Patents by Inventor Mitsuji Okada

Mitsuji Okada 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).

  • Patent number: 9846831
    Abstract: A memory card includes a memory that stores data, a driver that transmits the data received from the memory, and at least one transmitter that transmits the data received from the driver to a receiver provided in an external main unit. The driver and the transmitter are provided in a single IC (Integrated Circuit) chip and are not overlapped with each other in planar view, and the transmitter includes a coil.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: December 19, 2017
    Assignee: Renesas Electronics Corporation
    Inventors: Yasutaka Nakashiba, Hiroaki Ohkubo, Mitsuji Okada, Shigeharu Nakata, Shuuichi Kagawa
  • Publication number: 20160203394
    Abstract: A memory card includes a memory that stores data, a driver that transmits the data received from the memory, and at least one transmitter that transmits the data received from the driver to a receiver provided in an external main unit.
    Type: Application
    Filed: March 24, 2016
    Publication date: July 14, 2016
    Inventors: Yasutaka Nakashiba, Hiroaki Ohkubo, Mitsuji Okada, Shigeharu Nakata, Shuuichi Kagawa
  • Patent number: 9305253
    Abstract: A memory card includes a memory that stores data, a driver that transmits the data received from the memory, and at least one transmitter that transmits the data received from the driver to a receiver provided in an external main unit. The driver and the at least one transmitter are provided in a single IC (integrated circuit) chip and are not overlapped with each other in a planar view.
    Type: Grant
    Filed: August 12, 2013
    Date of Patent: April 5, 2016
    Assignee: Renesas Electronics Corporation
    Inventors: Yasutaka Nakashiba, Hiroaki Ohkubo, Mitsuji Okada, Shigeharu Nakata, Shuuichi Kagawa
  • Publication number: 20130327838
    Abstract: A memory card includes a memory that stores data, a driver that transmits the data received from the memory, and at least one transmitter that transmits the data received from the driver to a receiver provided in an external main unit. The driver and the at least one transmitter are provided in a single IC (integrated circuit) chip and are not overlapped with each other in a planar view.
    Type: Application
    Filed: August 12, 2013
    Publication date: December 12, 2013
    Applicant: Renesas Electronics Corporation
    Inventors: Yasutaka Nakashiba, Hiroaki Ohkubo, Mitsuji Okada, Shigeharu Nakata, Shuuichi Kagawa
  • Patent number: 8534563
    Abstract: An exemplary aspect of the present invention is a memory card that includes: a memory that stores data; a driver that modulates the data stored in the memory; a transmitter that transmits the data modulated by the driver to a receiver provided in an external main unit; and an IC chip having the driver and the transmitter formed therein.
    Type: Grant
    Filed: October 14, 2010
    Date of Patent: September 17, 2013
    Assignee: Renesas Electronics Corporation
    Inventors: Yasutaka Nakashiba, Hiroaki Ohkubo, Mitsuji Okada, Shigeharu Nakata, Shuuichi Kagawa
  • Patent number: 8294513
    Abstract: A demodulator according to the present invention is the demodulator that demodulates a plurality of received symbols having different amplitude of carrier wave. The demodulator includes an amplitude value calculation unit that calculates a received symbol amplitude value by adding an absolute value of in-phase component and an absolute value of quadrature component determined from the amplitude of the carrier wave in the received symbol. Further, the demodulator includes a demodulation unit that detects a change of the received symbol amplitude value calculated by the amplitude value calculation unit, and demodulates the received symbol based on the detection result.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: October 23, 2012
    Assignee: Renesas Electronics Corporation
    Inventors: Mitsuji Okada, Hiromi Saitou
  • Publication number: 20110089247
    Abstract: An exemplary aspect of the present invention is a memory card that includes: a memory that stores data; a driver that modulates the data stored in the memory; a transmitter that transmits the data modulated by the driver to a receiver provided in an external main unit; and an IC chip having the driver and the transmitter formed therein.
