for fine positioning, and its manufacturing method, the manufacturing method including laminating two piezoelectric thin films held between electrode layers by using adhesive, and selectively removing only the second substrate in order to process the thin films remaining on the first substrate into a plurality of separated structures. After that, an insulating layer and external connecting electrode are formed to cover the exposed surface of the structure, thereby forming a plurality of thin film piezoelectric elements. Resin is applied to cover the thin film piezoelectric element, and a temporary fixing substrate is bonded thereto, and after selectively removing the first substrate, the temporary fixing substrate is separated, and the resin is removed from the piezoelectric element surface in order to separate the plurality of thin film piezoelectric elements.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: July 5, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hirokazu Uchiyama, Hideki Kuwajima
  • Patent number: 6915479
    Abstract: An error correction apparatus and an error correction method according to the present invention can reduce an entire lead-in time of a demodulation system by reducing a lead-in time for deinterleave mode judgement, which greatly affects the entire lead-in time of the demodulation system. This error correction apparatus employs an output signal (perror) from a Reed-Solomon decoding unit that is connected outside of a deinterleave unit, as a trigger for changing deinterleave modes (dimode).
    Type: Grant
    Filed: May 16, 2002
    Date of Patent: July 5, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Senichi Furutani
  • Patent number: 6910520
    Abstract: There is disclosed a mold (1) for casting including: a lower mold (6) having four gates (5) (at least one gate); an upper mold (7) being matched with the lower mold (6) to form a cavity; and side molds (2a), (2b) being matched with the lower mold (6) and upper mold (7) to form the cavity and being split (into at least two). In the mold (1) for casting is constituted an upper surface of a weir (4) of a flat portion of side molds (2a), (2b), and other surfaces of the weir (4) is constituted of a concave portion of the lower molds (6), and the weir (4) is disposed so as to keep a parting line (3) between the side molds (2a), (2b) away. The mold (1) for casting can easily be demolded, and the desired number of gate systems can be formed in desired positions.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: June 28, 2005
    Assignee: Asahi Tec Corporation
    Inventor: Tatsuya Aoki
  • Patent number: 6911753
    Abstract: A gas dynamic bearing motor is provided that is capable of setting a bearing radius to a large value to obtain a sufficient radial stiffness, and preventing lock of the bearing and scattering of wear powder outside the bearing. An annular groove 11 is provided on a lower end surface 87 of a hub 3 to thereby enable a deformation of an inner circumferential surface 82 of the hub 3 when recording disks 9 are loaded on the hub 3 to be suppressed to a small value, thereby enabling partial contact in the radial bearing to be suppressed and lock of the bearing to be prevented. Further, a protrusion 12 is provided on a base 7 in a circumferential direction and fitted in the annular groove 11 to construct a labyrinth seal, thereby enabling scattering of wear powder generated on bearing surfaces outside the bearing to be prevented.
    Type: Grant
    Filed: March 11, 2004
    Date of Patent: June 28, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Taizo Ikegawa, Masahiro Jyono, Yasunori Tokuno, Takeyoshi Yamamoto, Satoko Miki
  • Patent number: 6910933
    Abstract: An organic light-emitting device 10 has the constitution in which an emission region 3 between an anode 2 and a cathode 4 is laminated on a substrate 1. The emission region 3 includes polymer 3A, luminous molecules 3G which are material contributable to emission, and charge transport material 3F. The luminous molecules 3G and the charge transport material 3F are high in concentration at a side close to the cathode 4 and low in concentration at a side close to the anode 2 in a layer thickness direction of the emission region 3. The organic light-emitting device can be formed by luminous material, or luminous material and charge transport material being penetrated into polymer, or polymer in which charge transport material is dispersed, thus providing highly improved luminous efficiency and at the same time facilitating the patterning.
