Patents by Inventor Hiroki Kai

Hiroki Kai 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: 20140368148
    Abstract: A lock detecting circuit includes: a CPU 204; switches 220 to 224 controlled by control signals FAN1 to FANn output from the CPU and supplying electric power to motors 210 to 214; gates 240 to 244 controlled by the control signals and selectively outputting, as signals XLD1 to XLDn, input motor state signals LD1 to LDn; and an element 232 outputting, as a signal LOCK, a result of logical sum of the signals XLD1 to XLDn. If the signal LOCK indicates a locked state, the CPU sets any one of the control signals to a high level and, in this state, determines the level of signal LOCK, to determine whether each motor is locked. Thus, a locked motor can be identified.
    Type: Application
    Filed: January 25, 2013
    Publication date: December 18, 2014
    Applicant: SHARP KABUSHIKI KAISHA
    Inventor: Hiroki Kai
  • Publication number: 20050219601
    Abstract: A relay apparatus (relay unit) is provided between a PC, from which image data is transmitted, and an image recording apparatus (image recording unit). The relay apparatus executes a process for correcting a color on the image data transmitted from the PC to the image recording apparatus. In addition, a storage unit of the relay apparatus stores unique information of the image recording apparatus, such as a production number. The relay apparatus executes processes for correcting the image data and for adding the unique information to the image data transmitted from the PC, and then transmits the processed image data to the image recording apparatus. Thus, realized is an image recording system and the relay apparatus, in which it is not necessary to provide a circuit which executes a process for embedding unique information in the image data in the image recording apparatus, so that deterioration in quality of the image caused by the unique information can be prevented as much as possible.
    Type: Application
    Filed: December 1, 2004
    Publication date: October 6, 2005
    Inventors: Akira Tamagaki, Akihiko Taniguchi, Junichi Kajiwara, Takao Horiuchi, Yoshiomi Hamano, Kiyoshi Inoue, Hiroki Kai, Koichi Sumida, Yohichi Shimazawa
  • Patent number: 6934141
    Abstract: A power supply device 3 including: a current source 31 for supplying current to a load circuit 4 which operates on the supplied current, and a power switch unit 32 between the current source 31 and the load circuit 4 to control passage of current, wherein: the power switch unit 32 includes a switching element 323 connected in parallel with the open-close element 321, a power supply controller 33 including an open-close element controller 31 which controls operation of the open-close element 321 and a switching element controller 332 which controls operation of the switching element 323, and a voltage detector 34 which detects terminal voltage of the load circuit 4; and the power switch unit 32 turns on the switching element before supplying current to the load circuit and closes the open-close element when the terminal voltage of the load circuit becomes almost equal to supply voltage.
    Type: Grant
    Filed: April 24, 2003
    Date of Patent: August 23, 2005
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yoshiomi Hamano, Kiyoshi Inoue, Junichi Kajiwara, Takao Horiuchi, Koichi Sumida, Akira Tamagaki, Akihiko Taniguchi, Hiroki Kai
  • Publication number: 20030202296
    Abstract: A power supply device 3 including: a current source 31 for supplying current to a load circuit 4 which operates on the supplied current, and a power switch unit 32 between the current source 31 and the load circuit 4 to control passage of current, wherein: the power switch unit 32 includes a switching element 323 connected in parallel with the open-close element 321, a power supply controller 33 including an open-close element controller 31 which controls operation of the open-close element 321 and a switching element controller 332 which controls operation of the switching element 323, and a voltage detector 34 which detects terminal voltage of the load circuit 4; and the power switch unit 32 turns on the switching element before supplying current to the load circuit and closes the open-close element when the terminal voltage of the load circuit becomes almost equal to supply voltage.
    Type: Application
    Filed: April 24, 2003
    Publication date: October 30, 2003
    Inventors: Yoshiomi Hamano, Kiyoshi Inoue, Junichi Kajiwara, Takao Horiuchi, Koichi Sumida, Akira Tamagaki, Akihiko Taniguchi, Hiroki Kai