    Type: Application
    Filed: October 14, 2010
    Publication date: April 21, 2011
    Applicant: RENESAS ELECTRONICS CORPORATION
    Inventors: Yasutaka Nakashiba, Hiroaki Ohkubo, Mitsuji Okada, Shigeharu Nakata, Shuuichi Kagawa
  • Publication number: 20110074501
    Abstract: A demodulator according to the present invention is the demodulator that demodulates a plurality of received symbols having different amplitude of carrier wave. The demodulator includes an amplitude value calculation unit that calculates a received symbol amplitude value by adding an absolute value of in-phase component and an absolute value of quadrature component determined from the amplitude of the carrier wave in the received symbol. Further, the demodulator includes a demodulation unit that detects a change of the received symbol amplitude value calculated by the amplitude value calculation unit, and demodulates the received symbol based on the detection result.
    Type: Application
    Filed: September 28, 2010
    Publication date: March 31, 2011
    Applicant: Renesas Electronics Corporation
    Inventors: Mitsuji OKADA, Hiromi Saitou
  • Publication number: 20100215135
    Abstract: A receiving apparatus 100 in accordance with an exemplary aspect of the present invention is including a receiving unit 1 that receives an analog signal, a sample signal generation unit 2 that converts an analog signal received by the receiving unit 1 into a digital signal, and generates a sample signal by performing oversampling, a correlation unit 51 that obtains correlation between the sample signal and a known signal pattern, a symbol section estimation unit 53 that estimates timing of a symbol section based on the correlation value, and a sampling position determination unit 54 that determines a sampling position based on timing of a symbol section estimated by the symbol section estimation unit 53.
    Type: Application
    Filed: February 19, 2010
    Publication date: August 26, 2010
    Inventor: Mitsuji OKADA
  • Publication number: 20090161735
    Abstract: The communication device according to the present invention is a direct sequence spread spectrum device that performs a communication by using multiple different spread codes for multiple symbols. The direct sequence spread spectrum device according to the present invention includes: a correlation unit that calculates a correlation between each of the multiple different spread codes and a received signal spread by each of the multiple different spread codes, and that outputs a correlation degree for each of the spread codes; and a determination unit that demodulates the received signal to a symbol based on a value of the correlation degree for each of the spread codes.
    Type: Application
    Filed: December 18, 2008
    Publication date: June 25, 2009
    Applicant: NEC Electronics Corporation
    Inventor: Mitsuji Okada
  • Patent number: 6421352
    Abstract: In a data processing apparatus, a receiver receives pause control data signals from other data processing apparatuses. Each of the pause control data signals includes identification data of one of the other data processing apparatuses and a transmission interrupting time period. The identification data associated with the transmission interrupting time period is stored in a memory. Also, when a time corresponding to the transmission interrupting time period has passed, the identification data is removed from the memory. Transmission of data to one of the other data processing apparatuses having the identification data stored in the memory is interrupted.
    Type: Grant
    Filed: June 5, 1998
    Date of Patent: July 16, 2002
    Assignee: NEC Corporation
    Inventors: Susumu Manaka, Mitsuji Okada
  • Patent number: 5191654
    Abstract: A microprocessor is provided with one input/output port per bit including a decoder 6 for determining whether or not a bit assigned to the input/output port is selected for a procesing operation in an output mode, and a processing circuit 12 for processing an operation that has been designated. The processing circuit 12 comprises at least one processing element for processing supplied 1-bit data for the processing and/or output latch data held inside the processing circuit itself. The processing element is selected by separately inputted processing information for outputting processed data. A masking circuit outputs the processed data from an output terminal only when an output signal from the decoder 6 indicates that the bit assigned to the input/output port is selected.
    Type: Grant
    Filed: January 16, 1992
    Date of Patent: March 2, 1993
    Assignee: NEC Corporation
    Inventor: Mitsuji Okada