    Type: Grant
    Filed: October 5, 2000
    Date of Patent: June 28, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Mikiko Matsuo, Tetsuya Sato, Hisanori Sugiura, Hitoshi Hisada
  • Patent number: 6909422
    Abstract: Relating to a track ball device for manipulating a cursor moving on a display screen of an electronic apparatus, a track ball device being manipulated precisely while generating a click feel when a ball is rotated, having a small play angle and small size is presented. Beneath the center of the ball, the ball is rotatably supported by four rollers. The section of a contacting portion of the rollers contacting with the ball is a circular sawtooth profile, and the directions of the sawtooth serrations of opposite rollers are reverse to each other. Rollers 2 to 5 have switches as rotation amount detecting units. Further, X roller and Y roller contacting with the outer circumference in the orthogonal direction as seen from above the ball, and third roller hold the ball rotatably. Plural undulations are formed on the outer circumference of large-diameter contacting portions of the X roller and Y roller 3 of circular shaft shape. Rotary encoders are coupled to individual rollers.
    Type: Grant
    Filed: February 6, 2001
    Date of Patent: June 21, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shigeru Yokoji, Tamotsu Yamamoto, Masaki Nakase, Toyoshi Fukumura
  • Patent number: 6908076
    Abstract: An upper mount in a suspension system of an automotive vehicle, including a metal housing, a cylindrical body accommodated in the housing, and an outer metal sleeve bonded to the outer circumferential surface of the elastic body and fitted in the housing, wherein the elastic body has an annular sealing lip integrally formed of a rubber material and located radially outwardly of a central opening formed through an upper wall portion of the housing such that the sealing lip is held in pressing contact with an inner surface of the upward wall portion or a cylindrical wall portion of the housing, for preventing a flow of an aqueous component such as water from the central opening to the outer metal sleeve.
    Type: Grant
    Filed: March 18, 2003
    Date of Patent: June 21, 2005
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Yukio Hayashi, Koichi Kobayashi, Michiharu Hikosaka, Yorikazu Nakamura
  • Patent number: 6909467
    Abstract: A broadcast text data sampling apparatus comprises an A/D converter for sampling a broadcast text signal supplied from the outside, with a sampling clock of a predetermined frequency, to convert the text signal into digital data; a binarization circuit for converting the digital data into a binary signal; a sampling pulse generation circuit for detecting the cycle of clock run-in of the broadcast text signal from the binary signal, obtaining a text data sampling interval value on the basis of the clock run-in cycle, sequentially calculating the positions of data in the binary signal, which data are positioned at intervals close to the sampling interval value, starting from a predetermined sampling start position, and generating a sampling pulse that designates the calculated data positions as data sampling positions; and a sampling circuit for sampling the text data from the binary signal on the basis of the sampling pulse.
    Type: Grant
    Filed: May 1, 2001
    Date of Patent: June 21, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Keiichi Kuzumoto, Toshihiro Matsumura
  • Patent number: 6909847
    Abstract: The present invention provides a camera with a built-in strobe which can reduce its whole size, while having a pop-up mechanism that enables a strobe casing attached to a camera body to be shiftable. The camera is provided with a camera body (2), a support unit (3) which has a first turning section (11) and a second turning section (12) and which is turnably supported on the camera body (2) through the first turning section (11), a strobe casing (4) turnably supported at one side thereof on the support unit (3) through the second turning section (12), a first engaging section (15) for engaging the support unit (3) at a second position, and a second engaging section (16) for engaging the strobe casing (4) at the second position.
    Type: Grant
    Filed: September 23, 2003
    Date of Patent: June 21, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yukikazu Ujikane, Jun Saiki
  • Patent number: 6909413
    Abstract: The present invention provides a liquid crystal display device having a liquid crystal display portion, a gate driver circuit, a source driver circuit, and a power supply circuit, where the liquid crystal display portion includes unit pixels with pixel switching elements and pixel electrodes arranged in a matrix. The pixel switching elements are thin film transistors that are made of polycrystalline silicon semiconductor formed on an insulating substrate. The power supply circuit is a charge pump-type power supply circuit, is made of a polycrystalline silicon semiconductor, and is a built-in circuit integrally formed on an insulating substrate. With such a configuration, a liquid crystal display device that greatly reduces power consumption is realized.
    Type: Grant
    Filed: October 29, 2001
    Date of Patent: June 21, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yutaka Nanno, Kouji Senda, Shin-itsu Takehashi
  • Patent number: 6906452
    Abstract: The present invention provides an electroluminescent display which can efficiently radiate light emitted from an electroluminescent layer to a viewer side and, at the same time, can reduce a deterioration in contrast of a displayed image caused by external light. The electroluminescent display includes a light transparent substrate and an electroluminescent layer provided on the light-transparent substrate. The electroluminescent layer includes at least a transparent electrode, an organic luminescent layer, and a cathode. Two or more regions with different refractive indexes are provided within said light-transparent substrate.
