Patents Represented by Attorney, Agent or Law Firm Milton Oliver
  • Patent number: 5627322
    Abstract: The invention relates to a measurement sensor for a vortex flowmeter having a damming member, a scanning element disposed downstream of the damming member, and an electromechanical transducer associated with the scanning element and embedded therein, wherein a deformable compensating layer is provided at least in portions between the electromechanical transducer and the scanning element.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: May 6, 1997
    Assignee: Bopp & Reuther Messtechnik GmbH
    Inventor: Ingo Osterloh
  • Patent number: 5623278
    Abstract: In a drive circuit for a display apparatus into which a digital video signal is input and in which a plurality of parallel signal electrodes are provided, one of signal voltages having different levels is output in accordance with the digital video signal, or two adjacent ones of said signal voltages are simultaneously output. Alternatively, one of the signal voltages is supplied to a signal electrode in one portion of one output period, and another one of the signal voltages is supplied to the signal electrode in another portion of the output period. The length ratio of the two portions of one output period is appropriately determined according to a digital video signal, whereby an arbitrary voltage corresponding to the video signal data can be applied to the pixel.
    Type: Grant
    Filed: April 5, 1995
    Date of Patent: April 22, 1997
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hisao Okada, Shigeyuki Uehira, Katumi Miki, Kuniaki Tanaka, Toshihiro Yanagi
  • Patent number: 5623329
    Abstract: An image forming apparatus of the present invention includes a photoreceptor drum on which a toner image is formed, a transfer drum for transferring the toner image to paper by bringing the paper into contact with the photoreceptor drum, the transfer drum having a dielectric layer, a semi-conductive layer and a conductive layer laminated in this order from the paper side, a power source which is connected to the conductive layer so as to apply a predetermined voltage to the conductive layer, and a conductive roller for pressing the paper against a surface of the dielectric layer so as to produce a potential difference between the conductive layer and the paper. The potential difference induces charges of the same polarity as the voltage applied to the conductive layer on the surface of the dielectric layer, and charges of the opposite polarity on a back surface of the paper pressed against the surface of the dielectric layer.
    Type: Grant
    Filed: February 3, 1995
    Date of Patent: April 22, 1997
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kouichi Yamauchi, Hiroshi Tachiki, Hiromu Yoshimoto, Atsuyuki Katoh, Yuhi Akagawa, Takayuki Ohno, Yoshinobu Tateishi, Keizo Fukunaga, Mitsuyoshi Terada, Fumio Shimazu, Takuya Abe, Kiyoshi Toizumi
  • Patent number: 5621706
    Abstract: The disclosure describes a magneto-optical recording medium comprising a substrate and a magnetic layer comprising at least a readout layer, a cut-off layer and a memory layer disposed on said substrate in order,said magnetic layer having the properties that when said magnetic layer is heated by irradiation of readout beams for readout of information, a sub-lattice magnetization direction of at least the layer concerned with readout in said magnetic layer at the high-temperature region is reversed relative to the magnetization direction at the low temperature of said region, andwhen the temperature of the magnetic layer lowers after passage of the readout beams, the sub-lattice magnetization direction is restored; and a recording and readout method of the magneto-optical recording medium.
    Type: Grant
    Filed: November 21, 1994
    Date of Patent: April 15, 1997
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Toshifumi Kawano, Hidetaka Ito
  • Patent number: 5621461
    Abstract: A solid state image device including: a plurality of photoelectric converting elements arranged in a matrix pattern along a first and a second direction in a semiconductor substrate; a plurality of electric charge transfer regions for receiving electric charges from the photoelectric converting elements and for transferring the electric charges toward the first direction, the electric charge transfer regions being provided adjacent to the plurality of photoelectric converting elements in the semiconductor substrate and extending along the first direction; and a plurality of gate electrodes for applying a voltage to the electric charge transfer regions to transfer the electric charge from the photoelectric converting elements to the electric charge transfer regions, and to transfer the electric charges toward the first direction, each of the gate electrodes having a plurality of transfer electrode portions provided over the electric charge transfer regions and a plurality of clip electrode portions electricall
    Type: Grant
    Filed: September 1, 1995
    Date of Patent: April 15, 1997
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Hiroshi Higashide
  • Patent number: 5619358
    Abstract: It is an object of the invention to prevent electrolytic corrosion occurring in the dummy electrodes from propagating into the display electrodes. In the liquid crystal display device, signal electrodes or scanning electrodes and dummy electrodes are formed on the surfaces of a pair of substrates, and a pair of substrate members in which an orientation film is formed on one side so as to cover the electrodes are pasted together at the circumferences through a sealing member so that the surfaces of the pair of substrates may confront each other and a space enclosed by the substrate members and the sealing member is filled with liquid crystal to form a liquid crystal layer. The dummy electrodes composed of first and second conductive films are formed separately, and the first conductive film is present in the region overlapped with the sealing member and the sealed space, and does not contact with the atmosphere.
