Patents by Inventor Tadayoshi UMETSU

Tadayoshi UMETSU 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).

  • Multiple anode matrix vacuum fluorescent display, and driving circuit and driving method thereof
    Patent number: 8994616
    Abstract: In a Q-tuple anode matrix vacuum fluorescent display (VFD), a plurality of selected pixels are turned on one by one to sequentially emit lights in accordance with a display signal. Each selected pixel is selected from Q anode segments to be turned on to emit lights by turning on a first and a second grid electrode positioned adjacent to each other. Each selected pixel is formed of Q/2 anode segments in total including R anode segments sequentially disposed from a position closest to the first grid electrode and facing the second grid electrode and (Q/2?R) anode segments sequentially disposed from a position closest to the second grid electrode and facing the first grid electrode, R being an integer ranging from 1 to (Q/2?1).
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: March 31, 2015
    Assignee: Futaba Corporation
    Inventors: Tadayoshi Umetsu, Toshihiro Nishioka, Takashi Muguruma, Katsumi Takayama
  • FLUORESCENT DISPLAY, AND DRIVING CIRCUIT AND DRIVING METHOD THEREOF
    Publication number: 20120249494
    Abstract: In a Q-tuple anode matrix vacuum fluorescent display (VFD), a plurality of selected pixels are turned on one by one to sequentially emit lights in accordance with a display signal. Each selected pixel is selected from Q anode segments to be turned on to emit lights by turning on a first and a second grid electrode positioned adjacent to each other. Each selected pixel is formed of Q/2 anode segments in total including R anode segments sequentially disposed from a position closest to the first grid electrode and facing the second grid electrode and (Q/2?R) anode segments sequentially disposed from a position closest to the second grid electrode and facing the first grid electrode, R being an integer ranging from 1 to (Q/2?1).
    Type: Application
    Filed: March 27, 2012
    Publication date: October 4, 2012
    Applicant: Futaba Corporation
    Inventors: Tadayoshi UMETSU, Toshihiro Nishioka, Takashi Muguruma, Katsumi Takayama