Patents Represented by Attorney Mark C. Pickering
  • Patent number: 6211032
    Abstract: A method for forming a thin-film resistor, which is composed of silicon, carbon, and chromium, is disclosed. The resistivity of the thin-film resistor, and therefore the resistance and temperature coefficient of resistance (TCR) of the resistor, are tailored to have specific values by varying the elemental composition of the silicon, carbon, and chromium used to form the resistor.
    Type: Grant
    Filed: November 6, 1998
    Date of Patent: April 3, 2001
    Assignee: National Semiconductor Corporation
    Inventors: Mark Redford, Yakub Aliyu, Chic McGregor, Rikki Boyle, Haydn Gregory
  • Patent number: 5357498
    Abstract: A recording and/or reproducing apparatus is disclosed in which informational signals are recorded and/or reproduced by irradiating an optical disc 202 with a light beam from an optical pick-up device 1 through an recording and/or reproducing opening 205 which is formed in a disc cartridge 202 which rotatably houses an optical disc 203. The optical pick-up device 1 which is used for the recording and/or reproducing apparatus comprises a light source and an objective lens 5 for converging the light beam from the light source upon the signal recording area of the optical disc 203. When recording and/or reproducing of informational signal on and/or from the optical disc 203 is performed by the optical pick-up device 1, only the objective lens 5 is moved into the disc cartridge 202 via the recording and/or reproducing opening 205 formed on the disc cartridge 202 to shorten the distance between the objective lens 5 of the optical pick-up device 1 and the disc 203.
    Type: Grant
    Filed: September 14, 1992
    Date of Patent: October 18, 1994
    Assignee: Sony Corporation
    Inventors: Tadao Yoshida, Hirotoshi Fujisawa
  • Patent number: 5331423
    Abstract: A disc player reproduces information recorded on a disc which has a disc type. Type identification circuitry determines the disc type of the disc. Reproduction circuitry reproduces the information stored on the disc. Disc ejection circuitry generates a disc ejecting signal when an externally-generated command is received. Control circuitry stops the reproduction circuitry in response to the disc ejecting signal. Reset circuitry initializes the disc reproduction circuitry when the disc ejecting signal is asserted and the type identification circuitry determines that the disc type is a first predetermined type, and inhibits the initialization of the disc reproduction circuitry when the disc ejecting signal is asserted and the type identification circuitry determines that the disc type is a second predetermined type. The disc type determined by the type identification circuitry can be stored in a memory.
    Type: Grant
    Filed: September 24, 1992
    Date of Patent: July 19, 1994
    Assignee: Sony Corporation
    Inventors: Kiyoshi Ota, Kousuke Misono, Toshiyuki Ishii