Patents by Inventor Koji Sakacho

Koji Sakacho 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).

  • Read-write processing apparatus and method for RFID tag
    Patent number: 7421249
    Abstract: A read-write processing apparatus communicates with an RFID tag provided with a semiconductor memory to exchange commands and responses through antenna coils. A condition under which only a carrier wave is transmitted is set prior to a communication with the RFID tag and a level from a reception signal obtained under this condition is extracted as noise level. The extracted noise level is displayed or outputted to an output host apparatus.
    Type: Grant
    Filed: January 21, 2005
    Date of Patent: September 2, 2008
    Assignee: OMRON Corporation
    Inventors: Tomonori Ariyoshi, Koyo Ozaki, Koji Sakacho
  • Read-write processing apparatus and method for RFID tag
    Publication number: 20050170784
    Abstract: A read-write processing apparatus communicates with an RFID tag provided with a semiconductor memory to exchange commands and responses through antenna coils. A condition under which only a carrier wave is transmitted is set prior to a communication with the RFID tag and a level from a reception signal obtained under this condition is extracted as noise level. The extracted noise level is displayed or outputted to an output host apparatus.
    Type: Application
    Filed: January 21, 2005
    Publication date: August 4, 2005
    Inventors: Tomonori Ariyoshi, Koyo Ozaki, Koji Sakacho
  • Method of and device for reading optical data code
    Patent number: 6918539
    Abstract: A two-dimensional code reader repeats a cycle of ordinary code-reading processes such as taking an image of an optical data code, extracting a two-dimensional code from the image and decoding optical data of the two-dimensional code in the image. A specified evaluation value for the optical data code is obtained from the results of processes carried out prior to the decoding step and stored if the decoding is done successfully. Data which show the changes in the evaluation value with time are displayed. The evaluation value may be compared with a specified warning level and a warning output is made, depending on the result of the comparison.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: July 19, 2005
    Assignee: Omron Corporation
    Inventors: Katsuki Nakajima, Koji Sakacho, Takuya Murata
  • Method of and device for reading optical data code
    Publication number: 20040026508
    Abstract: A two-dimensional code reader repeats a cycle of ordinary code-reading processes such as taking an image of an optical data code, extracting a two-dimensional code from the image and decoding optical data of the two-dimensional code in the image. A specified evaluation value for the optical data code is obtained from the results of processes carried out prior to the decoding step and stored if the decoding is done successfully. Data which show the changes in the evaluation value with time are displayed. The evaluation value may be compared with a specified warning level and a warning output is made, depending on the result of the comparison.
    Type: Application
    Filed: June 16, 2003
    Publication date: February 12, 2004
    Inventors: Katsuki Nakajima, Koji Sakacho, Takuya Murata