Patents by Inventor Hisao Koga

Hisao Koga 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: 20190158129
    Abstract: An encoder and decoder using LDPC-CC which avoid lowering the transmission efficiency of information while not deteriorating error correction performance, even at termination; and an encoding method of the same. A termination sequence length determining unit determines the sequence length of a termination sequence transmitted added to the end of an information sequence, according to the information length (information size) and encoding rate of the information sequence. A parity calculation unit carries out LDPC-CC coding on the information sequence and the known-information sequence necessary for generating a termination sequence of the determined termination sequence length, and calculates a parity sequence.
    Type: Application
    Filed: January 17, 2019
    Publication date: May 23, 2019
    Inventors: Yutaka Murakami, Hisao Koga, Nobutaka Kodama
  • Patent number: 10236918
    Abstract: An encoder and decoder using LDPC-CC which avoid lowering the transmission efficiency of information while not deteriorating error correction performance, even at termination; and an encoding method of the same. A termination sequence length determining unit determines the sequence length of a termination sequence transmitted added to the end of an information sequence, according to the information length (information size) and encoding rate of the information sequence. A parity calculation unit carries out LDPC-CC coding on the information sequence and the known-information sequence necessary for generating a termination sequence of the determined termination sequence length, and calculates a parity sequence.
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: March 19, 2019
    Assignee: Panasonic Corporation
    Inventors: Yutaka Murakami, Hisao Koga, Nobutaka Kodama
  • Patent number: 9705721
    Abstract: A communication apparatus performs a communication using a communication frame corresponding to a predetermined frequency bandwidth including a first frequency bandwidth and a second frequency bandwidth. The communication frame includes a first communication channel that corresponds to the first frequency bandwidth and that has a plurality of subcarriers and a second communication channel that corresponds to the second frequency bandwidth and that has a plurality of subcarriers. The communication apparatus sets a first phase vector with respect to the first communication channel, sets a second phase vector with respect to the second communication channel, generates communication data by adjusting a phase of symbol data using the first phase vector and the second phase vector, and transmits the communication data using the communication frame.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: July 11, 2017
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Hisao Koga, Shigekiyo Nosaka, Koji Ikeda
  • Publication number: 20170149524
    Abstract: An encoder and decoder using LDPC-CC which avoid lowering the transmission efficiency of information while not deteriorating error correction performance, even at termination; and an encoding method of the same. A termination sequence length determining unit determines the sequence length of a termination sequence transmitted added to the end of an information sequence, according to the information length (information size) and encoding rate of the information sequence. A parity calculation unit carries out LDPC-CC coding on the information sequence and the known-information sequence necessary for generating a termination sequence of the determined termination sequence length, and calculates a parity sequence.
    Type: Application
    Filed: February 2, 2017
    Publication date: May 25, 2017
    Inventors: Yutaka Murakami, Hisao Koga, Nobutaka Kodama
  • Patent number: 9602142
    Abstract: An encoder and decoder using LDPC-CC which avoid lowering the transmission efficiency of information while not deteriorating error correction performance, even at termination; and an encoding method of the same. A termination sequence length determining unit determines the sequence length of a termination sequence transmitted added to the end of an information sequence, according to the information length (information size) and encoding rate of the information sequence. A parity calculation unit carries out LDPC-CC coding on the information sequence and the known-information sequence necessary for generating a termination sequence of the determined termination sequence length, and calculates a parity sequence.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: March 21, 2017
    Assignee: Panasonic Corporation
    Inventors: Yutaka Murakami, Hisao Koga, Nobutaka Kodama
  • Patent number: 9419756
    Abstract: A communication apparatus repeatedly outputs a first multi-carrier signal SS during predetermined periods T1, T2, T3, . . . , and outputs a second multi-carrier signal RS whose phase vector is different from that of the first multi-carrier signal SS, at a predetermined timing based on the first multi-carrier signal SS. The communication apparatus further detects the second multi-carrier signal RS output from another communication apparatus, which uses a different communication method from the communication apparatus. Accordingly, both communication apparatuses can differentiate the first multi-carrier signal SS from the second multi-carrier signal RS without performing relatively cumbersome modulation and other processes.
    Type: Grant
    Filed: September 23, 2014
    Date of Patent: August 16, 2016
    Assignee: Panasonic Corporation
    Inventors: Hisao Koga, Nobutaka Kodama
  • Publication number: 20160149740
    Abstract: A communication apparatus performs a communication using a communication frame corresponding to a predetermined frequency bandwidth including a first frequency bandwidth and a second frequency bandwidth. The communication frame includes a first communication channel that corresponds to the first frequency bandwidth and that has a plurality of subcarriers and a second communication channel that corresponds to the second frequency bandwidth and that has a plurality of subcarriers. The communication apparatus sets a first phase vector with respect to the first communication channel, sets a second phase vector with respect to the second communication channel, generates communication data by adjusting a phase of symbol data using the first phase vector and the second phase vector, and transmits the communication data using the communication frame.
