Patents by Inventor Hayato TERASHI

Hayato TERASHI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Oscillation circuit, oscillator, fractional N-PLL circuit, electronic apparatus, moving object, and determination method of reference frequency of fractional N-PLL circuit
    Patent number: 9628096
    Abstract: In order to configure an oscillation circuit, an oscillator, a fractional N-PLL circuit, and the like that can output a plurality of frequencies, while decreasing an influence of an integer value boundary spurious at one reference frequency, the oscillation circuit includes a circuit for oscillation that oscillates a resonator, a fractional N-PLL circuit to which a signal from the circuit for oscillation is input, and a non-volatile memory that stores a plurality of division ratios, which can be selected from outside, of the fractional N-PLL circuit. A fractional portion of at least two of the plurality of division ratios is equal to or higher than 0.05 and is equal to or lower than 0.95.
    Type: Grant
    Filed: January 28, 2015
    Date of Patent: April 18, 2017
    Assignee: Seiko Epson Corporation
    Inventors: Yuichi Toriumi, Hayato Terashi, Mitsuaki Sawada, Hisahiro Ito, Yasunari Furuya
  • OSCILLATION CIRCUIT, OSCILLATOR, FRACTIONAL N-PLL CIRCUIT, ELECTRONIC APPARATUS, MOVING OBJECT, AND DETERMINATION METHOD OF REFERENCE FREQUENCY OF FRACTIONAL N-PLL CIRCUIT
    Publication number: 20150214961
    Abstract: In order to configure an oscillation circuit, an oscillator, a fractional N-PLL circuit, and the like that can output a plurality of frequencies, while decreasing an influence of an integer value boundary spurious at one reference frequency, the oscillation circuit includes a circuit for oscillation that oscillates a resonator, a fractional N-PLL circuit to which a signal from the circuit for oscillation is input, and a non-volatile memory that stores a plurality of division ratios, which can be selected from outside, of the fractional N-PLL circuit. A fractional portion of at least two of the plurality of division ratios is equal to or higher than 0.05 and is equal to or lower than 0.95.
    Type: Application
    Filed: January 28, 2015
    Publication date: July 30, 2015
    Inventors: Yuichi TORIUMI, Hayato TERASHI, Mitsuaki SAWADA, Hisahiro ITO, Yasunari FURUYA