Patents Examined by Frances M Legasse, Jr.
  • Patent number: 9124834
    Abstract: A solid-state image sensing device according to the invention which can reduce an instantaneous current occurring in transferring image digital signals from analog-digital converters to registers to reduce noise sneaking into the analog-digital converters and a pixel array includes a pixel array, a vertical scanning circuit, a plurality of column ADCs, a plurality of registers, and control signal generation units. The control signal generation units are provided for respective groups into which the column ADCs and the registers disposed on one side of the pixel array are divided, and generate control signals of different timings, for respective units including at least one group, of transfer of converted image digital signals to the registers from the column ADCs operating in parallel.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: September 1, 2015
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Shunsuke Okura, Mitsuo Magane
  • Patent number: 8227741
    Abstract: An object is to provide a photoelectric conversion device which can correct a difference between a measured light intensity and an actual light intensity, which occurs when output current decreases due to the fact that a strong light is received, and outputs the corrected current. The photoelectric conversion device includes a photoelectric conversion element; a photocurrent output circuit for providing a first current corresponding to the amount of incident light on the photoelectric conversion element; a photocurrent correcting circuit which includes a corrective photoelectric conversion element for providing a second current, the corrective photoelectric conversion element including a light shield film for blocking part of light; a photocurrent adder circuit which includes a circuit for providing a fourth current; and an amplifier circuit including a circuit which amplifies a current corresponding to the sum of the first current and the fourth current and outputs the amplified current.
    Type: Grant
    Filed: November 9, 2009
    Date of Patent: July 24, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Jun Koyama, Hideaki Shishido