Patents by Inventor Tomoki Koikawa

Tomoki Koikawa 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).

  • Automatic adjustment of illumination for reading barcodes and similar items
    Patent number: 7025270
    Abstract: A barcode or similar scanning device is adjusted and calibrated by utilizing test pulses and measuring the peaks and calculating average of reflected light. The duty cycle of the pulses is adjusted based upon the measurements taken, in order to insure that the amount of reflected light is within the appropriate range associated with the charge coupling device or similar device collecting the reflective light.
    Type: Grant
    Filed: August 18, 2004
    Date of Patent: April 11, 2006
    Assignee: Optoelectronics Co., Ltd.
    Inventors: Yoshinori Tangezaka, Tomoki Koikawa
  • Automatic adjustment of illumination for reading barcodes and similar items
    Publication number: 20060038016
    Abstract: A barcode or similar scanning device is adjusted and calibrated by utilizing test pulses and measuring the peaks and calculating average of reflected light. The duty cycle of the pulses is adjusted based upon the measurements taken, in order to insure that the amount of reflected light is within the appropriate range associated with the charge coupling device or similar device collecting the reflective light.
    Type: Application
    Filed: August 18, 2004
    Publication date: February 23, 2006
    Inventors: Yoshinori Tangezaka, Tomoki Koikawa