    Type: Grant
    Filed: March 24, 2003
    Date of Patent: June 14, 2005
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventor: Nobuhiko Ichikawa
  • Patent number: 6906913
    Abstract: A solid electrolytic capacitor having excellent electrical characteristics due to an insulating protective layer. A water-shedding silicone rubber that cures by moisture or heat energy is coated to form the insulating protective layer on a protruding portion of a valve metal foil, at a protruding portion on the end surface of a porous valve metal body and on the surface of a dielectric layer covering the protruding portion of the valve metal foil.
    Type: Grant
    Filed: October 17, 2002
    Date of Patent: June 14, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Ayumi Kochi, Seiji Takagi, Yuji Mido, Yasuo Kanemitsu
  • Patent number: 6906275
    Abstract: A movable contact unit including movable contacts localized in respective through holes of a base sheet formed from a flexible insulation substrate; a cover sheet formed from a flexible insulation substrate bonded on upper surface of the base sheet to hold respective movable contacts in the through holes; a weak adhesive layer applied on bottom surface of the base sheet of the movable contact unit except the through holes; and the movable contact unit bonded on stationary contact substrate having corresponding stationary contacts to respective movable contacts using the weak adhesive layer.
    Type: Grant
    Filed: November 13, 2002
    Date of Patent: June 14, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hiromichi Koyama, Koji Sako
  • Patent number: 6906429
    Abstract: A semiconductor device comprises a semiconductor IC chip provided with electrode pads, and an insulating layer formed on a surface of the semiconductor IC chip, on the side of the electrode pads. Connecting terminals on the outer surface of the insulating layer and the electrode pads are connected by conductive posts. The insulating layer is formed of an insulating elastic material, and the conductive posts are formed of a conductive elastic material.
    Type: Grant
    Filed: July 16, 2003
    Date of Patent: June 14, 2005
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventor: Kunihiro Tsubosaki
  • Patent number: 6903497
    Abstract: A thin film piezoelectric element including a first structure having a sequential stack of layers, a first main electrode layer, a first opposed electrode layer and a first piezoelectric thin film having a first polarizing direction located between the first electrode layers, a second structure having as a sequential stack of layers, a second main electrode layer, a second opposed electrode layer and a second piezoelectric thin film having a second polarizing direction located between the second electrode layers, an insulating resin layer covering peripheral portions of the first and second structures, and at least one connecting electrode pad located at a side of one of the first and second structures, for connecting the main electrode layer and the opposed electrode layer of the structures to external equipment, wherein each first and second structures has a cross-sectional shape such that the piezoelectric thin film is tapered, diminishing in width, from a portion near the main electrode layer to a portion
    Type: Grant
    Filed: September 2, 2004
    Date of Patent: June 7, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hirokazu Uchiyama, Yuko Ogawa, Hiroyuki Kita
  • Patent number: 6903781
    Abstract: A video signal processing apparatus comprises a sub-screen processing integrated circuit for subjecting a sub-screen video signal to scale-down processing to reduce its display region and output the sub-screen video signal, and a main-screen processing integrated circuit comprising: a switching circuit for receiving a main-screen video signal and the scaled-down sub-screen video signal which is outputted from the sub-screen processing integrated circuit, and selecting the main-screen video signal for a main-screen display region while selecting the sub-screen video signal for a sub-screen display region; an A/D conversion circuit for converting the video signal outputted from the switching circuit into a digital video signal; a digital signal processing circuit for digitally processing the digital video signal outputted from the A/D conversion circuit; and a D/A conversion circuit for converting the digitally-processed video signal into an analog video signal.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: June 7, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Satoru Tanigawa, Atsuhisa Kageyama, Ryuichi Shibutani
  • Patent number: 6903997
    Abstract: The invention provides an operation verification system that can verify a stable operation at the device mounting, and an adaptive control system that can speed up the arithmetic up to its internal stable operation limit and reduce loads on a control circuit within an internal stable operation range.
    Type: Grant
    Filed: November 20, 2002
    Date of Patent: June 7, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Nobuhiro Mimura