    Type: Application
    Filed: November 23, 2015
    Publication date: May 26, 2016
    Inventors: Hisao Koga, Shigekiyo Nosaka, Koji Ikeda
  • Publication number: 20160149689
    Abstract: A communication apparatus that performs a communication with another communication apparatus using a frequency bandwidth including a plurality of communication channels and includes a processor and a communicating device. The communicating device transmits a signal to the another communication apparatus using a first number of communication channels included in the frequency bandwidth, and receives a response to the signal from the another communication apparatus using the first number of communication channels. The processor changes the number of communication channels used in the communication with the another communication apparatus, from the first number to a second number, in accordance with the response to the signal, and controls power for each of the communication channels used in the communication with the another communication apparatus based on the second number.
    Type: Application
    Filed: November 23, 2015
    Publication date: May 26, 2016
    Inventors: Hisao Koga, Shigekiyo Nosaka, Koji Ikeda
  • Patent number: 9325376
    Abstract: Disclosed is a direct current power line communication apparatus, by which communication between electronic apparatuses with a direct current voltage line there between can be stabilized. The direct current power line communication apparatus, i.e., a direct current power line communication apparatus that transmits signals using the direct current voltage line (15a), is provided with: a PLC communication control unit (29), which controls the transmitting unit (27) connected to the direct current voltage line (15a); and a voltage detecting unit (30), which detects the voltage of the direct current voltage line (15a), and notifies the PLC communication control unit (29) of the detected voltage. The PLC communication control unit (29) transmits information, including the voltage information, to other direct current power line communication apparatus via the transmitting unit (27).
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: April 26, 2016
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Shigekiyo Nosaka, Hisao Koga, Ryota Yukizane
  • Publication number: 20150236719
    Abstract: An encoder and decoder using LDPC-CC which avoid lowering the transmission efficiency of information while not deteriorating error correction performance, even at termination; and an encoding method of the same. A termination sequence length determining unit determines the sequence length of a termination sequence transmitted added to the end of an information sequence, according to the information length (information size) and encoding rate of the information sequence. A parity calculation unit carries out LDPC-CC coding on the information sequence and the known-information sequence necessary for generating a termination sequence of the determined termination sequence length, and calculates a parity sequence.
    Type: Application
    Filed: April 28, 2015
    Publication date: August 20, 2015
    Inventors: Yutaka MURAKAMI, Hisao KOGA, Nobutaka KODAMA
  • Patent number: 9045048
    Abstract: A charging control apparatus (1) that controls charging of a plurality of vehicles connected via a power line is provided with an electrical storage section (41) that stores power supplied from a power source, a communication section that receives information relating to supply power from the plurality of vehicles, a power amount calculation section (43) that calculates a supply power amount for the plurality of vehicles based on the information, and a control section that, if the supply power amount exceeds a second threshold value combining a remaining charge amount of the electrical storage section (41) and a contractual power amount, controls supply power for the plurality of vehicles so as to become smaller than the second threshold value.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: June 2, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Ryota Yukizane, Hisao Koga
  • Patent number: 9048869
    Abstract: An encoder and decoder using LDPC-CC which avoid lowering the transmission efficiency of information while not deteriorating error correction performance, even at termination; and an encoding method of the same. A termination sequence length determining unit determines the sequence length of a termination sequence transmitted added to the end of an information sequence, according to the information length (information size) and encoding rate of the information sequence. A parity calculation unit carries out LDPC-CC coding on the information sequence and the known-information sequence necessary for generating a termination sequence of the determined termination sequence length, and calculates a parity sequence.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: June 2, 2015
    Assignee: Panasonic Corporation
    Inventors: Yutaka Murakami, Hisao Koga, Nobutaka Kodama
  • Publication number: 20150139247
    Abstract: In communication method for communicating via a transmission channel to which first communication apparatuses communicating based on a first communication system, second communication apparatuses communicating based on a second communication system, and third communication apparatuses communicating based on a third communication system are connected, a data transmission domain and a notification domain for notifying a data transmission within the data transmission domain are allocated to the first communication apparatuses, the second communication apparatuses, and the third communication apparatuses, respectively. In the communication method, notices of the data transmission for each of the first communication apparatuses, the second communication apparatuses and the third communication apparatuses are transmitted within the notification domain, and the data transmission domain is reallocated in accordance with the notices transmitted from the first, second and third communication apparatuses.
    Type: Application
    Filed: January 29, 2015
    Publication date: May 21, 2015
    Inventors: Stefano GALLI, Akio KUROBE, Hisao KOGA, Nobutaka KODAMA
  • Patent number: 8971422
    Abstract: In communication method for communicating via a transmission channel to which first communication apparatuses communicating based on a first communication system, second communication apparatuses communicating based on a second communication system, and third communication apparatuses communicating based on a third communication system are connected, a data transmission domain and a notification domain for notifying a data transmission within the data transmission domain are allocated to the first communication apparatuses, the second communication apparatuses, and the third communication apparatuses, respectively. In the communication method, notices of the data transmission for each of the first communication apparatuses, the second communication apparatuses and the third communication apparatuses are transmitted within the notification domain, and the data transmission domain is reallocated in accordance with the notices transmitted from the first, second and third communication apparatuses.
