Patents by Inventor Hayato FUJITA

Hayato FUJITA 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).

  • Publication number: 20120189328
    Abstract: Apparatus that forms an image according to image information includes density sensors that detect image density variations in main and sub-scanning directions. A processing device generates correction data for correcting a light source output to suppress the density variations based on detection results. The processing device modifies the correction data such that the light source output after the correction is at least a minimum rated output at a position at which the output after the correction is lower than the minimum rated output, in the relation between a position on the surface of the photosensitive element in the main-scanning direction and the output after the correction, and modifies the correction data such that the light source output after the correction is at most a maximum rated output at a position at which the output after the correction is higher than the maximum rated output.
    Type: Application
    Filed: January 20, 2012
    Publication date: July 26, 2012
    Inventors: Seizo Suzuki, Masaaki Ishida, Atsufumi Omori, Kazuhiro Akatsu, Muneaki Iwata, Hayato Fujita
  • Publication number: 20110268454
    Abstract: An LD driver to generate an asymmetrical driving current with a relatively faster falling edge and an optical transmitter having the LD driver are disclosed. The LD driver includes a primary driver and the sub-driver connected in parallel to the primary driver. The primary driver converts the input signal or the delayed signal delayed from the input signal into the primary current. The sub-driver generates a symmetrical current tracing the input or the delayed signal, and an asymmetrical current formed by the OR operation between the input and delayed signals. The driving current is formed by adding the primary current, the symmetrical current and the asymmetrical current.
    Type: Application
    Filed: May 24, 2011
    Publication date: November 3, 2011
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventor: Hayato FUJITA