Patents by Inventor Tsuyoshi Honma

Tsuyoshi Honma 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).

  • Semiconductor memory device having data protection feature
    Patent number: 5991197
    Abstract: A reset power down mode designating signal and first and second write protect signals are provided to a control circuit. According to the states of these external control signals, the status of unconditional inhibition, unconditional permission, and lock bit (LB) dependency for the protect status of data rewrite is set for each memory block group of a memory array. Therefore, the write protect status can be set in a flexible manner for a nonvolatile semiconductor memory device.
    Type: Grant
    Filed: March 24, 1998
    Date of Patent: November 23, 1999
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Taku Ogura, Atsushi Ohba, Tsuyoshi Honma, Kazuo Kobayashi
  • Variable magnification image
    Patent number: 5101282
    Abstract: An image processing apparatus includes a scanning system for reading a document image, and a scanning system driving unit for relatively moving and scanning the document image and the scanning system. The scanning system is driven in accordance with input drive pulses. The apparatus also includes a control unit for changing the number of drive pulses to be supplied to the scanning system in accordance with an input variable magnification. The scanning system has a CCD for converting the document image into an electric signal.
    Type: Grant
    Filed: March 7, 1990
    Date of Patent: March 31, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tsuyoshi Honma