    Type: Grant
    Filed: March 18, 2014
    Date of Patent: March 3, 2015
    Assignee: Panasonic Corporation
    Inventors: Stefano Galli, Akio Kurobe, Hisao Koga, Nobutaka Kodama
  • Publication number: 20150043664
    Abstract: A communication apparatus repeatedly outputs a first multi-carrier signal SS during predetermined periods T1, T2, T3, . . . , and outputs a second multi-carrier signal RS whose phase vector is different from that of the first multi-carrier signal SS, at a predetermined timing based on the first multi-carrier signal SS. The communication apparatus further detects the second multi-carrier signal RS output from another communication apparatus, which uses a different communication method from the communication apparatus. Accordingly, both communication apparatuses can differentiate the first multi-carrier signal SS from the second multi-carrier signal RS without performing relatively cumbersome modulation and other processes.
    Type: Application
    Filed: September 23, 2014
    Publication date: February 12, 2015
    Inventors: Hisao KOGA, Nobutaka Kodama
  • Patent number: 8923415
    Abstract: A transmitted digital signal from a digital signal processor is converted into an analog signal at an analog circuit, and then transmitted from transmission lines via a communication transformer. A communication apparatus has a plurality of communication modes that perform communication in different communication ranges. A controller in the digital signal processor changes an output level of the transmitted signal according to the communication modes. More specifically, the controller detects communication quality of the transmitted signal and lowers the output level of the transmitted signal within a range where the detected communication quality does not fall below predetermined quality.
    Type: Grant
    Filed: September 11, 2006
    Date of Patent: December 30, 2014
    Assignee: Panasonic Corporation
    Inventors: Hisao Koga, Nobutaka Kodama
  • Patent number: 8913629
    Abstract: Within a domain of a master device, devices that share a power line as a communications medium monitor signal detection windows to sense network status. The devices transmit sensed network status to the master device. The master device allocates channel resources based on the network statuses communicated by the devices within the domain.
    Type: Grant
    Filed: September 20, 2012
    Date of Patent: December 16, 2014
    Assignees: Qualcomm Atheros, Inc., HisiliconTechnologies Ltd., Panasonic Corporation, Spidcom Technologies, STMicroelectronics, Inc., Gigle Networks Iberia, S.L.
    Inventors: Lawrence W. Yonge, III, Srinivas Katar, William E. Earnshaw, Stefano Galli, Akio Kurobe, Hisao Koga, Nobutaka Kodama, Jose Abad Molina, Oleg Logvinov, Paul Dixon, Olivier Isson
  • Patent number: 8879700
    Abstract: A communication apparatus repeatedly outputs a first multi-carrier signal SS during predetermined periods T1, T2, T3, . . . , and outputs a second multi-carrier signal RS whose phase vector is different from that of the first multi-carrier signal SS, at a predetermined timing based on the first multi-carrier signal SS. The communication apparatus further detects the second multi-carrier signal RS output from another communication apparatus, which uses a different communication method from the communication apparatus. Accordingly, both communication apparatuses can differentiate the first multi-carrier signal SS from the second multi-carrier signal RS without performing relatively cumbersome modulation and other processes.
    Type: Grant
    Filed: June 18, 2013
    Date of Patent: November 4, 2014
    Assignee: Panasonic Corporation
    Inventors: Hisao Koga, Nobutaka Kodama
  • Publication number: 20140310567
    Abstract: An encoder and decoder using LDPC-CC which avoid lowering the transmission efficiency of information while not deteriorating error correction performance, even at termination; and an encoding method of the same. A termination sequence length determining unit determines the sequence length of a termination sequence transmitted added to the end of an information sequence, according to the information length (information size) and encoding rate of the information sequence. A parity calculation unit carries out LDPC-CC coding on the information sequence and the known-information sequence necessary for generating a termination sequence of the determined termination sequence length, and calculates a parity sequence.
    Type: Application
    Filed: June 26, 2014
    Publication date: October 16, 2014
    Inventors: Yutaka MURAKAMI, Hisao KOGA, Nobutaka KODAMA
  • Patent number: 8819528
    Abstract: An encoder and decoder using LDPC-CC are provided, which avoid lowering the transmission efficiency of information while not deteriorating error correction performance, even at termination; and an associated encoding method is provided. A termination sequence length determining unit determines the sequence length of a transmitted termination sequence added to the end of an information sequence, according to the information length (information size) and encoding rate of the information sequence. A parity calculation unit carries out LDPC-CC coding on the information sequence and the known-information sequence necessary for generating a termination sequence of the determined termination sequence length, and calculates a parity sequence.
    Type: Grant
    Filed: February 19, 2010
    Date of Patent: August 26, 2014
    Assignee: Panasonic Corporation
    Inventors: Yutaka Murakami, Hisao Koga, Nobutaka Kodama