    Type: Grant
    Filed: November 13, 1995
    Date of Patent: April 8, 1997
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shozo Tanaka, Kazuya Yoshimura
  • Patent number: 5619312
    Abstract: A developing device incorporating a developer supply unit and a developer discharge section, in which a supply developer including a mixture of toner and carrier is successively supplied to a developer container from the developer supply unit and a deteriorated developer in the developer container is discharged through the developer discharge section. The developer supply unit has a sponge roller for selectively attracting toner to a surface thereof, a magnet roller for selectively attracting carrier to a surface thereof, and a member for scraping and bringing the toner and carrier attracted to these rollers into the developer container. The developer including toner and carrier in a predetermined ratio is thus stably supplied to the developer container. In another example of the developer supply unit, agitating of the developer is performed while shovelling the developer deposited in a lower part of the unit by a transport screw.
    Type: Grant
    Filed: November 8, 1994
    Date of Patent: April 8, 1997
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shintarou Hatano, Hiroshi Kawahito, Yoshiki Ichikawa, Fumito Mizoguti, Masahiro Tsuji, Takao Hiroyasu, Hiroshi Kawamoto, Syouichi Fujita, Hideyuki Nishimura, Itaru Kawabata, Yuichi Kazaki
  • Patent number: 5615180
    Abstract: A magneto-optical disk is provided with a recording layer that exhibits perpendicular magnetization, an intermediate layer wherein in-plane magnetization occurs at room temperature and a transition from the in-plane magnetization to perpendicular magnetization occurs as the temperature thereof rises, and an auxiliary layer that is made of a rare-earth-transition-metal alloy and that exhibits perpendicular magnetization, and these layers are laminated in this order. The composition of the rare-earth-transition-metal alloy is set so that the magnetic moment of the rare-earth metal is relatively greater than that of the transition metal at room temperature and the compensation temperature is located between room temperature and the Curie temperature T.sub.c3. A magneto-optical recording apparatus for rewriting information on the magneto-optical disk is provided with a single magnet for applying H.sub.w onto a portion on the magneto-optical disk irradiated by a light beam, as well as for applying H.sub.
    Type: Grant
    Filed: February 18, 1994
    Date of Patent: March 25, 1997
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Michinobu Mieda, Junichiro Nakayama, Hiroyuki Katayama, Akira Takahashi, Kenji Ohta
  • Patent number: 5612803
    Abstract: The present invention provides a liquid crystal display device including a pair of electrode substrates and a display medium sandwiched between the electrode substrates and including a polymeric wall and liquid crystal regions at least partly surrounded by the polymeric wall. In this liquid crystal display device, the polymeric wall is tightly attached to both the electrode substrates. Furthermore, the invention also provides a method for producing a liquid crystal display device including a pair of electrode substrates, at least one of which is transparent, and a display medium including a polymeric wall and liquid crystal regions at least partly surrounded by the polymeric wall and sandwiched between the electrode substrates.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: March 18, 1997
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Nobuaki Yamada, Masahiko Kondo, Masayuki Okamoto, Shuichi Kozaki
  • Patent number: 5610908
    Abstract: A frequency-division multiplexer for carrying an OFDM signal on a large number of closely-spaced carriers receives the digital data at an input (12), applies coding such as convolutional coding (14), time interleaves (16) the signals, and assembles them frame-by-frame in a matrix (18). The data are converted to parallel form by a shift register (18), frequency interleaved (24), differentially encoded (26), and quadrature-phase-modulated (28) on several hundred or more closely-spaced carriers. A first inverse Fast Fourier Transform (FFT) circuit (30) transforms this information from the frequency domain into the time domain. Instead of being transmitted directly, the resultant signals are then amplitude-limited (42) and applied to an FFT (44) to reconvert them into the frequency domain. The phases of the wanted signals are then re-set, and the amplitudes of the signals near the edges of the band are reduced, in correction circuits (46).
