Patents by Inventor Tatsuya Inenaga

Tatsuya Inenaga 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).

  • Multi-output type DC/DC converter with a constant on time interval in a steady state
    Patent number: 7378823
    Abstract: In a multi-output type DC/DC converter, a controller controls, in accordance with first and second output voltages, turning on/off of a switch circuit and selection in an output selection circuit. The controller controls an ON time interval in each time slot of the switch circuit so as to always constant in a steady state without reference to weight of first and second loads.
    Type: Grant
    Filed: December 28, 2005
    Date of Patent: May 27, 2008
    Assignee: Mitsumi Electric Co., Ltd.
    Inventors: Yuji Yamanaka, Keizo Kumagai, Tatsuya Inenaga, Takeshi Satou
  • Multi-output type DC/DC converter with a constant on time interval in a steady state
    Publication number: 20060221649
    Abstract: In a multi-output type DC/DC converter, a controller controls, in accordance with first and second output voltages, turning on/off of a switch circuit and selection in an output selection circuit. The controller controls an ON time interval in each time slot of the switch circuit so as to always constant in a steady state without reference to weight of first and second loads.
    Type: Application
    Filed: December 28, 2005
    Publication date: October 5, 2006
    Applicant: Mitsumi Electric Co. Ltd.
    Inventors: Yuji Yamanaka, Keizo Kumagai, Tatsuya Inenaga, Takeshi Satou
  • Multi-output type DC/DC converter operable at a current discontinuous mode or a current continuous mode
    Publication number: 20060220622
    Abstract: In a multi-output type DC/DC converter, a controller controls, in accordance with first and second output voltages, turning on/off of a switch circuit and selection in an output selection circuit. The controller makes the multi-output type DC/DC converter operate at a current discontinuous mode when all of the first and the second loads are light. The controller makes the multi-output type DC/DC converter operate at a current continuous mode when all of the first and the second loads are heavy.
    Type: Application
    Filed: December 28, 2005
    Publication date: October 5, 2006
    Applicant: Mitsumi Electric Co. Ltd.
    Inventors: Yuji Yamanaka, Keizo Kumagai, Tatsuya Inenaga, Takeshi Satou
  • Converting unit and USB-adapted peripheral apparatus
    Publication number: 20010003197
    Abstract: Connected to a CD-RW drive (30) having an IDE apparatus interface (31), a speech apparatus output terminal (32), and a power supply apparatus input terminal (33), a converting unit (20) has an IDE unit interface (21), a speech unit input terminal (22), a power supply unit output terminal (23), a USB unit interface (24), a speech unit output terminal (25), and a power supply unit input terminal (26). The converting unit (20) comprises an IDE/USB converting circuit (27) connected between the IDE unit interface 21 and the USB unit interface (24). The IDE/USB converting circuit (27) carries out an interface conversion between an IDE interface and a USB interface. The converting unit (20) further comprises a noise filter (28) connected between the power supply unit input terminal (26) and the power supply unit output terminal (23). The speech unit input terminal (22) is directly connected to the speech unit output terminal (25).
    Type: Application
    Filed: November 30, 2000
    Publication date: June 7, 2001
    Inventors: Jun Matsushima, Tatsuya Inenaga