    Type: Grant
    Filed: July 28, 1995
    Date of Patent: March 11, 1997
    Assignee: British Broadcasting Corporation
    Inventors: Peter Shelswell, Mark Charles D. Maddocks
  • Patent number: 5608558
    Abstract: According to the present invention, a defect detection method for at least one of an active matrix substrate and an active matrix liquid crystal panel is provided. The active matrix substrate includes: an insulating substrate; a plurality of pixel electrodes arranged in a matrix fashion on the substrate; switching elements for driving the plurality of pixel electrodes; and scanning lines and signal lines which are respectively connected to the switching elements and are formed so as to be crossed with each other, while the active matrix liquid crystal panel includes: the active matrix substrate; a counter substrate provided with counter electrodes thereon and disposed so as to be opposed to the active matrix substrate; and a liquid crystal layer interposed between the active matrix substrate and the counter substrate.
    Type: Grant
    Filed: April 18, 1995
    Date of Patent: March 4, 1997
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Irie Katsumi
  • Patent number: 5608559
    Abstract: A display board has wirings on a surface thereof for transmitting a signal received from outside at a peripheral portion of the display board to a display area of the display board. Each wiring has a first conductive film formed of a first material and disposed on the surface of the display board, a second conductive film which is formed of a second material satisfying a condition that a surface of the second conductive film is less prone to oxidation than a surface of the first conductive film and which is disposed on a part of the first conductive film, and a transparent conductive film which is an oxide film and which is disposed on at least the second conductive film. Those first conductive film, second conductive film and transparent film constitute a three-layered structure portion of the wiring.
    Type: Grant
    Filed: December 6, 1994
    Date of Patent: March 4, 1997
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kiyoshi Inada, Motoji Shiota, Hirokazu Yoshida, Yasunobu Tagusa
  • Patent number: 5606402
    Abstract: In an image forming apparatus, flying of toner from a toner holder towards a counter electrode is controlled by giving a potential to a control grid according to an image signal. Here, a distance between the control grid and the toner holder is set so as to be shorter than a pitch of a gate. The toner passes through a plurality of gates which is a passing section of the toner in the control grid and adheres to a sheet so as to form an image on the sheet. Furthermore, in the image forming apparatus, image signals to be inputted serially from an image reading unit are distributed to odd lines and even lines so as to respectively stored into the odd memory and the even memory. The image signals are stored into the odd memory and at the same time the image signals stored in the even memory are read out.
    Type: Grant
    Filed: December 16, 1994
    Date of Patent: February 25, 1997
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hirokazu Fujita, Naoki Irisa
  • Patent number: 5602659
    Abstract: A photoconductor coupled liquid crystal light valve comprising at least a pair of transparent electrode, a liquid crystal layer and a photoconductive layer showing blocking properties both sandwiched between said transparent electrodes, wherein said photoconductive layer includes a light absorbing layer and a blocking layer having a band gap wider than said light absorbing layer, both said light absorbing layer and said blocking layer being formed of non-alloy a-Si; and a method for manufacturing said photoconductor coupled light valve wherein said photoconductive layer is prepared with electron cyclotron resonance method.
    Type: Grant
    Filed: February 2, 1995
    Date of Patent: February 11, 1997
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Katsumi Adachi, Takashi Hayakawa, Shiro Narikawa
  • Patent number: 5595805
    Abstract: A magneto-optical medium has a substrate through which a light beam is transmitted and a recording-reproduction layer. The recording-reproduction layer, which exhibits an in-plane magnetization characteristic at the first temperature while still containing magnetization components in the perpendicular direction corresponding to information, comes to exhibit a perpendicular magnetization characteristic above the second temperature higher than the first temperature. In this magneto-optical recording medium, information is reproduced by utilizing a temperature distribution of the recording-reproduction layer being subjected to irradiation of a light beam and by raising the temperature of a portion within a light spot of the light beam from the first temperature to the second temperature.
    Type: Grant
    Filed: October 5, 1994
    Date of Patent: January 21, 1997
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Junichiro Nakayama, Junsaku Nakajima, Akira Takahashi, Kenji Ohta
  • Patent number: 5593910
    Abstract: A charge detection device for converting a signal charge consisting of carriers of a first polarity externally provided into a voltage signal, the charge detection device comprising a MOS transistor, the MOS transistor including: a first semiconductor layer having a transistor channel for carriers of a second polarity; an insulating layer provided on the first semiconductor layer; and a gate electrode provided on the insulating layer, wherein transistor characteristics of the MOS transistor are changed by the signal charge accumulated in a surface region the first semiconductor layer immediately below in interface between the first semiconductor layer and the insulating layer, thereby detecting a quantity of the signal charge.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: January 14, 1997
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Takashi Watanabe
  • Patent number: 5592219
    Abstract: A method of reading out signals for a solid-state imaging device is disclosed. In this method, the timing of a final gate transfer clock signal .phi..sub.H1 ' and the timing of a reset pulse signal .phi..sub.R are both synchronized with two clock cycles of a horizontal CCD clock signals .phi..sub.H1 and .phi..sub.H2, to combine signal charges from two horizontally adjacent pixel pairs. Accordingly, the sensitivity under a low light intensity can be enhanced in a simple and inexpensive way without modifying the structure of the solid-state imaging device or adding an external device.
    Type: Grant
    Filed: May 11, 1995
    Date of Patent: January 7, 1997
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Tadashi Nakagawa
  • Patent number: 5590235
    Abstract: An electric motor (10) particularly a low-voltage collectorless dc motor, has a microprocessor (18, 40) with a reset input (24). Further, it has a device (26) which, during the running of the motor, generates signals (R) which depend upon the rotational position of the rotor (14) of the motor (30). These signals are applied to the reset input (24) and have the effect that the microprocessor is reset to predefined starting states or conditions, at times controlled by the turning of the rotor (14).
    Type: Grant
    Filed: November 22, 1994
    Date of Patent: December 31, 1996
    Assignee: Papst-Motoren GmbH & Co. KG
    Inventors: Hermann Rappenecker, Frank Jeske
  • Patent number: 5586228
    Abstract: A digital image forming apparatus wherein at least when an occurrence of trouble that required automatic switching of the power witch to the OFF position during operation of the image output operation when it is detected by a trouble detector, the image data inputted for an image output operation is stored in an internal memory which ensures the memory content even with the power switch switched to the OFF position. After the trouble is settled, the image output operation is continued with respect to the image data stored in the internal memory by the image output unit. As a result, an idle operation for reinputting the image data to be outputted through visualization by, for example, a reading operation of the document image can be eliminated.
    Type: Grant
    Filed: December 2, 1994
    Date of Patent: December 17, 1996
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masato Tokishige, Toshihiro Okahashi, Akira Tamagaki
  • Patent number: 5585159
    Abstract: A recording medium includes a transparent substrate and a recording layer formed thereon for recording information, and a component made of material with a large loss factor, such as butyl rubber, bond magnet, etc. By suppressing recording medium vibration resonance from a recording and reproducing device, an improved frequency characteristic of a linear motor can be achieved, thereby enabling high access speed. Preferably, the large-loss material also provides a directional magnetic field which facilitates magneto-optical rewriting on the recording layer.
    Type: Grant
    Filed: May 26, 1993
    Date of Patent: December 17, 1996
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Tomoyuki Miyake, Toshiyuki Tanaka